--- title: "#core-web-vitals articles | Hashnode" description: "Explore 156 articles tagged #core-web-vitals on Hashnode. Tutorials, guides, and how-tos from the community." url: "https://hashnode.com/tag/core-web-vitals" --- Tag # #core-web-vitals 156 posts · 5 followers [Apogee Watcher](https://hashnode.com/@apogeewatcher) · [7h ago](https://hashnode.com/posts/partial-page-loads-crux-what-field-data-quietly-drops/6af81f5389b3ba1d6b73e8a1) ### [Partial page loads and CrUX: what field data quietly drops](https://devlog.apogeewatcher.com/partial-page-loads-crux-what-field-data-quietly-drops?utm_source=hashnode&utm_medium=feed) Chrome UX Report percentiles are not a slower Lighthouse run. Incomplete visits, background starts, and navigation types quietly reshape what agencies can claim after a green lab score. 7 min read · [devlog.apogeewatcher.com](https://devlog.apogeewatcher.com/partial-page-loads-crux-what-field-data-quietly-drops?utm_source=hashnode&utm_medium=feed) [2](https://hashnode.com/posts/partial-page-loads-crux-what-field-data-quietly-drops/6af81f5389b3ba1d6b73e8a1) [Refill Flows](https://hashnode.com/@refillflows) · [2d ago](https://hashnode.com/posts/how-to-bulk-audit-core-web-vitals-without-a-pagespeed-api-key/6af589298169e68ac2fada84) ### [How to bulk-audit Core Web Vitals for hundreds of URLs without a PageSpeed API key](https://refillflows.hashnode.dev/how-to-bulk-audit-core-web-vitals-without-a-pagespeed-api-key?utm_source=hashnode&utm_medium=feed) Run real Lighthouse on a URL list or a whole sitemap, export lab Core Web Vitals to CSV, and skip the PageSpeed Insights quota. 8 min read · [refillflows.hashnode.dev](https://refillflows.hashnode.dev/how-to-bulk-audit-core-web-vitals-without-a-pagespeed-api-key?utm_source=hashnode&utm_medium=feed) [Apogee Watcher](https://hashnode.com/@apogeewatcher) · [3d ago](https://hashnode.com/posts/wordpress-speculation-rules-when-prerender-makes-lcp-worse/6af3fd7941f3d234483ad042) ### [WordPress Speculation Rules: When Prerender Makes LCP Worse](https://devlog.apogeewatcher.com/wordpress-speculation-rules-when-prerender-makes-lcp-worse?utm_source=hashnode&utm_medium=feed) Core 6.8 and Speculative Loading can make the next click feel instant. Here is why the page you are already on can get slower, and how to measure before you roll settings back. 8 min read · [devlog.apogeewatcher.com](https://devlog.apogeewatcher.com/wordpress-speculation-rules-when-prerender-makes-lcp-worse?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/wordpress-speculation-rules-when-prerender-makes-lcp-worse/6af3fd7941f3d234483ad042) [Winfred](https://hashnode.com/@winnx) · [4d ago](https://hashnode.com/posts/reserve-image-space-recipe-page-cls/6af2f0e69e92b5ea382aa778) ### [Reserve Image Space Before a Recipe Page Finishes Loading](https://winfred-notes.hashnode.dev/reserve-image-space-recipe-page-cls?utm_source=hashnode&utm_medium=feed) Keep recipe pages stable as images load. Learn how image dimensions, aspect ratios, and slow-connection tests help reduce Cumulative Layout Shift (CLS). 2 min read · [winfred-notes.hashnode.dev](https://winfred-notes.hashnode.dev/reserve-image-space-recipe-page-cls?utm_source=hashnode&utm_medium=feed) [Apogee Watcher](https://hashnode.com/@apogeewatcher) · [5d ago](https://hashnode.com/posts/lighthouse-used-to-punish-useful-preloads-framer-spent-a-year-fixing-that/6af15a6b27166d7fca35586e) ### [Lighthouse used to punish useful preloads. Framer spent a year fixing that.](https://devlog.apogeewatcher.com/lighthouse-used-to-punish-useful-preloads-framer-spent-a-year-fixing-that?utm_source=hashnode&utm_medium=feed) Lantern treated high-priority modulepreloads and fonts as if they blocked paint. Lighthouse 13.6 reads Chrome’s render-blocking signal instead. Here is what agencies should stop undoing. 