config.yaml 

If not specified via the command line, the main configuration file config.yaml for OctoPrint is expected in its settings folder, which unless defined differently via the command line is located at ~/.octoprint on Linux, at %APPDATA%/OctoPrint on Windows and at ~/Library/Application Support/OctoPrint on macOS. If the file is not there, you can just create it - it will only get created by OctoPrint once you save settings that deviate from the default settings.

Note that many of these settings are available from the “Settings” menu in OctoPrint itself. They can also be configured via config command line interface.

Access Control 

Use the following settings to enable access control:

accessControl:
  # The user manager implementation to use for accessing user information. Currently only a filebased
  # user manager is implemented which stores configured accounts in a YAML file (Default: users.yaml
  # in the default configuration folder, see below)
  userManager: octoprint.access.users.FilebasedUserManager

  # The YAML user file to use. If left out defaults to users.yaml in the default configuration folder.
  userfile: /path/to/users.yaml

  # If set to true, will automatically log on clients originating from any of the networks defined in
  # "localNetworks" as the user defined in "autologinAs". Defaults to false.
  autologinLocal: false

  # The name of the user to automatically log on clients originating from "localNetworks" as. Must
  # be the name of one of your configured users.
  autologinAs: someUser

  # A list of networks or IPs for which an automatic logon as the user defined in "autologinAs" will
  # take place. If available OctoPrint will evaluate the "X-Forwarded-For" HTTP header for determining
  # the client's IP address (see https://code.google.com/p/haproxy-docs/wiki/forwardfor on how to
  # configure the sending of this header in HAProxy). Defaults to 127.0.0.0/8 (so basically anything
  # originating from localhost).
  localNetworks:
  - 127.0.0.0/8
  - 192.168.1.0/24

  # Whether to trust Basic Authentication headers. If you have setup Basic Authentication in front of
  # OctoPrint and the user names you use there match OctoPrint accounts, by setting this to true users will
  # be logged into OctoPrint as the user during Basic Authentication. Your should ONLY ENABLE THIS if your
  # OctoPrint instance is only accessible through a connection locked down through Basic Authentication!
  trustBasicAuthentication: false

  # Whether to also check the password provided through Basic Authentication if the Basic Authentication
  # header is to be trusted. Disabling this will only match the user name in the Basic Authentication
  # header and login the user without further checks. Use with caution.
  checkBasicAuthenticationPassword: true

  # Whether to trust remote user headers. If you have setup authentication in front of
  # OctoPrint and the user names you use there match OctoPrint accounts, by setting this to true users will
  # be logged into OctoPrint as the user provided in the header. Your should ONLY ENABLE THIS if your
  # OctoPrint instance is only accessible through a connection locked down through an authenticating reverse proxy!
  trustRemoteUser: false

  # Header used by the reverse proxy to convey the authenticated user.
  remoteUserHeader: REMOTE_USER

  # If a remote user is not found, add them. Use this only if all users from the remote system can use OctoPrint.
  addRemoteUsers: false

  # Default timeout after which to require reauthentication by a user for dangerous changes, in minutes.
  # Defaults to 5 minutes. Set to 0 to disable reauthentication requirements (SECURITY IMPACT!).
  defaultReauthenticationTimeout: 5

API 

Settings for the REST API:

api:
  # Whether to enable the API
  enabled: True

  # Current API key needed for accessing the API
  key: ...

  # Whether to allow cross origin access to the API or not
  allowCrossOrigin: false

  # Additional app api keys, see REST API > Apps in the docs.
  # Deprecated since 1.3.11, to be removed in 1.4.0!
  apps:
    "some.app.identifier:some_version":
      pubkey: <RSA pubkey>
      enabled: true

Appearance 

Use the following settings to tweak OctoPrint’s appearance a bit to better distinguish multiple instances/printers appearance or to modify the order and presence of the various UI components:

appearance:
  # Use this to give your printer a name. It will be displayed in the title bar
  # (as "<Name> [OctoPrint]") and in the navigation bar (as "OctoPrint: <Name>")
  name: My Printer

  # Use this to color the navigation bar. Supported colors are red, orange,
  # yellow, green, blue, violet and default.
  color: default

  # Makes the color of the navigation bar "transparent". In case your printer uses
  # acrylic for its frame ;)
  colorTransparent: false

