Screaming Frog SEO Spider is a £199/year desktop licence for one of the deepest, most configurable site crawlers available — but it's a technical crawler only, with no keyword research, rank tracking, or content generation. Illumae is a browser-based, all-in-one platform at £40/month per domain that includes a simpler site audit alongside keyword research, AI content, and backlink checking.
Screaming Frog SEO Spider is genuinely a different category of tool from Illumae: a downloadable desktop application built for deep, highly configurable technical crawls, with JavaScript rendering, custom extraction rules, and scheduled crawls for large or complex sites. It doesn't do keyword research, rank tracking, backlink discovery, or content generation at all — it's a specialist crawler, not an all-in-one platform.
Illumae is a browser-based platform combining a simpler, less configurable site audit with keyword research, rank tracking, backlink checking, and AI content generation with direct publishing, all in one £40/month-per-domain subscription. This comparison is less "which is better" and more "which tool fits which job" — many technical SEOs genuinely use both, for different purposes.
How Illumae and Screaming Frog stack up across the full SEO workflow.
| Feature | IllumaeBest all-round | Screaming FrogCompared |
|---|---|---|
| AI article generation | ||
| Automated publishing to your CMS | ||
| Keyword research | ||
| Rank tracking | ||
| Backlink / link discovery | Via 3rd-party API only | |
| Technical site crawl | Deep, highly configurable | |
| JavaScript rendering during crawl | ||
| Custom extraction rules | ||
| Scheduled recurring crawls | ||
| Google Search Console integration | Via API connection | |
| Schema markup generator | ||
| Content calendar & autopilot | ||
| Runs in | Browser (any device) | Desktop app (Win/Mac/Linux) |
| Starting price | £40/mo per domain | £199/yr licence (~£17/mo) |
Comparison based on publicly available Screaming Frog SEO Spider pricing and feature information as of 2026.
Screaming Frog's licence is £199/year for one user, crawling unlimited URLs with JavaScript rendering, custom extraction, and third-party integrations (Ahrefs, Search Console, Analytics, PageSpeed Insights) — amortised, that's roughly £17/month, genuinely cheaper than Illumae on a pure crawler-vs-crawler basis. But it only crawls; it doesn't research keywords, track rankings, or write content.
Illumae is £40/month per domain and includes keyword research, rank tracking, a simpler site audit, backlink checking, and AI content generation with publishing — a broader toolset, at a higher price than Screaming Frog's licence alone, but replacing several separate tools (a crawler, a keyword tool, a rank tracker, a writing tool) rather than just one.
For deep technical crawls on large or complex sites, Screaming Frog's JavaScript rendering, fully custom extraction rules, and scheduled recurring crawls are more advanced than Illumae's site audit, which is a simpler, less configurable check aimed at catching common issues rather than deep technical forensics. Agencies and technical SEOs working on large enterprise sites often keep a Screaming Frog licence specifically for this reason, even alongside another all-in-one platform.
Screaming Frog doesn't do keyword research, rank tracking, or content generation at all — if those are needed, Illumae covers all of them plus a simpler site audit in one browser-based subscription, without installing desktop software or juggling several separate tools and their own licence renewals.
Since Screaming Frog and Illumae serve different purposes, this isn't really a migration — many teams use Illumae for keyword research, rank tracking, content, and everyday site audits, while keeping a Screaming Frog licence specifically for deep technical crawls on large sites when needed. Illumae's own site audit and keyword research are ready to use immediately after signup, no import required.
Not entirely — Screaming Frog is a specialist desktop crawler with no keyword research, rank tracking, or content generation, while Illumae is a broader all-in-one platform including those features alongside a simpler site audit. Many teams genuinely use both for different purposes rather than choosing one over the other.
No — Illumae's site audit checks the HTML a page serves directly rather than rendering JavaScript first, which is a real limitation for sites that inject significant content client-side. Screaming Frog's JavaScript rendering is more advanced in this specific area.
No — Illumae's site audit is a simpler, fixed check (broken links, meta tags, load time, alt text) rather than a fully configurable crawler with custom extraction rules. For deep technical forensics on large or complex sites, Screaming Frog's crawler is more capable.
Yes. Illumae is priced per domain at £40/month each, with no per-seat charges — an agency managing 3 client sites pays £120/month total, each domain getting its own full toolset.
Yes. Illumae offers a free plan that includes 3 AI article generations, keyword research tools, a content calendar, and a basic dashboard. No credit card is required to sign up.
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