Diff Checker
Compare two texts and highlight differences line by line
Overview
Place two texts side by side and see line-by-line differences highlighted. Useful for comparing config file changes, code reviews, or verifying document edits. Added lines show in green, removed lines in red, making changes easy to spot at a glance.
Key Features
- Line-by-line diff highlighting (added / removed / changed)
- Side-by-side layout
- Quick navigation to changed sections
- Option to ignore blank lines and whitespace
- Paste directly from clipboard
How to Use
- Paste the original text on the left and the modified text on the right.
- Click Compare to highlight differences with color.
- Use the navigation controls to jump between changes.
- Toggle the whitespace ignore option if needed.
Tips
- Especially useful for reviewing config file changes (YAML, JSON, etc.).
- Enable 'ignore whitespace' to focus on substantive changes when only spaces or tabs differ.
- Paste Git diff output here for a more readable visual comparison.
FAQ
- How long can the compared texts be?
- Texts can be compared up to the browser's memory limit. A few thousand lines work fine, but tens of thousands of lines may slow things down.
- Can I upload files to compare?
- Currently only paste is supported. Copy the file contents and paste them into the text areas.
- Can I compare binary files?
- No, this tool only supports text-based comparison. Use a dedicated diff tool for binary files.