Re: Showing differences between two versions of a score

Mark Knoop <[email protected]>
Newsgroups gmane.comp.gnu.lilypond.general
Message-ID <[email protected]>
>> On Aug 14, 2026, at 1:36 PM, Mikko Kouhia <[email protected]> wrote:
>>
>> On Thursday, 13 August 2026 21:17:32 Eastern European Summer Time Fr. Samuel Springuel wrote:
>>> The Gregorio project uses ImageMagik to visually compare
>>> scores as part of our test suite. [...]
>>>
>>> [...] If you’re interested though, I’ll post the series
>>> of ImageMagik commands that it takes to generate the
>>> attached [...]
>>
>> Hi, I'm interested to learn also this solution. When you
>> have time, please do post your script.

At 10:52 on 15 Aug 2026, Fr. Samuel Springuel wrote:
> So, the first step is to convert the pdf files to pngs.
> For that we use:

You may also be interested in diff-pdf, which I find useful, particularly at the later stages of proof-reading an engraving project when checking whether corrections have any unintended consequences.

https://vslavik.github.io/diff-pdf/

--
Mark Knoop
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