  # Show the internal filename in the files sidebar, if necessary
  # UI change only
  showInternalFilename: true

  # Configures the order and availability of the UI components
  components:

    # Defines the order of the components within their respective containers.
    #
    # If overridden by the user the resulting order for display will be calculated as
    # follows:
    #
    # - first all components as defined by the user
    # - then all enabled core components as define in the default order (see below)
    #
    # Components not contained within the default order (e.g. from plugins) will be either
    # prepended or appended to that result, depending on component type.
    #
    # Note that a component is not included in the order as defined by the user will still
    # be put into the container, according to the default order. To fully disable a
    # component, you'll need to add it to the container's disabled list further below.
    order:

      # order of navbar items
      navbar:
      - settings
      - systemmenu
      - plugin_announcements
      - plugin_logging
      - plugin_pi_support
      - login

      # order of sidebar items
      sidebar:
      - plugin_firmware_check
      - connection
      - state
      - files

      # order of tab items
      tab:
      - temperature
      - control
      - plugin_gcodeviewer
      - terminal
      - timelapse

      # order of settings, if settings plugins are registered gets extended internally by
      # section_plugins and all settings plugins
      settings:
      - section_printer
      - serial
      - printerprofiles
      - temperatures
      - terminalfilters
      - gcodescripts
      - section_features
      - features
      - webcam
      - accesscontrol
      - plugin_gcodeviewer
      - api
      - plugin_appkeys
      - section_octoprint
      - folders
      - appearance
      - plugin_logging
      - plugin_pluginmanager
      - plugin_softwareupdate
      - plugin_announcements
      - plugin_backup
      - plugin_tracking
      - plugin_errortracking

      # order of user settings
      usersettings:
      - access
      - interface

      # order of wizards
      wizard:
      - plugin_backup
      - plugin_corewizard_acl

      # order of about dialog entries
      about:
      - about
      - plugin_pi_support
      - supporters
      - authors
      - license
      - thirdparty
      - plugin_pluginmanager

      # order of generic templates
      generic: []

    # Disabled components per container. If a component is included here it will not
    # be included in OctoPrint's UI at all. Note that this might mean that critical
    # functionality will not be available if no replacement is registered.
    disabled:
      navbar: []
      sidebar: []
      tab: []
      settings: []
      usersettings: []
      generic: []

  # Default language of OctoPrint. If left unset OctoPrint will try to match up available
  # languages with the user's browser settings.
  defaultLanguage: null

Note

By modifying the components > order lists you may reorder OctoPrint’s UI components as you like. You can also inject Plugins at another than their default location in their respective container by adding the entry plugin_<plugin identifier> where you want them to appear.

Example: If you want the tab of the Hello World Plugin to appear as the first tab in OctoPrint, you’d need to redefine components > order > tab by including something like this in your config.yaml:

appearance:
  components:
    order:
      tab:
      - plugin_helloworld

OctoPrint will then display the tabs in the order plugin_helloworld, temperature, control, plugin_gcodeviewer, terminal, timelapse plus any other plugins.

Controls 

Use the controls section to add custom controls to the “Controls” tab within OctoPrint.

controls:
  - name: Fan
    layout: horizontal
    children:
      - name: Enable Fan
        type: parametric_command
        command: M106 S%(speed)s
        input:
          - name: Speed (0-255)
            parameter: speed
            default: 255
      - name: Disable Fan
        type: command
        command: M107

Development settings 

The following settings are only relevant to you if you want to do OctoPrint development:

# Settings only relevant for development
devel:
  # Settings for OctoPrint's internal caching
  cache:
    # Whether to enable caching. Defaults to true. Setting it to false will cause the UI to always
    # be fully rerendered on request to / on the server.
    enabled: true

    # Whether to enable the preemptive cache
    preemptive: true

  # Settings for stylesheet preference. OctoPrint will prefer to use the stylesheet type
  # specified here. Usually (on a production install) that will be the compiled css (default).
  # Developers may specify less here too.
  stylesheet: css

  # Settings for OctoPrint's web asset merging and minifying
  webassets:
    # If set to true, OctoPrint will merge all JS, all CSS and all Less files into one file per type
    # to reduce request count. Setting it to false will load all assets individually. Note: if this is set to
    # false, no minification will take place regardless of the minify setting below.
    bundle: true

    # If set to true, OctoPrint will the core and library javascript assets. Note: if bundle is
    # set to false, no minification will take place either.
    minify: true

    # If set to true, OctoPrint will also minify the third party plugin javascript assets. Note: if bundle or
    # minify are set to false, no minification of the plugin assets will take place either.
    minify_plugins: false

    # Whether to delete generated web assets on server startup (forcing a regeneration)
    clean_on_startup: true

  # enable or disable the loading animation
  showLoadingAnimation: true

Estimation 

The following settings provide parameters for estimators within OctoPrint. Currently only the estimation of the left print time during an active job utilizes this section.

