diff
two texts, side by side. line by line.
your text never leaves
this tab
plain text
markdown
json
javascript
typescript
python
java
c#
go
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ruby
php
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shell
yaml
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html
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Ignore whitespace
Word wrap
Swap
Clear
Original
empty
Modified
empty
Your text stays here.
Everything stays local.
Your text, settings, theme, and scroll position live in this browser tab. Nothing else.
Nothing leaves your device.
No analytics, no logging of what you type, no telemetry, no third-party calls.
No outside dependencies.
The editor and fonts are bundled into this single HTML file. There are no CDN requests, no external resources, no tracker pixels.
Save it for offline use.
Press
⌘S
(or
Ctrl S
) and choose "Webpage, HTML Only". The saved file works fully offline, with the same editor and the same diff.
The server only sees that you visited.
Standard web access logs (your IP, the request path, the time) get kept on the server, like any website. Nothing about your text is ever sent.
Clear both panes?
This wipes the original and modified text from this tab. It can't be undone.