Diffchecker

@diffcheckerapp yep TIL that text mode supports drag-and-drop for files!

@branmcconnell Hey Brandon. You can upload .md and .mdx files to our text comparison feature. Were you trying to upload it to our document comparison feature?

@diffcheckerapp can you please add .md and .mdx to your supported filetypes?

Websites That Instantly Improve Your Code ⚡ Regex101 – debug regex visually ⚡ JSON Formatter – format JSON instantly ⚡ JSON Crack – visualize JSON data ⚡ Bundlephobia – check package size ⚡ Can I Use – browser support ⚡ Diffchecker – compare code changes ⚡ JSFiddle – test JS quickly ⚡ StackBlitz – run projects instantly

Seeing what changed in file with Cursor is terrible. Each time I am being have to use a file comparison tool to see what actually changed. E.g. like diffchecker website

@RLanceMartin Love it! Claude volunteered a META-EVAL of a skill that I wrote today. It listed 3 areas that could be improved. I told it to rewrite it addressing those needs. See v1 vs v2 here: diffchecker.com/4GwkwrmE/

Jan 2026 FOMC statement: federalreserve.gov/newsevents/pre… Dec 2025 FOMC statement: federalreserve.gov/newsevents/pre… Comparison of the 2 statements: diffchecker.com/IN3ylOLq/

There's nothing worse than having 2 (or more) drafts of a book and you have NO idea why there are 2 (or more) drafts. They look different. The question is; how different are they? Guess I'll have to use diffchecker.com/word-pdf-compa…

@ryoppippi @sanxiaozhizi @boshen_c @rolldown_rs @OxcProject Here is the diff for mcp.js, the file with the biggest diff in size. diffchecker.com/8fYjQVQ6/

Thanks for your feedback Charles! Yes, if a piece of text has moved far enough, it will, depending on the length of the text, either be detected as a removal+addition or as a "move". Our algorithm errs on the side of showing any potential changes as we never want to miss a change. Our Redline output uses a different algorithm, which means they'll often give slightly different results, but it's odd that it consistently gives seemingly better results. If your documents aren't confidential, we'd love to diagnose them with you if you email them to us at admin@diffchecker.com.

@diffcheckerapp I keep getting false additions under rich text. Not many but enough that mgmt may not trust results. Are you aware of an issue ? It seems when an item is perhaps moved far enough that the AI seems it new? Redline doesn't have the false additions.

when your main and test repos are way different and you cant simply merge changes...😭Diffchecker is a saviour..before replacing some code, i always double check the changes

Our enhanced #AI Explain feature can now generate a summary of your entire text diffs, not just line-by-line changes. It’s like having a personal assistant read through your diffs to tell you what matters most in seconds!

We recently added two highly requested features to Diffchecker 🙌. Now you can compare password-protected spreadsheets and check for diffs in Excel formulas—not just the final values. diffchecker.com/excel-compare/

Full differences between the March 19th and May 7th FOMC statements can be seen here: diffchecker.com/R3LY2SmU/

268/999: If Git Fails, Use DiffChecker! After a long time, we finally had a production release at the office! Around 15,000 lines of code were deployed across multiple environments of the project repos (one of the largest I’ve faced!). When moving to prod, there was a lot of testing in dev, UAT, and pre-prod—and everything was working fine. But some features we didn’t want to push live, so we were cherry-picking commits, creating a branch, and merging to prod! Then the code was deployed to prod, and everything seemed to be working as expected—until suddenly, one feature failed! We all got worried because it was an invisible bug. In live, it was broken, but in all other environments, it was working—making it super hard to reproduce and fix. Then, I used my debugger’s eye (Sharingan 👀) and narrowed it down to one repo and one specific file. After running the prod code locally, the issue reproduced. Then I switched the branch to pre-prod—and boom, the issue was gone. So I was 100% sure I had missed one commit during cherry-picking! I compared the pre-prod and prod versions of the file—line by line—Git said everything was synced! Finally, I went old-school: copied the prod and UAT code, pasted them into a diff checker website, and ran a comparison. Guess what? I had just missed a setState variable—a single line of code! Out of thousands of lines, one missing line caused the entire feature to fail! Sometimes, it’s worth taking a moment to appreciate how smart we developers are. If you asked a non-tech person to find one missing line among thousands, they’d freak out! Also, devs—sometimes we don’t need the latest tech. The old-school or simplest jugaad always works. WAGMI 💜

Attention legal professionals 🚨 We know how crucial it is to manage document edits and track revisions accurately. That’s why we’re excited to introduce new Redline functionality in Diffchecker for Windows - now you can review, accept, or reject Redlines with ease. diffchecker.com/diffchecker-le…

I used Diffchecker to compare the last snapshot of the Legal Terms in Waybackmachine before the change (dated Feb 26, 2025), which were valid since Jan 29, 2024, and the new Legal Terms since Feb 28, 2025 English version: diffchecker.com/oXrh3esW/ German version: diffchecker.com/6ygJY2Hm/ ----------- For everyone who missed it: The day after tomorrow, on March 28, the changes to the ROCKSTAR LEGAL TERMS (rockstargames.com/legal), which were amended and announced on February 28, 2025 (support.rockstargames.com/articles/38883…), will come into effect. A LOT has been changed, especially the changes to the user rules in section 6 should be carefully read. #GTAOnline @RockstarGames

🚀 Exciting updates from Diffchecker! Now you can quickly access your recent diffs and files with the new 'Recent' feature. No more searching for past files or previous diffs—everything you need is right at your fingertips. Update to the latest version today! diffchecker.com/download-trial/

Quick tip when coding with AI... If you are replacing a whole function or a large chunk of code with AI, it wouldn't hurt pasting both old and new, on a site like Diffchecker to see what's really being changed. It could save you some serious debugging.

We’ve added new ways to fine-tune your Excel diffs! Now you can hide unchanged rows, ignore case changes, or disregard white spaces so you can keep your focus on the rows that matter the most to you. Try it now: diffchecker.com/excel-compare/

Diffchecker's Desktop Redline feature now has customizable settings and a toolbar that lets you control which differences you want to see. You can choose to view all changes, or exclude differences in areas like headers, footers, or case changes. diffchecker.com/desktop/