Cycling through all six. Tap any point to stop.

Measured on six things

Backlnk is a free SEO and AI visibility website: 15 website checks, a full audit as a PDF report, and guides to get found in search and AI answers.

Growth

AI visibility is a real, growing need and Backlnk owns a specific wedge: free, no-signup, evidence-based checks plus an open crawler-access dataset. Category has headroom; monetization path is the open question.

Screenshots

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BACKLNK

About this app

Backlnk is a free educational website about SEO, search visibility and AI visibility. It helps site owners, marketers, developers and SEO specialists understand why a page is or is not found in search engines and AI answers, and what to fix. Free tools: 15 website checks, including an Indexability Checker, AI Crawler Access Checker, llms.txt Generator & Validator, Entity Signal & Schema Checker, Sitemap Hygiene Auditor, Redirect & HTTP Header Checker, Hreflang Validator and Page Speed Test. Each result shows what was measured, when, and with what limits. A free full audit runs every check at once and delivers one designed PDF report by e-mail. Guides: step-by-step articles on technical SEO, on-page SEO and AI visibility, each with a short answer first and sources from official documentation. Research: an open dataset on AI crawler access in the robots.txt files of the Tranco top 10,000 sites (CC BY 4.0). No cost, no card, no sign-up.

Key features

115 free website checks including Indexability, AI Crawler Access, llms.txt, Entity/Schema, Sitemap Hygiene, Redirects/Headers, Hreflang and Page Speed.
2Full audit runs every check at once and delivers one designed PDF report by e-mail plus a private online report — no signup, no card.
3Open CC BY 4.0 dataset on AI crawler access in the robots.txt of the Tranco top 10,000 sites, plus step-by-step guides with official sources.

Target customer profile

Drawn from the product itself, not from a survey.

Demographic

Solo SEO consultants and freelance marketers

Pain points

Paying for multiple premium audit tools just to run quick checks

Primary needs

Free, evidence-based audits they can run before client meetings

Demographic

In-house content and technical SEO specialists

Pain points

Unclear whether AI crawlers are blocked or pages are citable

Primary needs

Clear guidance on AI visibility, schema, and crawler access

Demographic

Small business owners and webmasters

Pain points

Jargon-heavy SEO advice with no practical starting point

Primary needs

Simple step-by-step fixes and an all-in-one free site audit

Scout Review

Written by AI from measured evidence, scored out of 100.

Backlnk is a free, evidence-first SEO and AI-visibility toolkit wrapped in an editorial site. Fifteen named checks — from Indexability and AI Crawler Access to llms.txt validation and Hreflang — run without signup, and a full audit lands as a PDF in your inbox. The site is fast (Lighthouse 99 mobile / 100 desktop), accessible (100/100 automated), and cleanly organized around AI Visibility, Technical SEO and On-Page SEO topic hubs with named author bylines and an original open dataset on AI crawler access. Security is solid but undocumented beyond headers. The strategic bet — that AI visibility is the next front in SEO — is well-timed and the free-plus-open-data wedge is credible. The open question is business model: everything is free, and there is no visible path to revenue.

Measure by measure

Usability

URL field, one click, PDF in your inbox — no signup, no card. 15 clearly named single checks plus a full audit. Guides lead with the short answer. Onboarding is about as frictionless as this category allows.

Design

Clean editorial layout with topic hubs, consistent tool cards and named author bylines. Reads like a real publication, not a thin tool wrapper. Not visually distinctive, but disciplined and coherent.

Speed

Lighthouse mobile 99/100 (LCP 927ms, CLS 0, TBT 5ms) and desktop 100/100. Genuinely fast, well inside the top of the measured band, with no lag complaints in the evidence.

Security

HTTPS enforced with HSTS, frame protection, nosniff, Referrer-Policy, SPF and DMARC all present (9/12 header checks). No CSP or Permissions-Policy, and no published SOC 2, ISO or bug-bounty program.

Accessibility

Lighthouse accessibility 100/100, skip-to-content link, heading-structured long-form guides and readable text-first layout. No published WCAG statement or multi-language support, so it sits high in the band rather than at the ceiling.

Growth

Improvement areas

No published security documentation (SOC 2, ISO, pen-test, bug bounty) and missing CSP / Permissions-Policy headers.
No WCAG conformance statement and no multi-language support for a globally targeted audience.
Entirely free with no visible paid tier — no clear monetization or conversion path from the free tools.

