css-non-blocking SKILL.md skillA
css-non-blocking from thedaviddias/front-end-checklist is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add thedaviddias/front-end-checklist/css-non-blocking@git:20261004.4b0ddb9Pins git:20261004.4b0ddb9 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- thedaviddias/front-end-checklist
- Path
skills/css-non-blocking/SKILL.md- Versions recorded
- 2
- Latest version
- git:20261004.4b0ddb9, committed Oct 4, 2026
- First version recorded
- May 29, 2026
- Size
- 1,666 bytes
- Repository stars
- 74,516
- License
- MIT
Use when reviewing stylesheets, component styles, and responsive behavior related to Load CSS without blocking render. Check the rendered layout across breakpoints and interaction states before proposing a fix.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Load CSS without blocking render Render-blocking CSS delays First Contentful Paint—users see a blank screen while waiting for stylesheets to download and parse. ## Quick Reference - Use `<link rel="preload" as="style">` with onload handler - Inline critical CSS, defer non-critical styles - Use media queries to split CSS by viewport/feature - Modern: Next.js/Vite handle this automatically ## Check Analyze this CSS loading implementation to ensure stylesheets are loaded without blocking the DOM parsing and rendering process. ## Fix Implement non-blocking CSS loading using the preload technique with media attributes and loadCSS polyfill for better performance. ## Explain Explain how non-blocking CSS loading improves page performance by preventing render-blocking resources from delaying the initial paint. ## Code Review Review stylesheets, component styles, and responsive states related to Load CSS without blocking render. Flag exact selectors, declarations, or breakpoints that violate the rule in the rendered UI. --- For full implementation details, code examples, and framework-specific guidance, see `references/rule.md`. …
Read the whole file at its exact version.
How to install
mdr add thedaviddias/front-end-checklist/css-non-blocking@sha256:80cd8eac70e8b47bThe line at the top of this page pins the label git:20261004.4b0ddb9, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_dbm2srtbcu2hiy2r)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between May 29, 2026 and Oct 4, 2026, about one every 128 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261004.4b0ddb9 latest | 2026-10-04 | 4b0ddb9 | 1,666 B | A | view · diff |
| git:20260529.7c05904 | 2026-05-29 | 7c05904 | 1,672 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (1666 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
thedaviddias/front-end-checklist · 74,516 stars · license MIT · pushed 2026-10-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dbm2srtbcu2hiy2r GET https://markdownregistry.com/api/v1/resolve?ref=thedaviddias/front-end-checklist/css-non-blocking GET https://markdownregistry.com/api/v1/blob/80cd8eac70e8b47b65158be7a21cc35aee64775d20c285684f540f1e507055db
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.