Text Compare
Compare two blocks of text and highlight exactly what was added, removed, or changed between them.
Frequently Asked Questions
How does the text comparison work?
The tool finds the longest sequence of text the two versions share, then marks everything else as either added (in the changed text) or removed (from the original) and highlights it.
Is my text uploaded anywhere?
No. The comparison happens entirely in your browser — neither piece of text is sent to or stored on any server, so it is safe for private or confidential content.
What is the difference between word, line, and character comparison?
Word comparison highlights individual changed words and is best for prose. Line comparison flags whole lines that differ and suits code or lists. Character comparison is the most precise, catching single-character edits like typos.
Can I compare code or config files?
Yes. Paste both versions and use the "Line" comparison to see exactly which lines were added or removed — useful for diffing config files, JSON, or code snippets.
Why does it say the texts are too long?
Very large texts compared character by character can be slow to highlight, so the tool asks you to switch to "Line" comparison or compare smaller sections instead.
Text Compare — Spot the Difference Between Two Versions Instantly
Comparing two versions of the same text by eye is slow and error-prone — a single changed word, a deleted line, or a moved sentence is easy to miss when you are reading two blocks side by side. This Text Compare tool does it for you: paste in an original and a changed version, and it highlights every difference, showing exactly what was added and what was removed.
It is built for the everyday "what changed?" question. Writers use it to see edits between two drafts, developers to compare config files or code snippets, students and editors to check revisions, and anyone who has ever been sent a "lightly updated" document and wanted to know what "lightly" actually meant. Added text is highlighted in green and removed text in red, with a running count of additions and deletions so you can gauge the scale of the change at a glance.
You can compare at three levels of detail. Word comparison is the default and best for prose — it pinpoints the exact words that changed. Line comparison is ideal for code, lists, and structured text where you care about which lines differ. Character comparison is the most granular, catching tiny edits like a single typo fix or a changed digit.
Like every tool on QTNest, the comparison runs entirely in your browser. Neither piece of text is uploaded to a server, which means you can safely compare drafts of confidential documents, private code, or anything else without it leaving your device.
How to Use the Text Compare
- Paste the first version into the "Original text" box.
- Paste the second version into the "Changed text" box.
- Choose whether to compare by word, line, or character.
- Read the result: green is added text, red (struck through) is removed text.
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