Text Compare

The Text Compare tool shows you exactly what changed between two pieces of text. Paste an original and a revised version, and it produces an instant line-by-line diff — removed lines in red, added lines in green, identical lines in plain text. Perfect for reviewing edits to documents, code, and lists. Free, private, and runs in your browser.

See What Changed, Instantly

Spotting differences between two versions by eye is slow and error-prone. This tool does it for you: it walks through both texts line by line, flags every difference, and color-codes the result so the changes jump out. Whether you're checking an edited article, a contract revision, or a tweaked config file, you'll see precisely what moved.

How to Use It

1. Paste the original text on the left.
2. Paste the changed version on the right.
3. Compare to see the highlighted diff.

Reading the Diff

A summary at the top tells you how many lines differ, so you know the scale of the changes at a glance.

Great for Text and Code

A line-by-line diff suits a wide range of work: comparing article drafts, reviewing code and config files, checking contract revisions, or spotting changes in any list. Developers, writers, and editors all rely on diffs to review edits quickly and confidently.

A Note on How It Compares

This tool compares line by line, the clearest and most common diff style. If a single word changes within a line, the whole line is marked as different — so you see the affected line and can read both versions to pinpoint the exact edit. It's designed for readability over micro-detail.

Private and Free

The comparison runs entirely in your browser, so neither text is ever uploaded — making it safe for sensitive or confidential documents. Compare as many pairs as you like, instantly, with no signup.

Text Compare FAQs

What does the text compare tool do?

It compares two pieces of text line by line and shows you exactly where they differ. Identical lines are shown plainly, removed lines are highlighted in red with a minus sign, and added lines in green with a plus sign. It's the quick way to spot what changed between two versions of any text.

How do I compare two texts?

Paste your original text in the left box and the changed version in the right box, then click Compare. The tool instantly produces a line-by-line diff, summarizing how many lines differ and color-coding the changes so you can read them at a glance.

What do the red and green lines mean?

Red lines (marked with a minus) are lines present in the original but changed or removed in the new text. Green lines (marked with a plus) are lines added or changed in the new version. Lines that are identical in both appear in plain text, so your eye is drawn straight to the differences.

Is this useful for code as well as text?

Yes. A line-by-line diff works well for code, configuration files, lists, articles, contracts, and any text where you need to see what changed between two versions. Developers, writers, and editors all use diff tools to review edits quickly and accurately.

Does it compare word by word or line by line?

This tool compares line by line, which is the most common and readable form of diff. If a single word changes within a line, the whole line is flagged as different, so you can see the line that changed and read both versions to spot the edit.

Will it work with large texts?

Yes, it handles sizable texts, comparing every line in both. Because the comparison runs in your browser, very large inputs depend on your device's memory, but for typical documents, articles, and code files it's fast and responsive.

Is my text kept private?

Yes. The comparison happens entirely in your browser — neither text is ever sent to a server. That makes it safe to compare sensitive or confidential documents, since the content never leaves your device.

Is the tool free?

Yes, it's free with no signup. Compare as many pairs of texts as you like, instantly and privately.