Text Diff Checker
Compare two text files and highlight the differences.
Runs in your browser — your data never leaves your device
Frequently Asked Questions
What is a text diff checker?
A text diff checker compares two pieces of text side-by-side and highlights the differences — additions, deletions, and modifications — making it easy to spot changes between versions.
How do I compare two texts?
Paste the original text on the left and the modified text on the right, then click compare. The tool highlights differences with color coding showing additions (green), deletions (red), and modifications.
Can I compare code files?
Yes, the tool works with any text content including code. It highlights line-by-line and character-level differences, making it useful for code reviews and debugging.
Is this tool free?
Yes, ToolDock's text diff checker is completely free, requires no signup, and runs entirely in your browser.