
CraftAPI
create-api.dev by Kong
deployd
EchoAPI
Fireapis
Turbofy
ItemsAPI
Device specifications API with 31,000+ phones, tablets & wearables. Get specs, images and pricing via REST API. Free tier available.

PageSpeed Insights
Pingdom
Google Lighthouse
WebPagetest
UptimeRobot
Ahrefs
Screaming Frog SEO Spider
GTmetrix is a free tool that analyzes your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and offers actionable recommendations on how to fix them.

Which is more popular?
Based on our record, GTmetrix seems to be more popular. It has been mentioned 143 times since March 2021.
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| Website | mobileapi.dev | gtmetrix.com |
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Overall verdict
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WordPress Speed Optimization - How I Got 100% GTmetrix Scores
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GTmetrix is a free tool that offers a comprehensive analysis of your page's speed performance. Using PageSpeed and YSlow, GTmetrix generates scores for your pages and provides actionable recommendations on how to...
Recommendations tracked on public social media and blogs since March 2021.


Tracking MobileAPI.dev since Mar 2026.
👉 Use Google PageSpeed Insights 👉 Try GTmetrix for detailed performance reports. - Source: dev.to / over 1 year ago
This basically defines how shifty your website is. If you've visited any website where the text and content just randomly moves as images and other content become visible, you'll know how disruptive and frustrating it can be. CLS aims to... - Source: dev.to / over 1 year ago
GTmetrix — Get detailed waterfall charts and load time breakdowns. - Source: dev.to / over 1 year ago
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