Text Diff — Free
Paste two texts and compare them line by line. Added lines are highlighted in green, removed lines in red.
Line-by-line diff
Uses LCS algorithm to find the minimal set of changes between two texts.
Color coded
Green for added lines, red for removed, white for unchanged. Easy to scan at a glance.
Fully private
The diff runs entirely in your browser. Your text never reaches any server.
What is a text diff checker?
A text diff checker compares two blocks of text and highlights exactly what changed between them — lines added, lines removed, and lines that stayed the same — instead of making you scan both versions manually to spot differences. Pixvert's text diff tool performs this comparison line by line, color-coding additions and deletions clearly.
Spotting the difference between two similar paragraphs, contracts, code snippets, or configuration files by eye is slow and error-prone, especially when the changes are small but important — a single word, a changed number, a missing line. A diff tool makes every change immediately visible.
This tool is useful anywhere two versions of text need to be compared: reviewing an edited document against its original, checking what changed between two drafts of an article, or comparing two versions of a config file or code snippet without needing a full version control setup.
How to compare two texts
- 1
Paste the original text — enter the first version in the left panel
- 2
Paste the modified text — enter the second version in the right panel
- 3
Review the highlighted diff — added and removed lines are color-coded automatically
- 4
Scan for the specific changes — quickly identify exactly what was added, removed, or kept the same
When to use a text diff checker
Reviewing document edits
Compare an edited contract, article, or report against its original version to see exactly what changed.
Comparing code or config snippets
Spot differences between two versions of a script or configuration file without a full Git setup.
Checking translation or localization changes
Compare two versions of translated text to verify what content was updated.
Auditing copy changes
Verify that only the intended changes were made to a piece of marketing or legal copy.
Why use Pixvert's text diff checker?
- ✓Clear, color-coded diff: added and removed lines are immediately visible
- ✓100% local and private: both texts are compared entirely in your browser
- ✓No signup, no limits: compare as much text as you need
- ✓Works with any plain text: documents, code, config files, or any text content
Frequently Asked Questions
Is my text sent to a server?
No, the comparison happens entirely in your browser using JavaScript. Neither text is transmitted or stored.
Does the tool compare word by word or line by line?
The comparison is line-by-line, showing which lines were added, removed, or unchanged between the two versions.
Can I compare code with this tool?
Yes, it works with any plain text, including code, configuration files, and structured data, though it doesn't apply language-specific syntax highlighting.
Does capitalization or whitespace affect the diff?
Yes, the comparison is exact by default, so differences in capitalization, spacing, or line endings will be flagged as changes.
Is there a text length limit?
No hard limit is enforced, though very large documents may take a moment to process depending on your device.
Can I use this to compare two files instead of pasted text?
Currently the tool works with pasted text — open your files in a text editor, copy the contents, and paste them into each panel.