Screaming Frog SEO Spider vs Seolyzer (2026): which should you pick?
As of Oct 23, 2026, Screaming Frog SEO Spider grades higher than Seolyzer: 2.4 against 2.0 out of 4.0.
Checked Oct 17, 2026 and Oct 23, 2026 · graded Oct 17, 2026 and Oct 23, 2026 by ToolGPA
Screaming Frog SEO Spider grades higher on value for money and the free plan. Seolyzer grades higher on features and platforms. They get the same grade on ease of use.
Price, platforms and features side by side. The table says where each price was read and when.
Screaming Frog SEO Spider
Desktop website crawler for technical SEO audits
Free plan · from $279/yr
Which one is for you
Pick Screaming Frog SEO Spider if
- Fits if you're a technical SEO who audits large sites from your own computer
- Works for sites under 500 URLs, which the free version crawls with no time limit
Look elsewhere if
- Skip it if you want keyword research, rank tracking or backlinks, as it only crawls
- Not for you if you'd rather not learn technical SEO terms, XPath or regex
- Tight if your computer is short on memory or storage, since crawl size depends on it, and there's no web or phone version
- Pricey if a team needs it: licences are $279 per user a year, so two people need two
- Watch out: the free version can't save crawls, render JavaScript, schedule audits or connect to Google data
Pick Seolyzer if
- Fits if you run a large French or European site and want Googlebot's activity live
- Works for data teams pulling SEO data into their own dashboards
Look elsewhere if
- Not for you if you want a price before a demo, as none is published
- Skip it if you're buying for yourself, since its terms cover business customers only
- Watch out: subscriptions renew on their own and must be cancelled by registered letter a month ahead
- Tight if you can't connect your server logs, which the log analysis needs
How we grade them
| 2.4GPAScreaming Frog SEO SpiderFair | 2.0GPASeolyzerFair | |
|---|---|---|
| Value for money | BGraded against its alternatives. A licence is $279 a year per user, about $23.25 a month, with no crawl limit and JavaScript rendering. Only Sitebulb Lite is cheaper, and it stops at 10,000 URLs; Semrush and Ahrefs cost about five times as much. | CNo price is published. The old pricing page is gone and the site offers only a demo booking, so the cost comes out on a sales call, in euros, before tax. |
| Free plan and trial | BA free version with no sign-up crawls up to 500 URLs with the core audits, for as long as you like, so small sites can live on it. It can't save crawls, change settings, render JavaScript or pull in Google data. | FNothing free on record: no free plan and no trial, just a demo. |
| Features | CIt does the crawling job fully: 300+ issues, JavaScript rendering, custom extraction, scheduling, crawl comparison and sitemaps. But that's one part of SEO, with no keyword research, rank tracking or backlink index. | BCrawls sites of several million pages, shows Googlebot's crawl in real time from your logs, merges the two to find orphan and ignored pages, and serves raw crawl, log, Search Console and CrUX data through an API. The listing shows no gap in the core job. |
| Ease of use | CNo rating on record. Enter a URL and it crawls, but reading the results takes technical SEO knowledge, and custom extraction runs on XPath, CSS Path or regex. | CNo rating on record. The log reports stay empty until your server logs are connected, and then there are page categories to build. |
| Platforms and integrations | CA program for Windows, Mac and Linux, linked to Google Analytics, Search Console, PageSpeed Insights, OpenAI, Gemini, Looker Studio and Sheets. Computers only, with no web or phone version. | BWeb only. It connects to Search Console and works with BigQuery and Power BI through an API with no limit on calls or rows. |
| Best for | technical site audits on your own computer | live Googlebot activity from server logs |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Screaming Frog SEO Spider and Seolyzer. How we grade
Where they differ
- Screaming Frog SEO Spider also covers reports.
- Seolyzer also covers internal linking and log file analysis.
