33 free SEO tools vs Ahrefs and Moz free tools
Ahrefs and Moz both give away a slice of their paid stack for free, and both are worth using. But their free tiers are built to hook you: Ahrefs wants you to verify a site you own, and Moz caps its free plan at 10 queries a month. The 33 tools on this site take a different bargain. No signup, any site, and a daily allowance instead of a monthly wall. Here is the honest head-to-head.
The short version
If you own the site and want a deep technical crawl, Ahrefs free Webmaster Tools is genuinely good and hard to beat. If you want the native Moz interface for a few Domain Authority or Spam Score checks, Moz free is fine within its 10-a-month limit. For everything in between, checking a competitor, running a quick backlink or keyword pull, auditing a page you do not own, a no-login tool that works on any URL is simply faster. That is the gap these 33 tools fill.
Head to head
| RankingHacks free tools | Ahrefs free tools | Moz free tools | |
|---|---|---|---|
| Signup required | None, ever | Free account for your own site data | Free Community account |
| Sites you can check | Any URL or domain | Mainly your own verified site | Any domain, but capped |
| Usage limit | A daily per-visitor allowance that resets each day | Limited history vs paid plans | 10 queries a month on Link and Keyword Explorer |
| Data source | Live Google Suggest plus Moz metrics | Ahrefs index (DR, backlinks) | Moz index (DA, Spam Score) |
| Number of free tools | 33 | About 5 to 6 standalone | About 5 |
| Best for | Fast checks on any site with no login | A deep audit of a site you own | DA and Spam Score spot checks |
Free-tier limits change often. These reflect each vendor as of August 2026; check Ahrefs and Moz for their current caps.
Which RankingHacks tool stands in for which
Most of what people reach Ahrefs or Moz free tools for has a no-login equivalent here. The Moz-powered metrics are literally the same numbers, because these tools read the same Moz index. The difference is scope and friction, not data quality.
| If you use | Use this instead | Why |
|---|---|---|
| Ahrefs Free Backlink Checker | Backlink Checker | Check any URL or domain, in bulk up to 1,000, with no account. |
| Ahrefs Free Keyword Generator | Google Keyword Tool | Hundreds of real Google phrases with volume, CPC, and trend on every one. |
| Ahrefs Website Authority Checker (DR) | Domain Authority Checker | Moz DA with a 4-year trend line and spam score instead of DR. |
| Ahrefs Broken Link / Site Audit preview | SEO Analyzer | A full on-page audit of any URL with a prioritized fix list. |
| Moz Domain Analysis | Website Authority Checker | A composite authority score from DA, PageRank, and followed links. |
| Moz Link Explorer | Backlink Checker | No 10-a-month cap, and bulk checks other free tiers do not offer. |
| Moz Keyword Explorer | Search Volume Checker | Paste a whole list and pull volume, CPC, and trend for every phrase at once. |
| Moz Spam Score | Spam Score Checker | The same Moz Spam Score, with a plain-English risk tier, no account. |
| Moz Link Intersect | Backlink Gap Analyzer | Sites that link to competitors but not you, ready as an outreach list. |
When Ahrefs or Moz free still wins
No comparison is worth much if it pretends the alternatives are useless, so here is the honest read. Ahrefs free Webmaster Tools crawls your own site against 170-plus technical checks and gives you full backlink history for it, which no keyword-embed tool replicates. If you are doing a serious technical audit of a site you control, start there. Moz still owns the Domain Authority and Spam Score metrics, and if you like working inside the Moz dashboard, its free plan covers light use. The tools here are the fast, unlimited, any-site layer, not a replacement for a full paid suite when you genuinely need one.
All 33 free tools
Every tool below is free, runs on real data, and needs no signup. They are grouped the way you actually work: research the keywords, check the authority and links, size up competitors, audit the page, then generate the markup.
Keyword Research
- Google Keyword Tool Hundreds of real Google search phrases for any seed keyword, with volume and CPC.
- Keyword Finder Buyer-intent and question keywords your audience actually searches for.
- Search Volume Checker Paste a keyword list, get volume, CPC, competition, and trend for each.
