Free SEO and marketing tools
Practical tools for everyday SEO, ads and social work. They run in your browser or check a public page for you, need no account and don't keep the addresses you check. Pick a tool, get the answer, and move on.
SEO tools
Check how a page appears in Google, find technical issues, generate structured data and make sure search engines can crawl what you want ranked.
SERP preview
See how your page shows up in Google and check title and description length.
Schema markup generator (JSON-LD)
Generate structured data for products, articles, local businesses and FAQs.
On-page SEO checker
Analyse one page: title, meta description, headings, canonical, images, structured data and common issues.
robots.txt checker
Check whether a URL can be crawled by search engines and list the sitemaps declared in robots.txt.
AI search tools (AEO and GEO)
Make your content easy for AI assistants and answer engines to read, quote and link to.
AI-friendly content checker
Check whether a page is easy for ChatGPT, Perplexity, Gemini and Google AI Overviews to read, quote and cite, with a score and concrete fixes.
llms.txt generator and validator
Generate an llms.txt file for your site from its sitemap, or validate an existing /llms.txt against the llmstxt.org format.
AI crawler access checker
See which AI crawlers (GPTBot, ClaudeBot, PerplexityBot, Google-Extended and more) can access a page, from robots.txt, meta robots, X-Robots-Tag and server responses.
Advertising tools
Work out whether a campaign makes money and write ads that fit every platform's character limits.
Social media tools
See how your links look when they are shared, before your audience does.
Tracking and analytics tools
Tag your links so every visit and sale is credited to the right campaign.
Frequently asked questions
Are these tools really free?
Yes. Every tool on this page is free, with no trial period and no account. Tools that check a live page have a per-minute limit to keep the service fast for everyone.
Do you store the data I enter?
No. Calculators and generators run entirely in your browser. Tools that read a public page (SEO check, Open Graph preview, robots.txt checker) fetch it once to show you the result and do not save the URL or the content. Only if you ask for the report by email do we keep your email and the report sent, as explained in our privacy policy.
What do I get with a Symbiote account?
The same checks, but for whole sites and many brands at once: scheduled SEO audits, rankings and Search Console data, ad dashboards for Google Ads and Meta, AI content generation in your brand voice and automatic client reports.