Design & Usability

Backlnk presents as an editorial SEO publication with a tool bench bolted on, and it works. The homepage leads with a URL field and a 'Run free audit' button, then lays out 15 named checks — Indexability, AI Crawler Access, llms.txt, Entity/Schema, Sitemap Hygiene, Redirects/Headers, Hreflang, Page Speed — each with a plain-language verdict line and its own CTA. Topic hubs for AI Visibility, Technical SEO and On-Page SEO organize the guides, and named author bylines plus a dated research piece give it more credibility than the average tool landing page. Usability is the standout: no cost, no card, no sign-up, one click to a PDF report by e-mail. The design is disciplined rather than distinctive — consistent cards, clean typography, no visual signature — but nothing is broken or confusing. For a solo consultant who needs a quick check before a client call, the path from URL to answer is about as short as it gets.

Speed & Security

Speed is the strongest measured dimension. Lighthouse returned 99/100 on mobile with an LCP of 927ms, CLS of 0 and TBT of 5ms, and a perfect 100/100 on desktop. That is a genuinely fast site, not a lucky sample, and there are no lag complaints in the evidence. Security is competent but not exceptional: HTTPS is enforced with HSTS, frame protection, X-Content-Type-Options, Referrer-Policy, SPF and DMARC are all in place (9 of 12 header checks), but CSP and Permissions-Policy are missing and there is no published SOC 2, ISO certification, pen-test summary or bug-bounty program. For a free tool that accepts a URL and emails a report, that is a reasonable posture — it handles no payments and stores no sensitive account data — but anyone evaluating it for agency-scale use should note the absence of formal compliance documentation.

Accessibility & Growth

Accessibility scores well on the measurable half: Lighthouse returned 100/100 on its axe-core audit, the homepage carries a skip-to-content link, and the long-form guides use proper heading structure and readable text-first layouts. What is missing is the declarative half — no published WCAG conformance statement and no multi-language support — so it lands high in the band rather than at the ceiling. Growth is the interesting question. The AI-visibility angle (crawler access, llms.txt, citation in AI answers) is a genuinely new need that classic SEO tools like Screaming Frog and Ahrefs have not fully absorbed, and Backlnk's free, no-signup checks plus an open CC BY 4.0 dataset on AI crawler access across the Tranco top 10,000 give it a credibility wedge paid competitors can't easily copy. The domain is only about half a year old, so traction is minimal — context, not a verdict. The real limit is monetization: the product is entirely free with no visible paid tier, and the growth story depends on converting that audience into something.

Conclusion

If you are a solo consultant, freelancer or in-house SEO who needs a fast, defensible check before a client meeting, Backlnk is worth bookmarking today — the price of entry is a URL. If you need deep crawling, backlink indexes or keyword research at scale, keep Screaming Frog and Ahrefs in the stack; Backlnk is a complement, not a replacement. The AI-visibility focus is the part to watch: crawler access and citation are becoming real line items in SEO briefs, and a free, evidence-based checker with an open dataset behind it is a smart place to start. The product earns its scores on execution; whether it earns a business is the next chapter.

Suggestions for improvement

Publish a security page with a CSP, Permissions-Policy and a stated data-retention policy for the URL and email you collect.
Add a WCAG 2.2 conformance statement and at least one non-English locale for the guides — the audience is global.
Introduce a paid tier (scheduled audits, white-label PDFs, team seats) so the free tools have somewhere to convert.
Surface the open crawler-access dataset as a browsable, filterable table — it is the strongest credibility asset on the site.

How we score

Alternatives comparison

Named competitors, point by point. Nobody paid to appear here or to be left out.

	BACKLNK	Screaming Frog SEO Spider	Ahrefs	aSERP
Price to start	Free — no card, no signup	Free tier up to 500 URLs; paid licence ~£199/yr	Paid only; plans start around $129/mo	Standalone SERP/visibility data product; pricing not stated in evidence
AI visibility / crawler access checks	Yes — dedicated AI Crawler Access Checker, llms.txt validator, open Tranco dataset	Not a focus — technical crawl only	Limited — not AI-answer focused per app description	SERP and visibility data engine; AI-crawler specifics not stated
Depth of technical crawl	Per-URL checks and a full audit of 15 checks — not a deep site-wide crawler	Deep desktop crawler with rich customization	Site Audit crawls at scale plus backlink and keyword indexes	Not a crawler — SERP/visibility data engine
Signup required	No — URL in, PDF out	No account; desktop install required	Yes — paid account required	Not stated in evidence
Backlink and keyword research	No — focused on indexability, crawler access, schema, structure	No — crawler, not a backlink/keyword index	Yes — core strength (backlinks, keywords, audits)	SERP and visibility data; backlink index not stated