Compare text and code side by side with syntax highlighting and line-by-line change detection. See exactly what changed between two files or versions — additions, deletions, and modifications are clearly highlighted. Free, fast, and private — your data never leaves your browser.
Open Diff ViewerCompare two files or text blocks side by side with synchronized scrolling. Additions are highlighted in green, deletions in red, and modifications in yellow for instant visual understanding of changes.
Diff with syntax highlighting for 30+ programming languages including JavaScript, Python, TypeScript, Go, Rust, Java, C++, and more. See code changes with full language awareness.
Compare JSON, XML, YAML, and TOML files with format-aware diffing. Format your structured data first for cleaner, more meaningful diffs that show semantic changes rather than whitespace differences.
See exactly which characters changed within modified lines. Character-level diff highlighting makes it easy to spot small changes in long lines of code or data.
Open files in tabs, then select any two tabs to compare. Switch between editing and diffing seamlessly. Great for reviewing configuration changes, API responses, or code refactors.
Compare large files with WebAssembly-powered performance. Handle log files, database exports, and large codebases without your browser slowing down.
Open Tidy Code, open both files in separate tabs, then use the Diff Viewer to compare them side by side. Differences are highlighted with color coding — green for additions, red for deletions, and yellow for modifications.
Yes. Tidy Code's diff viewer provides syntax highlighting for 30+ programming languages including JavaScript, Python, TypeScript, Go, Rust, and more. It also highlights JSON, XML, YAML, and TOML diffs with proper formatting.
Yes. Tidy Code is ideal for comparing JSON, XML, YAML, and TOML files. Format your files first for cleaner diffs, then use the Diff Viewer to see exactly what changed between versions.
Yes, Tidy Code's diff viewer is completely free with no signup required. Your data stays in your browser and is never sent to any server.