Offline content generator

Wikimedia engineering activityWikimedia Engineering Offline Content Generator (OCG) Creates offline formats from collections of mediawiki articles. Group: Features Start: 2014-01 End: 2017-09 Team: Arlo Breault, Marc Ordinas i Llopis, Subramanya Sastry Lead: C. Scott Ananian

The Offline Content Generator service created offline formats, such as PDF and even plaintext, from collections of mediawiki articles; ePub and ZIM were planned for the future but never implemented. The Collection extension is used via Special:Book to create collections. The OCG service then invokes a /Bundler to spider the articles and fetch all images, stylesheets, etc required to render them. One of several /Backends are then invoked to convert the bundle into a PDF, ZIM file, or other appropriate output format.

See wikitech:OCG for more information.

The service was turned off on Wikimedia wikis in October 2017 (background: Reading/Web/PDF Functionality T150871).

See also

• /2013 Code Sprint, project page for 2013 code sprint which created OCG
• /Bundle format
• /metabook.json
• /print-on-demand service
• wikitech:OCG, contains WMF sysadmin documentation for the OCG service.
• August 2016 community discussion with some remarks about the history of OCG