Everything a page needs for SEO, in one studio
Replaces the five-tool shuffle of meta tag generators, social preview checkers, JSON-LD builders, SERP preview tools, and robots.txt generators.
URL Debugger
Paste any URL and see exactly what Google, Facebook, and other crawlers read: status, redirects, headers, conflicting meta and Open Graph tags — with the raw evidence behind every finding.
Pixel-accurate SERP preview
Google truncates titles by pixel width, not characters. Our preview measures actual pixel width, so you see exactly where Google will cut your title and description.
llms.txt generator
Generate the optional file some AI crawlers read to map your site — with page lists and one-line summaries. Google states it is not required for Search, so it is presented honestly.
Live social previews
See how your link looks on Facebook, X, LinkedIn, Slack, and Discord — all updating instantly as you type. No more publishing a broken social card.
Built-in JSON-LD generator & validator
Generate and validate structured data for Article, Product, FAQ, LocalBusiness, and more — right next to your meta tags. No separate trip to another site.
Server-side OG image checker
Verify your og:image bytes like Facebook does: real format, 1200×630 dimensions, aspect ratio, and size. Browsers can't do this — CORS blocks them.
Eight focused tools, one unified studio
Each tool has its own dedicated page with optimized SEO content. Use the studio for the full workflow, or jump straight to a single tool.
Visual SEO Studio
Interactive visual SEO workspace
Release Diff
Compare staging vs production URLs
SEO Regression Checker
Catch SEO drops between releases
Staging SEO Checker
Compare staging vs production
SEO Checker
Live website SEO evidence extraction
URL Debugger
See what crawlers actually read
llms.txt Generator
Optional AI crawler file builder
Hreflang Generator
Multilingual tag builder with validation
OG Image Checker
Server-side OG image validation
Social Meta Generator
Open Graph, Twitter/X Cards, meta tags
JSON-LD Toolkit
Build and validate structured data
Schema Markup Generator
Schema.org structured data
Social Preview Tool
Multi-platform link previews
SERP Preview Tool
Pixel-accurate Google preview
Robots.txt Generator
Crawl directives builder
From blank page to fully tagged in minutes
Set up your brand profile
Enter your brand name, domain, default OG image, and Twitter handle once. Every new page inherits these automatically.
Fill in your page details
Type your title, description, URL, and image. Watch the Google, Facebook, X, LinkedIn, Slack, and Discord previews update live.
Add structured data
Pick a schema type — Article, Product, FAQ, LocalBusiness — and fill in the form. Valid JSON-LD is generated automatically.
Copy and paste
One click to copy your meta tags, JSON-LD, and robots.txt. Paste into your HTML head. Save the page setup to return later.
Google truncates by pixel width. So does our preview.
Most meta tag generators show a character counter and call it a day. That is wrong. Google cuts titles at approximately 580px and descriptions at 920px — pixel width, not characters. Two titles with the same character count can truncate at completely different points.
- Measures actual text width, not character count
- Shows exactly where Google will cut your title
- Warns you when text will be truncated
- Try to break at word boundaries for clean cuts
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A perfectly sized title that fits
A description that fits within the pixel limit and displays fully in Google search results without any truncation at all.
One studio vs. five separate tools
Common questions
Is SerpCraft really free?
Yes. The core studio is completely free with no signup required. All data is stored locally in your browser. The site is supported by unobtrusive ads.
Does my data leave my browser?
No. Everything runs client-side. Your page setups, brand profile, and generated tags never leave your device.
How accurate is the Google SERP preview?
The preview measures actual pixel width of your text, following Google's documented truncation behavior. Titles truncate at ~580px, descriptions at ~920px.
Stop juggling five tabs.
Set up all your page SEO — meta tags, social previews, structured data, robots.txt — in one sitting. Free, no signup.
Open the Studio