estimation:
  # Parameters for the print time estimation during an ongoing print job
  printTime:
    # Until which percentage to do a weighted mixture of statistical duration (analysis or
    # past prints) with the result from the calculated estimate if that's already available.
    # Utilized to compensate for the fact that the earlier in a print job, the least accuracy
    # even a stable calculated estimate provides.
    statsWeighingUntil: 0.5

    # Range the assumed percentage (based on current estimated statistical, calculated or mixed
    # total vs elapsed print time so far) needs to be around the actual percentage for the
    # result to be used
    validityRange: 0.15

    # If no estimate could be calculated until this percentage and no statistical data is available,
    # use dumb linear estimate
    forceDumbFromPercent: 0.3

    # If no estimate could be calculated until this many minutes into the print and no statistical
    # data is available, use dumb linear estimate
    forceDumbAfterMin: 30

    # Average fluctuation between individual calculated estimates to consider in stable range. Seconds
    # of difference.
    stableThreshold: 60

Events 

Use the following settings to add shell/gcode commands to be executed on certain events:

events:
  subscriptions:
    # example event consumer that prints a message to the system log if the printer is disconnected
    - event: Disconnected
      command: "logger 'Printer got disconnected'"
      type: system

    # example event consumer that queries printer information from the firmware, prints a "Connected"
    # message to the LCD and homes the print head upon established printer connection, disabled though
    - event: Connected
      command: M115,M117 printer connected!,G28
      type: gcode
      enabled: False

Note

For debugging purposes, you can also add an additional property debug to your event subscription definitions that if set to true will make the event handler print a log line with your subscription’s command after performing all placeholder replacements. Example:

events:
  subscriptions:
  - event: Startup
    command: "logger 'OctoPrint started up'"
    type: system
    debug: true

This will be logged in OctoPrint’s logfile as

Executing System Command: logger 'OctoPrint started up'

Feature 

Use the following settings to enable or disable OctoPrint features:

feature:

  # Whether to enable the gcode viewer in the UI or not
  gCodeVisualizer: true

  # Whether to enable the temperature graph in the UI or not
  temperatureGraph: true

  # Specifies whether support for SD printing and file management should be enabled
  sdSupport: true

  # Whether to enable the keyboard control feature in the control tab
  keyboardControl: true

  # Whether to actively poll the watched folder (true) or to rely on the OS's file system
  # notifications instead (false)
  pollWatched: false

  # Whether to enable model size detection and warning (true) or not (false)
  modelSizeDetection: true

  # Whether to show a confirmation on print cancelling (true) or not (false)
  printCancelConfirmation: true

  # Commands that should never be auto-uppercased when sent to the printer through the Terminal tab.
  # Defaults to only M117.
  autoUppercaseBlacklist:
  - M117
  - M118

  # whether G90/G91 also influence absolute/relative mode of extruders
  g90InfluencesExtruder: false

  # Replace all special characters and spaces with text equivalent to make them universally compatible.
  # Most OS filesystems work fine with unicode characters, but just in case you can revert to the
  # older behaviour by setting this to true.
  enforceReallyUniversalFilenames: false

Folder 

Use the following settings to set custom paths for folders used by OctoPrint:

folder:
  # Absolute path where to store gcode uploads. Defaults to the uploads folder in the OctoPrint settings folder
  uploads: /path/to/upload/folder

  # Absolute path where to store finished timelapse recordings. Defaults to the timelapse folder in the OctoPrint
  # settings dir
  timelapse: /path/to/timelapse/folder

  # Absolute path where to store temporary timelapse files. Defaults to the timelapse/tmp folder in the OctoPrint
  # settings dir
  timelapse_tmp: /path/to/timelapse/tmp/folder

  # Absolute path where to store log files. Defaults to the logs folder in the OctoPrint settings dir
  logs: /path/to/logs/folder

  # Absolute path to the virtual printer's simulated SD card. Only useful for development, just ignore
  # it otherwise
  virtualSd: /path/to/virtualSd/folder

  # Absolute path to a folder being watched for new files which then get automatically
  # added to OctoPrint (and deleted from that folder). Can e.g. be used to define a folder which
  # can then be mounted from remote machines and used as local folder for quickly adding downloaded
  # and/or sliced objects to print in the future.
  watched: /path/to/watched/folder

