Text Compare
All text comparison runs locally in your browser. No input is uploaded to a server.
Original Text
Changed Text
Text Comparison Result
Differences will appear here after you compare the two texts.
About Text Compare
Text Compare is a free online Text Compare tool for checking two versions of text side by side. You can use Text Compare to compare text online for drafts, code snippets, logs, documentation, release notes, and copied content without installing desktop software.
This Text Compare page protects privacy by processing your content locally in the browser. Your text stays on your device, your Text Compare result is generated on your device, and the compare workflow does not upload your files or pasted text to a server during normal use.
A good Text Compare workflow needs to be fast, readable, and practical. This online Text Compare view highlights same, changed, added, and removed lines so you can review revisions quickly and understand exactly where two text versions begin to differ.
How Text Compare Works
The basic Text Compare logic starts by normalizing line breaks so both inputs follow the same newline format before comparison. That keeps a Text Compare result focused on real text changes instead of operating-system-specific line ending noise.
After normalization, the Text Compare engine performs a line-by-line diff. Matching lines are marked as same, missing lines are marked as removed or added, and paired removed and added lines are shown as changed when they represent an edited row in the Text Compare result.
Line numbers are preserved on both sides to make Text Compare easier to review. That means you can see where the original text and changed text diverge, which is especially useful for debugging, proofreading, and technical review work.
How to Use Text Compare
Paste text into the left and right editors, or use Open file on each side to upload complete files for Text Compare. The current Text Compare editor supports common plain-text formats such as TXT, MD, CSV, and LOG.
Each editor shows its current line count at the top, so Text Compare gives you an immediate view of input size before you run the comparison. After comparing, each output pane also shows line totals for the rendered Text Compare result.
Click Compare Text to generate the Text Compare result, then review the highlighted rows for same, changed, added, and removed content. Use Clear All whenever you want to reset both inputs and start a new Text Compare session.
FAQ
What does Text Compare do?
Text Compare checks two text inputs side by side and highlights which lines are the same, changed, added, or removed. It is useful when you need a fast online Text Compare result for editing, debugging, or review.
Is this Text Compare tool free and online?
Yes. This is a free online Text Compare tool that runs directly in the browser, so you can compare text online without creating an account or installing extra software.
Does Text Compare upload my files or pasted text?
No. This Text Compare workflow uses local browser processing during normal use. Your files and pasted text remain on your device instead of being uploaded to a remote comparison server.
Can I upload full files instead of pasting text?
Yes. Text Compare supports whole-file input with the Open file button on both sides. You can upload complete TXT, MD, CSV, or LOG style files and review the Text Compare result with line numbers.
How are changed lines detected in Text Compare?
Text Compare first normalizes line breaks and then performs a line-based diff. When a removed line and an added line line up as an edit, the Text Compare result marks them as changed instead of showing them as unrelated differences.
Why does Text Compare show line counts and line numbers?
Line counts help you confirm the size of each input before running Text Compare, while line numbers help you locate exact edits in the result. That makes Text Compare easier to use for logs, code, notes, and long documents.
Can I use Text Compare for code or log files?
Yes. Text Compare works well for code snippets, config files, logs, markdown documents, release notes, and other line-based content where a clear online Text Compare view is more useful than a plain copy-and-paste review.