Is my text uploaded to the server?

No. All diffing is done client-side in your browser.

Which file formats are supported?

Plain-text files and source code files (.txt, .js, .py, .html) - any text file.

How do I share the comparison?

Click Share to generate a URL that encodes both inputs so others can reproduce results.

How does the Text Compare & Diff Checker work?

It compares two texts side-by-side or in a unified view, highlighting additions, deletions, and unchanged content at line, word, or character level.

Can I ignore whitespace and case differences?

Yes. You can enable options to ignore whitespace or make the comparison case-insensitive.

Can I compare uploaded files?

Absolutely. You can upload text files and compare their content directly in the tool.

Is the comparison private and secure?

Yes. All processing happens locally in your browser. No data is uploaded to any server.

Can I export or share the comparison results?

Yes. You can copy or download the unified diff report and also generate a shareable URL with encoded inputs.

Text Compare & Diff Checker - Side-by-Side, Word/Line

Online Text Compare & Diff Checker

Instantly compare two texts with our powerful Text Compare and Diff Checker. Detect differences at line, word, or character level, ignore whitespace, upload files, and export a unified diff — all directly in your browser. Perfect for developers, writers, editors, and students.

Left text

Right text

Result

Left

Right

Snapshots

No snapshots yet.

Why Use This Diff Checker?

Side-by-Side Comparison

View two texts next to each other with clear highlighting for added, removed, and unchanged content.

Multiple Diff Modes

Switch between line diff, word diff, or character diff to analyze changes with precision.

Privacy First

Everything runs client-side. Your text is never uploaded or stored on any server.

Ignore Whitespace & Case

Filter out formatting or capitalization differences to focus on real content changes.

File Upload Support

Upload text or code files and instantly compare them without installing any software.

Export & Share Results

Download unified diff reports or generate a shareable link to collaborate easily.

Common Use Cases

✔ Compare two versions of source code
✔ Detect edits in legal or academic documents
✔ Review content updates before publishing
✔ Find formatting changes between drafts
✔ Compare configuration or JSON files
✔ Analyze text differences for proofreading

Diff Modes Comparison

Mode	Best For	Detail Level
Line Diff	Code files, logs, structured text	Medium
Word Diff	Articles, documents, essays	High
Character Diff	Precise text edits, typos	Very High

Text Compare & Diff Checker FAQs

Is my text uploaded anywhere?

No. All comparisons are performed locally in your browser. Nothing is stored or transmitted.

Can I compare source code?

Yes. The tool works perfectly for code files such as JavaScript, Python, HTML, JSON, and more.

What does ignoring whitespace do?

It removes differences caused by spaces, tabs, or line breaks so you can focus on meaningful changes.

Can I share the diff results?

Yes. You can generate a shareable link that encodes both texts so others can see the same comparison.

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