Compare two release note drafts
A quick local diff helps review small text changes without uploading private notes.
Input
Left: Format JSON locally
Right: Format JSON without uploadingOutput
Changed line highlighted in the diffText toolsRuns locally
Local Text Diff
Compare two blocks of text line by line in your browser to spot documentation, config, or copy changes.
diffcomparetextlines
Privacy note: this tool runs in your browser; inputs are not uploaded. How privacy works
Compare text
Line diff
Line differences will appear here.
Text Diff examples
Text Diff use cases
- Compare configuration snippets.
- Review edits to docs, emails, or release notes.
- Spot accidental line changes in copied text.
How Text Diff works
- Both text blocks are split into lines.
- Lines are compared in the browser.
- Differences are displayed without sending either side to a server.
Text Diff mistakes to avoid
- Whitespace-only changes can still be meaningful.
- Line-based diffs are less useful for heavily wrapped prose.
- A visual diff does not validate syntax.
Text Diff privacy and processing
No uploadBrowser-localNo accountThis tool runs in your browser. Inputs are processed on your device and are not uploaded to LocalTools.
How LocalTools handles local and server-assisted toolsText Diff related workflows
How LocalTools handles local and server-assisted tools
Understand which tools stay in the browser and which public URL checks need an API request.
Local-First Developer Tools for Sensitive Data
A practical hub for choosing browser-local tools when working with JSON, JWTs, PDFs, images, hashes, and other data you hesitate to paste online.
Text Diff FAQ
Is either side of the diff uploaded?
No. The comparison runs locally in your browser.
Can this diff files?
This tool compares pasted text blocks, not uploaded files.