  # Absolute path to a folder where manually installed plugins may reside
  plugins: /path/to/plugins/folder

  # Absolute path where to store slicing profiles
  slicingProfiles: /path/to/slicingProfiles/folder

  # Absolute path where to store printer profiles
  printerProfiles: /path/to/printerProfiles/folder

  # Absolute path where to store (GCODE) scripts
  scripts: /path/to/scripts/folder

GCODE Analysis 

Settings pertaining to the server side GCODE analysis implementation.

gcodeAnalysis:
  # Maximum number of extruders to support/to sanity check for
  maxExtruders: 10

  # Pause between each processed GCODE line in normal priority mode, seconds
  throttle_normalprio: 0.01

  # Pause between each processed GCODE line in high priority mode (e.g. on fresh
  # uploads), seconds
  throttle_highprio: 0.0

GCODE Viewer 

Settings pertaining to the built in GCODE Viewer.

gcodeViewer:
  # Whether to enable the GCODE viewer in the UI
  enabled: true

  # Maximum size a GCODE file may have on mobile devices to automatically be loaded
  # into the viewer, defaults to 2MB
  mobileSizeThreshold: 2097152

  # Maximum size a GCODE file may have to automatically be loaded into the viewer,
  # defaults to 20MB
  sizeThreshold: 20971520

Plugin settings 

The plugins section is where plugins can store their specific settings. It is also where the installed but disabled plugins are tracked:

# Settings for plugins
plugins:

  # Identifiers of installed but disabled plugins
  _disabled:
  - ...

  # Identifiers of plugins for which python compatibility information will be ignored and
  # the plugin considered compatible in any case. Only for development, do NOT use in production.
  _forcedCompatible:
  - ...

  # Custom sorting of hooks and implementations provided by plugins. Two-tiered dictionary
  # structure, plugin identifier mapping to a dictionary of order overrides mapped by
  # sorting context/hook name
  _sortingOrder:
    some_plugin:
      some_hook: 1
      some_other_hook: 200

  # The rest are individual plugin settings, each tracked by their identifier, e.g.:
  some_plugin:
    some_setting: true
    some_other_setting: false

Printer Profiles 

Defaults settings for printer profiles.

# Settings for printer profiles
printerProfiles:

  # Name of the printer profile to default to
  default: _default

  # Default printer profile
  defaultProfile:
    ...

Scripts 

Default scripts and snippets. You’d usually not edit the config.yaml file to adjust those but instead create the corresponding files in ~/.octoprint/scripts/. See GCODE Script.

# Configured scripts
scripts:

  # GCODE scripts and snippets
  gcode:

    # Script called after OctoPrint connected to the printer.
    afterPrinterConnected:

    # Script called before a print was started.
    beforePrintStarted:

    # Script called after a print was cancelled.
    afterPrintCancelled: "; disable motors\nM84\n\n;disable all heaters\n{% snippet 'disable_hotends' %}\nM140 S0\n\n;disable fan\nM106 S0"

    # Script called after a print was successfully completed.
    afterPrintDone:

    # Script called after a print was paused.
    afterPrintPaused:

    # Script called before a print was resumed.
    beforePrintResumed:

    # Snippets that may be used in scripts
    snippets:
      disable_hotends: "{% for tool in range(printer_profile.extruder.count) %}M104 T{{ tool }} S0\n{% endfor %}"

Serial 

Use the following settings to configure the serial connection to the printer:

serial:
  # Use the following option to define the default serial port, defaults to unset (= AUTO)
  port: /dev/ttyACM0

  # Use the following option to define the default baudrate, defaults to unset (= AUTO)
  baudrate: 115200

  # Whether to automatically connect to the printer on server startup (if available)
  autoconnect: false

  # Whether to log whole communication to serial.log (warning: might decrease performance)
  log: false

  # Timeouts used for the serial connection to the printer, you might want to adjust these if you are
  # experiencing connection problems
  timeout:

    # Timeout for waiting for a response from the currently tested port during autodetect, in seconds.
    # Defaults to 0.5 sec
    detection: 0.5

    # Timeout for waiting to establish a connection with the selected port, in seconds.
    # Defaults to 2 sec
    connection: 2

    # Timeout during serial communication, in seconds.
    # Defaults to 30 sec
    communication: 30

    # Timeout during serial communication when busy protocol support is detected, in seconds.
    # Defaults to 3 sec
    communicationBusy: 3

    # Timeout after which to query temperature when no target is set
    temperature: 5

    # Timeout after which to query temperature when a target is set
    temperatureTargetSet: 2

    # Timeout after which to query the SD status while SD printing
    sdStatus: 1

  # Maximum number of consecutive communication timeouts after which the printer will be considered
  # dead and OctoPrint disconnects with an error.
  maxCommunicationTimeouts:

