Create Diff between HTML pages

An error (Tidy errors: [ReportItem('line 2876 col 50 - Error: <validator-origin> is not recognized!')]) occured trying to get https://s3.amazonaws.com/pr-preview/w3c/webappsec-cowl/master/4ade9c9.html.

Tip: if the document uses the W3C convention on linking to its previous version, you can specify only the address of the new document — the previous link will be automatically detected.

Diff markings

This service relies on GNU diff. The found differences are roughly marked as follow:

deleted text is shown in pink with down-arrows (as styled for a <del> element)
where there is replacement, it’s shown in green with bi-directional arrows,
where there is newly inserted text, it’s yellow with up arrows (<ins> element)

script $Revision: 1.64 $ of $Date: 2017/10/16 10:21:39 $
by Dominique Hazaël-Massieux
based on Shane McCarron’ Perl script wrapped in a Python CGI