chore(webkit): encode jpeg screenshots natively via Page.snapshotRect

[yury-s]

Summary

• Page.snapshotRect now accepts format and quality, so WebKit encodes JPEG natively instead of returning a PNG that we re-encode with jpeg-js in Node.
• Removes the now-unused pngjs/jpeg-js imports and the PNG→JPEG round-trip.

[github-actions]

Test results for "MCP"

7266 passed, 1119 skipped

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Merge workflow run.

[github-actions]

Test results for "tests 1"

1 flaky

⚠️ [chromium-library] › library/popup.spec.ts:261 › should not throw when click closes popup `@chromium-ubuntu-22.04-node22`

39520 passed, 775 skipped

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Merge workflow run.

[github-actions]

Test results for "tests others"

1 fatal errors, not part of any test
4 failed
❌ [electron-page] › page/page-screenshot.spec.ts:321 › page screenshot › should work for webgl @electron-ubuntu-latest
❌ [electron-page] › page/workers.spec.ts:190 › should attribute network activity for worker inside iframe to the iframe @electron-ubuntu-latest
❌ [electron-page] › page/workers.spec.ts:190 › should attribute network activity for worker inside iframe to the iframe @electron-macos-latest
❌ [electron-page] › page/workers.spec.ts:190 › should attribute network activity for worker inside iframe to the iframe @electron-windows-latest

7 flaky

⚠️ [electron-page] › page/page-route.spec.ts:74 › should not support ? in glob pattern `@electron-ubuntu-latest`
⚠️ [electron-api] › electron/electron-tracing.spec.ts:56 › should respect tracesDir and name `@electron-macos-latest`
⚠️ [electron-page] › page/locator-frame.spec.ts:272 › should work with COEP/COOP/CORP isolated iframe `@electron-macos-latest`
⚠️ [electron-page] › page/page-route.spec.ts:74 › should not support ? in glob pattern `@electron-macos-latest`
⚠️ [chromium-library] › library/video.spec.ts:719 › screencast › should work with video+trace `@frozen-time-library-chromium-linux`
⚠️ [chromium-library] › library/inspector/recorder-api.spec.ts:120 › should type `@realtime-time-library-chromium-linux`
⚠️ [electron-page] › page/page-route.spec.ts:74 › should not support ? in glob pattern `@electron-windows-latest`

19964 passed, 664 skipped

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Merge workflow run.

[github-actions]

Test results for "tests 2"

25 failed
❌ [installation tests] › playwright-electron-should-work.spec.ts:21 › electron should work @package-installations-ubuntu-latest-node26
❌ [installation tests] › playwright-electron-should-work.spec.ts:31 › electron should work with special characters in path @package-installations-ubuntu-latest-node26
❌ [installation tests] › playwright-electron-should-work.spec.ts:44 › should work when wrapped inside @playwright/test and trace is enabled @package-installations-ubuntu-latest-node26
❌ [chromium-page] › page/workers.spec.ts:190 › should attribute network activity for worker inside iframe to the iframe @tracing-chromium
❌ [installation tests] › playwright-electron-should-work.spec.ts:21 › electron should work @package-installations-ubuntu-latest-node24
❌ [installation tests] › playwright-electron-should-work.spec.ts:31 › electron should work with special characters in path @package-installations-ubuntu-latest-node24
❌ [installation tests] › playwright-electron-should-work.spec.ts:44 › should work when wrapped inside @playwright/test and trace is enabled @package-installations-ubuntu-latest-node24
❌ [firefox-library] › library/heap.spec.ts:203 › cycle handles @tracing-firefox
❌ [firefox-library] › library/defaultbrowsercontext-2.spec.ts:252 › dialog.accept should work @firefox-macos-15-large
❌ [webkit-library] › library/heap.spec.ts:203 › cycle handles @tracing-webkit
❌ [webkit-page] › page/page-leaks.spec.ts:136 › expect should not leak @tracing-webkit
❌ [webkit-library] › library/har-websocket.spec.ts:80 › should include websocket handshake headers and status @webkit-windows-latest
❌ [webkit-library] › library/har-websocket.spec.ts:118 › should include websocket messages @webkit-windows-latest
❌ [webkit-library] › library/har-websocket.spec.ts:157 › should include larger websocket messages @webkit-windows-latest
❌ [webkit-library] › library/har-websocket.spec.ts:196 › should include gigantic websocket messages @webkit-windows-latest
❌ [webkit-library] › library/har-websocket.spec.ts:235 › should include binary websocket messages @webkit-windows-latest
❌ [webkit-library] › library/har-websocket.spec.ts:338 › should record websocket handshake failure @webkit-windows-latest
❌ [android-page] › page/page-autowaiting-basic.spec.ts:94 › should work with noWaitAfter: true
❌ [android-page] › page/page-autowaiting-basic.spec.ts:100 › should work with dblclick without noWaitAfter when navigation is stalled
❌ [android-page] › page/page-dialog.spec.ts:67 › should be able to close context with open alert
❌ [android-page] › page/page-goto.spec.ts:373 › should fail when exceeding maximum navigation timeout
❌ [android-page] › page/page-goto.spec.ts:441 › should prioritize default navigation timeout over default timeout
❌ [android-page] › page/page-request-continue.spec.ts:125 › should not allow changing protocol when overriding url
❌ [android-page] › page/page-set-content.spec.ts:153 › should handle timeout properly 2
❌ [android-page] › page/workers.spec.ts:190 › should attribute network activity for worker inside iframe to the iframe

