DocxLens review
A free offline-capable comparator for up to five PDFs, Office files, and code documents.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
DocxLens is a free, browser-based document comparison tool for lawyers, finance teams, developers, HR teams, and operations users. It compares PDFs, DOCX and DOC files, XLSX, XLS and CSV spreadsheets, plus JSON, text, Markdown and code files. Files are processed locally in the browser using WebAssembly, without uploads or an account. The comparison view supports up to five documents simultaneously, with side-by-side synchronized scrolling and line-level and word-level difference highlighting. Scanned PDFs are supported through OCR, and each file can be up to 20MB.
The pricing structure is straightforward: the Free plan costs $0, requires no signup, has no hidden limits, and provides browser-based processing. There are no paid tiers described. That makes DocxLens a practical fit for users who need recurring comparisons across mixed file types without adding a subscription or account requirement. Its multi-document view is particularly relevant when reviewing several versions or related files at once, while support for spreadsheets and code broadens its use beyond conventional Word and PDF review.
Its main trade-off is focus. DocxLens emphasizes local comparison, synchronized viewing, and readable difference highlighting rather than a broader document-review workflow. The published features include plain-text diff-summary export, but they do not establish formatted redlines or other markup-oriented review capabilities. The browser model also means the page must initialize before offline processing is available, and the 20MB per-file limit may constrain larger documents. Choose DocxLens for free, local, multi-format comparison; choose another tool if formatted redlines or larger-file handling are central requirements.
DocxLens pros and cons
- Where it wins
- Compares PDFs, Office files, spreadsheets, JSON, text, Markdown, and code
- OCR support handles scanned PDFs alongside standard document formats
- Local browser processing, synchronized scrolling, and five-document comparison
- Where it doesn't
- Each file is limited to 20MB
- Plain-text diff-summary export may not suit formatted review workflows
- Web-based access depends on page initialization before offline processing
DocxLens fact sheet, pricing and score →
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