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8-platform preview, pixel-accurate truncation, URL auto-fill, 4 output formats.
Paste a live URL. We'll fetch its existing meta tags and fill this form so you can audit + improve them.
Generate SEO-perfect meta tags. See them rendered on Google, Twitter, Facebook, LinkedIn, Discord, Slack, iMessage, and the browser tab. Pixel-accurate truncation analyzer included. URL auto-fill so you can audit any page in seconds.
Fill the form, or paste a URL and we'll auto-fill from the live page. Live updates as you type.
See how your page renders on Google, Twitter (both card sizes), Facebook, LinkedIn, Discord, Slack, iMessage, and the browser tab.
Plain HTML, Next.js metadata object, React Helmet, or Gatsby. Paste into your head tag and ship.
Google SERP, Twitter (Summary + Large Image), Facebook, LinkedIn, Discord embed, Slack unfurl, iMessage rich preview, browser tab. metatags.io covers 3 of these. We cover all 8 in one view.
Google truncates titles by pixel width, not character count. We measure with a canvas using Arial 20px bold (title) and 14px (description), so the warning fires exactly when Google would actually cut you off.
Paste any public URL. We fetch the live page, parse existing meta tags, and pre-fill the form so you can audit + improve in seconds. Run it on a competitor's URL to see what they're missing.
Audit tab flags missing or weak tags with severity (error / warning / info). Catches the 12 most common SEO mistakes: missing description, no canonical, no og:image, weak Twitter card, etc.
Plain HTML, Next.js Metadata API export, React Helmet for legacy React, and Gatsby helmet. One-click copy and download. Drops straight into your codebase.
Title, description, canonical, robots, theme-color, Open Graph (full), Twitter Cards (full), article: prefix tags, viewport, charset, author, keywords, locale. The everything box for SEO.
Set og:locale, language, and content-language headers. Ready to extend with hreflang. Generates the full Twitter / OG locale combo so non-English shares render correctly.
Form, generation, previews, and audit all run locally. The only exception is URL auto-fill, which has to make a cross-origin fetch. We never log your input.
Most pages we audit have at least one critical SEO issue: missing canonical, no og:image, broken Twitter card. Our audit tab catches all 12 of the common mistakes before you push live.
The 8-platform preview means you spot problems before a customer does. Image cropped wrong on iMessage? Title truncated on Twitter Large Image? Description missing on Slack? You'll see it here, in seconds.
Almost every other generator counts characters. Google counts pixels. The two answers diverge by 20-30 percent, enough to ship truncated titles you thought were fine.
Output works for plain HTML, Next.js App Router (Metadata API), React Helmet, Gatsby. No copy-paste-fix-the-syntax dance. Drops into your codebase.
| Feature | Molixa Meta Tag Generator | metatags.io | Moz Pro Title Tool |
|---|---|---|---|
| Free tier | Unlimited, no signup | Free, 3 platforms only | Paid Moz subscription |
| Platform previews | 8 (Google, Twitter L+S, FB, LinkedIn, Discord, Slack, iMessage, Tab) | 3 (Google, FB, Twitter) | 1 (Google) |
| Pixel-width truncation | Yes, canvas-measured | Char count only | Yes |
| URL auto-fill | Yes, with audit | Yes | Built into Moz Pro |
| Output formats | HTML, Next.js, React Helmet, Gatsby | HTML only | HTML only |
| Structured audit | Yes, 12 SEO checks | Visual only | Yes (paid) |
| Privacy | Form runs locally | Form runs locally | Cloud-tied |
| Discord / Slack / iMessage previews | Yes | No | No |
Paste your homepage URL into the auto-fill box. The audit tab tells you what's missing or weak. Fix in the form, copy the new HTML, ship.
Same flow on a competitor's URL. See exactly which tags they're using, what their og:image looks like cross-platform, and where they're missing coverage.
New page about to ship? Fill the form, preview across 8 platforms, copy the HTML or Next.js metadata. Catch truncation and missing OG image before launch instead of after.
Use the same tool to generate tags for every page on your site. Output is identical, no copy-paste drift between developers.
The Discord, Slack, and iMessage previews are unique to us. If your traffic comes from chat shares, those previews matter more than Google.
Use the Next.js or Gatsby output to drop generated metadata straight into your build pipeline. No template fiddling.
The form, the tag generator, the previews, the truncation analyzer, and the audit all execute locally. Your input never leaves the tab.
The single exception is the URL auto-fill feature. To fetch a public URL across origins, the request goes through a public CORS proxy (api.allorigins.win). The fetched HTML is parsed in your browser, not on our server. We never log, store, or analyze the URL or the result.
Pixel-accurate truncation, structured audit, multi-platform preview, URL auto-fill: everything you'd otherwise script yourself, in one tool.
Output for HTML, Next.js, React Helmet, Gatsby. Drop generated metadata into your codebase without rewriting.
Twitter, Facebook, LinkedIn, Discord, Slack, iMessage previews. See how a share will look on every channel before you publish.
Audit any client site by URL. Standardize generated tags across every page on every client. No subscription fee.
Free. No signup. No daily cap. Pixel-accurate truncation, URL auto-fill, structured audit, 4 output formats.
Start generatingThe Meta Tag Generator page is built, reviewed, and maintained by the Molixa team. We use the tool we ship and update the docs when the behavior changes.