32 flaky

⚠️ [chromium-library] › library/heap.spec.ts:203 › cycle handles `@tracing-chromium`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:682 › should capture attribute mutations inside a popup window `@msedge-dev-windows-latest`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:2089 › should not trip over complex urls in style tags `@msedge-dev-windows-latest`
⚠️ [chromium-library] › library/inspector/cli-codegen-python-async.spec.ts:80 › should save the codegen output to a file if specified `@chrome-ubuntu-22.04`
⚠️ [chromium-page] › page/page-keyboard.spec.ts:474 › should scroll with PageDown `@msedge-windows-latest`
⚠️ [chromium-library] › library/trace-viewer.spec.ts:682 › should capture attribute mutations inside a popup window `@chromium-windows-latest`
⚠️ [chromium-library] › library/video.spec.ts:719 › screencast › should work with video+trace `@chromium-windows-latest`
⚠️ [chromium-page] › page/workers.spec.ts:63 › should have timestamp on worker console messages `@chromium-windows-latest`
⚠️ [chromium-library] › library/browsertype-connect.spec.ts:189 › launchServer › should ignore page.pause when headed `@chromium-macos-15-large`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:177 › serviceWorker(), and fromServiceWorker() work `@chromium-macos-15-large`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:434 › should produce network events, routing, and annotations for Service Worker (advanced) `@chromium-macos-15-large`
⚠️ [chromium-library] › library/heap.spec.ts:203 › cycle handles `@chromium-macos-15-large`
⚠️ [chromium-library] › library/inspector/cli-codegen-2.spec.ts:504 › cli codegen › should generate getByTestId for any of the configured testIdAttributes `@chromium-macos-15-large`
⚠️ [chromium-library] › library/video.spec.ts:719 › screencast › should work with video+trace `@chromium-macos-14-xlarge`
⚠️ [chromium-library] › library/screenshot.spec.ts:215 › page screenshot › should not hang when event loop is blocked `@chromium-macos-15-xlarge`
⚠️ [chromium-library] › library/video.spec.ts:682 › screencast › should capture full viewport on hidpi `@chromium-macos-15-xlarge`
⚠️ [chromium-library] › library/video.spec.ts:719 › screencast › should work with video+trace `@chromium-macos-15-xlarge`
⚠️ [chromium-library] › library/chromium/chromium.spec.ts:434 › should produce network events, routing, and annotations for Service Worker (advanced) `@chrome-beta-ubuntu-22.04`
⚠️ [firefox-library] › library/inspector/cli-codegen-3.spec.ts:224 › cli codegen › should generate frame locators (4) `@tracing-firefox`
⚠️ [firefox-library] › library/defaultbrowsercontext-2.spec.ts:140 › should create userDataDir if it does not exist `@firefox-macos-15-large`
⚠️ [firefox-library] › library/defaultbrowsercontext-2.spec.ts:161 › should have passed URL when launching with ignoreDefaultArgs: true `@firefox-macos-15-large`
⚠️ [firefox-library] › library/defaultbrowsercontext-2.spec.ts:183 › should handle exception `@firefox-macos-15-large`
⚠️ [firefox-library] › library/defaultbrowsercontext-2.spec.ts:267 › exposes browser `@firefox-macos-15-large`
⚠️ [firefox-library] › library/hit-target.spec.ts:319 › should detect overlay from another shadow root `@firefox-macos-15-large`
⚠️ [firefox-page] › page/page-emulate-media.spec.ts:144 › should keep reduced motion and color emulation after reload `@firefox-macos-15-large`
⚠️ [firefox-library] › library/screenshot.spec.ts:215 › page screenshot › should not hang when event loop is blocked `@firefox-macos-15-xlarge`
⚠️ [webkit-library] › library/browsercontext-reuse.spec.ts:117 › reuse launch › should reset serviceworker `@tracing-webkit`
⚠️ [webkit-library] › library/browsertype-connect.spec.ts:792 › launchServer › should upload a folder `@webkit-macos-15-xlarge`
⚠️ [webkit-library] › library/browsertype-connect.spec.ts:792 › run-server › should upload a folder `@webkit-macos-15-large`
⚠️ [webkit-library] › library/video.spec.ts:371 › screencast › should scale frames down to the requested size `@webkit-macos-15-large`
⚠️ [webkit-page] › page/page-request-continue.spec.ts:182 › post data › should amend post data `@webkit-macos-15-large`
⚠️ [android-page] › page/page-route.spec.ts:317 › should not throw if request was cancelled by the page

88746 passed, 4113 skipped

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Merge workflow run.