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DocxLens

docxlens.com

Free plan Web
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Spec score 7.5 #17 of 25 in Document Comparison Software

What it is

DocxLens is a free web tool for comparing documents side by side, including contracts, spreadsheets, configuration files, text, and code. It accepts PDF, DOCX, DOC, XLSX, XLS, CSV, JSON, TXT, MD, and more than 15 code file types. Tesseract OCR extracts text from scanned or image-based PDFs when no text layer is detected. Excel and CSV comparisons work sheet by sheet and include cell values, formula results, and data columns. Code and JSON use syntax-aware line differences with word-level highlights for languages including JavaScript, TypeScript, Python, Go, Java, and PHP. Synchronized columns with scroll lock keep both documents aligned. DocxLens uses Myers line differences and word-level inline comparison, and exports a plain-text summary with line numbers and change types. Files are processed in the browser with WebAssembly and, after initialization, PDF, Word, and Excel extraction can work offline. The free plan costs nothing, requires no signup, allows five documents, and limits each file to 20MB.

Spec sheet

Purpose
DocxLens compares documents side by side, including contracts, spreadsheets, and config files.Read 8 Oct 2026 · docxlens.com
Intended users
The site describes workflows for lawyers and paralegals, finance and accounting teams, developers, and HR and operations teams.Read 8 Oct 2026 · docxlens.com
Privacy
Files are processed in the browser using WebAssembly, and the site says files are never uploaded to a server.Read 8 Oct 2026 · docxlens.com
Code and JSON
Code and JSON comparison uses syntax-aware line diffs with word-level highlights and supports languages including JS, TS, Python, Go, Java, and PHP.Read 8 Oct 2026 · docxlens.com
Diff algorithm
DocxLens uses the Myers algorithm for line-level differences and word-level diff for inline changes.Read 8 Oct 2026 · docxlens.com
Export
Users can download a plain-text diff summary with line numbers and change types.Read 8 Oct 2026 · docxlens.com
Limits
Each file can be up to 20MB, and up to five documents can be compared at once.Read 8 Oct 2026 · docxlens.com
Offline use
After the page loads and processors initialize, PDF, Word, and Excel extraction can work offline.Read 8 Oct 2026 · docxlens.com
Scanned PDFs
Tesseract OCR extracts text from scanned or image-based PDFs when no text layer is detected.Read 8 Oct 2026 · docxlens.com
Side-by-side view
Documents appear in synchronized columns with scroll lock.Read 8 Oct 2026 · docxlens.com
Spreadsheet comparison
Excel and CSV files are compared sheet by sheet, including cell values, formula results, and data columns.Read 8 Oct 2026 · docxlens.com
Supported formats
It supports PDF, DOCX, DOC, XLSX, XLS, CSV, JSON, TXT, MD, and 15+ code file types.Read 8 Oct 2026 · docxlens.com

Plans and prices

Free Free No signup · Up to 5 documents at once · 20MB per file · No hidden limits Read 8 Oct 2026 · docxlens.com

Every DocxLens plan and price →

Strong points and limits

Strong points

  • Supports office, PDF, text, JSON, and code files
  • OCR handles scanned PDFs
  • Spreadsheet comparisons include formulas and values
  • Browser processing keeps files off servers
  • No signup on the free plan

Limits

  • 20MB maximum per file
  • Up to five documents at once
  • Requires browser processors to initialize offline extraction

Who it suits

It suits lawyers, paralegals, finance and accounting teams, developers, and HR or operations staff comparing varied file formats. Browser-based processing also suits readers who want files kept off a server.

Verdict

DocxLens covers document, spreadsheet, PDF, JSON, and code comparison in one browser interface. Its five-document and 20MB limits define the free workflow, while local WebAssembly processing supports privacy and offline extraction after setup.

Where Specifiction places it

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