Overview

Diffchecker compares text, code, and data in a browser or on desktop, with workflows for documents, images, spreadsheets, and folders as well. It is a strong fit for people who move between code and document comparisons, but Basic’s monthly try caps make it a poor choice for frequent use without a paid plan.

Its main advantage is breadth: text comparison sits alongside several other file workflows, with offline desktop use for people who prefer local comparisons. The trade-off is that meaningful recurring use starts at a per-user monthly price.

Key features

Text, code, and data

Side-by-side and unified views, adjustable diff precision, custom ignore rules, and syntax highlighting let users tailor how changes appear. Real-time editing and merging changes make Diffchecker useful for reconciling revisions, not just spotting them. Basic allows five monthly tries each for unified view and real-time editing, and ten each for character-level differences and merge changes. Those limits are restrictive for regular work; Pro provides full access to its features.

Documents and other files

Diffchecker also offers comparison workflows for documents, images, spreadsheets, and folders. OCR, redlines, formula detection, and batch comparison make it relevant beyond code and plain text. There is no stated file-size limit, though large files take longer to render in a browser; the local Desktop app is faster for very large comparisons.

Privacy and integrations

Browser comparisons run in the browser and are not published or shared unless saved and shared. Desktop comparisons run locally, and the Desktop app says it does not interact with Diffchecker web servers. Browser traffic is encrypted with TLS, and the company’s information security program is certified to ISO/IEC 27001. Git and a Microsoft Word add-in are listed for Desktop; Legal and Enterprise add iManage integration. Desktop can connect to an iManage Cloud account through Preferences under Integrations.

Pricing

Basic is free, with limited access to Pro features and monthly try counts on some functions. It suits occasional comparisons, but the caps make it a weak fit for sustained editing or merging.

Pro + Desktop costs 15.00 USD per month, billed per user/month. It includes full access to Pro features, desktop apps for Windows, Mac, and Linux, and offline comparisons. This is the most direct upgrade for individual users who need regular use or local work. Desktop offers a 14-day trial with no credit card required.

Diffchecker Legal costs 20.00 USD per month, billed per user/month. It adds iManage integration and profiles for managing comparison settings to Pro + Desktop, making it the relevant tier for teams with those needs. Enterprise costs 40.00 USD per month per user, with annual billing only. It includes Pro + Desktop, SAML SSO, iManage integration, SCIM provisioning, and dedicated support. Enterprise is aimed at organizations needing identity administration and a dedicated support channel; the annual-only term is a commitment to weigh.

Priority support is included for Pro, Desktop, Legal, and Enterprise; Enterprise also has dedicated support channels and a service-level agreement.

Platforms

The web version runs in a browser, and desktop apps are available for Windows, macOS, and Linux. Desktop’s offline comparisons suit users who want local processing, while the browser offers a convenient option for online comparisons.

Who it's for

Developers and engineers can use syntax-aware text comparisons and Git integration; writers and editors get document comparison and redlines; data and operations teams can use spreadsheet and folder comparisons, including formula detection and batch comparison. It is less suitable for someone who only needs occasional basic text checks but expects no usage caps, or for anyone who wants a one-time purchase rather than a per-user subscription.

Pros and cons

Pros: One product covers text, code, documents, images, spreadsheets, and folders, reducing the need to switch tools for different comparison jobs.
Pros: Offline Desktop comparisons and its stated local operation suit users who want to keep comparison work on their computer.
Cons: Basic’s monthly try counts constrain recurring use of several text features.
Cons: Paid plans are priced per user per month, and Enterprise requires annual billing.

Alternatives

For a broader shortlist, see File Comparison Software, Diff and Merge Tools, and Document Comparison Software.

Diffract is another freemium option with a free plan and trial for Linux, macOS, and Windows.
Beyond Compare is worth considering for a paid tool with a free trial and a listed perpetual Standard license at 35.00 USD per user for 1–4 users.
Buddi is free budgeting software, rather than a direct comparison-tool substitute.
Code Compare offers a free version and a paid Pro option for Windows and as an extension.
Beyond Compare is another paid option with a free trial and a one-time Standard Edition price of 35.00 USD per user.
Meld is a free option for Linux and Windows.
SmartSynchronize is a freemium option for Linux, macOS, and Windows, with a listed perpetual license.
cwdiff is a free Linux option.

Verdict

Choose Diffchecker if you need a single service for text and several other file comparisons, especially if offline Desktop use or its document and spreadsheet workflows matter. Its breadth is the reason to pay; look elsewhere if you need a high-volume free plan or would rather buy a perpetual license than take on a per-user subscription.

	Diffchecker	DocxLens
Free plan	Yes	No
Free trial	Yes	No
Paid from	$15/mo	—
Open source	No	No
Platforms	Linux, macOS, Web, Windows	Web
Free plan	Yes	Yes
Paid from	15 /user/mo	—
PDF comparison	—	Yes
Office file comparison	—	Yes
Deployment	—	web

Diffchecker vs DocxLens

Diffchecker

DocxLens