Can I compare JSON or configuration files?

Yes. Paste two JSON objects, YAML files, .env files, or any text-based config format. The diff will highlight every changed key, value, or line.

Online Code Diff Checker — Compare Code Snippets Free

Q: Can I compare source code with this diff checker?

Yes. The tool works with any plain text — Python, JavaScript, PHP, Go, SQL, JSON, YAML, XML, HTML, and any other language or format. It compares word by word so changes in variable names, values, and keywords are clearly highlighted.

Q: How is this different from git diff?

Git diff works on files in a repository and requires command-line access. This tool works directly in your browser — paste any two code snippets and get the diff instantly without a terminal, a repo, or any setup.

Why developers use this tool

When you need to compare two versions of a code snippet, a configuration file, or an API response, opening a full IDE or cloning a repo just to run git diff is overkill. This tool lets you paste both versions directly in the browser and see the differences in under a second.

The comparison uses the Longest Common Subsequence (LCS) algorithm — the same approach used by Git internally. This means you get a minimal, accurate diff: only words that actually changed are marked, without false positives caused by whitespace or formatting.

Common use cases for developers

→Compare API responses — paste two JSON payloads to find which fields changed between requests or API versions
→Review config changes — compare .env, YAML, TOML, or nginx.conf before deploying
→Check SQL migrations — confirm what changed between two schema versions
→Diff code snippets from Stack Overflow — quickly compare a suggested fix with your current code
→Compare log files — spot differences between two server log excerpts

Frequently asked questions

Can I compare source code with this diff checker?

Yes. The tool handles any plain text — Python, JavaScript, PHP, Go, SQL, JSON, YAML, XML, HTML, and more. Paste any two snippets and get the diff immediately.

How is this different from git diff?

Git diff requires a terminal, a repository, and committed files. This tool works in your browser — paste any two code snippets and get the result without a terminal or any setup. Ideal for quick comparisons outside of a git workflow.

Can I compare JSON or config files?

Yes. Paste two JSON objects, YAML files, .env files, or any text-based config. The diff will highlight every changed key, value, or line clearly.

Is my code stored on your servers?

No. The text you paste is processed in server memory and discarded immediately after the result is returned. Nothing is stored in a database or logged.