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Editorial Team
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Asked: 2026-05-13T20:15:33+00:00

I have a patch file (unified diff), like the output from svn diff ,

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I have a patch file (unified diff), like the output from svn diff, git diff, or diff -u .... I want to review it, but the unified diff format – especially with many files & changes – is hard on my eyes.

How can I get a nicely-formatted diff view from the patch file? I don’t have the files themselves, only the diff, so I can’t use all the regular diff tools.

So far my 2 best tactics are:

  1. Load the diff in gvim and get some syntax highlighting
  2. Paste the diff into a Trac wiki in a #!diff-formatted section and click “preview” – this creates an awesome diff view:
{{{
#!diff
<unified diff here>
}}}

Are there desktop tools that can do this? Is there a way to persuade kdiff3 / diffmerge / p4merge / etc. to visualize the patch file? Something that replicates Trac’s visualization would be great as well.

EDIT: bonus points for Windows support as well, preferably with an installer or a pain-free installation.

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1 Answer

  1. Editorial Team

    Try using kompare – http://www.caffeinated.me.uk/kompare/. It should do the job.

    EDIT: Also, check out the list of file comparison tools here: http://en.wikipedia.org/wiki/Comparison_of_file_comparison_tools – have a look at the column “Patch preview” in one of the tables.

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