Meta Tags Checker
Inspect any URL's title, description, Open Graph, Twitter Card, and more.
Title tag best practices
The <title> is the single most important on-page SEO signal and the line search engines render as the clickable headline. Keep it under about 60 characters so it doesn't get truncated in the SERP. Lead with the keyword that matches user intent, then your brand: "Privacy-first analytics — OpenAnalyticsAPI" beats "OpenAnalyticsAPI — your analytics, your way". Every page should have its own unique title; duplicate titles across a site dilute relevance signals.
Meta description
Meta descriptions aren't a direct ranking factor, but they drive click-through from the SERP. Aim for 140–160 characters that summarize the page and include a soft call to action. Don't keyword-stuff; modern search engines often rewrite obvious filler. Missing descriptions force Google to synthesize one from page content, which is usually worse than what you'd write yourself.
Open Graph tags
Open Graph (og:title, og:description, og:image, og:url) controls how your page renders when shared on Facebook, LinkedIn, Slack, Discord, iMessage, and most other platforms that unfurl links. The image should be at least 1200×630 px and under 5 MB; smaller images get pixelated previews on retina screens. If you don't set OG tags, social platforms fall back to the regular title/description and a guessed image — often unflattering.
Twitter / X cards
Twitter/X uses its own card tags (twitter:card, twitter:title, twitter:image) but falls back to Open Graph when those are missing. For most sites, setting Open Graph correctly is enough; explicit Twitter tags are only worth it if you want a different image or copy on X than on other platforms. Use summary_large_image for landing pages, summary for everything else.
Canonical URL
The <link rel="canonical"> tag tells search engines which version of a URL is the authoritative one. It matters when the same content is reachable via multiple URLs — query parameters, tracking tags, http/https, www/non-www, trailing slashes, paginated archives. A missing or wrong canonical can split ranking signals across duplicate URLs or, worse, surface an analytics-tagged version (full of ?utm_source=...) as the main result.
Robots meta
The <meta name="robots"> tag controls indexing on a per-page basis (noindex, nofollow, noarchive, etc.). Common pitfalls: leaving noindex on a staging template after launch (kills the page's search visibility), or using noindex,nofollow on canonical archive pages, which prevents PageRank from flowing to deeper content.
Why monitoring meta changes matters
Title tags, descriptions, and OG images are the most-edited part of any site. They get changed by content teams, A/B test scripts, headless CMSes, third-party SEO plugins, and accidental git reverts. A single bad deploy can silently strip the canonical URL from your top-traffic pages, break unfurls in Slack and LinkedIn, or surface a placeholder description in search results — and you usually don't notice until rankings drop or click-through cratters.
OpenAnalyticsAPI lets you snapshot meta tags on every pageview and alert when they change unexpectedly. That turns "the title looked different yesterday" from a memory game into a concrete diff with a timestamp.
Monitor your meta tags over time
OpenAnalyticsAPI tracks your pages and alerts you when title, description, or OG tags change unexpectedly.
Get started free →