Configuration — Paperless-ng 1.5.0 documentation (2024)

Required services

PAPERLESS_REDIS=<url>

This is required for processing scheduled tasks such as email fetching, indexoptimization and for training the automatic document matcher.

Defaults to redis://localhost:6379.

PAPERLESS_DBHOST=<hostname>

By default, sqlite is used as the database backend. This can be changed here.Set PAPERLESS_DBHOST and PostgreSQL will be used instead of mysql.

PAPERLESS_DBPORT=<port>

Adjust port if necessary.

Default is 5432.

PAPERLESS_DBNAME=<name>

Database name in PostgreSQL.

Defaults to “paperless”.

PAPERLESS_DBUSER=<name>

Database user in PostgreSQL.

Defaults to “paperless”.

PAPERLESS_DBPASS=<password>

Database password for PostgreSQL.

Defaults to “paperless”.

PAPERLESS_DBSSLMODE=<mode>

SSL mode to use when connecting to PostgreSQL.

See the official documentation about sslmode.

Default is prefer.

Paths and folders

PAPERLESS_CONSUMPTION_DIR=<path>

This where your documents should go to be consumed. Make sure that it existsand that the user running the paperless service can read/write its contentsbefore you start Paperless.

Don’t change this when using docker, as it only changes the path within thecontainer. Change the local consumption directory in the docker-compose.ymlfile instead.

Defaults to “../consume/”, relative to the “src” directory.

PAPERLESS_DATA_DIR=<path>

This is where paperless stores all its data (search index, SQLite database,classification model, etc).

Defaults to “../data/”, relative to the “src” directory.

PAPERLESS_MEDIA_ROOT=<path>

This is where your documents and thumbnails are stored.

You can set this and PAPERLESS_DATA_DIR to the same folder to have paperlessstore all its data within the same volume.

Defaults to “../media/”, relative to the “src” directory.

PAPERLESS_STATICDIR=<path>

Override the default STATIC_ROOT here. This is where all static filescreated using “collectstatic” manager command are stored.

Unless you’re doing something fancy, there is no need to override this.

Defaults to “../static/”, relative to the “src” directory.

PAPERLESS_FILENAME_FORMAT=<format>

Changes the filenames paperless uses to store documents in the media directory.See File name handling for details.

Default is none, which disables this feature.

PAPERLESS_LOGGING_DIR=<path>

This is where paperless will store log files.

Defaults to “PAPERLESS_DATA_DIR/log/”.

Logging

PAPERLESS_LOGROTATE_MAX_SIZE=<num>

Maximum file size for log files before they are rotated, in bytes.

Defaults to 1 MiB.

PAPERLESS_LOGROTATE_MAX_BACKUPS=<num>

Number of rotated log files to keep.

Defaults to 20.

Hosting & Security

PAPERLESS_SECRET_KEY=<key>

Paperless uses this to make session tokens. If you expose paperless on theinternet, you need to change this, since the default secret is well known.

Use any sequence of characters. The more, the better. You don’t need toremember this. Just face-roll your keyboard.

Default is listed in the file src/paperless/settings.py.

PAPERLESS_ALLOWED_HOSTS<comma-separated-list>

If you’re planning on putting Paperless on the open internet, then youreally should set this value to the domain name you’re using. Failing to doso leaves you open to HTTP host header attacks:https://docs.djangoproject.com/en/3.1/topics/security/#host-header-validation

Just remember that this is a comma-separated list, so “example.com” is fine,as is “example.com,www.example.com”, but NOT ” example.com” or “example.com,”

Defaults to “*”, which is all hosts.

PAPERLESS_CORS_ALLOWED_HOSTS<comma-separated-list>

You need to add your servers to the list of allowed hosts that can do CORScalls. Set this to your public domain name.

Defaults to “http://localhost:8000”.

PAPERLESS_FORCE_SCRIPT_NAME=<path>

To host paperless under a subpath url like example.com/paperless you setthis value to /paperless. No trailing slash!

Defaults to none, which hosts paperless at “/”.

PAPERLESS_STATIC_URL=<path>

Override the STATIC_URL here. Unless you’re hosting Paperless off asubdomain like /paperless/, you probably don’t need to change this.

Defaults to “/static/”.

PAPERLESS_AUTO_LOGIN_USERNAME=<username>

Specify a username here so that paperless will automatically perform loginwith the selected user.

