| CARVIEW |
Select Language
HTTP/2 200
date: Wed, 23 Jul 2025 09:30:32 GMT
content-type: text/html; charset=utf-8
vary: X-PJAX, X-PJAX-Container, Turbo-Visit, Turbo-Frame, X-Requested-With,Accept-Encoding, Accept, X-Requested-With
etag: W/"52eb883ffb18cf67ff6a68f3d4bbfb24"
cache-control: max-age=0, private, must-revalidate
strict-transport-security: max-age=31536000; includeSubdomains; preload
x-frame-options: deny
x-content-type-options: nosniff
x-xss-protection: 0
referrer-policy: origin-when-cross-origin, strict-origin-when-cross-origin
content-security-policy: default-src 'none'; base-uri 'self'; child-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/; connect-src 'self' uploads.github.com www.githubstatus.com collector.github.com raw.githubusercontent.com api.github.com github-cloud.s3.amazonaws.com github-production-repository-file-5c1aeb.s3.amazonaws.com github-production-upload-manifest-file-7fdce7.s3.amazonaws.com github-production-user-asset-6210df.s3.amazonaws.com *.rel.tunnels.api.visualstudio.com wss://*.rel.tunnels.api.visualstudio.com objects-origin.githubusercontent.com copilot-proxy.githubusercontent.com proxy.individual.githubcopilot.com proxy.business.githubcopilot.com proxy.enterprise.githubcopilot.com *.actions.githubusercontent.com wss://*.actions.githubusercontent.com productionresultssa0.blob.core.windows.net/ productionresultssa1.blob.core.windows.net/ productionresultssa2.blob.core.windows.net/ productionresultssa3.blob.core.windows.net/ productionresultssa4.blob.core.windows.net/ productionresultssa5.blob.core.windows.net/ productionresultssa6.blob.core.windows.net/ productionresultssa7.blob.core.windows.net/ productionresultssa8.blob.core.windows.net/ productionresultssa9.blob.core.windows.net/ productionresultssa10.blob.core.windows.net/ productionresultssa11.blob.core.windows.net/ productionresultssa12.blob.core.windows.net/ productionresultssa13.blob.core.windows.net/ productionresultssa14.blob.core.windows.net/ productionresultssa15.blob.core.windows.net/ productionresultssa16.blob.core.windows.net/ productionresultssa17.blob.core.windows.net/ productionresultssa18.blob.core.windows.net/ productionresultssa19.blob.core.windows.net/ github-production-repository-image-32fea6.s3.amazonaws.com github-production-release-asset-2e65be.s3.amazonaws.com insights.github.com wss://alive.github.com api.githubcopilot.com api.individual.githubcopilot.com api.business.githubcopilot.com api.enterprise.githubcopilot.com; font-src github.githubassets.com; form-action 'self' github.com gist.github.com copilot-workspace.githubnext.com objects-origin.githubusercontent.com; frame-ancestors 'none'; frame-src viewscreen.githubusercontent.com notebooks.githubusercontent.com; img-src 'self' data: blob: github.githubassets.com media.githubusercontent.com camo.githubusercontent.com identicons.github.com avatars.githubusercontent.com private-avatars.githubusercontent.com github-cloud.s3.amazonaws.com objects.githubusercontent.com release-assets.githubusercontent.com secured-user-images.githubusercontent.com/ user-images.githubusercontent.com/ private-user-images.githubusercontent.com opengraph.githubassets.com copilotprodattachments.blob.core.windows.net/github-production-copilot-attachments/ github-production-user-asset-6210df.s3.amazonaws.com customer-stories-feed.github.com spotlights-feed.github.com objects-origin.githubusercontent.com *.githubusercontent.com; manifest-src 'self'; media-src github.com user-images.githubusercontent.com/ secured-user-images.githubusercontent.com/ private-user-images.githubusercontent.com github-production-user-asset-6210df.s3.amazonaws.com gist.github.com; script-src github.githubassets.com; style-src 'unsafe-inline' github.githubassets.com; upgrade-insecure-requests; worker-src github.githubassets.com github.com/assets-cdn/worker/ github.com/assets/ gist.github.com/assets-cdn/worker/
server: github.com
content-encoding: gzip
accept-ranges: bytes
set-cookie: _gh_sess=AIMHITp5GsSCZmneSKq9M1LRsta22pGkFrjKS%2BYrXK0TCele%2FyhqAz%2BVDC%2BVTz0ON0JIEuQp6iMEBRZmwS%2FeHKFDeTid7yZmfMak4EmoJJh3izU0ub9B3%2Fnk9nvfPUs6%2BDorz%2BXvkPFEeoaZZuzZyezod5X8Dnzj90w%2Bvue9EYnitsObbtvWgFsfuXF%2B5va%2BdK78qxXru0qb7f%2Bui5nyon5okk8VMn0OftB8db7M472LJKQG2mfRX8wqMoYM4SWhhpkQsBk9tuX8S1SCXpSD6Q%3D%3D--at3wOLWJ4k8TxxIx--MtFw2SvhQAq8JjqzRcc23Q%3D%3D; Path=/; HttpOnly; Secure; SameSite=Lax
set-cookie: _octo=GH1.1.1951937169.1753263031; Path=/; Domain=github.com; Expires=Thu, 23 Jul 2026 09:30:31 GMT; Secure; SameSite=Lax
set-cookie: logged_in=no; Path=/; Domain=github.com; Expires=Thu, 23 Jul 2026 09:30:31 GMT; HttpOnly; Secure; SameSite=Lax
x-github-request-id: 877C:26221E:82D8AD:A053BA:6880ABB7
paulirish (Paul Irish) · GitHub
paulirish
Follow
Skip to content
Navigation Menu
{{ message }}
paulirish
Follow
Paul Irish paulirish
-
Google Chrome, ♥z
- https://paul.irish
- @paul_irish@toot.cafe
- @paulirish.bsky.social
Sponsoring
Organizations
Pinned Loading
-
GoogleChrome/lighthouse
GoogleChrome/lighthouse PublicAutomated auditing, performance metrics, and best practices for the web.
-
-
-
What forces layout/reflow. The compr...
What forces layout/reflow. The comprehensive list. 1# What forces layout / reflow23All of the below properties or methods, when requested/called in JavaScript, will trigger the browser to synchronously calculate the style and layout*. This is also called reflow or [layout thrashing](https://www.kellegous.com/j/2013/01/26/layout-performance/), and is common performance bottleneck.
45Generally, all APIs that synchronously provide layout metrics will trigger forced reflow / layout. Read on for additional cases and details.
Something went wrong, please refresh the page to try again.
If the problem persists, check the GitHub status page or contact support.
If the problem persists, check the GitHub status page or contact support.
You can’t perform that action at this time.