SEO Lab · free · no account
Free SEO tools, right in your browser
The tools we use every day in SEO and GEO projects, open to everyone. They run locally in your browser — the text and data you enter are never sent to us.
SERP snippet simulator
See how your title and description look in Google on desktop and mobile — measured in pixels, like Google does.
Open the tool →SEO content analyzer
Keyword density, readability, n-grams and structure checks for your text or HTML.
Open the tool →Core Web Vitals speed test
Measure LCP, INP, CLS and Lighthouse scores for any site, with real-user data from Google.
Open the tool →Schema markup generator
Ready-to-paste structured data: organization, local business, FAQ, article, product, breadcrumb.
Open the tool →robots.txt & llms.txt generator
Control which crawlers and AI bots can access your site — plus an llms.txt file for GEO.
Open the tool →GEO readiness score
A 2-minute diagnostic: how ready is your site to be cited by ChatGPT, Perplexity and Google AI?
Open the tool →SEO ROI calculator vs Google Ads
How much traffic and value a top-3 position brings — compared with the cost of the same traffic in Ads.
Open the tool →Question & keyword generator
A map of questions, comparisons and long-tail variants from a single seed keyword.
Open the tool →Text cleaner & slug generator
Clean up text (quotes, spaces, case) and generate tidy URL slugs from titles.
Open the tool →Hreflang tag generator
Reciprocal hreflang tags for multilingual sites — as HTML, HTTP headers or sitemap entries, with validation.
Open the tool →UTM link builder
Consistent UTM links for campaigns, with naming conventions, CSV batches and QR codes.
Open the tool →301 redirect generator
Turn a list of old → new URLs into .htaccess, nginx or CSV rules for migrations.
Open the tool →Headline analyzer
Score article and page titles: length, power words, clarity and click potential.
Open the tool →Why we built an SEO tool lab
Most free SEO tools are built for generic use: they ignore AI search, skip multilingual setups and treat every market the same. We built ours for the way people search in 2026 — in Google, but also in ChatGPT, Perplexity and Google AI Overviews — and for sites that work in more than one language.
The tools show you the symptoms quickly: a truncated title in search results, a slow page on mobile, missing structured data, AI bots blocked by mistake. For the causes and a repair plan, a complete SEO audit goes much deeper.
Privacy
All calculations happen in your browser. The only exception is the speed test, which sends the tested page address to Google PageSpeed Insights — exactly as if you used pagespeed.web.dev directly.
Let’s grow your site’s organic traffic
Send us your website address and we’ll reply with a free initial analysis and a concrete SEO strategy — no strings attached.
[email protected] · +40 771 430 955