- Keyword Volume Checker One keyword’s volume, CPC, and trend across countries, side by side.
- Keyword Gap Analysis The keywords competitors rank for that you don’t. Up to 10 sites at once.
- Bing Keyword Tool Real Bing search phrases — the engine behind ChatGPT’s web results.
- Yahoo Keyword Tool Real Yahoo search phrases with volume data — an audience most tools ignore.
- Yandex Keyword Tool Real Yandex search phrases for Russian-language and CIS-market research.
- eBay Keyword Tool Real eBay shopper searches — pure buyer intent for listings and niche research.
- YouTube Keyword Tool What people search on YouTube — the world’s second-largest search engine.
- Wikipedia Keyword Tool Mine Wikipedia’s article graph for topical-coverage and entity research.
Backlinks & Authority
- Backlink Checker Every backlink pointing at any URL or domain. Bulk up to 1,000 checks.
- Backlink Gap Analyzer Sites that link to competitors but not you — a ready-made outreach list.
- Domain Authority Checker Moz DA with 4-year trend, linking domains, and spam score. 10k bulk.
- Website Authority Checker Composite authority score from Moz DA, PageRank, and followed links.
- Spam Score Checker Moz Spam Score with a plain-English risk tier. Vet before you link.
Competitors & Traffic
- Competitor Finder AI identifies your real organic competitors, with authority and traffic data.
- Website Traffic Checker Estimate any domain’s organic traffic and ranking keywords, per country.
- Top Pages Finder See which pages carry any site’s organic traffic. The 80/20 revealed.
- Organic Ranking Checker Every keyword a domain ranks for, with position and traffic per keyword.
- Subdomain Finder Every subdomain of a root domain, with traffic and authority per subdomain.
On-Page & Technical SEO
- SEO Analyzer Full audit of any URL: six category scores and a prioritized fix list.
- SEO Optimizer A ranked to-do list for any URL, with copy-paste HTML and effort estimates.
- SEO Content Checker Score any page against its target keyword: placement, density, readability.
- Keyword Density Checker Density plus modern relevance metrics, compared against the top SERP.
- H1 Checker Heading-hierarchy audit with competitor comparison and AI rewrites. 200 URLs.
- Title Length Checker Pixel-accurate truncation preview with top-10 SERP comparison and AI rewrites.
- Redirect Checker Hop-by-hop redirect traces across six user-agents. Catches what others miss.
- Listing Checker Citation audit for local SEO: your directories, plus the ones you’re missing.
SEO Generators
- Title Tag Generator AI title tags in six styles, pixel-checked and SERP-compared.
- Meta Description Generator AI meta descriptions in six styles with pixel-perfect length feedback.
- Open Graph Generator OG and Twitter Card tags with live previews across six platforms.
- Schema Markup Generator Valid JSON-LD for 15 schema types, with SERP preview and validation.
FAQ
Are these free SEO tools really free with no signup?
Yes. Every tool at /free-tools/ runs live in the browser on a free daily allowance per visitor, with no account, no email gate, and no trial wall. Ahrefs asks for a free account to see your own site data, and Moz asks for a free Community account and caps Link Explorer and Keyword Explorer at 10 queries a month.
Can these free tools check a competitor site, not just my own?
Yes. The RankingHacks tools check any URL or domain, which is the main gap in Ahrefs free tier: Ahrefs free is built around a site you own and verify, so competitor keyword and backlink analysis sits behind a paid plan. Moz free will check any domain but limits you to 10 queries a month.
Where does the tool data come from?
Keyword phrases come from live Google, Bing, YouTube, and other autocomplete data, with volume and CPC from the Keywords Everywhere dataset. Authority and backlink metrics such as Domain Authority and Spam Score are Moz metrics, the same numbers Moz shows in its own free tools.
When should I still use Ahrefs or Moz instead?
Use Ahrefs when you need a deep technical crawl and full historical backlink data for a site you own, which its free Webmaster Tools plan does well. Use Moz when you want the native Moz interface for a handful of DA or Spam Score lookups. For everything else, a no-login tool that checks any site with no monthly cap is faster.