Screaming Frog Review (2026): Free, Forever, Found Real Bugs

We downloaded Screaming Frog’s SEO Spider and crawled this site’s own domain — no signup, no email capture, no credit card. The free version caps at 500 URLs per crawl; this site currently sits at around 40, comfortably inside that limit indefinitely.

A “High” severity issue that isn’t actually a bug

The crawl flagged one URL with a 4xx client error at high priority: /cdn-cgi/l/email-protection.

This isn’t a bug in the site. A couple of our own review pages quote real email addresses in plain text (as part of documenting a signup flow), and Cloudflare’s automatic email-obfuscation feature rewrites any email address it finds into a JavaScript-decoded link, pointing at that /cdn-cgi/l/email-protection path. A crawler that doesn’t execute JavaScript — like Screaming Frog, and like some real bots — follows that link literally and gets a 4xx, because the path only resolves correctly in a real browser. Real visitors never see this. We’re leaving it as-is: fixing it would mean either exposing the raw email addresses to scrapers or restructuring how we quote them, and the downside (an occasional 4xx on a Cloudflare system path) is smaller than the upside (the emails stay protected from harvesting).

Two real bugs it found that our own script missed

We already run npm run check:content on every article before publishing — a script we built after an earlier Frase audit, checking title length (30-60 characters) and meta description length on every review, comparison, and guide. It only covers content-collection pages, though, not this site’s static pages (home, guides index, disclosure). Screaming Frog crawls everything, and found two real issues in that gap:

• The /guides/ index page’s title was just “Guides” — 6 characters, far under any reasonable minimum, and a page our own script never checks because it’s a static .astro page, not a content collection entry.
• The Make review’s title was too wide for Google’s actual SERP display, even though it passed our character-count check. Google truncates titles by pixel width, not character count — a title full of wide capital letters can be too long in pixels while still being within a “safe” character range. Ours was.

Both fixed the same day: the guides index title now reads “Solo Stack Lab — Guides & Pipelines,” and the Make review’s title dropped a few words to bring it back under the pixel limit. Neither would have been caught by our own tooling — a genuinely useful gap to have closed.

What else it flagged

The rest of the findings were lower-priority opportunities rather than real problems worth individually detailing here: several images over 100kB, some low-content pages (mostly index/listing pages, expected), missing security headers (HSTS, CSP, X-Frame-Options — a Cloudflare Pages configuration question, not a code bug), and some alt-text/heading-structure nitpicks. All logged for a future pass; none urgent.

Bottom line

No affiliate program exists for Screaming Frog as far as we could find on their official site, so there’s no commission angle here — this recommendation is purely because the tool is useful. For a site this size, the free tier is a permanent, no-cost technical audit option: no trial to expire, no card to enter, and on this run it caught two real title bugs that a purpose-built script we wrote ourselves didn’t. Worth running periodically as the site grows, especially before publishing anything new.