Web Checker: SEO & Speed

by Faiz Azizan · drfaizazizan.com · Developer Tools

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

Audit page size, DOM complexity, on-page SEO, and Core Web Vitals. Dual-mode: SERP comparison or single-page CWV diagnostic.

Users

+7 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#156K

#130K among extensions

Version

2.2.0

updated 5 Jul 2026

Users

monthly, 3 months

Latest, 16 Oct 2026: 18 usersMove the mouse over the chart for any month

Ratings count

monthly, 3 months

Latest, 16 Oct 2026: 1 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Web Checker: SEO & Speed

Web Checker: SEO & Speed is a lightweight technical audit tool for SEO consultants, agencies, and website owners who need to check a page's "weight" fast — either comparing rivals on Google Search, or diagnosing any page you're currently viewing. Two Modes, One Extension 📊 SERP Comparison Mode — open a Google search results page and get, for each of the top 10 organic results: decoded + transfer HTML size, DOM element count, title length, H1 presence, an automatic WAF/Cloudflare challenge detector so blocked pages don't skew your data, a relative SEO Weight Score (0-100) against the batch average, and one-click CSV export for client reports. ⚡ Core Web Vitals Mode — open any regular page and get LCP, CLS, TTFB, and FCP rated against Google's official thresholds, a full page-weight measurement (HTML+CSS+JS+images+fonts), a resource breakdown by type with visual bars, a complete sortable resource list flagging the heaviest files, plain-English fix suggestions under each metric, and a composite Speed Score estimate. Why use it? 100% free, no account, no usage limits All processing happens on your device — nothing is sent to an external server Lightweight — vanilla JS, no heavy frameworks Best for: SEO/SEM consultants, digital marketing agencies, and small-to-medium website owners who want a fast technical audit without subscribing to an expensive tool.