ToolsXpo

Code Diff Viewer

Compare two code blocks side-by-side and instantly highlight additions, deletions, and unchanged lines.

Configuration

Trim and normalize spaces

Case-insensitive comparison

This tool has an API.Automate it from your code — 1 credit/call.Open in Playground
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Compare Code Changes Instantly

Our Code Diff Viewer provides a simple way to compare two versions of code and see exactly what changed. Perfect for code reviews, debugging, and tracking modifications across file versions — all processed in your browser.

About Code Diff Viewer

Compare two code blocks side-by-side and instantly highlight additions, deletions, and unchanged lines. It's built for string manipulation and text-processing tasks, runs instantly, and works on any device — no install, no sign-up.

How to use Code Diff Viewer

  1. Paste or type your input into the editor on the left.
  2. Leave the defaults, or tweak them if the tool exposes options.
  3. The result appears instantly on the right — everything runs in your browser, so nothing is uploaded.
  4. Copy the output, or download it, and you're done.

Why use Code Diff Viewer?

  • Fast and local — the transform happens in your browser, so there's no round-trip and no waiting.
  • Private by default — your input never leaves your device.
  • Accurate — the same, well-tested logic powers both this page and the public API.
  • Free — unlimited use in the browser, with an optional API for automation.

Use it from the API

Everything this page does is also available as a REST endpoint, so you can call Code Diff Viewer from your own code, a script or a CI pipeline.

Bash
curl "https://api.toolsxpo.com/v1/code-diff-viewer" \
  -H "Authorization: Bearer txp_live_YOUR_KEY"

The endpoint returns a JSON envelope ({ ok, data, meta }) and costs 1 credit per successful call. Try it in the playground or browse the full API reference.

Frequently asked questions

Is Code Diff Viewer free to use? Yes — use it in the browser as much as you like. The optional API has a free tier and pay-as-you-go pricing for heavy or automated use.

Is my data private? Yes. Code Diff Viewer runs entirely in your browser — your input never leaves your device and nothing is logged or stored.

Can I automate Code Diff Viewer? Yes — call the code-diff-viewer API endpoint from any language and script it into your workflow.

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