Web and SEO Tools

Choosing the right web tool

Web and SEO Tools on FreeMicroTools are for the small jobs around publishing a page or a campaign. The UTM Link Builder tags a link with campaign source, medium, name, term and content, spelled consistently so reports stay on one row. The Meta Tag Generator writes the title, description, canonical, robots, Open Graph and X card tags and previews the search result on a phone and a desktop, cut at pixel widths. The Keyword Density Checker shows which words and phrases a page really uses and whether a keyword is used enough or too much. The robots.txt Generator writes a correct file with presets for WordPress and shops and one-click blocks for AI crawlers, and the Redirect Generator turns a list of old and new addresses into 301 rules for Apache, Nginx, Netlify, Vercel or Cloudflare with loops caught. The URL Slug Generator turns a title in English, Hindi, Gujarati or another script into a clean web address. The Color Converter turns a colour between HEX, RGB, HSL, CMYK, OKLCH and CSS names, picks colours from a picture and checks contrast.

Use the UTM Link Builder before a newsletter or an ad goes out, the Meta Tag Generator and Keyword Density Checker when a page is written, the robots.txt and Redirect generators when a site is set up or moved, and the Color Converter whenever a brand colour moves between a design file, a stylesheet and print.

Everything you type or upload stays in your browser; nothing is sent to us or to a search engine. The tools follow the formats the analytics, search and AI companies publish, named on each page, and those change from time to time, so check the current guidance before relying on a number.

Questions

What is a UTM link?

A normal web address with extra parameters (utm_source, utm_medium, utm_campaign, and optionally utm_term and utm_content) that tell an analytics tool where a visit came from. The UTM Link Builder adds them in the right form and keeps every link in a campaign consistent.

How long should a meta description be?

Search engines show roughly 150 to 160 characters on desktop and fewer on a phone, cut by pixel width rather than character count. The Meta Tag Generator measures the real width of your title and description and shows where they would be cut.

How do I convert HEX to RGB?

Each pair of HEX digits is one channel in base 16: #1d4ed8 is red 29, green 78, blue 216. The Color Converter does it instantly in both directions, and also gives HSL, CMYK and OKLCH for the same colour.

Are these tools free?

Yes. Every tool is free with no sign-up, and what you type stays in your browser.