Free, browser-based utilities for everyday developer workflows

Diff Two Text Files

Compare two text files and highlight line-by-line differences.

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Open Text Diff with a ready-to-run example.

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When you need this
  • You want to compare config files or release notes.
  • You need a quick diff without using git tools.
  • You are reviewing changes before sharing them.
How to do it with Daily Developer Tools
  • Paste the original text on the left and the updated text on the right.
  • Click Compare text to see line-by-line changes.
  • Copy the unified diff output if needed.
Tips / common pitfalls
  • Enable word diff to highlight small edits.
  • Turn on ignore whitespace for formatting-only changes.
  • Use the Copy Added/Removed buttons to extract changes.
Examples & test data

Config updates

Open tool with this example
Input example (List 1)
ENV=prod
TIMEOUT=30
RETRY=2
Input example (List 2)
ENV=prod
TIMEOUT=45
RETRY=3
Expected output
- TIMEOUT=30
+ TIMEOUT=45
- RETRY=2
+ RETRY=3

Version bump

Open tool with this example
Input example (List 1)
version=1.4.2
name=daily-tools
Input example (List 2)
version=1.5.0
name=daily-tools
Expected output
- version=1.4.2
+ version=1.5.0
FAQ
Does it support large files?

Yes, but very large files may take longer to compare in the browser.

Can I ignore whitespace differences?

Yes. Toggle the Ignore whitespace option.

Is the diff saved anywhere?

No. Everything stays in your browser session.

Can I copy a unified diff?

Yes. Use the Copy Unified Diff button.

Related tools
JSON Diff List Comparator Regex Tester Line Tools

i Privacy-first: everything runs locally in your browser. No uploads, no tracking of your inputs.