DiffResolver — Free Diff and Merge Tools in Your Browser

Compare two pieces of text and see every change highlighted by character, word, or line.

Combine two versions of a text into one, choosing the wording you want hunk by hunk.

Resolve conflicting edits using their common ancestor, like a git merge, right in your browser.

Pixel-perfect PNG comparison with alpha support and grouped difference regions.

Compare JPEG photos pixel by pixel, with tolerance that absorbs compression noise.

Pixel-level WebP comparison that handles lossy and lossless files, alpha included.

Combine two PNGs with a paintable mask and download a lossless result.

Combine two JPG photos with a paintable mask and download a clean JPEG.

Combine two WebP images with a paintable mask; export as WebP, PNG, or JPG.

Compare SVGs as rendered images or as markup, whichever tells the story.

Compare JSON by meaning, not formatting. Key order and whitespace never count as changes.

Merge two JSON documents property by property, choosing which side wins.

Three-way JSON merge with property-level conflict detection. Independent changes merge automatically.

Compare CSV files row by row, with key-column matching that survives reordering.

Merge two CSV files row by row, keeping the version you choose for each difference.

Three-way CSV merge keyed by row. Independent cell edits combine automatically; only real conflicts need your call.

Compare tab-separated data row by row. Paste straight from a spreadsheet.

Merge tab-separated data row by row, straight from your spreadsheet.

Compare YAML by structure and values. Indentation, quoting, and key order never get in the way.

Merge two YAML files key by key, choosing which side wins.

Compare TOML files by their tables and values, not their formatting.

Merge two TOML files section by section, choosing which side wins.

Compare XML documents by structure: elements, attributes, and text.

Compare HTML by DOM structure or rendered preview, side by side.

Compare Markdown by structure, rendered output, or raw source.

See what changed between two ZIP archives: files added, removed, or modified.

See what changed between two TAR archives, including .tar.gz and .tgz.

See what changed between two 7z archives, decompressed right in your browser.

See what changed between two RAR archives, decompressed right in your browser.

Compare two local folders file by file, with reliable content checks and inline text diffs.

Compare PDFs page by page and see every visual change highlighted.

Compare Word documents as rendered pages or extracted text, no Office needed.

Compare Excel workbooks sheet by sheet and cell by cell.

Compare PowerPoint decks slide by slide, visually or by text.

Compare the text of OpenDocument Text files, no office suite needed.

Compare EPUB ebooks chapter by chapter, visually or by text.

Compare the text of two RTF documents, free of formatting noise.

Compare any two files byte by byte in a classic hex view.

Add two files and let DiffResolver open the tool that fits them.