Semrush is one of the most powerful SEO platforms available, but its paid plans are priced for agencies and enterprise users. The free tier — available without a credit card on signup — provides ten keyword research queries per day, limited domain analysis, and access to several key features that are genuinely useful for small sites and individual SEOs.
What Semrush Gives You Free
10 keyword lookups per day. Each lookup shows search volume, keyword difficulty, CPC, trend, SERP features, and related keywords. Used strategically across a week, 70 weekly keyword lookups covers thorough research for most content planning needs.
Domain Overview for any domain. A summary of any domain's organic traffic estimate, top organic keywords, referring domains, and recent ranking changes. Limited in depth but useful for quick competitive snapshots.
Backlink Analytics (limited). A sample of any domain's backlinks with authority scores. Limited to the most prominent backlinks but provides a quick competitor link profile overview to supplement the more detailed data from Ahrefs Webmaster Tools as covered in our guide to Ahrefs free tools.
Topic Research tool (limited). Generates content ideas and questions around any seed topic. Useful for building content calendars and identifying People Also Ask opportunities as covered in our guide to PAA optimisation.
SEO Writing Assistant (limited). Analyses a piece of text for SEO, readability, and originality. Useful for spot-checking content before publishing.
| Audit Focus Area | Crawl Impact | Organic Ranking Weight | Verification Tool |
|---|---|---|---|
| Crawl Budget Governance | Critical for sites >100 URLs | High (Ensures fresh indexation) | SEOLinkScan Broken Link Checker |
| Canonicalization Consistency | Prevents duplicate dilution | High (Consolidates PageRank) | Inspect self-referential canonical tags |
| Robots.txt & Sitemap Sync | Guards crawl accessibility | Foundational bot directive | Google Search Console Crawl Stats |
| Mobile-First Viewport Scaling | Seamless responsive layout | Official Google mobile ranking factor | Lighthouse Mobile Performance |
Maximising Your 10 Daily Keyword Queries
Plan your keyword research sessions in advance. Group related keywords and research each group on a specific day. Prioritise competitor domain keywords over individual keyword lookups — a competitor domain overview gives you their top keywords in one query, effectively giving you dozens of keyword data points from a single credit.
As we covered in our guide to AI keyword research, use AI to generate your initial keyword lists and competitor hypotheses, then use Semrush free queries to validate volume and difficulty for your highest-priority targets rather than broad exploration.
When to Upgrade
Semrush free is sufficient for: basic keyword research, quick competitor checks, content idea generation, and SEO writing checks. The limitations become constraining when you need: comprehensive competitor backlink analysis, full keyword portfolio tracking, site audit capabilities, or detailed position tracking for large keyword sets. For most of these paid needs, the free combination of Ahrefs Webmaster Tools, Google Search Console, and our own free site tools provides equivalent capability at zero cost.
- Conduct Complete Monthly Site Audits: Scan your domain with SEOLinkScan to detect broken links, redirect loops, and server error codes.
- Validate Self-Referential Canonical Tags: Prevent duplicate content indexation by confirming every URL features a verified canonical tag.
- Review XML Sitemap Hygiene: Ensure your sitemap exclusively contains clean 200 OK indexable URLs with zero 404s or 301 redirects.
- Inspect Bot Log Files: Analyze server logs to confirm Googlebot and Bingbot are spending crawl budget on cornerstone commercial content.
Strategic Action Plan: Mastering Technical SEO Architecture
Semrush free provides 10 keyword lookups daily, limited domain analysis, backlink samples, topic research, and SEO writing checks. Maximise free credits by grouping research sessions, using competitor domain overviews for efficient keyword data, and combining with free Ahrefs, Search Console, and our free tools for comprehensive coverage. Upgrade to paid only when specific features are demonstrably limiting your SEO output.
Missed the previous article? Read: How to Rank for Near Me Searches in 2026