SEO and QA audits
backed by evidence.
SignalCrawler crawls your site and tests it in a real browser the way a tester would: many screens, longer texts, missing images, menus and forms. Every problem is confirmed before it reaches the report, with a screenshot, its reach across page templates and a concrete fix. Then it hands you a bug list for your developers.
- 3 free scans
- No subscription
- Report in minutes
Start from the problem you have
No SEO knowledge needed: the report explains each problem in plain words and says what to do first.
My site barely shows up in Google
Pages Google cannot index, broken links, unfinished titles and descriptions: each with the pages affected and the fix.
It looks wrong on phones
Checked in a real browser at ten screen widths, with screenshots and the exact CSS rule behind a broken layout.
Pages load slowly
Which files hold the page back and how much time each fix saves, next to what real visitors experience.
Traffic dropped
Attach your Search Console export: problems are ranked by the search clicks they put at risk.
I have my own question
Write what worries you before the audit. The report answers each point with what it found, or says plainly what it could not check.
I need to brief a developer
An action plan with proof, effort and owners, and a bug list table with status and screenshots that you download as a ZIP or CSV.
The clicking and resizing a QA engineer does, in minutes
A tester opens the site on a few devices, types long names, removes an image and looks at what breaks. The audit does that on every key page template and keeps the proof.
Stretches the layout
Every name and title twice as long, a 35-letter word with no spaces, images and whole blocks removed, looser text spacing. It reports what gets cut off, overlaps or overflows.
Ten screen widths
From 320 to 1440 px, on phones, tablets and laptops: elements that stick out of their boxes, run off the screen or overlap, and labels that wrap.
Opens and tries things
Menus, tabs, cookie dialogs and slide-in panels are opened. A deep scan also clicks buttons and submits forms empty to see whether anything answers.
Shows the proof
Findings come with screenshots that outline the problem in red, viewable full screen, and go into the bug list you can hand to developers.
Standard scans only look at the pages: they never click or type. A deep scan also tries menus, buttons and empty forms, and blocks any request that would change data. It does not log in, buy or judge your copy, so it is a fast first pass, not a replacement for a person who knows your product.
Made for the people who ship and own websites
Site owners and marketers
You want to know what is wrong with your site and what to fix first, without reading a technical report. Start with the problem you have.
Developers and QA teams
A first pass before a release or a handover: layout on many screens, broken interactions and technical SEO, with a bug list to work from.
Agencies and freelancers
Audit a client site before a pitch or after a redesign, then send a read-only link or the ZIP with the table and the screenshots. No manual clicking through 20 devices.
Sites about to launch
Audit staging behind a password. Blockers such as noindex become a pre-launch checklist instead of noise.
Four layers, one report
Code measures, the browser confirms, AI explains. Nothing in the report is a guess.
- 01
Crawl like a search engine
Host variants, robots.txt and sitemaps first, then every reachable page, grouped by template.
- 02
Test like a person would
Representative pages open in Chrome on desktop and phones. The browser stretches the layout with longer texts, missing images and ten screen widths, and a deep scan also opens menus and tries buttons and forms.
- 03
Measure, do not guess
More than 150 deterministic checks produce each finding, with the affected URLs, the evidence and a screenshot with the problem outlined.
- 04
Review and plan
AI removes false signals, groups findings by root cause and turns them into an ordered plan of fixes.
From findings to a plan your team can ship
Every audit ends with work that can be assigned, not a wall of warnings.
Root causes and an action plan
Findings that share one fix become one task, with priority, owner, effort and a way to validate it. Download a bug list (ID, status, description, pages, fix, screenshot) as a ZIP or CSV for your tracker.
Page-by-page rewrites
Suggested titles, descriptions and H1s for key pages and templates, measured in pixels the way search results cut them.
Site profile and trust
What the site is, how it earns, whether the topic is YMYL, and which trust signals a visitor or a quality rater would miss.
Speed, measured two ways
Lighthouse on every key template, merged into site-level wins with the savings in milliseconds and kilobytes, next to Core Web Vitals from real Chrome users over the last 28 days.
Evidence on every finding
Status codes, HTML excerpts, screenshots at the exact viewport with the problem outlined in red, and the list of affected URLs, grouped by template so one fix covers them all.
The problems that actually cost traffic
Indexability
robots.txt and sitemap conflicts, noindex on pages that should rank, soft 404s and broken routes.
Technical SEO
Canonical chains, redirects, HTTPS and host variants, hreflang, pagination and trailing-slash duplicates.
On-page and snippets
Titles and descriptions by pixel width, H1 and title alignment, duplicates, Open Graph and structured data.
Mobile layout and QA
Horizontal scrolling, overlaps at ten widths, longer texts and missing images, small tap targets and text, menus and forms.
