Best for
Spotting changes between short texts whose lines are already aligned.
Private browser tool
Text Diff Checker
Compare two texts line by line online free. See original and changed lines side by side in the input and inspect the diff without uploading text.
✓ Local processing✓ No uploads✓ No account
TEXT→DIFF
- 1Add input
- 2Choose options
- 3Get result
Next step
Continue working with your file
Simple by design
From file to result in three steps
- 1
Paste the original and changed text into their labelled fields.
- 2
Select Compare text.
- 3
Read the - and + lines in the result.
Practical guidance
When to use Compare text
What you get
A line-by-line comparison with - for original lines and + for changed lines; matching lines have no change marker.
Useful tip
This comparison uses line positions. An inserted line can make all following lines appear changed.
Read a simple line change
A minus line contains the original text and a plus line its replacement. For large documents with inserted or moved blocks, use a diff tool that aligns matching sections; this tool intentionally compares each line by position.
Original: Hello Ada
Changed: Hello Lin
Result
- Hello Ada
+ Hello LinGood to know
Frequently asked questions
Is this a word-level diff?+
No. It compares complete lines at the same position rather than highlighting individual changed words.
Are whitespace and capitalization ignored?+
No. Line comparisons are exact, so changes in spaces or letter case count as differences.
Does my file leave my device?+
No. This tool processes your file inside your browser and does not send its contents, name or metadata to Filemivo.
Is Compare text free?+
Yes. It is free to use and has no artificial file-size limit. Your browser and device memory determine the practical limit.