SEO for the whole search surface — free
Search isn't just Google anymore. Check domain authority and backlinks, research keyword volume, and find what people search on YouTube — across web, video and social. The basics are free and always will be: no account, no card, no trial countdown.
Domain Authority Checker
Most usedAuthority score, referring domains and global rank for any website.
Keyword Research
Real monthly search volume for any keyword, from Google's own data — plus related terms.
YouTube Keyword Tool
NewHundreds of real YouTube search suggestions for any topic — video & social SEO.
Backlink Checker
See which domains link to a site, sorted by how strong they are.
Link Intersect
Rarely freeFind sites that link to your competitors but not to you — the highest-hit-rate outreach list there is.
Local SEO Checker
NewScan your site's NAP and structured data, and get a prioritised local citation checklist.
Toxic Backlink Checker
Score spammy, low-quality links and generate a ready-to-submit Google disavow file.
All free tools
The full free toolkit — authority, links, keywords, video, local and technical checks.
Serious data, no paywall
Seoluma runs on its own independent index of 118 million domains and 7.1 billion links. Every tool here is free and needs no account — authority, backlinks, link gaps, keyword volume, site audits, rank tracking and AI visibility. Monitoring one site is free too; a second site is where a paid plan starts.
What you get free
Every tool, with no limit and no login: authority scores, referring domains, link intersect, keyword volume, YouTube research, site audits, rank tracking, AI visibility and AI action plans. Plus one monitored site, permanently.
What actually costs money
Two things. Sites beyond the first, because each one burns real crawl and AI time. And someone doing the work — finding the problems is free, fixing them is a job, and that is what RankMerit is for.
No signup, no card
The free tools work instantly — paste a domain or keyword and get real numbers. No account, no trial timer, no credit card to “unlock” a score.
Only 7 domains on the entire web score 90 or above
We measured the authority distribution of all 118 million domains in our index. The results contradict the usual advice: sites in the 30–39 band have a lower median number of referring domains than sites in the 20–29 band. More links is not the same as more authority.
Read the study| Authority | Domains | Median ref. domains |
|---|---|---|
| 0–9 | 82,480,000 | 1 |
| 20–29 | 2,660,000 | 22 |
| 40–49 | 64,500 | 660 |
| 70–79 | 244 | 116,680 |
| 90+ | 7 | 11,500,000 |