We may earn a commission if you buy through links on this page. It never changes a score or a ranking. How we make money
It's a split decision.
Choose Screaming Frog SEO Spider for desktop crawling and technical SEO audits: its free plan caps crawls at 500 URLs, and the paid licence is $199 per user yearly. Choose Prerender when JavaScript-heavy pages need to be rendered and cached for search, social, or AI crawlers; its plans start at $59 monthly for 30,000 renders, with a 30-day trial. These products solve different problems, so neither is a direct substitute for the other.
01Side by side
| Screaming Frog SEO Spider | Prerender | |
|---|---|---|
| Starting price | $16.58/month, billed annually ($199/year) | $59/month |
| Free plan | Yes; 500 URL crawl limit | No; 30-day trial |
| Best for | Technical SEO audits and website crawling | Rendering JavaScript pages for crawlers |
| Core strength | Crawling sites for SEO audits | Rendering and caching pages as HTML |
| Learning curve | Not published | Not published |
| Integrations/data | Not specified | Not specified |
| Team/seat costs | $199/year per user; each user needs a licence | Seat pricing not published; unlimited domains |
| Support | Free technical support listed | Priority support listed on Pro |
Screaming Frog SEO Spider Choose Screaming Frog SEO Spider if
- Choose it for technical SEO audits and desktop website crawling.
- You need a free option capped at 500 URLs.
- Per-user annual licensing suits your larger crawls.
Prerender Choose Prerender if
- Choose it to render JavaScript-heavy pages for crawlers.
- You need cached HTML for search, social, or AI crawlers.
- A 30-day trial fits your evaluation before $59/month.
02Pricing compared
Screaming Frog has a free download, but its free plan is capped at 500 URLs per crawl. The paid licence is $199 per user per year, or $16.58 per user per month when averaged across the year; it renews yearly, and no monthly billing option is listed. The pricing details list bulk annual rates in GBP for five or more licences.
Prerender has no free plan, but offers a 30-day trial. Its monthly plans start at $59 for 30,000 renders, then rise to $169 for 100,000 and $419 for 500,000. Extra renders cost $2.25, $1.75 or $1.50 per 1,000 on Starter, Growth and Pro, respectively. Enterprise Plus is custom-priced. These prices pay for different jobs, so compare crawl limits with render volume—not just the starting price.
03Features and depth
Screaming Frog SEO Spider is a desktop website crawler for technical SEO audits. Its free plan includes core crawling and audit features, while the paid licence adds advanced features and removes the stated 500-URL limit; the published pricing details do not specify which advanced features. The software has Windows, Mac and Linux versions.
Prerender addresses a narrower problem: it renders JavaScript-heavy pages into HTML and caches those pages for crawlers. The listed uses include search indexing, access for AI crawlers such as ChatGPT, Claude and Perplexity, structured data, and social previews. Its plans vary by render allowance, cache expiration and data retention. Pro adds Search Performance for one domain; Enterprise Plus lists it for five domains.
Neither replaces the other. Screaming Frog crawls a site to surface audit information; Prerender serves rendered pages to crawlers. A site may need one, the other, or both, depending on whether it needs auditing or crawler-facing rendering.
04Ease of use and learning curve
Screaming Frog is downloadable desktop software, with versions listed for Windows, Mac and Linux. The free plan gives teams a way to start crawling without paying, but its 500-URL cap limits the size of each crawl. The published information does not describe setup requirements or the learning curve.
Prerender is aimed at serving rendered pages to crawlers, but the published information does not spell out implementation steps or technical requirements. Its 30-day trial offers a way to evaluate the service before paying; the plan details also set render and cache limits to account for. If setup effort is a deciding factor, check the product documentation for your site's stack before switching or budgeting.
Questions people ask
Can Prerender replace Screaming Frog SEO Spider?
No. Screaming Frog is a desktop crawler for technical SEO audits, while Prerender renders and caches JavaScript-heavy pages for crawlers. They address different needs: auditing a site versus making its pages accessible to search, social and AI crawlers.
Which is cheaper?
Screaming Frog has a free plan capped at 500 URLs per crawl, and its paid licence costs $199 per user yearly. Prerender starts at $59 per month for 30,000 renders and has a 30-day trial, but no free plan. The better-value option depends on the job and volume.
Does Screaming Frog offer a free trial?
The published pricing details list a free Screaming Frog plan, not a separate free trial. It allows crawls of up to 500 URLs and includes core crawling and audit features. Prerender lists a 30-day trial and no free plan.
When should a team use both tools?
Use both when the team needs technical SEO crawls and also needs JavaScript-heavy pages rendered and cached for crawlers. Screaming Frog is listed for site crawling and audits; Prerender is listed for crawler-facing HTML rendering, caching, search, AI and social access.