Frameworks performance
How JavaScript frameworks score across LCP, INP and CLS.
At a glance the headline numbers for Frameworks performance
How JavaScript frameworks score across LCP, INP and CLS.
Gatsby passes TTFB most often of any framework. 88.0% of its sites pass. React passes least at 52.5%. jQuery (the most-used framework) sits at 56.6%. The gap is 36 percentage points.
The ranking sorted by TTFB at p75, fastest first
| # | Framework | TTFB p75 | Passing | Sites | |
|---|---|---|---|---|---|
| 1 | Gatsby | 562ms | 88.0% | 218 | |
| 2 | Angular | 643ms | 82.0% | 3,396 | |
| 3 | Svelte | 807ms | 74.7% | 471 | |
| 4 | Next.js | 874ms | 70.8% | 1,840 | |
| 5 | Remix | 1.0s | 60.7% | 53 | |
| 6 | Nuxt | 1.0s | 64.2% | 1,311 | |
| 7 | htmx | 1.1s | 62.3% | 305 | |
| 8 | Alpine.js | 1.1s | 61.3% | 2,689 | |
| 9 | Vue | 1.1s | 60.9% | 12,199 | |
| 10 | jQuery | 1.2s | 56.6% | 144,465 | |
| 11 | React | 1.5s | 52.5% | 9,658 |
Passing TTFB per framework which group passes the TTFB most often
88% of Gatsby sites pass TTFB. React trails 35 points behind, leaving 47% of its sites failing. computed
All five vitals at once the whole category without toggling - cell is the pass rate, small number the p75
One row per framework, one column per vital - the cell is the share of sites passing, the small number the p75. No toggling needed to see where the category actually differs.
Gatsby leads on TTFB: 88% of its sites pass. React trails at 53%. computed
Why this matters for the Core Web Vitals, and where to start fixing it
A JavaScript framework shapes how much code runs in the browser to put your page on the screen. Some render on the server and ship light; others send a large bundle and rebuild the page on the client, which lands on the main thread and shows up in INP. The framework is not destiny, but its defaults and how you use them decide how much JavaScript the visitor has to pay for.
Start by looking at what ships to the browser and when it runs. Render on the server where you can, split the bundle so each page only loads what it needs, and defer the work that is not required for the first interaction. Framework JavaScript runs on the main thread, so the less of it the browser has to execute, the better INP gets.
How does your framework affect Core Web Vitals?
Among the JavaScript frameworks, Gatsby reaches a good TTFB on 88.0% of sites; React on 52.5%.
212,308 crawled sites with Chrome field data, representing millions of real page loads. How we measured.