Free SEO tools — complete list

155 Free SEO & Web Tools

SlapMyWeb offers 155 free tools across 7 categories. No signup is required. Most run in your browser; the PDF ↔ Office conversions and a few network lookups (DNS, WHOIS, SSL, headers) run on our server.

Categories

• SEO (40) — meta tag generator and analyzer, robots.txt generator and tester, XML sitemap generator and validator, schema markup generator and validator, canonical, hreflang, title, H1 and alt-tag checkers, Core Web Vitals tests, AI crawler checker, llms.txt generator and validator
• PDF & Documents (34) — merge, split, compress, resize, redact, sign, fill forms, OCR, compare, the PDF workspace editor, and PDF ↔ Word/Excel/PowerPoint conversions
• Developer (24) — JSON formatter, JSON ↔ CSV/YAML, HTML/CSS/JS formatters and minifiers, Base64 and URL encoders, hash generators, regex tester, JWT decoder, cron expression generator, SQL formatter
• Image (20) — compressor, resizer, cropper, format converter, background remover, image to text, screenshot mockup, favicon and QR code generators
• CSS & Design (16) — gradient, box-shadow, border-radius, flexbox, grid and animation generators, color palette and contrast ratio checker
• Security & Network (12) — password generator and strength checker, HTTP header checker, SSL certificate checker, DNS, WHOIS and IP lookup, CSP header generator, port checker
• Social Media (9) — Instagram font generator, hashtag generator, social image resizer, bio link generator, social preview, character counters

Browse all tools at slapmyweb.com/tools.