Question 1

Which developer tools site has the fastest Core Web Vitals?

Accepted Answer

planetscale.com ranks #1 by LCP at 1108ms. Ranking includes 10 sites in this industry. Source: Google CrUX p75 field data (28-day trailing window).

Question 2

How many developer tools sites have "good" LCP?

Accepted Answer

7 of 9 sites with CrUX data meet Google's "good" LCP threshold of 2,500ms or less. Of 10 total sites tracked, 1 have insufficient data (too small for CrUX anonymization).

Question 3

Which developer tools site is slowest?

Accepted Answer

railway.app ranks last by LCP among the 10 sites with sufficient data. Slow LCP indicates main-content render delays; common causes include large images, render-blocking JS, slow server response.

Question 4

How is this developer tools ranking calculated?

Accepted Answer

Ranking is by LCP (Largest Contentful Paint) ascending — fastest first. LCP is one of three Core Web Vitals Google uses as a ranking signal. All measurements are p75 from Google CrUX, real Chrome user field data, 28-day trailing window. Sites without enough data appear last.

#	Domain	LCP	INP	CLS
1	planetscale.com	1108ms	46ms	0.00
2	cloudflare.com	1579ms	157ms	0.00
3	netlify.com	1626ms	167ms	0.01
4	render.com	1838ms	124ms	0.00
5	github.com	1853ms	87ms	0.05
6	gitlab.com	2164ms	69ms	0.05
7	fly.io	2287ms	61ms	0.01
8	supabase.com	3855ms	192ms	0.03
9	vercel.com	4382ms	194ms	0.02
10	railway.app	—	—	—

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