LAB launches actual Playwright Chromium, Firefox and WebKit browser engines and captures what the selected public page rendered in a clean context.
SIGNATURE / MANAGED BROWSER WORKER / LAB V1.0Does it work
Does it work
outside your browser?
Send one public URL through clean Chromium, Firefox and WebKit engines on a managed worker. Compare the actual viewport, runtime failures and layout signals instead of guessing from compatibility tables.
Run LAB →CHROMIUMDESKTOPFIREFOXDESKTOPWEBKITDESKTOPCHROMIUMMOBILE EMULATION
LAB / ОЖИДАЕТ ЯВНОГО ЗАПУСКАОдин URL.
Один URL.
Разные браузерные движки.
LAB ничего не обходит при открытии страницы. Запустите проверку, чтобы открыть публичный URL в выбранных управляемых браузерах и сравнить фактический результат в окне просмотра.
WebKit on the worker is not marketed as physical macOS Safari, and the mobile cell is Chromium viewport/touch emulation rather than a physical Android phone.
URL/request validation blocks private destinations in the worker, while the system service separately denies loopback, RFC1918, link-local and metadata-class networks.
Every cell uses a fresh context. Screenshots return with the response for your browser to view or download and are not written to a LAB results library.
LAB V1 / WHAT IT PROVESEngine compatibility,
Engine compatibility,
not device certification.
Use LAB to catch browser-engine runtime failures, broken requests, viewport overflow and visible rendering divergence quickly. Physical Windows/macOS/iOS/Android certification remains a separate testing tier.
CELLS MAX 04NAVIGATION 15 SECCONTEXT FRESHPRIVATE NET DENIEDARTIFACT STORE НЕТACCOUNT NOT REQUIRED