Stax

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Tools
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Free SEO & Marketing

SEO tools for people who run or build websites: tag campaign links so analytics can tell where visits came from, generate JSON-LD structured data, preview how a page will look in Google results and in social shares, write a robots.txt file, build an XML sitemap and check how often a keyword appears in a text. They produce standard code or files that you paste into your own site.

Nothing needs an API key, a plugin or an account, and the URLs and text you enter stay in your browser. These tools help you prepare things search engines and social platforms read. They do not rank a site by themselves, and structured data or a sitemap improves how a page is understood, not whether it appears.

6 tools available

Most Popular

UTM Link Builder

Build UTM-tagged URLs for Google Analytics campaign tracking. Add utm_source, utm_medium, utm_campaign, utm_term, and utm_content to any URL.

Try it free →Schema Markup Generator

Generate JSON-LD schema markup for Article, Product, FAQ, LocalBusiness, Person, Event, Recipe, and HowTo. Copy the <script> tag for your <head>.

Try it free →Meta Tag Preview

Preview how your page looks in Google Search, Twitter/X cards, and Facebook shares. Generate the complete HTML meta tag snippet instantly.

Try it free →

Which tool should I use?

  • Telling campaigns apart in analytics: UTM Link Builder — builds links with utm_source, utm_medium, utm_campaign, utm_term and utm_content.
  • Structured data for a page: Schema Markup Generator — JSON-LD for Article, Product, FAQ, LocalBusiness, Person, Event, Recipe and HowTo.
  • How a page looks in search and shares: Meta Tag Preview — previews Google, X and Facebook cards and writes the HTML tags.
  • Controlling crawlers: robots.txt Generator — blocks chosen bots such as GPTBot or CCBot, disallows paths and adds your sitemap.
  • Listing your pages for search engines: XML Sitemap Generator — URLs, priority, change frequency and last modified date, downloaded as sitemap.xml.
  • Checking keyword use in a text: Keyword Density Checker — frequency and density for a target keyword, and the top 30 words.

All SEO & Marketing (6)

UTM Link Builder

Build UTM-tagged URLs for Google Analytics campaign tracking. Add utm_source, utm_medium, utm_campaign, utm_term, and utm_content to any URL.

Open tool →Schema Markup Generator

Generate JSON-LD schema markup for Article, Product, FAQ, LocalBusiness, Person, Event, Recipe, and HowTo. Copy the <script> tag for your <head>.

Open tool →Meta Tag Preview

Preview how your page looks in Google Search, Twitter/X cards, and Facebook shares. Generate the complete HTML meta tag snippet instantly.

Open tool →robots.txt Generator

Generate a robots.txt file. Block AI training bots (GPTBot, CCBot), disallow private paths, set crawl delay, and add your sitemap URL.

Open tool →XML Sitemap Generator

Create an XML sitemap with URLs, priorities, change frequencies, and last modified dates. Download the sitemap.xml for Google Search Console.

Open tool →Keyword Density Checker

Analyse keyword frequency and density for any text. Check target keyword density, view top 30 words, and avoid SEO over-optimisation.

Open tool →

Frequently Asked Questions

Which UTM parameters do I need?
The three most used are utm_source (where the link is placed, such as a newsletter), utm_medium (the kind of channel, such as email or social) and utm_campaign (the name of the campaign). utm_term and utm_content are optional and help tell keywords or ad variants apart. Keep spellings and capitalisation consistent, because analytics treats Email and email as different values.
Does structured data improve my ranking?
Structured data helps search engines understand what a page is and can make it eligible for richer results, but it does not by itself raise a ranking, and search engines decide when to show a rich result. It must match what is visible on the page. Check your markup with a testing tool after you add it.
Should I block AI crawlers in robots.txt?
That is a choice, and the bots differ: some crawlers collect content to train models and others fetch pages to answer a user's question or run a search. Blocking the second kind can keep your pages out of those answers. The generator lets you decide bot by bot. Remember that robots.txt is a request that well-behaved crawlers follow, not a lock.
Does a sitemap guarantee my pages get indexed?
No. A sitemap tells search engines which URLs exist and when they changed. Whether a page is indexed depends on the engine's view of its quality and of the site. Submit the sitemap in each search engine's webmaster tools and make sure the pages in it are linked from elsewhere on your site.
Is my site's data stored?
No. URLs, page text and keywords are processed in your browser and are not sent to Stax or kept.