    # max. timeouts when the printer is idle
    idle: 2

    # max. timeouts when the printer is printing
    printing: 5

    # max. timeouts when a long running command is active
    long: 5

  # Maximum number of write attempts to serial during which nothing can be written before the communication
  # with the printer is considered dead and OctoPrint will disconnect with an error
  maxWritePasses: 5

  # Use this to define additional patterns to consider for serial port listing. Must be a valid
  # "glob" pattern (see http://docs.python.org/3/library/glob.html). Defaults to not set.
  additionalPorts:
  - /dev/myPrinterSymlink

  # Use this to define additional baud rates to offer for connecting to serial ports. Must be a
  # valid integer. Defaults to not set
  additionalBaudrates:
  - 123456

  # Commands which should not be sent to the printer, e.g. because they are known to block serial
  # communication until physical interaction with the printer as is the case on most firmwares with
  # the default M0 and M1.
  blockedCommands:
  - M0
  - M1

  # Commands which should not be sent to the printer and just silently ignored.
  # An example of when you may wish to use this could be useful if you wish to manually change a filament on M600,
  # by using that as a Pausing command (below)
  ignoredCommands:

  # Commands which should cause OctoPrint to pause any ongoing prints.
  pausingCommands:
  - M0
  - M1
  - M25

  # Commands which are known to take a long time to be acknowledged by the firmware. E.g.
  # homing, dwelling, auto leveling etc. Defaults to the below commands.
  longRunningCommands:
  - G4
  - G28
  - G29
  - G30
  - G32
  - M400
  - M226
  - M600

  # Commands which need to always be send with a checksum. Defaults to only M110
  checksumRequiringCommands:
  - M110

  # Command to send in order to initiate a handshake with the printer.
  # Defaults to "M110 N0" which simply resets the line numbers in the firmware and which
  # should be acknowledged with a simple "ok".
  helloCommand:
  - M110 N0

  # Whether to disconnect on errors or not
  disconnectOnErrors: true

  # Whether to completely ignore errors from the firmware or not
  ignoreErrorsFromFirmware: false

  # Whether to log resends to octoprint.log or not. Invaluable debug tool without performance
  # impact, leave on if possible please
  logResends: true

  # Specifies whether OctoPrint should wait for the start response from the printer before trying to send commands
  # during connect.
  waitForStartOnConnect: false

  # Specifies whether OctoPrint should wait to load the SD card file list until the first firmware capability
  # report is processed.
  waitToLoadSdFileList: false

  # Specifies whether OctoPrint should send linenumber + checksum with every printer command. Needed for
  # successful communication with Repetier firmware
  alwaysSendChecksum: false

  # Specifies whether OctoPrint should also send linenumber + checksum with commands that are *not*
  # detected as valid GCODE (as in, they do not match the regular expression "^\s*([GM]\d+|T)").
  sendChecksumWithUnknownCommands: false

  # Specifies whether OctoPrint should also use up acknowledgments ("ok") for commands that are *not*
  # detected as valid GCODE (as in, they do not match the regular expression "^\s*([GM]\d+|T)").
  unknownCommandsNeedAck: false

  # Whether to ignore the first ok after a resend response. Needed for successful communication with
  # Repetier firmware
  swallowOkAfterResend: false

  # Specifies whether firmware expects relative paths for selecting SD files
  sdRelativePath: false

  # Whether to always assume that an SD card is present in the printer.
  # Needed by some firmwares which don't report the SD card status properly.
  sdAlwaysAvailable: false

  # Whether the printer sends repetier style target temperatures in the format
  #   TargetExtr0:<temperature>
  # instead of attaching that information to the regular M105 responses
  repetierTargetTemp: false

  # Whether to enable external heatup detection (to detect heatup triggered e.g. through the printer's LCD panel or
  # while printing from SD) or not. Causes issues with Repetier's "first ok then response" approach to
  # communication, so disable for printers running Repetier firmware.
  externalHeatupDetection: true

  # Whether to ignore identical resends from the printer (true, repetier) or not (false)
  ignoreIdenticalResends: false

  # If ignoredIdenticalResends is true, how many consecutive identical resends to ignore
  identicalResendsCount: 7

  # Whether to support F on its own as a valid GCODE command (true) or not (false)
  supportFAsCommand: false

  # Whether to attempt to auto detect the firmware of the printer and adjust settings
  # accordingly (true) or not and rely on manual configuration (false)
  firmwareDetection: true

