# Diffchecker

5 Hacker News commenters recommended Diffchecker and 0 criticized it, November 2025 to November 2026. It was recommended in 4 of 13 months.

**Verdict:** People recommend it for private, browser-based comparison of text and files, with merge support and real-time diffing. The most common caveat is file-size limits.

## Why people recommend it

- Private, input not persisted (2 comments): "Client-side diffing is great for privacy, but it might help to call out the file-size limits" ([source](https://news.ycombinator.com/item?id=46540485)) "The input will not be persisted so no way the data is accessible other that the user." ([source](https://news.ycombinator.com/item?id=46050194))
- Real-time diff mode (1 comments): "it had a switch "Real-time diff" which did exactly what I wanted" ([source](https://news.ycombinator.com/item?id=46267780))
- Called the best online tool (1 comments): "the best tool I found online" ([source](https://news.ycombinator.com/item?id=46268696))

## What people warn about

- File-size limits may apply (1 comments): "Client-side diffing is great for privacy, but it might help to call out the file-size limits" ([source](https://news.ycombinator.com/item?id=46540485))

## 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

## Where to get it

- [Visit the official site](https://www.diffchecker.com/)

## Cite as

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