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Diffchecker

diffchecker.com

From $15/mo Free plan WebWindowsmacOSLinuxiOSAPI
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Spec score 9.2 #1 of 33 in File Comparison Software

What it is

Diffchecker compares text, code, and data in a browser or offline with its desktop app, highlighting additions, removals, and edits. Text comparisons can use side-by-side or unified views, adjustable precision, custom ignore rules, syntax highlighting, real-time editing, and change merging. Listed comparison options also include documents, images, spreadsheets, and folders, with features such as OCR, redlines, formula detection, and batch comparison. Basic is free, but some tools have monthly use limits: unified view and real-time editing each allow five tries, while character-level differences and merge changes each allow ten. Pro + Desktop costs $15 a month per user and includes offline comparisons with desktop apps for Windows, Mac, and Linux. Legal costs $20 a month per user and adds iManage integration and comparison-setting profiles. Enterprise costs $40 a month per user with annual billing, and includes SAML SSO, SCIM provisioning, and dedicated support. Browser comparisons stay in the browser unless saved and shared; Desktop comparisons run locally. The site states browser traffic is TLS-encrypted and its security program is ISO/IEC 27001 certified.

Spec sheet

What it does
Diffchecker compares text, source code, documents, spreadsheets, presentations, images and folders, highlighting additions, deletions and edits.Read 14 Oct 2026 · diffchecker.com
Intended users
The site describes use cases for developers and engineers, writers and editors, and data and operations teams.Read 29 Sep 2026 · diffchecker.com
Trial
The Desktop product page advertises a 14-day trial with no credit card required.Read 29 Sep 2026 · diffchecker.com
Integrations
Published integrations include Git, Microsoft Word and iManage Work; Enterprise also supports SAML identity providers and SCIM provisioning.Read 14 Oct 2026 · diffchecker.com
Security
The site states that traffic between the browser and Diffchecker is encrypted with TLS and that its information security program is certified to ISO/IEC 27001.Read 29 Sep 2026 · diffchecker.com
Privacy
The website says browser comparisons run in the browser and are not published or shared unless saved and shared; Desktop comparisons run offline on the computer.Read 29 Sep 2026 · diffchecker.com
Support
The pricing page lists priority support for Pro, Desktop, Legal, and Enterprise, with dedicated support channels and a service-level agreement for Enterprise.Read 29 Sep 2026 · diffchecker.com
API authentication
Text API calls accept an API key or an email parameter when no key is used, and return credit usage in headers and JSON.Read 14 Oct 2026 · diffchecker.com
API capabilities
The public HTTPS API exposes text, document, image and Excel comparison endpoints with JSON, HTML and DOCX redline outputs.Read 14 Oct 2026 · diffchecker.com
API credit model
Credits are metered by input size: one text credit covers 300,000 characters, while PDF, image and DOCX redline rates use pages, pixels or bytes.Read 14 Oct 2026 · diffchecker.com
API versioning
API clients can pin the Diffchecker-Version header to avoid automatically receiving breaking changes.Read 14 Oct 2026 · diffchecker.com
Apple complaint
The visible App Store reviews report inability to enter text and photo-permission problems on iOS 13.Read 14 Oct 2026 · apps.apple.com
Collaboration
Saved comparisons can be shared by URL and annotated with inline comments, with an account required for saving.Read 14 Oct 2026 · diffchecker.com
Company facts
LinkedIn lists Diffchecker as a privately held software-development company founded in 2011, headquartered in Vancouver, British Columbia, with 11–50 employees.Read 14 Oct 2026 · ca.linkedin.com
Comparison features
Text comparison includes side-by-side and unified views, adjustable diff precision, custom ignore rules, syntax highlighting, real-time editing, and merging changes.Read 29 Sep 2026 · diffchecker.com
Desktop app
Diffchecker Desktop runs comparisons locally and offline on Windows 10/11, macOS/OS X and Linux AppImage.Read 14 Oct 2026 · diffchecker.com
Desktop licensing
One desktop license can be used simultaneously on three devices by the primary user.Read 14 Oct 2026 · diffchecker.com
Desktop security
Diffchecker Desktop operates on the user's computer without interacting with Diffchecker web servers, according to its product page.Read 29 Sep 2026 · diffchecker.com
Diff precision
Users can choose smart, word-level or character-level comparison precision.Read 14 Oct 2026 · diffchecker.com
Document formats
Document comparison supports DOC, DOCX, PDF and PPTX, including PDF-to-Word comparisons, moved-content detection, formatting changes and OCR for scans.Read 14 Oct 2026 · diffchecker.com
Documentation depth
Developer documentation lists endpoint parameters, request bodies, response schemas, status codes, examples and interactive try-it controls.Read 14 Oct 2026 · diffchecker.com
Enterprise security
Enterprise advertises SAML SSO, custom integrations, dedicated 24/7 emergency support and no third-party trackers in the desktop app.Read 14 Oct 2026 · diffchecker.com
File size
The site states there is no file size limit, while noting that very large files take longer to render in a browser and Desktop is faster because it runs locally.Read 29 Sep 2026 · diffchecker.com
Ignore rules
Custom ignore rules can suppress timestamps, build numbers, session IDs or other specified strings.Read 14 Oct 2026 · diffchecker.com
Image comparison
Image comparison offers side-by-side, highlight, fade and slider modes plus pixel-level differences and automatic alignment.Read 14 Oct 2026 · diffchecker.com
iManage setup
Diffchecker Desktop can connect to an iManage Cloud account through its Preferences menu under Integrations.Read 29 Sep 2026 · diffchecker.com
Independent limit: product scope
An independent 2026 comparison describes Diffchecker as strong for cross-format diffs but weak as a full source-control workflow because it lacks repository history and branching.Read 14 Oct 2026 · toolfindings.com
Independent pricing view
An independent 2026 comparison characterizes the product as a low-priced cross-format comparer, while noting that tracked-change export and AI summaries require paid tiers.Read 14 Oct 2026 · vaquill.ai
Legal entity
The API agreement identifies the contracting company as Checker Software Inc.Read 14 Oct 2026 · diffchecker.com
Licence
The API is governed by a proprietary License and Services Agreement with Checker Software Inc.; no open-source licence is stated for the commercial product.Read 14 Oct 2026 · diffchecker.com
Limit: free tier
G2 reviewers report that saving, exporting, dark mode, batch comparison and version history are restricted or unavailable on the free tier.Read 14 Oct 2026 · g2.com
Limit: performance
G2 reviewers report slower responses, freezing or difficulty with very large files and high-context code comparisons.Read 14 Oct 2026 · g2.com
Limit: pricing
A G2 reviewer suggested lowering the $15 monthly price and another described paid tiers as necessary for desired functionality.Read 14 Oct 2026 · g2.com
Limits
The pricing page lists Basic allowances such as five tries per month for unified view and real-time editing and ten tries per month for character-level differences and merge changes.Read 29 Sep 2026 · diffchecker.com
Merge changes
Users can accept individual changes from either side to build a combined result.Read 14 Oct 2026 · diffchecker.com
Other file types
The pricing page lists document, image, spreadsheet, and folder comparison features, including OCR, redlines, formula detection, and batch comparison.Read 29 Sep 2026 · diffchecker.com
Praise: breadth
G2 reviewers repeatedly value support for code, text, PDFs, images, spreadsheets and desktop/web flexibility.Read 14 Oct 2026 · g2.com
Praise: usability
G2 reviewers repeatedly praise the simple interface, quick paste-or-upload workflow and clear color-coded highlighting.Read 14 Oct 2026 · g2.com
Rating on Apple App Store
1.0 out of 5 from 3 ratings.Read 14 Oct 2026 · apps.apple.com
Rating on Capterra
0.0 out of 5 from 0 reviews.Read 14 Oct 2026 · capterra.com
Rating on Chrome Web Store
4.7 out of 5 from 14 ratings.Read 14 Oct 2026 · chromewebstore.google.com
Rating on G2
4.6 out of 5 from 20 reviews.Read 14 Oct 2026 · g2.com
Rating on GetApp
0 out of 5 from 0 reviews.Read 14 Oct 2026 · getapp.com
Rating on TrustRadius
No rating or review count is listed; TrustRadius states that free version and free trial are available.Read 14 Oct 2026 · trustradius.com
Real-time editing
Editing either comparison pane recomputes the differences live.Read 14 Oct 2026 · diffchecker.com
Security claims
Diffchecker states that web traffic uses TLS, its security program is ISO/IEC 27001 certified, and desktop files remain on the user's device.Read 14 Oct 2026 · diffchecker.com
Spreadsheet comparison
Spreadsheet comparison supports XLSX, XLS, CSV, TSV and ODS files with formula-change detection and exports to PDF or Excel on paid tiers.Read 14 Oct 2026 · diffchecker.com
Text comparison
The web tool provides side-by-side and unified views with synchronized scrolling and colored insertions and removals.Read 14 Oct 2026 · diffchecker.com

