Wikipedia:WikiProject Check Wikipedia

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Checkwiki helps clean up syntax and other errors in the source code of Wikipedia by finding and fixing problems such as:

  • Eliminating errors in the wiki syntax, such as missing close tags or brackets;
  • Checking for accessibility issues, such as small print or heading problems;
  • Correcting, deleting or moving code that does not follow conventions, such as the position of references with respect to punctuation;
  • Finding articles that have invalid ISBNs (list available here)


  • The program scans every new dump for over 30 languages and creates a list of articles with errors.
  • For a few Wikipedias, the program scans newly revised articles on a daily basis to create a new list for users, omitting already-corrected articles.
  • A specific interface – here for the English project – facilitates the correction of problems detected by the program in the following three levels of ranking priorities errors. It helps keep the error lists updated in near real time by providing some statistics on corrections made recently.
  • You can download the Checkwiki programs at Github. The programs are licensed under GPLv3.


The following tools may be useful when checking Wikipedia:

The following scripts may also be helpful when checking Wikipedia:


Bots based upon AWB or Pywikibot can correct many of the problems.
Here are the bots actively working on English Wikipedia. They can be ported to other languages.

Name Active Errors fixed
Josvebot (task list · contribs) Not ATM 6, 16, 37
FrescoBot (task list · contribs) Yes 16, 48, 64
Snotbot (task list · contribs) Yes 7, 19, 25, 83
BG19bot (task list · contribs) Yes many
MenoBot (task list · contribs) Yes many
Xqbot (task list · contribs) Yes 3
Yobot (task list · contribs) Yes many

Bots fix some of the errors here automatically. Any error tagged with "BOT" is usually fixed by bot at some point, so manually fixing them is unnecessary.



  • Mark your changes as minor;
  • Justify the corrections made in the edit summary: Checkwiki error fix #10. Fix broken bracket;
  • When an error is fixed, click "done" in the web interface.

Note: tools like WPCleaner automatically follow the above recommendations.