Is the PlainBench text compare & diff tool free?

Yes. The PlainBench Side-by-Side Text Compare & Diff tool is 100% free to use with no sign-ups, subscriptions, or hidden limits.

Do you upload or store the text I paste into the diff tool?

No. The diff engine runs entirely in your browser using JavaScript. Your text is not uploaded to a server or stored by PlainBench.

What is this text diff tool good for?

This tool is ideal for writers, developers, editors, and SEO professionals who want to compare two versions of text and see exactly what changed without dealing with ads, logins, or complicated software.

Does this tool work like Git diff?

It uses a simpler, more visual approach. The PlainBench diff tool highlights added text in green, removed text in red, and leaves unchanged text plain, which is easier to scan quickly in a browser.

Does the tool support both word-based and line-based comparisons?

Yes. You can choose between word-based mode for paragraphs and emails, and line-based mode for code snippets, bullet lists, or structured text.

Side-by-Side Text Compare & Diff – Free Online Tool (No Login)

Paste two versions of your text and instantly see a side-by-side diff. Additions are highlighted in green, deletions in red, so you can quickly spot changes before publishing or sending.

Compare two texts in 3 steps

Paste your original text on the left and your edited text on the right, choose a diff mode, then click Compare. Everything runs in your browser – no uploads, no accounts.

1. Paste the two versions of your text

Perfect for blog posts, email drafts, contracts, copy edits, and code snippets.

Original text

Chars: 0 Words: 0 Lines: 0

New/edited text

Chars: 0 Words: 0 Lines: 0

2. Choose diff mode and compare

Use word-based diff for prose and emails, or line-based diff for code, lists, and structured text.

Compare mode

Paste your original and edited text, choose a compare mode, and click Compare. If both sides are identical, we’ll tell you so.

3. Review the highlighted differences

On the left you’ll see the original text with removed content highlighted. On the right you’ll see the new text with added content highlighted.

Original (left)

New / edited (right)

No comparison yet. Once you run a diff, you’ll see counts of added and removed segments here.

Why use a plain, side-by-side text diff tool?

Many online compare tools are noisy, full of ads, or locked behind accounts. The PlainBench Side-by-Side Text Compare & Diff is built to be fast, clean, and private.

• Editors & writers: compare drafts and see exactly what changed.
• Developers: diff config files, code snippets, or JSON without opening a full IDE.
• SEO & marketing: compare copy tweaks before/after testing.

Does this tool upload my text?

No. All comparisons happen locally in your browser via JavaScript. This makes it safe for sensitive copy and internal documents.

What’s the difference between word-based and line-based diff?

Word-based diff splits the text into words and highlights individual word changes – perfect for paragraphs and emails. Line-based diff compares whole lines, which is often better for code, bullet lists, and configuration files.

How are additions and deletions highlighted?

In the original panel, removed text is shown in red with a strikethrough. In the new panel, added text is shown in green. Shared text stays normal.

Is this as powerful as Git diff?

The PlainBench diff is intentionally simpler and more visual. If you need advanced features like 3-way merges or patch files, Git is better. For quick “what changed?” checks in the browser, this is faster and friendlier.

Can I use this on my phone?

Yes. The layout is mobile-friendly. On small screens, the inputs and diff panels stack vertically so you can scroll through the comparison easily.

Pair with other PlainBench writing tools:

Clean up your text using the Text Cleaner & Formatter, check Readability & Grade Level, then use this diff tool to compare your final drafts before publishing.