Parsing/Get involved

UPDATE You can now see the results of visual differences tests on a sample of articles: http://mw-expt-tests.wmflabs.org/.
 *  05 August 2017

UPDATE Please see Parsing/Replacing_Tidy/Linter/Stats/July31 to learn how your wiki is doing with the Tidy-related fixes.
 *  31 July 2017

NEW We will not use Tidy on Wikimedia wikis in the future. It will be replaced by June 2018. It could be earlier. Editors' support is necessary to fix pages that could break. See the simplified instructions for editors; you can use tools such as Linter or WPCleaner to assist you.
 *  10 July 2017

UPDATE Because of the preprocessor changes, pages containing certain syntax are now broken (in some cases, you may need to refresh to notice it). The latest update to the list of the affected pages on each wiki was just published.
 *  26 June 2017

NEW Markup that looks like code for language variants might need to be fixed. This is because of some code fixes to the preprocessor and affects all wikis. You can now see the full list of wikis with this problem and help fix them to avoid that things break later. You might find false positives. Read more about what to fix. You can use community tools such as AutoWikiBrowser to assist you.
 *  15 May 2017