See Also

Setup - Paperless-ngxBasic Usage - Paperless-ngxSetup — Paperless-ng 1.5.0 documentationDokumentenverwaltung paperless-ng mit Docker auf einem Synology-NAS installieren

Danger

Do not use this when exposing paperless on the internet. There are nochecks in place that would prevent you from doing this.

Defaults to none, which disables this feature.

PAPERLESS_ADMIN_USER=<username>

If this environment variable is specified, Paperless automatically createsa superuser with the provided username at start. This is useful in caseswhere you can not run the createsuperuser command seperately, such as Kubernetesor AWS ECS.

Requires PAPERLESS_ADMIN_PASSWORD to be set.

Note

This will not change an existing [super]user’s password, nor willit recreate a user that already exists. You can leave this throughoutthe lifecycle of the containers.

PAPERLESS_ADMIN_MAIL=<email>

(Optional) Specify superuser email address. Only used whenPAPERLESS_ADMIN_USER is set.

Defaults to root@localhost.

PAPERLESS_ADMIN_PASSWORD=<password>

Only used when PAPERLESS_ADMIN_USER is set.This will be the password of the automatically created superuser.

PAPERLESS_COOKIE_PREFIX=<str>

Specify a prefix that is added to the cookies used by paperless to identifythe currently logged in user. This is useful for when you’re running twoinstances of paperless on the same host.

After changing this, you will have to login again.

Defaults to "", which does not alter the cookie names.

PAPERLESS_ENABLE_HTTP_REMOTE_USER=<bool>

Allows authentication via HTTP_REMOTE_USER which is used by some SSOapplications.

Warning

This will allow authentication by simply adding a Remote-User: <username> headerto a request. Use with care! You especially must ensure that any such header is notpassed from your proxy server to paperless.

If you’re exposing paperless to the internet directly, do not use this.

Also see the warning in the official documentation <https://docs.djangoproject.com/en/3.1/howto/auth-remote-user/#configuration>.

Defaults to false which disables this feature.

PAPERLESS_HTTP_REMOTE_USER_HEADER_NAME=<str>

If PAPERLESS_ENABLE_HTTP_REMOTE_USER is enabled, this property allows tocustomize the name of the HTTP header from which the authenticated usernameis extracted. Values are in terms of[HttpRequest.META](https://docs.djangoproject.com/en/3.1/ref/request-response/#django.http.HttpRequest.META).Thus, the configured value must start with HTTP_ followed by thenormalized actual header name.

Defaults to HTTP_REMOTE_USER.

OCR settings

Paperless uses OCRmyPDF forperforming OCR on documents and images. Paperless uses sensible defaults formost settings, but all of them can be configured to your needs.

PAPERLESS_OCR_LANGUAGE=<lang>

Customize the language that paperless will attempt to use whenparsing documents.

It should be a 3-letter language code consistent with ISO639: https://www.loc.gov/standards/iso639-2/php/code_list.php

Set this to the language most of your documents are written in.

This can be a combination of multiple languages such as deu+eng,in which case tesseract will use whatever language matches best.Keep in mind that tesseract uses much more cpu time with multiplelanguages enabled.

Defaults to “eng”.

Note: If your language contains a ‘-’ such as chi-sim, you must use chi_sim

PAPERLESS_OCR_MODE=<mode>

Tell paperless when and how to perform ocr on your documents. Four modesare available:

• skip: Paperless skips all pages and will perform ocr only on pageswhere no text is present. This is the safest option.

• skip_noarchive: In addition to skip, paperless won’t create anarchived version of your documents when it finds any text in them.This is useful if you don’t want to have two almost-identical versionsof your digital documents in the media folder. This is the fastest option.

• redo: Paperless will OCR all pages of your documents and attempt toreplace any existing text layers with new text. This will be useful fordocuments from scanners that already performed OCR with insufficientresults. It will also perform OCR on purely digital documents.

  This option may fail on some documents that have features that cannotbe removed, such as forms. In this case, the text from the document isused instead.

• force: Paperless rasterizes your documents, converting any textinto images and puts the OCRed text on top. This works for all documents,however, the resulting document may be significantly larger and textwon’t appear as sharp when zoomed in.

The default is skip, which only performs OCR when necessary and alwayscreates archived documents.

Read more about this in the OCRmyPDF documentation.

PAPERLESS_OCR_CLEAN=<mode>

Tells paperless to use unpaper to clean any input document beforesending it to tesseract. This uses more resources, but generally resultsin better OCR results. The following modes are available:

• clean: Apply unpaper.

