Open-source Python library for SEO and SEM workflows, including crawling with Scrapy, robots.txt and sitemap parsing, SERP APIs, log file parsing and text analysis.
advertools.readthedocs.io
Browser ExtensionOpen SourceFree tier
Web Vitals Chrome Extension
Google's open-source Chrome extension that measures Core Web Vitals in real time for the current page and compares against field data.
What it is
Google's open-source Chrome extension that measures Core Web Vitals in real time for the current page and compares against field data.
It sits in the browser extension category, and also covers page speed, free utility. It is built by Google Chrome team, based in United States, and has been around since 2020.
The Atlas does not rank tools. No scores, no "top 10", no affiliate links. Categories are descriptive, and two tools in the same category may solve very different problems. Trial the shortlist against your own site before deciding.
Alternatives & neighbours
9 tools sharing at least one category with Web Vitals Chrome Extension.
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Shopify app bundling on-page SEO fixes, structured data, image optimisation and speed improvements for merchants.
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Microsoft's free site owner console for Bing, providing search performance data, index and crawl diagnostics, URL submission, IndexNow support and keyword research.
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Korean keyword research tool for looking up search volume and analysing keyword demand, widely used for Naver and Google keyword work.
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Technology lookup service and extension reporting the software, hosting, analytics and advertising stack used by a website, with lead list exports.
builtwith.com
Site speed monitoring service running scheduled Lighthouse tests, tracking Core Web Vitals and real user data with budgets and CI integration.
calibreapp.com
Chinese webmaster tool suite from Chinaz covering SEO overview queries, Baidu weight estimation, app and site ranking lookups, WHOIS, ICP filing checks, reciprocal-link verification and a data API.
chinaz.com