Text diff
Line-by-line diff with optional JSON / XML normalisation and key sorting.
Also known as: Diff checker, Compare text.
100% offline · macOS, Windows & Linux · free for personal use

// overview
What it does
Text diff is one of 55 tools in Hexkit, a desktop developer toolbox that runs entirely on your own machine. Line-by-line diff with optional JSON / XML normalisation and key sorting.
Because Hexkit is a native app rather than a web page, anything you paste into the text diff stays local — there are no uploads, no accounts and no telemetry. You can clean up and reformat text even with the network turned off, which makes it safe for tokens, keys and production data.
// steps
How to use Text diff
- 1
Open Hexkit and select "Text diff", or press the command-palette key and start typing its name.
- 2
Paste the text you want to clean up. Line-by-line diff with optional JSON / XML normalisation and key sorting.
- 3
Read or copy the result. Everything is computed locally by Hexkit's Rust core, so nothing is ever uploaded.
Tip: the command palette opens any tool in one keystroke.
// faq
Frequently asked questions
- Is Text diff free?
- Yes. Text diff is part of Hexkit, which is free for personal and non-commercial use on macOS, Windows and Linux.
- Does Text diff work offline?
- Completely. Hexkit runs every tool locally with no network access, so Text diff works on a plane or an air-gapped machine.
- Is my data uploaded anywhere?
- No. Hexkit makes no network calls and has no telemetry — whatever you paste stays on your computer.
// keep going
Related tools
Use Text diff without sending your data anywhere.
Text diff ships inside Hexkit — a free, offline developer toolbox for macOS, Windows and Linux. No account, no uploads.