9 min read · [devlog.apogeewatcher.com](https://devlog.apogeewatcher.com/lighthouse-used-to-punish-useful-preloads-framer-spent-a-year-fixing-that?utm_source=hashnode&utm_medium=feed) [Apogee Watcher](https://hashnode.com/@apogeewatcher) · [Nov 6](https://hashnode.com/posts/google-remove-crux-pagespeed-insights-api-how-to-prepare/6aed660b904bff15ffb2cc37) ### [Google to remove CrUX from PageSpeed Insights API; How to prepare](https://devlog.apogeewatcher.com/google-remove-crux-pagespeed-insights-api-how-to-prepare?utm_source=hashnode&utm_medium=feed) Google plans to stop returning CrUX field data from the PageSpeed Insights API. Lab Lighthouse results stay. Here is what to change in your integration before the keys go empty. 8 min read · [devlog.apogeewatcher.com](https://devlog.apogeewatcher.com/google-remove-crux-pagespeed-insights-api-how-to-prepare?utm_source=hashnode&utm_medium=feed) [Apogee Watcher](https://hashnode.com/@apogeewatcher) · [Nov 4](https://hashnode.com/posts/why-pagespeed-insights-jumped-overnight-lighthouse-13-6/6aeafb305ac11928f6281ae6) ### [Why did PageSpeed Insights jump overnight? (Lighthouse 13.6, site unchanged)](https://devlog.apogeewatcher.com/why-pagespeed-insights-jumped-overnight-lighthouse-13-6?utm_source=hashnode&utm_medium=feed) Lighthouse 13.6 changed how PageSpeed Insights simulates FCP and LCP. A higher lab Performance score can appear when the HTML did not move. Here is a short check. 6 min read · [devlog.apogeewatcher.com](https://devlog.apogeewatcher.com/why-pagespeed-insights-jumped-overnight-lighthouse-13-6?utm_source=hashnode&utm_medium=feed) [Toolsgrid](https://hashnode.com/@Toolsgrid) · [Nov 2](https://hashnode.com/posts/image-compression-dct-quantization-vs-canvas-resampling/6ae90843eb01799e929a9c82) ### [Image Compression: DCT Quantization vs Canvas Resampling](https://toolsgrid.hashnode.dev/image-compression-dct-quantization-vs-canvas-resampling?utm_source=hashnode&utm_medium=feed) Learn how DCT quantization differs from canvas resampling, how PNG and WebP keep alpha transparency, and why oversized images hurt LCP. 4 min read · [toolsgrid.hashnode.dev](https://toolsgrid.hashnode.dev/image-compression-dct-quantization-vs-canvas-resampling?utm_source=hashnode&utm_medium=feed) [Apogee Watcher](https://hashnode.com/@apogeewatcher) · [Nov 2](https://hashnode.com/posts/why-does-crux-say-no-data-for-my-client-site/6ae8fc13dc52ada64aa57444) ### [Why does CrUX say no data for my client site?](https://devlog.apogeewatcher.com/why-does-crux-say-no-data-for-my-client-site?utm_source=hashnode&utm_medium=feed) A blank field block on PageSpeed Insights is usually eligibility, not a broken lab run. The useful debug path comes before the client email. 7 min read · [devlog.apogeewatcher.com](https://devlog.apogeewatcher.com/why-does-crux-say-no-data-for-my-client-site?utm_source=hashnode&utm_medium=feed) [Muhammad Ali Mughal](https://hashnode.com/@ali978123) · [Oct 31](https://hashnode.com/posts/third-party-scripts-vs-inp-a-tag-governance-playbook/6ae5fd394992048445237b73) ### [Third-Party Scripts vs INP: A Tag Governance Playbook](https://resume-ai.hashnode.dev/third-party-scripts-vs-inp-a-tag-governance-playbook?utm_source=hashnode&utm_medium=feed) In most e-commerce and SaaS front-ends I audit, the largest block of JavaScript on the page was not written by the engineering team, is not code-reviewed, has no owner and changes without a deploy. It 9 min read · [resume-ai.hashnode.dev](https://resume-ai.hashnode.dev/third-party-scripts-vs-inp-a-tag-governance-playbook?utm_source=hashnode&utm_medium=feed)