Speed
Lighthouse on every key template and Core Web Vitals from real Chrome users, folded into the few fixes that save the most time.
Accessibility
WCAG 2.1 A and AA checks with axe-core, disabled zoom, missing landmarks, images without alt text.
Trust signals
About, contact and legal pages, organization data, official profiles, affiliate link labelling.
AI search readiness
Which AI search and training crawlers your robots.txt allows, and whether content works without JavaScript.
Fewer findings. Each one proven.
Duplicate title: 89
H1 missing: 23
Score: 63
Hundreds of warnings, no priorities, no way to tell which ones are real or why they happen.
The category links built by the theme lead to a route that does not exist, so visitors land on the homepage and the category section cannot rank. One template fix repairs every language version.
Pay per scan. No subscription.
Your first 3 scans are free. Scans never expire.
- Up to 500 URLs crawled per scan
- 12 pages checked in a real browser, desktop and mobile
- Technical SEO, indexability, mobile, performance and accessibility checks
- Manual-QA checks: ten screen widths, longer texts, missing images, menus and dialogs
- Evidence and affected URLs for every finding
- Lighthouse on 3 key templates and real-user Core Web Vitals
- Action plan with root causes, owners and effort
- Suggested titles and descriptions for key pages
- Site profile with trust signals and AI crawler access
- Screenshots of key pages on 6 phones, tablets and desktops
- Bug list as ZIP or CSV with screenshots, PDF export, plain-text copy of any section
What does one scan include?
A full audit of one website: up to 500 URLs crawled, 12 representative pages tested in a real browser, an action plan, a bug list, page-by-page rewrites and a PDF report. A deep scan covers up to 2,000 URLs, also tries menus, buttons and empty forms, and uses 2 scans.
Who is it for?
Site owners and marketers who want to know what to fix first, developers and QA teams who want a first pass before a release, agencies that audit client sites, and teams about to launch a site. You do not need SEO or testing knowledge to read the report.
Does it replace a manual tester?
It does the repetitive part: trying key pages on many screen widths, with longer texts and missing images, and opening menus and dialogs. It does not log in, buy anything, follow multi-step flows or judge whether your copy is right. Use it as a fast first pass and a source of proof, and keep a person for the flows that matter most.
Will it click buttons and submit forms on my site?
A standard scan only looks: it never clicks or types. A deep scan opens menus and dialogs, clicks buttons that do not send or buy anything, and submits forms empty. Any request that would change data is blocked before it leaves the browser, and it never logs in.
What is in the free scans?
3 free scans, each the same audit on a smaller slice of the site: up to 50 URLs and 3 browser pages. You get them as soon as you sign up; no payment details are needed.
How long does an audit take?
Usually a few minutes. The time depends on the size of the site and how fast it responds; a deep scan of a large site takes longer. You can close the tab and come back to the finished report.
What does the AI do, and what does it not do?
The AI never creates findings or numbers. Every finding comes from a deterministic check with evidence. The AI filters out false signals, may adjust a severity by one level with a stated reason, groups findings that share a root cause and writes the explanations and rewrites.
What is in the report?
A health score by area, confirmed findings with evidence, screenshots that outline the problem and affected URLs, an action plan ordered by priority with owners and effort, root causes, a speed report, screenshots of key pages on phones, tablets and desktops, suggested titles and descriptions for key pages, a site profile with trust signals, and a PDF. You can download a bug list as a ZIP (table and screenshots) or CSV, mark each finding open, in progress or fixed, and copy any section as plain text to paste into a chat or a ticket.
Can I not just run Lighthouse myself?
You can, one page at a time, and read the raw list. We run it on the homepage and each key template, merge the results into site-level fixes with the measured savings and the files behind them, put them next to what real Chrome users experience over 28 days, and explain it in plain language with steps for your platform.
How is this different from a free SEO checker?
Checkers list every warning they can find. We confirm problems in a real browser, group them by page template and root cause, attach evidence and explain what to fix first. Fewer findings, each one reliable.
Do I need to own the website?
No. We audit publicly available pages the way a search engine sees them. Staging sites behind HTTP authentication can be audited by adding the credentials in the audit settings.
Will the crawler slow down my site?
No. SignalCrawlerBot identifies itself, respects robots.txt, keeps only a few requests in flight and stops at the scan limit. The crawler page explains how to recognise or block it.
How do I pay?
In cryptocurrency through NOWPayments. Pick a package, choose a coin, and the scans are added as soon as the network confirms the payment. Scans never expire and there is no subscription.
What if an audit fails?
If a scan fails on our side, it goes back to your balance automatically.
Who can see my reports?
Only your account, unless you make a share link for a report: then anyone who has that link can read that one report (not change it) until you stop sharing. Deleting an audit removes its report, its screenshots and its link.
See what is holding your site back.
A free scan takes a few minutes. No payment details needed.