Online tool to check the pixel width of Title and Description meta tags. Simulates Google SERP preview to avoid truncation.
TL;DR: Free online meta tag pixel checker that measures Title and Description width in pixels against Google SERP truncation limits, with realistic search result preview. An SEO essential. Runs locally.
This tool runs entirely in your browser. Open DevTools → Network panel and search your input — it appears in no request.
Usage Guide
Meta tags, analytics snippets, conversion pixels — before launch you need to confirm the page actually carries them: title length, description, OG tags, Facebook Pixel, Google Tag Manager, Baidu Analytics. This tool takes a URL or raw HTML and checks common tags and pixel code item by item, surfacing what is missing or malformed.
1. How to use
- Enter a page URL (fetches the HTML automatically) or paste raw HTML source.
- The tool checks against a checklist: SEO tags (title/description/canonical), social tags (OG/Twitter Card), analytics pixels (GTM/FB Pixel/GA4/Baidu Analytics).
- Results are itemized: pass / missing / malformed, with current values and fix suggestions.
2. Pixel code gotchas
- GTM plus GA4 both deployed often double-fires — check whether the gtag script is inserted twice.
- Under GDPR, pixels should defer until consent — verify the code is wrapped by the consent mechanism.
- FB Pixel base code must sit in <head> or near the top — placed at <body> bottom it misses PageView.
- SPA sites (React/Vue) may not re-trigger pixels on route change — a history-event listener is needed.
3. Tag checking is evidence gathering
Tag checking is essentially verification: SEO claims titles were optimized, conversion claims pixels were placed — but what the live page actually carries is only known by real fetching. Manual inspection has blind spots: caches and CDNs serve region-specific versions; SPAs need JS rendering before the head is complete. So the checker works on static head inspection with explanation, and for SPAs browser DevTools confirm the rendered DOM. The checklist is configurable — teams can run smoke checks on important templates inside CI.
FAQ
Completely free with no registration. Checks run locally in your browser and nothing you enter is uploaded.
Google truncates titles and descriptions by pixel width, and characters vary in width — pixel measurement is far more accurate.
Yes. The tool simulates a realistic Google SERP preview so you can see exactly where truncation would occur.
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