Free Online Text Comparison Tool
Compare two texts side by side with diff highlighting. No registration required.
Everything you need to know about using the Text Compare diff checker. This FAQ covers privacy, language support, power-user tips, and troubleshooting guidance for our online text comparison workspace.
Text Compare is an in-browser diff workspace that lets you paste or type two versions of text side by side and instantly highlight what changed. It powers the rest of the tool suite as the default landing experience.
Enter or paste your original text on the left, the updated text on the right, then press the Compare button (or use Cmd/Ctrl + Enter). The result view will show additions, removals, and replacements with line numbers for quick scanning.
No. Every comparison runs entirely inside your browser. We never upload, log, or persist the text you provide, so you can safely diff sensitive snippets.
Yes. In the editor view you can toggle options to ignore case and whitespace. Enable them before you compare to collapse those types of changes from the result.
The diff view works with any plain text. For code, you can pick from popular languages such as JavaScript, TypeScript, Python, Java, C#, Go, Rust, HTML, CSS, JSON, YAML, Markdown, and more to get syntax-aware highlights.
The tool is optimized for quick comparisons and can comfortably handle thousands of lines. Extremely large files may load slower, so we recommend trimming logs or splitting documents if you run into browser memory limits.
You can explore additional helpers like JSON formatter, regex tester, hash generator, and more from the tools hub.
Visit the Text Compare tools directory to browse the full catalog.
We are actively expanding the roadmap and will publish an in-app feedback form soon. Keep an eye on the updates banner in Text Compare for announcements.
Browse our diff workflows and utilities to keep comparing text faster.