  # Whether to block all sending to the printer while a G4 (dwell) command is active (true, repetier)
  # or not (false)
  blockWhileDwelling: false

  # Whether to support resends without follow-up ok or not
  supportResendsWithoutOk: false

  # encoding to use when talking to a machine
  # (ascii limits access to characters 0-127)
  # (latin_1 enables access to the "extended" ascii characters 0-255)
  # other values can be used:  https://docs.python.org/3/library/codecs.html#standard-encodings
  encoding: ascii

  # Whether to enable support for the shutdown action command, allowing the printer to
  # shut down OctoPrint and the system it's running on
  enableShutdownActionCommand: false

  # Whether to "manually" trigger an ok for M29 (a lot of versions of this command are buggy and
  # the response skips on the ok)
  triggerOkForM29: true

  # Percentage of resend requests among all sent lines that should be considered critical
  resendRatioThreshold: 10

  capabilities:

    # Whether to enable temperature autoreport in the firmware if its support is detected
    autoreport_temp: true

    # Whether to shorten the communication timeout if the firmware seems to support the busy protocol
    busy_protocol: true

Server 

Use the following settings to configure the server:

server:
  # Use this option to define the host to which to bind the server, defaults to "0.0.0.0" (= all
  # interfaces)
  host: 0.0.0.0

  # Use this option to define the port to which to bind the server, defaults to 5000
  port: 5000

  # If this option is true, OctoPrint will show the First Run wizard and set the setting to
  # false after that completes
  firstRun: false

  # If this option is true, OctoPrint will enable safe mode on the next server start and
  # reset the setting to false
  startOnceInSafeMode: false

  # Set this to true to make OctoPrint ignore incomplete startups. Helpful for development.
  ignoreIncompleteStartup: false

  # Secret key for encrypting cookies and such, randomly generated on first run
  secretKey: someSecretKey

  # Settings if OctoPrint is running behind a reverse proxy (haproxy, nginx, apache, ...).
  # These are necessary in order to make OctoPrint generate correct external URLs so
  # that AJAX requests and download URLs work, and so that client IPs are read correctly.
  reverseProxy:

    # The request header from which to determine the URL prefix under which OctoPrint
    # is served by the reverse proxy
    prefixHeader: X-Script-Name

    # The request header from which to determine the scheme (http or https) under which
    # a specific request to OctoPrint was made to the reverse proxy
    schemeHeader: X-Scheme

    # The request header from which to determine the host under which OctoPrint
    # is served by the reverse proxy
    hostHeader: X-Forwarded-Host

    # Use this option to define an optional URL prefix (with a leading /, so absolute to your
    # server's root) under which to run OctoPrint. This should only be needed if you want to run
    # OctoPrint behind a reverse proxy under a different root endpoint than `/` and can't configure
    # said reverse proxy to send a prefix HTTP header (X-Script-Name by default, see above) with
    # forwarded requests.
    prefixFallback:

    # Use this option to define an optional forced scheme (http or https) under which to run
    # OctoPrint. This should only be needed if you want to run OctoPrint behind a reverse
    # proxy that also does HTTPS determination but can't configure said reverse proxy to
    # send a scheme HTTP header (X-Scheme by default, see above) with forwarded requests.
    schemeFallback:

    # Use this option to define an optional forced host under which to run OctoPrint. This should
    # only be needed if you want to run OctoPrint behind a reverse proxy with a different hostname
    # than OctoPrint itself but can't configure said reverse proxy to send a host HTTP header
    # (X-Forwarded-Host by default, see above) with forwarded requests.
    hostFallback:

    # List of trusted proxy servers for which to ignore the IP address when trying to determine
    # the connecting client's IP address. A reverse proxy on the same machine as OctoPrint (e.g. as
    # found on OctoPi) will be handled correctly by the default setting of 127.0.0.1 and ::1, further
    # proxies in front of that you'll have to add yourself.
    trustedDownstream:
    - 127.0.0.1
    - "::1"

  # Whether to allow OctoPrint to be embedded in a frame or not. Note that depending on your setup you might
  # have to set SameSite to None, Secure to true and serve OctoPrint through a reverse proxy that enables https
  # for cookies and thus logging in to work
  allowFraming: false

  # Settings for further configuration of the cookies that OctoPrint sets (login, remember me, ...)
  cookies:
    # SameSite setting to use on the cookies. Possible values are None, Lax and Strict. Defaults to not set but
    # be advised that many browsers now default to Lax unless set as Secure, explicitly setting the cookie type
    # here and served over https, which causes issues with embedding OctoPrint in frames.
    #
    # See also https://www.chromestatus.com/feature/5088147346030592,
    # https://www.chromestatus.com/feature/5633521622188032 and issue #3482
    samesite: lax