• clean-final: Apply unpaper, and use the cleaned images to build theoutput file instead of the original images.

• none: Do not apply unpaper.

Defaults to clean.

Note

clean-final is incompatible with ocr mode redo. When bothclean-final and the ocr mode redo is configured, cleanis used instead.

PAPERLESS_OCR_DESKEW=<bool>

Tells paperless to correct skewing (slight rotation of input images mainlydue to improper scanning)

Defaults to true, which enables this feature.

Note

Deskewing is incompatible with ocr mode redo. Deskewing will getdisabled automatically if redo is used as the ocr mode.

PAPERLESS_OCR_ROTATE_PAGES=<bool>

Tells paperless to correct page rotation (90°, 180° and 270° rotation).

If you notice that paperless is not rotating incorrectly rotatedpages (or vice versa), try adjusting the threshold up or down (see below).

Defaults to true, which enables this feature.

PAPERLESS_OCR_ROTATE_PAGES_THRESHOLD=<num>

Adjust the threshold for automatic page rotation by PAPERLESS_OCR_ROTATE_PAGES.This is an arbitrary value reported by tesseract. “15” is a very conservative value,whereas “2” is a very aggressive option and will often result in correctly rotated pagesbeing rotated as well.

Defaults to “12”.

PAPERLESS_OCR_OUTPUT_TYPE=<type>

Specify the the type of PDF documents that paperless should produce.

• pdf: Modify the PDF document as little as possible.

• pdfa: Convert PDF documents into PDF/A-2b documents, which is asubset of the entire PDF specification and meant for storingdocuments long term.

• pdfa-1, pdfa-2, pdfa-3 to specify the exact version ofPDF/A you wish to use.

If not specified, pdfa is used. Remember that paperless also keepsthe original input file as well as the archived version.

PAPERLESS_OCR_PAGES=<num>

Tells paperless to use only the specified amount of pages for OCR. Documentswith less than the specified amount of pages get OCR’ed completely.

Specifying 1 here will only use the first page.

When combined with PAPERLESS_OCR_MODE=redo or PAPERLESS_OCR_MODE=force,paperless will not modify any text it finds on excluded pages and copy itverbatim.

Defaults to 0, which disables this feature and always uses all pages.

PAPERLESS_OCR_IMAGE_DPI=<num>

Paperless will OCR any images you put into the system and convert theminto PDF documents. This is useful if your scanner produces images.In order to do so, paperless needs to know the DPI of the image.Most images from scanners will have this information embedded andpaperless will detect and use that information. In case this fails, ituses this value as a fallback.

Set this to the DPI your scanner produces images at.

Default is none, which will automatically calculate image DPI so thatthe produced PDF documents are A4 sized.

PAPERLESS_OCR_USER_ARGS=<json>

OCRmyPDF offers many more options. Use this parameter to specify anyadditional arguments you wish to pass to OCRmyPDF. Since Paperless usesthe API of OCRmyPDF, you have to specify these in a format that can bepassed to the API. See the API reference of OCRmyPDFfor valid parameters. All command line options are supported, but theyuse underscores instead of dashes.

Caution

Paperless has been tested to work with the OCR options providedabove. There are many options that are incompatible with each other,so specifying invalid options may prevent paperless from consumingany documents.

Specify arguments as a JSON dictionary. Keep note of lower case booleansand double quoted parameter names and strings. Examples:

{"deskew": true, "optimize": 3, "unpaper_args": "--pre-rotate 90"}

Tika settings

Paperless can make use of Tika andGotenberg for parsing andconverting “Office” documents (such as “.doc”, “.xlsx” and “.odt”). If youwish to use this, you must provide a Tika server and a Gotenberg server,configure their endpoints, and enable the feature.

PAPERLESS_TIKA_ENABLED=<bool>

Enable (or disable) the Tika parser.

Defaults to false.

PAPERLESS_TIKA_ENDPOINT=<url>

Set the endpoint URL were Paperless can reach your Tika server.

Defaults to “http://localhost:9998”.

PAPERLESS_TIKA_GOTENBERG_ENDPOINT=<url>

Set the endpoint URL were Paperless can reach your Gotenberg server.

Defaults to “http://localhost:3000”.

