What diff algorithm does this use?

The tool uses the Myers diff algorithm, the same algorithm used by Git. It produces minimal, optimal diffs that clearly show the smallest set of changes.

Can I compare code with syntax highlighting?

Yes. The tool supports syntax highlighting for common languages like JavaScript, Python, SQL and YAML, making code diffs easier to read.

Compare Text in Your Browser

Quickly spot differences between two versions of a file without installing diff tools or pushing to a repository. This browser-based diff checker highlights changes instantly and keeps your data completely local.

Open Diff Checker

Steps to Compare Text

Paste the original text in the left panel
Paste the modified text in the right panel
Differences are highlighted immediately in red and green
Toggle between side-by-side and unified diff views

Common Use Cases

Comparing SQL schema migrations before and after changes
Checking Terraform plan output against current state
Reviewing translated document versions
Spotting accidental changes in configuration files

Frequently Asked Questions

What diff algorithm does this use?: The tool uses the Myers diff algorithm, the same algorithm used by Git. It produces minimal, optimal diffs that clearly show the smallest set of changes.
Can I compare code with syntax highlighting?: Yes. The tool supports syntax highlighting for common languages like JavaScript, Python, SQL and YAML, making code diffs easier to read.