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Diffchecker

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(20)4.6/5

Diffchecker is a file and document comparison tool for text, code, PDFs, Word documents, Excel spreadsheets, PowerPoints, images, and folders. Diffchecker's free online tool is built for collaboration. It runs in any browser with no sign-up and lets users save diffs online, share them by link, and leave line-by-line comments. An AI summary tool can also explain complex or semantic differences in plain English (web only). Diffchecker Desktop is built for confidential work and is the stronger choice for compliance-sensitive workflows. It runs fully offline on Windows, Mac, and Linux, so files never leave the device, and it has no AI or LLM integrations. That makes it a private, secure choice for redlining legal contracts and other confidential documents. Professional legal redlining is the centerpiece for legal teams. Diffchecker produces polished, customizable Word and PDF redlines of contracts and agreements, comparing PDF to Word, PDF to PDF, or Word to Word, with tracked changes down to the word and character and OCR for scanned documents. The Diffchecker Legal plan adds iManage integration, which lets users redline documents directly from iManage and save results back to it. Enterprise adds SAML single sign-on, SCIM provisioning, and dedicated support. Text-diff features include: real-time text editor, syntax highlighting, ignore whitespace or custom text, PDF export, and automatic character or word-level granularity. Document-diff features include: changelog, formatting change detection (e.g. font size/style/color), move detection, redline, image detection, custom ignore rules, PDF or Word exports with a revisions report, and OCR. Image-diff features include: image auto-alignment, automatic change detection with a changelog, OCR, metadata diffs, and a variety of comparison views, making it a suitable choice for proofreading product labels. Plans start free, with Pro + Desktop $15, Legal $20, and Enterprise $40 per user per month, plus a free 14-day trial.

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