Plans and prices

API Basic Free No credit card required 50 requests/month · 5 MB maximum request size Read 14 Oct 2026 · diffchecker.com
Basic Free Free for everyone Limited access to Pro features · online comparison tools Read 14 Oct 2026 · diffchecker.com
Pro + Desktop $15 a month per user/month; cancel anytime Ad-free · unlimited Pro features · Windows, Mac, Linux desktop · offline files · Redline · folder and batch comparison · AI summaries Read 14 Oct 2026 · diffchecker.com
Diffchecker Legal $20 a month per user/month Pro + Desktop features · iManage integration · comparison profiles Read 14 Oct 2026 · diffchecker.com
Enterprise $40 a month per user/month; annual billing only Everything in Pro + Desktop · SAML SSO · iManage integration · comparison profiles · SCIM provisioning · dedicated support · feature requests Read 14 Oct 2026 · diffchecker.com
API Standard $99 a month per month 10,000 credits/month · 100 MB maximum request size Read 14 Oct 2026 · diffchecker.com
API Business $299 a month per month 100,000 credits/month · 100 MB maximum request size Read 14 Oct 2026 · diffchecker.com
API Enterprise Priced on request Custom allocation Unlimited custom allocation · custom maximum request size Read 14 Oct 2026 · diffchecker.com

Every Diffchecker plan and price →

Strong points and limits

Strong points

  • Offers side-by-side and unified text views.
  • Includes folder comparison and batch comparison features.
  • Desktop supports offline comparisons.
  • No file size limit is stated.

Limits

  • Basic has monthly try limits on some features.
  • Pro + Desktop costs $15 a month per user.
  • Enterprise requires annual billing.

Who it suits

Diffchecker suits developers, writers, editors, and data or operations teams comparing changes across text and other file types. Desktop may suit users who need offline comparisons or local processing.

Diffchecker in depth

Read the full write-up

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 a 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 a 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 a 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 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 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.

Verdict

Diffchecker covers text comparisons as well as listed document, image, spreadsheet, and folder workflows. Check Basic's monthly limits and the per-user plan costs, or use Desktop for offline comparisons.

Where Specifiction places it

Alternatives to DiffcheckerAll alternatives →