RankLens
A free, Semrush-style research toolkit. YouTube keyword ideas and tag intel, full-site SEO audits, competitor gap analysis and page-speed checks — no signup, no cost, everything runs in your browser.
YouTube & Google keyword ideas
Enter a seed keyword to pull real autocomplete suggestions — the exact phrases people type into YouTube and Google search.
Optional: add a free YouTube Data API key for competition data
Without a key you still get all keyword ideas. With a free key (from Google Cloud Console) you also get result counts and top videos per keyword. The key never leaves your browser.
YouTube tag extractor
Paste any YouTube video URL to reveal its tags — see exactly how top-ranking competitors tag their videos.
Website SEO audit
Enter any page URL for a full on-page SEO check: title, meta, headings, images, links, schema, keyword usage and more.
Full site audit
Enter your domain — RankLens reads your sitemap, audits every page, and shows the issues affecting the most pages first.
Audits up to 40 pages per run on the free quota. For bigger sites, run it section by section.
Compare with a competitor
Put your page head-to-head with a ranking competitor and see exactly which checks you are losing.
Page speed check
Run a Google PageSpeed Insights test on any URL and see Core Web Vitals with plain-language guidance.
Optional: PageSpeed API key (raises the free quota)
RankLens runs 100% in your browser. Keyword ideas come from live Google/YouTube autocomplete; page audits use public metadata services. Free tiers apply on external services — if a check fails, wait a minute and retry.