    # Whether to set the Secure flag to true on cookies. Defaults to false. Only set to true if you are running
    # OctoPrint behind a reverse proxy taking care of SSL termination.
    secure: false

  # Settings for file uploads to OctoPrint, such as maximum allowed file size and
  # header suffixes to use for streaming uploads. OctoPrint does some nifty things internally in
  # order to allow streaming of large file uploads to the application rather than just storing
  # them in memory. For that it needs to do some rewriting of the incoming upload HTTP requests,
  # storing the uploaded file to a temporary location on disk and then sending an internal request
  # to the application containing the original filename and the location of the temporary file.
  uploads:

    # Maximum size of uploaded files in bytes, defaults to 1GB.
    maxSize: 1073741824

    # Suffix used for storing the filename in the file upload headers when streaming uploads.
    nameSuffix: name

    # Suffix used for storing the path to the temporary file in the file upload headers when
    # streaming uploads.
    pathSuffix: path

  # Maximum size of requests other than file uploads in bytes, defaults to 100KB.
  maxSize: 102400

  # Commands to restart/shutdown octoprint or the system it's running on
  commands:

    # Command to restart OctoPrint, defaults to being unset
    serverRestartCommand: sudo service octoprint restart

    # Command to restart the system OctoPrint is running on, defaults to being unset
    systemRestartCommand: sudo shutdown -r now

    # Command to shut down the system OctoPrint is running on, defaults to being unset
    systemShutdownCommand: sudo shutdown -h now

    # pip command associated with OctoPrint, used for installing plugins and updates,
    # if unset (default) the command will be autodetected based on the current python
    # executable - unless you have a really special setup this is the right way to do
    # it and there should be no need to ever even touch this setting
    localPipCommand: None

  # Configuration of the regular online connectivity check
  onlineCheck:
    # whether the online check is enabled, defaults to false due to valid privacy concerns
    enabled: false

    # interval in which to check for online connectivity (in seconds)
    interval: 300

    # DNS host against which to check (default: 8.8.8.8 aka Google's DNS)
    host: 8.8.8.8

    # DNS port against which to check (default: 53 - the default DNS port)
    port: 53

  # Configuration of the plugin blacklist
  pluginBlacklist:
    # whether use of the blacklist is enabled, defaults to false
    enabled: false

    # the URL from which to fetch the blacklist
    url: http://plugins.octoprint.org/blacklist.json

    # time to live of the cached blacklist, in seconds (default: 15 minutes)
    ttl: 15 * 60

  # Settings of when to display what disk space warning
  diskspace:

    # Threshold (bytes) after which to consider disk space becoming sparse,
    # defaults to 500MB
    warning: 63488000

    # Threshold (bytes) after which to consider disk space becoming critical,
    # defaults to 200MB
    critical: 209715200

  # Configuration of the preemptive cache
  preemptiveCache:

    # which server paths to exclude from the preemptive cache
    exceptions:
    - /some/path

    # How many days to leave unused entries in the preemptive cache config
    until: 7

  # Configuration of the client IP check to warn about connections from external networks
  ipCheck:

    # whether to enable the check, defaults to true
    enabled: true

    # additional non-local subnets to consider trusted, in CIDR notation, e.g. "192.168.1.0/24"
    trustedSubnets: []

Note

If you want to run OctoPrint behind a reverse proxy such as HAProxy or Nginx and use a different base URL than the server root / you have two options to achieve this. One approach is using the configuration settings baseUrl and scheme mentioned above in which OctoPrint will only work under the configured base URL.

The second and better approach is to make your proxy send a couple of custom headers with each forwarded requests:

X-Script-Name: should contain your custom baseUrl (absolute server path), e.g. /octoprint

X-Scheme: should contain your custom URL scheme to use (if different from http), e.g. https

If you use these headers OctoPrint will work both via the reverse proxy as well as when called directly. Take a look into OctoPrint’s wiki for some examples on how to configure this.

Note

If you want to embed OctoPrint in a frame, you’ll need to set allowFraming to true or your browser will prevent this.

In future browser builds you will also have to make sure you frame is on the same domain as OctoPrint or that OctoPrint is served via https through a reverse proxy and has set cookies.secure to true or your browser will refuse to persist cookies and logging in will not work.

See also Cookies default to SameSite=Lax and Reject insecure SameSite=None cookies as well as this ticket, and this twitter thread on why OctoPrint cannot solve this on its own/ship with https that doesn’t cause scary warnings in your browser.

