Diffchecker

Overview

Diffchecker compares text, code, data, and other files, with browser-based and desktop workflows. It is best suited to people who need to inspect or reconcile changes across varied file types, from developers and editors to data and operations teams. The range is a strength, but Basic’s monthly try caps make it a poor fit for frequent comparison work.

For related tools, see Diff and Merge Tools, File Comparison Software, and Document Comparison Software.

Key features

Text, code, and data

Side-by-side and unified views, adjustable diff precision, custom ignore rules, and syntax highlighting give users control over how differences appear. Real-time editing and merging changes make it useful for reconciling revisions, not just spotting them. Basic access allows five monthly tries for unified view and real-time editing, and ten for character-level differences and merging; those limits will quickly constrain recurring work.

Other files and large comparisons

Diffchecker also covers document, image, spreadsheet, and folder comparisons, with features including OCR, redlines, formula detection, and batch comparison. That breadth can reduce the need to switch tools when a workflow spans file types. There is no stated file-size ceiling, although very large files take longer to render in a browser; the desktop app is faster because it runs locally.

Integrations and privacy

Desktop supports Git and a Microsoft Word add-in; Diffchecker Legal and Enterprise add iManage integration. Desktop can connect to an iManage Cloud account through Preferences under Integrations. Browser comparisons run in the browser and are not published or shared unless saved and shared. The site says browser traffic is encrypted with TLS and its information security program is certified to ISO/IEC 27001. Desktop operates on the user's computer without interacting with Diffchecker web servers, making it the clearer choice for offline comparisons.

Pricing

Basic: free. It provides limited access to Pro features, with some functions restricted by monthly try counts. This is suitable for occasional checks, not sustained use.

Pro + Desktop: $15 a month, billed per user/month. It includes full access to Pro features, Windows, Mac, and Linux desktop apps, and offline comparisons. The paid step makes sense for regular work or users who need local comparisons.

Diffchecker Legal: $20 a month, billed per user/month. It adds iManage integration and profiles for managing comparison settings to Pro + Desktop, fitting legal workflows that need those specific capabilities.

Enterprise: $40 a month, billed per user/month with annual billing only. It includes Pro + Desktop, SAML SSO, iManage integration, SCIM provisioning, and dedicated support. It is the plan for organizations that need identity and provisioning controls; annual-only billing is a meaningful commitment. Pro, Desktop, and Legal include priority support, while Enterprise gets dedicated support and a service-level agreement. Desktop has a 14-day trial with no credit card required.

Platforms

The web version runs in a browser, and desktop apps are available for Windows, macOS, and Linux. Choose web for browser comparisons; desktop adds offline use and faster rendering of very large files.

Who it's for

Developers and engineers can use syntax-aware text comparisons and Git integration; writers and editors can inspect document changes and use the Word add-in; data and operations teams can compare spreadsheets and folders, including batch work. Users who need only occasional text checks may find Basic sufficient, but its monthly caps are a real constraint. Diffchecker is less compelling for anyone seeking a paid desktop plan without per-user pricing.

Pros and cons

• Pros: Supports text, code, data, documents, images, spreadsheets, and folders, so varied comparison needs fit one product.
• Pros: Offline desktop comparisons and local processing offer a useful alternative to browser-based work.
• Pros: Text workflows include adjustable precision, ignore rules, editing, and merging, rather than only highlighting differences.
• Cons: Basic has low monthly allowances for several useful features, limiting its value for regular work.
• Cons: Paid plans are priced per user, and Enterprise requires annual billing.
• Cons: Very large files render more slowly in the browser, so desktop is preferable for those comparisons.

Alternatives

Diffract is another freemium option with a free plan and trial for Linux, macOS, and Windows.

SourceGear DiffMerge is worth considering for a free comparison tool available on Linux, macOS, and Windows.

Meld is a free option for Linux and Windows, with no trial required.

Code Compare offers a free version and a paid Pro version for Windows and as an extension; pick it if that platform scope suits your work.

mergers is a free option for Linux, macOS, and Windows.

P4Merge is another free option for Linux, macOS, and Windows.

WinMerge is a free, GPL-licensed option for Windows.

Compare Suite offers a freemium option for Windows.

Verdict

Diffchecker is a strong fit for people who regularly compare different kinds of files and value editing, merging, and offline desktop work in the same product. Its breadth and local desktop workflow are the main reasons to choose it; the per-user paid plans and Basic caps are the reasons to look elsewhere if your needs are light or your budget depends on avoiding recurring charges.