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Comparium is no longer an available website-testing service: its team announced that it would discontinue the service on September 1, 2025. The product once offered browser-based visual and functional checks, but its old plan details and extension listing should not be mistaken for current availability. If you still need cross-browser testing, choose an active service based on the browsers, devices, and workflows your site requires.
What was Comparium?
Comparium was a cross-browser website-testing service and Chrome extension. Its Chrome Web Store listing described taking webpage screenshots and running real-time tests across browsers, operating systems, and screen resolutions. Users could compare screenshots manually or automatically, or compare a page with a mockup. The listing also said a Comparium account was required. These are descriptions from the marketplace listing, not independent test results. Chrome Web Store listing
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The extension listing identifies version 1.2, last updated July 6, 2021. It remained listed later, but an old marketplace entry does not establish that the service still works. The listing showed 4.5 stars from 8 ratings and 642 users when retrieved October 7, 2026; those figures describe the extension listing, not current service availability. Chrome Web Store listing
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Is Comparium still available?
No. In a notice dated July 16, 2025, the Comparium Team said, “We have made the difficult decision to discontinue the service on September 1, 2025.” That date has passed. The notice also said active subscriptions would be automatically refunded in full. Comparium discontinuation announcement
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Some third-party information conflicts with that announcement. Capterra’s listing, updated September 29, 2026, still describes Comparium in the present tense and reports a Basic plan at $15 per user per month. Because this conflicts with the vendor’s closure notice, treat the price and availability claims as unverified—not as a way to buy or renew Comparium. Capterra Comparium listing
What did Comparium’s plans and tools include?
Comparium’s historical guide described a free plan with one parallel test, up to 1,000 screenshots per month, unlimited screenshots per session, and 200 minutes of live testing per month. It also described a paid Live Plus plan as removing certain caps. These are historical plan terms only; they are not current offers following the announced discontinuation. Comparium product guide
Rank #2
- Compatible with 3 different connector types:RJ11/RJ45/BNC,used to test the detachable module of two remote points.
- 300 feet test distance (RJ-45/RJ-11/BNC).Ergonomic portable handheld design.Powered by 9V alkaline battery (not included).Convenient battery access.
- BNC terminator 25/50 ohm indication.Straight line or cross indication.The LED indicates the connection and failure of wires and pins.RJ-11/RJ-45 is equipped with 50u gold plating.
- Straight line or cross indication.The LED indicates the connection and failure of wires and pins.
- Simple one-click test.Quick test.High quality guarantee.
The combination of screenshots, interactive checks, and mockup comparison was intended to help teams spot visual differences and check how a page behaved across environments. The available product descriptions do not establish independent performance benchmarks or prove how well those features worked in practice.
How should you choose a Comparium replacement?
Browserling and BrowserStack both describe browser-testing services on their official product pages. Neither is a universal replacement for every workflow: compare the environment coverage and testing process you actually need, then verify current plan terms directly with the provider. Browserling · BrowserStack
- Environment coverage: Check required browsers and versions, operating systems, screen sizes, and whether you need access to real mobile devices rather than virtual environments.
- Testing workflow: Decide whether you need interactive manual checks, automated test execution, visual comparisons, or a mix.
- Integration: Confirm compatibility with your existing test framework and continuous-integration process.
- Team needs: Check parallel sessions, collaboration features, account management, and support requirements.
- Limits and cost: Verify current pricing, included minutes or sessions, concurrency, and user limits on the provider’s own plan page.
For occasional visual checks
If you only need to inspect a page in a few browser and screen-size combinations, prioritize quick access to those environments and a straightforward manual workflow. A large automated test matrix may add cost and setup without helping with an occasional check.
For a QA team or release pipeline
If testing is repeated for every release, confirm that the service supports your automation framework, the browser/device combinations in your test matrix, and the concurrency your team needs. Assess the full workflow—from running tests to reviewing failures—rather than choosing by browser count alone.
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What to do if you still have Comparium account information
The closure announcement said active subscriptions would be refunded automatically. If you believe a refund is still unresolved, use the contact or support route available through your original billing records or the vendor’s official channels; the announcement does not establish that the discontinued testing service remains accessible.
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