DocxLens

What DocxLens is

DocxLens compares documents in synchronized, side-by-side columns, with scroll lock to keep the two views aligned. It handles PDFs, Word files, Excel files, CSV, JSON, plain text, Markdown, and more than 15 code file types. For scanned or image-based PDFs without a text layer, Tesseract OCR extracts text. Excel and CSV comparisons cover sheets, cell values, formula results, and data columns; code and JSON comparisons use syntax-aware line differences with word-level highlights. Supported code languages include JavaScript, TypeScript, Python, Go, Java, and PHP. DocxLens applies the Myers algorithm to line differences and word-level diffing to inline changes. Users can download a plain-text summary with line numbers and change types. Files are processed in the browser with WebAssembly, and the site says they are not uploaded to a server. After the page and processors load, PDF, Word, and Excel extraction can work offline. The free plan costs nothing, needs no signup, allows up to five documents at once, and limits each file to 20MB.

Who it suits

DocxLens suits lawyers and paralegals, finance and accounting teams, developers, and HR and operations teams comparing documents, spreadsheets, or code. It runs on the web and can handle some extraction offline after setup.

Limits

The free plan accepts files up to 20MB each and compares up to five documents at once. Offline PDF, Word, and Excel extraction works after the page loads and its processors initialize.

Getting started

1. Open https://www.docxlens.com/ in a web browser.
2. Add up to five documents, each no larger than 20MB.
3. Compare the documents in synchronized columns.
4. Download the plain-text diff summary if needed.

Verdict

DocxLens covers document, spreadsheet, and code comparisons in one web tool, with OCR for scanned PDFs and browser-based file processing. Its free plan has a five-document limit and a 20MB limit per file.