In commonSite audit
At a glance
| Screaming Frog SEO Spider | Seolyzer | |
|---|---|---|
| Pricing | Free plan | Paid |
| Starts at | $279 per user / year | Not published |
| Free plan | Free version, no sign-up: crawls up to 500 URLs at a time with the core audits, but cannot save crawls, change the crawl configuration, render JavaScript or use integrations. | None |
| Free trial | None listed | None listed |
| Web | ||
| macOS | ||
| Windows | ||
| Linux | ||
| Made by | Screaming Frog Ltd | Seolyzer SAS |
| Price read from | screamingfrog.co.uk | Not confirmed |
| Checked | Oct 17, 2026 | Oct 23, 2026 |
Worth knowing
Screaming Frog SEO Spider
- Licences are per user and last one year; two people need two licences.
- It is a desktop app, so crawl size depends on the computer's memory and storage.
- The free version cannot save crawls, render JavaScript, schedule audits or connect to Google data.
Seolyzer
- No prices are published: the old pricing page no longer exists and the site offers only a demo booking.
- Its terms of sale cover business customers only and say prices are set in euros, excluding tax.
- Subscriptions renew automatically and must be cancelled by registered letter at least one month before the renewal date.
- Log analysis needs your server log files to be connected to the service.
Key features
Screaming Frog SEO Spider
- Technical SEO audit
- Find broken links, server errors, redirect chains, missing or duplicate titles and descriptions, and directives such as noindex and canonicals.
- JavaScript rendering
- With a licence, render pages in a built-in Chromium to crawl sites built with frameworks such as React, Angular and Vue.
- Custom extraction and search
- Pull any data from page HTML with XPath, CSS Path or regex, and search source code across a whole crawl (licence only).
- Google and AI integrations
- Pull Google Analytics, Search Console and PageSpeed Insights data into a crawl, or run pages through OpenAI and Gemini (licence only).
- Scheduling and crawl comparison
- Schedule crawls with exports to Google Sheets or run them from the command line, and compare crawls or staging against production.
- Site visualisations and sitemaps
- See site structure as force-directed and tree diagrams, and generate XML and image sitemaps from a crawl.
Seolyzer
- SEO crawler
- Crawls sites of several million pages for indexability, status codes, titles and meta tags, depth, response time, sitemaps, orphan pages and internal PageRank.
- Real-time log analysis
- Shows live which pages Googlebot crawls most, mobile against desktop bots, server response times, cached pages, bad bots and visits from Google Discover and News.
- Cross analysis
- Merges crawl and log data to find orphan, ignored and inactive pages, redirects and errors Googlebot does not follow, and sitemap crawl rates.
- Page categorization
- Group URLs into multi-level categories that apply live and to past data, to see which page types bots favor.
- API
- Raw and aggregated crawl, log, Search Console and CrUX data in JSON, with no limit on calls or rows, and BigQuery and Power BI compatible.
- Unlimited sharing
- Share project data with your team or outside providers without a cap on users and at no extra cost.
Plans
Screaming Frog SEO Spider
Free$0
Up to 500 URLs per crawl, broken links, redirects, metadata, duplicates, XML sitemaps and site visualisations.
Paid licence$279
per user / year, for 1 to 4 licences
No crawl limit beyond memory and storage, saved crawls, scheduling, JavaScript rendering, crawl comparison, integrations and support. £199 in pounds.
Seolyzer
Pricing could not be confirmed. See seolyzer.io.
Ways to pay less
Screaming Frog SEO Spider
- Other savings
Volume pricing from 5 licences
Buying 5 to 9 licences at once costs $265 each a year, 10 to 19 cost $249 each, and 20 or more cost $235 each, against $279 for 1 to 4.
Seolyzer
No public discounts listed.
Common questions
Which is cheaper, Screaming Frog SEO Spider or Seolyzer?
As of Oct 23, 2026, Screaming Frog SEO Spider starts at $279 per user / year, and Seolyzer has no price we could confirm.
Which has a free plan, Screaming Frog SEO Spider or Seolyzer?
As of Oct 23, 2026, only Screaming Frog SEO Spider has a free plan. Seolyzer does not.
Which platforms do Screaming Frog SEO Spider and Seolyzer run on?
As of Oct 23, 2026, only Screaming Frog SEO Spider lists macOS, Windows and Linux apps and only Seolyzer lists a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.