Screaming Frog vs Ahrefs Site Audit

Screaming Frog (SEO Spider desktop crawler) and Ahrefs Site Audit (Cloud SEO crawler inside an all-in-one SEO platform) on the same 24 capabilities, with a source for every cell and charts counted from the table.

Checked 21 October 2026 against each vendor's own public pages. Sources below.

Screaming Frog

SEO Spider desktop crawler

Paid licence $279 per user per year (1-4 licences)Runs on your machine

Ahrefs Site Audit

Cloud SEO crawler inside an all-in-one SEO platform

Paid plans: Starter $29/mo; Lite $129/mo; free tierRuns in the vendor cloud

Compatibility at a glance

Screaming Frog scores 92 on coverage and 75 on automation; Ahrefs Site Audit scores 75 and 75. Both out of 100, counted from the table.

Out of 24 capabilities we compare for every tool.

15both have

7only Screaming Frog

1only Ahrefs Site Audit

Market map

Horizontal axisVertical axis

Scores are counted from the table: yes = 1, partly = ½, no or not found in public docs = 0, as a share of the rows on each axis. Horizontal: Crawl, audit and data coverage (12 rows). Vertical: Automation and AI agents (6 rows). Hover or focus a marker for the breakdown; click to keep it open.

Coverage by group

Share of rows each tool covers in a group, 0–100, counted from the table below.

70Price and setup5 rows30

100Interfaces2 rows0

50AI agents and integrations2 rows100

100Crawl3 rows83

100Audit5 rows80

75Data sources4 rows63

83Reports and follow-up3 rows50

83Overall24 rows58

Side by side

Capability	Screaming Frog	Ahrefs Site Audit
Price and setup
Free to use	Partly: Paid licence $279 per user per year (1-4 licences)	Partly: Paid plans: Starter $29/mo; Lite $129/mo; free tier
Open source	No: Proprietary; free version is closed source	No: Proprietary SaaS
Runs on your machine	Yes: Crawls run on your own machine	No: Crawl runs in Ahrefs cloud
Works without an account	Yes: Licence key only; free version needs no sign-up	No: Free account and verified site required
Free tier	Yes: Free version crawls up to 500 URLs	Yes: 5,000 crawl credits per verified project/month
Interfaces
Desktop app	Yes: Windows, macOS (Apple Silicon/Intel), Linux	No: Web app only
Command line	Yes: Command-line crawling and exports	No: Not found in public docs
AI agents and integrations
MCP server for AI agents	Yes: Official MCP server since v24.0; paid licence only	Yes: Official hosted remote MCP, paid plans from Lite
API	No: No public REST API found; it consumes third-party APIs	Yes: API v3 Site Audit endpoints, paid plans from Lite
Crawl
JavaScript rendering	Yes: Integrated headless Chromium rendering	Yes: Optional JavaScript execution in crawl settings
Scheduled crawls	Yes: File > Scheduling with intervals and auto-exports	Yes: Scheduled crawls plus Always-on audit (Lite+)
Custom extraction	Yes: XPath, CSS Path, regex, custom search	Partly: Post-crawl search of raw/rendered HTML; no XPath found
Audit
Audit checks	Yes: Over 300 issues, warnings, opportunities (issues list)	Yes: 170+ issues, per Site Audit page
Hreflang	Yes: Missing return tags, bad codes, non-200 URLs	Yes: Hreflang issues and graph view
Structured data	Yes: Schema.org and Google rich result validation	Yes: Checked against 190+ Google/Schema.org requirements
Core Web Vitals / Lighthouse	Yes: PageSpeed Insights API: Lighthouse and CrUX data	Yes: CrUX and Lighthouse metrics; PSI API key
Accessibility	Yes: Automated WCAG checks using axe rules	Not found in public docs: Not found in public docs
Data sources
Google Search Console	Yes: Search Analytics and URL Inspection APIs	Partly: GSC import/verification of projects; deeper use unclear
Google Analytics 4	Yes: GA4 API connection during a crawl	Not found in public docs: Not found in public docs
Backlink data	Partly: Link metrics via Majestic, Ahrefs, Moz APIs	Yes: Own index in Site Explorer (free: 1,000 shown)
Keyword data	Partly: Only GSC query/position data per URL	Yes: Organic keywords in Site Explorer (free: 1,000 shown)
Reports and follow-up
Report exports	Yes: Spreadsheets, XML sitemaps, Google Sheets, Looker Studio	Yes: CSV and ZIP bulk issue export
Task list and fix recheck	Partly: Re-crawl and compare crawls; no task tracker found	Partly: Crawl-to-crawl comparison and alerts; no task list found
Reads Screaming Frog exports	Yes: Native: opens .seospider and .dbseospider crawls	Not found in public docs: Not found in public docs

yespartlynonot found in public docs

Where each one is stronger

Screaming Frog

Mature, widely used crawler with a very large built-in issue list (over 300 as published).
Built-in headless Chromium rendering with raw-versus-rendered HTML comparison.
Direct API connections to Google Search Console, GA4, PageSpeed Insights, Majestic, Ahrefs and Moz inside the crawl.
Axe-based accessibility checks and Schema.org/rich result validation.
Saved crawl files, scheduling with auto-exports, and crawl comparison, with a free tier of 500 URLs.

Ahrefs Site Audit

Large first-party backlink and keyword datasets alongside the audit, in one account
Hosted crawling with no local setup and high crawl speeds on verified sites
Always-on audit with email alerts and scheduled crawls without running anything locally
Official hosted MCP server and API v3 with Site Audit endpoints for AI agents
Free access for verified sites through Ahrefs Webmaster Tools

Questions

Screaming Frog: Paid licence $279 per user per year (1-4 licences). Ahrefs Site Audit: Paid plans: Starter $29/mo; Lite $129/mo; free tier. Prices as published on 21 October 2026; check the vendors' pricing pages before you buy.

Screaming Frog: crawls run on your own machine. Ahrefs Site Audit: crawl runs in Ahrefs cloud.

MCP server — Screaming Frog: official MCP server since v24.0; paid licence only; Ahrefs Site Audit: official hosted remote MCP, paid plans from Lite. API — Screaming Frog: no public REST API found; it consumes third-party APIs; Ahrefs Site Audit: aPI v3 Site Audit endpoints, paid plans from Lite.

The pricing page on the check date lists $279 per licence per year for 1-4 licences, with lower per-licence prices from 5 licences. A free version crawls up to 500 URLs. Licences are per user.

Yes, for verified sites: Ahrefs Webmaster Tools (now Ahrefs Free) includes Site Audit with 5,000 crawl credits per verified project per month. Analyzing competitors requires a paid plan.

How we compared

Every cell comes from the vendor's own public pages (product, documentation, pricing, release notes, repository) on 21 October 2026.
“Not found in public docs” means we could not confirm it from an official source, not that the feature is missing. Charts count it as 0.
Prices and plans change. Check the vendor's pricing page before you buy.
Spotted something out of date? Tell us and we will correct it.

Sources

Screaming Frog is a trademark of Screaming Frog Ltd. Ahrefs Site Audit is a trademark of Ahrefs Pte. Ltd.. Names and icons identify the products compared; SpiderHead is not affiliated with, endorsed or sponsored by Screaming Frog Ltd or Ahrefs Pte. Ltd.. Owners can ask us to remove an icon via contact.

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