If you run paperless on docker, you can add those services to the docker-composefile (see the provided docker-compose.tika.yml file for reference). The changesrequires are as follows:

services: # ... webserver: # ... environment: # ... PAPERLESS_TIKA_ENABLED: 1 PAPERLESS_TIKA_GOTENBERG_ENDPOINT: http://gotenberg:3000 PAPERLESS_TIKA_ENDPOINT: http://tika:9998 # ... gotenberg: image: thecodingmachine/gotenberg restart: unless-stopped environment: DISABLE_GOOGLE_CHROME: 1 tika: image: apache/tika restart: unless-stopped

Add the configuration variables to the environment of the webserver (alternativelyput the configuration in the docker-compose.env file) and add the additionalservices below the webserver service. Watch out for indentation.

Software tweaks

PAPERLESS_TASK_WORKERS=<num>

Paperless does multiple things in the background: Maintain the search index,maintain the automatic matching algorithm, check emails, consume documents,etc. This variable specifies how many things it will do in parallel.

PAPERLESS_THREADS_PER_WORKER=<num>

Furthermore, paperless uses multiple threads when consuming documents tospeed up OCR. This variable specifies how many pages paperless will processin parallel on a single document.

Caution

Ensure that the product

PAPERLESS_TASK_WORKERS * PAPERLESS_THREADS_PER_WORKER

does not exceed your CPU core count or else paperless will be extremely slow.If you want paperless to process many documents in parallel, choose a highworker count. If you want paperless to process very large documents faster,use a higher thread per worker count.

The default is a balance between the two, according to your CPU core count,with a slight favor towards threads per worker:

CPU core count	Workers	Threads
1	1	1
2	2	1
4	2	2
6	2	3
8	2	4
12	3	4
16	4	4

If you only specify PAPERLESS_TASK_WORKERS, paperless will adjustPAPERLESS_THREADS_PER_WORKER automatically.

PAPERLESS_TIME_ZONE=<timezone>

Set the time zone here.See https://docs.djangoproject.com/en/3.1/ref/settings/#std:setting-TIME_ZONEfor details on how to set it.

Defaults to UTC.

PAPERLESS_CONSUMER_POLLING=<num>

If paperless won’t find documents added to your consume folder, it mightnot be able to automatically detect filesystem changes. In that case,specify a polling interval in seconds here, which will then cause paperlessto periodically check your consumption directory for changes. This will alsodisable listening for file system changes with inotify.

Defaults to 0, which disables polling and uses filesystem notifications.

PAPERLESS_CONSUMER_DELETE_DUPLICATES=<bool>

When the consumer detects a duplicate document, it will not touch theoriginal document. This default behavior can be changed here.

Defaults to false.

PAPERLESS_CONSUMER_RECURSIVE=<bool>

Enable recursive watching of the consumption directory. Paperless willthen pickup files from files in subdirectories within your consumptiondirectory as well.

Defaults to false.

PAPERLESS_CONSUMER_SUBDIRS_AS_TAGS=<bool>

Set the names of subdirectories as tags for consumed files.E.g. <CONSUMPTION_DIR>/foo/bar/file.pdf will add the tags “foo” and “bar” tothe consumed file. Paperless will create any tags that don’t exist yet.

This is useful for sorting documents with certain tags such as car ortodo prior to consumption. These folders won’t be deleted.

PAPERLESS_CONSUMER_RECURSIVE must be enabled for this to work.

Defaults to false.

PAPERLESS_CONVERT_MEMORY_LIMIT=<num>

On smaller systems, or even in the case of Very Large Documents, the consumermay explode, complaining about how it’s “unable to extend pixel cache”. Insuch cases, try setting this to a reasonably low value, like 32. Thedefault is to use whatever is necessary to do everything without writing todisk, and units are in megabytes.

For more information on how to use this value, you should searchthe web for “MAGICK_MEMORY_LIMIT”.

Defaults to 0, which disables the limit.

PAPERLESS_CONVERT_TMPDIR=<path>

Similar to the memory limit, if you’ve got a small system and your OS mounts/tmp as tmpfs, you should set this to a path that’s on a physical disk, like/home/your_user/tmp or something. ImageMagick will use this as scratch spacewhen crunching through very large documents.

For more information on how to use this value, you should searchthe web for “MAGICK_TMPDIR”.

Default is none, which disables the temporary directory.

PAPERLESS_OPTIMIZE_THUMBNAILS=<bool>

Use optipng to optimize thumbnails. This usually reduces the size ofthumbnails by about 20%, but uses considerable compute time duringconsumption.