Slicing 

Settings for the built-in slicing support:

# Slicing settings
slicing:

  # Whether to enable slicing support or not
  enabled: true

  # Default slicer to use
  defaultSlicer: null

  # Default slicing profiles per slicer
  defaultProfiles:
    curalegacy: ...

System 

Use the following settings to add custom system commands to the “System” dropdown within OctoPrint’s top bar.

Commands consist of a name shown to the user, an action identifier used by the code and the actual command including any argument needed for its execution. By default OctoPrint blocks until the command has returned so that the exit code can be used to show a success or failure message; use the flag async: true for commands that don’t return.

Optionally you can add a confirmation message to display before actually executing the command (should be set to False if a confirmation dialog is not desired).

The following example defines a command for shutting down the system under Linux. It assumes that the user under which OctoPrint is running is allowed to do this without password entry:

system:
  actions:
  - name: Shutdown
    action: shutdown
    command: sudo shutdown -h now
    confirm: You are about to shutdown the system.

You can also add a divider by setting action to divider like this:

system:
  actions:
  - action: divider

Temperature 

Use the following settings to configure temperature profiles which will be displayed in the temperature tab:

temperature:
  profiles:
  - name: ABS
    extruder: 210
    bed: 100
  - name: PLA
    extruder: 180
    bed: 60

Terminal Filters 

Use the following settings to define a set of terminal filters to display in the terminal tab for filtering certain lines from the display terminal log.

Use Javascript regular expressions:

# A list of filters to display in the terminal tab. Defaults to the filters shown below
terminalFilters:
- name: Suppress temperature messages
  regex: '(Send: (N\d+\s+)?M105)|(Recv:\s+(ok\s+([PBN]\d+\s+)*)?([BCLPR]|T\d*):-?\d+)'
- name: Suppress SD status messages
  regex: '(Send: (N\d+\s+)?M27)|(Recv: SD printing byte)|(Recv: Not SD printing)'
- name: Suppress wait responses
  regex: 'Recv: wait'
- name: Suppress processing responses
  regex: 'Recv: (echo:\s*)?busy:\s*processing'

Webcam 

Use the following settings to configure webcam support:

webcam:
  # Use this option to enable display of a webcam stream in the UI, e.g. via MJPG-Streamer.
  # Webcam support will be disabled if not set
  stream: http://<stream host>:<stream port>/?action=stream

  # Use this option to enable timelapse support via snapshot, e.g. via MJPG-Streamer.
  # Timelapse support will be disabled if not set
  snapshot: http://<stream host>:<stream port>/?action=snapshot

  # Path to ffmpeg binary to use for creating timelapse recordings.
  # Timelapse support will be disabled if not set
  ffmpeg: /path/to/ffmpeg

  # Number of how many threads to instruct ffmpeg to use for encoding. Defaults to 1.
  # Should be left at 1 for RPi1.
  ffmpegThreads: 1

  # Videocodec to be used for encoding. Defaults to mpeg2video.
  ffmpegVideoCodec: mpeg2video

  # The bitrate to use for rendering the timelapse video. This gets directly passed to ffmpeg.
  bitrate: 5000k

  # Whether to include a "created with OctoPrint" watermark in the generated timelapse movies
  watermark: true

  # Whether to flip the webcam horizontally
  flipH: false

  # Whether to flip the webcam vertically
  flipV: false

  # Whether to rotate the webcam 90° counter clockwise
  rotate90: false

  # The default timelapse settings.
  timelapse:

    # The timelapse type. Can be either "off", "zchange" or "timed". Defaults to "off"
    type: timed

    # The framerate at which to render the movie
    fps: 25

    # The number of seconds in the rendered video to add after a finished print. The exact way how the
    # additional images will be recorded depends on timelapse type. Timed timelapses continue to
    # record just like at the beginning, so the recording will continue another
    # fps * postRoll * interval seconds. Zchange timelapses will take one final picture and add it fps * postRoll
    postRoll: 0

    # Additional options depending on the timelapse type. All timelapses take a postRoll and an fps setting.
    options:

      # Timed timelapses only: The interval which to leave between images in seconds
      interval: 2

      # Timed timelapses only: Whether to capture the snapshots for the post roll (true) or just copy
      # the last captured snapshot from the print over and over again (false)
      capturePostRoll: true

      # ZChange timelapses only: Z-hop height during retractions to ignore for capturing snapshots
      retractionZHop: 0.0

  # After how many days unrendered timelapses will be deleted
  cleanTmpAfterDays: 7