Compare versions of your Dropbox files in-browser or with your configured diff tool. Trigger from any "Version history" page.
Current Version Release Notes:
2017-04-18 update (version 184.108.40.206) - Update to match latest Dropbox format change.
2017-03-13 update (version 220.127.116.11-22) - Bug fix for diffing non-text files, and files larger than 4K; please get latest "DropboxDiff Helper".
2017-01-26 update (version 18.104.22.168) - Implement "Ignore exit status" option.
2017-01-22 update (versions 22.214.171.124-19) - Updated installation instructions for Mac/Linux; bug fixes.
Provides two options for comparing different versions of your Dropbox files: 1) an external diff tool, or 2) a side-by-side diff within your browser. This can be TortoiseMerge, KDiff3, FileMerge, or any tool which can be triggered from the command line.
From www.dropbox.com, in the "Version history" of any file, a column is added which allows you to select two versions to compare. Click the "Diff" button to trigger your configured diff tool, or the "Inline" button to view the difference in-browser.
Supports Windows, Mac, and Linux as far as I know, though I can't be sure every possible configuration is covered.
Please let me know if you run into any issues at http://blog.vicshih.com/2011/09/dropboxdiff-chrome-extension.html .
2017-01-21 update (version 126.96.36.199) - Support "Load older versions".
2017-01-18 update (version 188.8.131.52) - External diff restored; requires a separate "DropboxDiff Helper" installation.
2017-01-05 update (version 184.108.40.206) - Inline diff restored; external diff support coming soon. Removed NPAPI requirement, since it is no longer supported.
2014-01-05 update (version 220.127.116.11) - Inline diff implemented.
2014-01-04 update (version 18.104.22.168) - Account for "sjid" parameter in any position. Distinguish Diff button better.
2013-06-23 update (version 22.214.171.124) - Switch from background page to event page.
2013-01-05 update (version 126.96.36.199) - Fixed to support 64-bit linux. Added a Test button to the options page.
2012-11-05 update (version 188.8.131.52) - Fix for Mac - upgraded to FireBreath 1.7 (774c948f5e).
2012-08-31 update (version 184.108.40.206) - Better content security policy settings, upgrade to jQuery 1.8.0.
2012-08-31 update (version 220.127.116.11) - Update to manifest version 2.
2012-06-24 update (version 18.104.22.168) - Handle site change (table header removed).
2011-09-12 update (version 22.214.171.124) - Added extension description. Added example cygwin command line for Windows.