Defaults to true.

PAPERLESS_POST_CONSUME_SCRIPT=<filename>

After a document is consumed, Paperless can trigger an arbitrary script ifyou like. This script will be passed a number of arguments for you to workwith. For more information, take a look at Post-consumption script.

The default is blank, which means nothing will be executed.

PAPERLESS_FILENAME_DATE_ORDER=<format>

Paperless will check the document text for document date information.Use this setting to enable checking the document filename for dateinformation. The date order can be set to any option as specified inhttps://dateparser.readthedocs.io/en/latest/settings.html#date-order.The filename will be checked first, and if nothing is found, the documenttext will be checked as normal.

Defaults to none, which disables this feature.

PAPERLESS_THUMBNAIL_FONT_NAME=<filename>

Paperless creates thumbnails for plain text files by rendering the contentof the file on an image and uses a predefined font for that. Thisfont can be changed here.

Note that this won’t have any effect on already generated thumbnails.

Defaults to /usr/share/fonts/liberation/LiberationSerif-Regular.ttf.

PAPERLESS_IGNORE_DATES=<string>

Paperless parses a documents creation date from filename and file content.You may specify a comma separated list of dates that should be ignored duringthis process. This is useful for special dates (like date of birth) that appearin documents regularly but are very unlikely to be the documents creation date.

You may specify dates in a multitude of formats supported by dateparser (seehttps://dateparser.readthedocs.io/en/latest/#popular-formats) but as the datesneed to be comma separated, the options are limited.Example: “2020-12-02,22.04.1999”

Defaults to an empty string to not ignore any dates.

PAPERLESS_DATE_ORDER=<format>

Paperless will try to determine the document creation date from its contents.Specify the date format Paperless should expect to see within your documents.

This option defaults to DMY which translates to day first, month second, and yearlast order. Characters D, M, or Y can be shuffled to meet the required order.

PAPERLESS_CONSUMER_IGNORE_PATTERNS=<json>

By default, paperless ignores certain files and folders in the consumptiondirectory, such as system files created by the Mac OS.

This can be adjusted by configuring a custom json array with patterns to exclude.

Defautls to [".DS_STORE/*", "._*", ".stfolder/*"].

Binaries

There are a few external software packages that Paperless expects to find onyour system when it starts up. Unless you’ve done something creative withtheir installation, you probably won’t need to edit any of these. However,if you’ve installed these programs somewhere where simply typing the name ofthe program doesn’t automatically execute it (ie. the program isn’t in your$PATH), then you’ll need to specify the literal path for that program.

PAPERLESS_CONVERT_BINARY=<path>

Defaults to “/usr/bin/convert”.

PAPERLESS_GS_BINARY=<path>

Defaults to “/usr/bin/gs”.

PAPERLESS_OPTIPNG_BINARY=<path>

Defaults to “/usr/bin/optipng”.

Docker-specific options

These options don’t have any effect in paperless.conf. These options adjustthe behavior of the docker container. Configure these in docker-compose.env.

PAPERLESS_WEBSERVER_WORKERS=<num>

The number of worker processes the webserver should spawn. More worker processesusually result in the front end to load data much quicker. However, each worker processalso loads the entire application into memory separately, so increasing this valuewill increase RAM usage.

Consider configuring this to 1 on low power devices with limited amount of RAM.

Defaults to 2.

USERMAP_UID=<uid>

The ID of the paperless user in the container. Set this to your actual user ID on thehost system, which you can get by executing

$ id -u

Paperless will change ownership on its folders to this user, so you need to get this rightin order to be able to write to the consumption directory.

Defaults to 1000.

USERMAP_GID=<gid>

The ID of the paperless Group in the container. Set this to your actual group ID on thehost system, which you can get by executing

$ id -g

Paperless will change ownership on its folders to this group, so you need to get this rightin order to be able to write to the consumption directory.

Defaults to 1000.

PAPERLESS_OCR_LANGUAGES=<list>

Additional OCR languages to install. By default, paperless comes withEnglish, German, Italian, Spanish and French. If your language is not in this list, installadditional languages with this configuration option:

PAPERLESS_OCR_LANGUAGES=tur ces

To actually use these languages, also set the default OCR language of paperless:

PAPERLESS_OCR_LANGUAGE=tur

Defaults to none, which does not install any additional languages.