Find your hidden keyword gems
Professional-grade SEO tools — completely free, no account, no paywalls. Fast, accurate answers for every question you ask before hitting publish.
Free SEO Tools — SERP Preview, Meta Tag Analyzer & More
Free online SEO tools — SERP preview, keyword density, meta tag analyzer, readability checker, word count. No signup. No limits. Find your hidden keyword gems.
The Toolkit
Three surfaces. 80 tools. One browser tab.
Every SerpGem tool runs in your browser, answers in under 10 seconds, and ships with a proper user manual. Pick your lane.
Content & Writing
Write tighter. Ship cleaner.
Readability scores that match Hemingway. Word and character counts that respect Twitter, Google, and LinkedIn limits. Keyword density that shows you're on topic, not keyword-stuffed. Every writing check you need, no Grammarly Premium required.
See all 30 content toolsSEO Analysis
Rank smarter, not harder.
Cluster keywords by search intent, not just string similarity. Classify informational vs commercial queries at a glance. Grade headlines against the same CTR heuristics that CoSchedule charges for. Strategy-grade analysis, free.
See all 21 seo toolsTechnical SEO
Before-you-ship insurance.
Preview how your page shows up in Google results. Inspect every meta tag a crawler sees. Generate schema markup that validates against schema.org. Catch the ship-breakers before the deploy, not after Search Console emails you at 3 AM.
See all 29 technical toolsWhy SerpGem
Built for the 90% of SEO work that doesn't need a $500/mo dashboard
The enterprise platforms are powerful. They're also overkill when all you need is a quick pixel-width check before hitting publish.
Instant, not eventual
Client-side tools run in your browser. No server round-trips, no loading spinners, no rate limits.
Privacy by default
Your pasted content never leaves your browser. No tracking of tool inputs. Analytics and ads only with your consent.
Genuinely free
No freemium gates. No credit card for the full feature set. Ad-supported, just like the old web — and that keeps it simple.
Bookmark us and get back to writing
Open any tool in a new tab whenever you need it. No login, no onboarding. Just the answer you came for.