The cloud alternative to Screaming Frog
Screaming Frog is a brilliant desktop crawler. CrawlX runs the same depth of technical audit in the cloud — no install, no memory ceiling — then ranks every issue by impact and ships the fix as a pull request.
Screaming Frog's SEO Spider has been the desktop standard for technical crawling for over a decade, and it's genuinely excellent. CrawlX takes a different shape: it runs in the cloud, so there's no install and no local memory ceiling on big sites; it ranks issues by estimated impact instead of handing you a flat spreadsheet; and it can draft the fix as a GitHub pull request. Here's an honest look at where each tool wins.
The verdict: CrawlX as a Screaming Frog alternative
CrawlX is the strongest cloud-based Screaming Frog alternative for teams that want technical-SEO depth without the desktop. You get the same core crawl — 65+ checks and full JavaScript rendering — but it runs in the browser with no memory ceiling, ranks every issue by estimated impact, and can ship the fix as a GitHub pull request. Screaming Frog still wins if you need unlimited local crawling on a flat annual licence or its mature log-file analyser.
CrawlX vs Screaming Frog
| Capability | CrawlX | Screaming Frog |
|---|---|---|
| Runs in the cloud (no install) | Cloud | Desktop app |
| Memory ceiling on large sites | None — cloud | Bound by your RAM |
| Free tier | 500 URLs | 500 URLs |
| JavaScript rendering | Yes | Yes |
| Search Console / GA4 / PSI | Yes | Yes |
| Real-time streaming results | Yes | Partial |
| Issues ranked by estimated impact | Yes | Manual |
| Bring-your-own-key AI analysis | Yes | Yes |
| AI fix suggestions as pull requests | Yes (BYOK) | No |
| AI-crawler readiness (GPTBot, llms.txt) | Yes | No |
| Scheduled crawls | Built-in, cloud | On your machine |
| Team collaboration & roles | Yes (paid) | Single desktop |
| White-label client reports | Yes (paid) | No |
| Log-file analysis | On roadmap | Mature (separate tool) |
| Track record & community | Newer | 10+ yrs, large community |
Where Screaming Frog still wins
We'd rather be honest than oversell. Screaming Frog is excellent at these:
- Crawl unlimited URLs on your own machine for a flat annual licence — no per-URL or per-seat cost.
- A mature, battle-tested log-file analyser for crawl-budget work.
- Over a decade of releases, a huge community, and deep, granular configuration.
- Everything runs locally — nothing leaves your machine, which some audits require.
Switch to CrawlX if…
- You want to crawl from anywhere with no install and no memory limits on large sites.
- You'd rather see issues ranked by impact than triage a flat spreadsheet yourself.
- You want fixes drafted as pull requests, not just a list of problems.
- You care whether GPTBot, ClaudeBot, and Perplexity can read your site — CrawlX checks AI-crawler access and llms.txt on every crawl.
- You collaborate with a team or send clients white-label reports.
Stick with Screaming Frog if…
- You need to crawl very large sites entirely on your own hardware for a flat licence cost.
- You rely on Screaming Frog's mature log-file analyser today.
- Local-only processing is a hard requirement for your audits.
What each costs
CrawlX is free for 500 URLs, then from $29/mo ($19/mo billed annually). Screaming Frog: Free for 500 URLs, then £199/year ($279) for unlimited-URL crawling on your own machine.
Moving from Screaming Frog to CrawlX
- Sign up free and add your site by URL — there's no install, licence key, or Java runtime to manage.
- Run your first cloud crawl (up to 500 URLs free) and compare the issue list against your last Screaming Frog export.
- Connect Google Search Console and GA4 so issues are ranked by real impact, not just severity.
- Switch on scheduled crawls so audits run in the cloud instead of tying up your machine.
Common questions
Is CrawlX a good Screaming Frog alternative?
Yes — CrawlX covers the same core technical-SEO crawl (65+ checks, JavaScript rendering, Search Console and GA4 integrations) but runs in the cloud with no install or memory ceiling, ranks issues by estimated impact, and can ship fixes as pull requests. Screaming Frog remains a strong choice if you want unlimited local crawling for a flat annual licence.
How much does CrawlX cost compared to Screaming Frog?
CrawlX is free for 500 URLs, then paid plans start at $29/month ($19/month billed annually). Screaming Frog is free for 500 URLs, then £199/year (about $279) for unlimited URLs. CrawlX is a subscription that adds cloud crawling, AI fixes, team seats and white-label reports; Screaming Frog is an annual desktop licence.
Can CrawlX crawl JavaScript sites like Screaming Frog?
Yes. CrawlX renders pages with headless Chromium and crawls the rendered DOM, so single-page apps and client-rendered content are covered — the same as Screaming Frog's rendering mode.
Do I have to install anything to use CrawlX?
No. CrawlX is entirely cloud-based — you run crawls from the browser with no desktop install, and large crawls aren't limited by your computer's memory.
Is there a free Screaming Frog alternative?
Yes. CrawlX is free for 500 URLs per crawl with no time limit and no credit card — the same free URL allowance as Screaming Frog's free tier, but it runs in the cloud, ranks issues by estimated impact, and can draft fixes as pull requests. Paid plans start at $29/month when you outgrow 500 URLs.
Is there an online, web-based Screaming Frog alternative with nothing to download?
Yes — that is exactly what CrawlX is. Screaming Frog is a desktop app you download, update, and run on Java; CrawlX runs entirely in the browser, so there is nothing to install, no runtime to manage, and no updates. You start a crawl from any device and the work happens in the cloud.
Is there a Screaming Frog alternative for Mac?
Screaming Frog does offer a macOS build, but it is a desktop app that installs locally and is limited by your Mac's memory on large crawls. CrawlX runs in any browser on macOS — as well as Windows, Linux, and ChromeOS — with nothing to install, and because crawls run in the cloud they are not bound by your machine's RAM.
Can CrawlX crawl large sites that Screaming Frog runs out of memory on?
Yes. Screaming Frog crawls in your computer's memory, so very large sites can exhaust your RAM unless you switch to database storage and tune settings. CrawlX crawls in the cloud, so large sites are not limited by your local hardware — you choose a plan by URL volume instead of buying more memory.
Does CrawlX do log-file analysis like Screaming Frog?
Not yet — Screaming Frog's Log File Analyser is a mature, dedicated tool and remains a genuine strength. Log-file analysis is on the CrawlX roadmap. Today CrawlX focuses on cloud crawling, impact-ranked issues, Core Web Vitals, and fixes drafted as pull requests.
Does Screaming Frog check whether AI crawlers like GPTBot can read my site?
Not as a dedicated check. CrawlX audits AI-crawler readiness on every crawl: whether GPTBot (ChatGPT), ClaudeBot (Claude), PerplexityBot, and Google-Extended are allowed in robots.txt, whether your llms.txt exists and parses, and which templates only render with JavaScript that AI crawlers don't run. As search shifts toward AI answers, this is the layer that decides whether you can be cited at all.
CrawlX vs other tools
See it on your own site
Your first cloud crawl runs free — 500 URLs, no credit card, no install.
Screaming Frog details verified 2026-06-20.