Web and SEO Utilities & Operator Guides
robots.txt and meta tag builders, Open Graph previews, URL encoding and other webmaster helpers.
Quick Summary / Direct Answer
OpenTools has 41 working web and seo tools. Each one runs in your own browser tab, so your files and inputs never touch a server. There is no account and no paywall.
Category Specifications
Working tools
41
Server upload
None
Runs on
Your browser
Cost
Free, no paywall
All Web and SEO tools
Read the guide, or open the tool straight away.
Meta Tag Generator
Run meta tag generator in your browser tab.
Open Graph Generator
Run open graph generator in your browser tab.
Twitter Card Generator
Run twitter card generator in your browser tab.
SERP Snippet Preview
Run serp snippet preview in your browser tab.
Robots.txt Generator
Run robots.txt generator in your browser tab.
Robots.txt Tester
Run robots.txt tester in your browser tab.
Sitemap Generator
Run sitemap generator in your browser tab.
Sitemap Viewer
Run sitemap viewer in your browser tab.
Canonical URL Builder
Run canonical url builder in your browser tab.
Hreflang Generator
Run hreflang generator in your browser tab.
Schema Markup Generator
Run schema markup generator in your browser tab.
Schema Markup Validator
Run schema markup validator in your browser tab.
HTML Head Inspector
Run html head inspector in your browser tab.
Link Extractor
Run link extractor in your browser tab.
Redirect Chain Planner
Run redirect chain planner in your browser tab.
URL Normalizer
Run url normalizer in your browser tab.
UTM Builder
Run utm builder in your browser tab.
UTM Parser
Run utm parser in your browser tab.
Query String Builder
Run query string builder in your browser tab.
Query String Parser
Run query string parser in your browser tab.
Domain Name Generator
Run domain name generator in your browser tab.
Domain Typo Generator
Run domain typo generator in your browser tab.
Favicon Inspector
Run favicon inspector in your browser tab.
Web App Manifest Generator
Run web app manifest generator in your browser tab.
Browser Compatibility Checklist
Run browser compatibility checklist in your browser tab.
CSS Gradient Generator
Run css gradient generator in your browser tab.
CSS Shadow Generator
Run css shadow generator in your browser tab.
CSS Border Radius Generator
Run css border radius generator in your browser tab.
CSS Clip Path Generator
Run css clip path generator in your browser tab.
CSS Grid Generator
Run css grid generator in your browser tab.
CSS Flexbox Generator
Run css flexbox generator in your browser tab.
CSS Clamp Calculator
Run css clamp calculator in your browser tab.
Responsive Breakpoint Tester
Run responsive breakpoint tester in your browser tab.
Viewport Size Calculator
Run viewport size calculator in your browser tab.
Aspect Ratio Calculator
Run aspect ratio calculator in your browser tab.
HTML Table Generator
Run html table generator in your browser tab.
Accessibility Contrast Checker
Run accessibility contrast checker in your browser tab.
ARIA Label Checklist
Run aria label checklist in your browser tab.
Heading Structure Checker
Run heading structure checker in your browser tab.
Keyword Density Analyzer
Run keyword density analyzer in your browser tab.
Text to HTML Link
Run text to html link in your browser tab.