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A file conversion Web API in Pyramid

Project description

Convertit is a format conversion webservice.

Retrieve your document in an other format ! The input file is converted and served back ! Using a dead simple GET request, documents are pulled. Using POST request, it takes the attachment.

Supported conversions:

  • odt -> pdf

  • odt -> doc

  • ods -> xls

  • csv -> ods

  • csv -> xls

  • svg -> pdf

  • svg -> png

Previously converted documents are cleaned along the way (on each request).


Using GET request

Example, convert from odt to pdf :

curl http://convertit/?url=http://server/document.odt&to=application/pdf
HTTP/1.1 302 Found
Content-Disposition: attachement; filename=document.pdf

GET parameters:

url: absolute url of the document to be converted.

“url” also supports a “{X_FORWARDED_FOR}” placeholder for requests not knowing their own host. “{X_FORWARDED_FOR}” will be replaced with the corresponding “X_FORWARDED_FOR” header if available. Be warned that “X_FORWARDED_FOR” is not a safe value since it can be modified by user agents or given false value by forward proxies. Use only if really needed. Exemple:

curl "http://convertit/?url=http://{X_FORWARDED_FOR}/document.odt&to=application/pdf"

Using POST request

Upload data in POST parameter named file:

curl -F "file=@tiger.svg" http://convertit/?to=image/png
HTTP/1.1 302 Found
Content-Disposition: attachement; filename=tiger.png

Query parameters

  • to: output mimetype (optionnal, default to application/pdf if not provided);

  • from: input mimetype (optionnal, guessed from input url or file if not provided).


System dependencies

  • for OpenDocument support: unoconv

  • for SVG support: inkscape

Conversion binaries should be in system PATH (which is used internally.)


  • Download and extract a released tarball from pypi

  • The bleeding edge version is hosted on github

    git clone
    cd convertit


make serve

Once the application is running, you may visit http://localhost:6543/ in your browser.

Run tests:

make tests


Using gunicorn for example :

gunicorn --workers=1 --paste=production.ini

Using Docker :

sudo docker build -t="convertit" .
sudo docker run -p :6543 convertit


Open an issue to report a bug or request a new feature.





  • Antoine Cezar

  • Alex Marandon



2.0.0 (2019-11-22)

  • Move from Python 2 to Python 3

1.1.5 (2015-04-01)

  • Fix systematic crash in unoconv converter

1.1.4 (2015-04-01)

  • Serialize parallel libreoffice conversions with flock instead of celery

1.1.3 (2015-01-20)

  • Serialize parallel libreoffice conversions

1.1.2 (2014-12-30)

  • Fix a crash in unoconv error handling

  • Log errors

  • Add a warning about unoconv not able to work in parallel

1.1.1 (2014-12-18)

  • Send HTTP errors as raw strings instead of HTML documents

1.1.0 (2014-05-21)

  • Use original request header Accept-language to download the URL

  • Add {X_FORWARDED_FOR} placeholder in GET url parameter. Replaced by the corresponding header if available. It avoids the client initiating the request to be aware of its own address. Exemple:

    curl "http://convertit/?url=http://{X_FORWARDED_FOR}/document.odt&to=application/pdf"

1.0 (2013-09-03)

  • Initial working version

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