# OmniDiff

8 Hacker News commenters recommended OmniDiff and 3 criticized it, November 2025 to November 2026. It was recommended in 1 of 13 months.

**Verdict:** People recommend it as a fast, content-aware Git diff tool that highlights only changed characters and produces minimal diffs. Critics mainly object to its AGPL-plus-donation license model.

## Why people recommend it

- Minimal, character-level diffs (2 comments): "OmniDiff is character based by default. It will only highlight the changed characters." ([source](https://news.ycombinator.com/item?id=50328145)) "It produces much more minimal diffs than other tools I've tried." ([source](https://news.ycombinator.com/item?id=50327910))
- Accurate on most diffs (2 comments): "Omnidiff is perfect on 90% of diffs and near-perfect on 5% more." ([source](https://news.ycombinator.com/item?id=50326933)) "But they do perform worse on speed and accuracy." ([source](https://news.ycombinator.com/item?id=50326680))
- Seen as well-made and useful (2 comments): "This looks really good. It does look like you put a ton of effort into it, I'll give it a try." ([source](https://news.ycombinator.com/item?id=50329954)) "Wow, I've often wished I had a tool like this." ([source](https://news.ycombinator.com/item?id=50328455))

## What people warn about

- AGPL plus donation license model (1 comments): "You have a good core idea here. You're pretty much killing your project in infancy with the AGPL+donation license model." ([source](https://news.ycombinator.com/item?id=50326498))
- Unexpected single-column diff output (2 comments): "I got a weird single-column diff output that only showed the new side of the changes, not a diff." ([source](https://news.ycombinator.com/item?id=50331105)) "I am not sure I prefer the output of omnidiff" ([source](https://news.ycombinator.com/item?id=50329636))

## Alternatives hackers recommend

- [difftastic](https://hackerapproved.com/p/difftastic.md): 23 recommend
- [Weave merge tool](https://hackerapproved.com/p/weave.md): 20 recommend
- [Mergiraf](https://hackerapproved.com/p/mergiraf.md): 19 recommend
- [sem](https://hackerapproved.com/p/sem.md): 19 recommend
- [Meld](https://hackerapproved.com/p/meld.md): 12 recommend

## Cite as

Hacker Approved, "OmniDiff", https://hackerapproved.com/p/omnidiff/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).