No free check looked at security headers
danluu.com is missing all six headers and allbirds.com two, and none of the free versions mentioned it. In Insight those checks start with the Complete scan on the Growth plan.
SEO audit & report
WooRank alternatives, tested on two real sites
We tested seven free versions on two sites with known defects.
Two starting points
InsightQuality audit
Findings, tasks and a retest
WooRank
SEO report
A specialist scope and workflow
Tests from 29 September and 1 October 2026
What each free check found
Known defects each tool reported in its free version. WooRank is missing: its free preview shows 2 of 79 checks.
| CometWeb Insight | SO SEOptimer | SB Seobility | |
|---|---|---|---|
danluu.comBare engineering blog with obvious problems 9 defects | |||
| No <title> | Found | Found | Found |
| No H1 | Found | Found | Found |
| No meta description | Found | Found | Found |
| No canonical | Found | Found | Missed |
| No lang attribute | Found | Found | Found |
| http:// not redirected to https:// | Found | Found | Found |
| No favicon | Found | Found | Found |
| None of six security headers | Missed | Missed | Missed |
| robots.txt is an unrendered template | Found | Missed | Missed |
| Score: danluu.com | 8/9 | 7/9 | 6/9 |
allbirds.comWell-built Shopify store; its 12 correct items catch false alarms 8 defects | |||
| Two-hop redirect chain | Found | Found | Missed |
| No Referrer-Policy | Missed | Missed | Missed |
| No Permissions-Policy | Missed | Missed | Missed |
| CSP only upgrades requests | Missed | Missed | Missed |
| HSTS of about 91 days | Missed | Missed | Missed |
| No Cache-Control on the page | Found | Partly (counted as found) | Missed |
| No JSON-LD | Found | Missed | Partly (counted as found) |
| 714 KB HTML document | Found | Found | Found |
| Score: allbirds.com | 4/8 | 3/8 | 2/8 |
| False alarms on allbirds.com | 0 | 1 | 1 |
What the test showed
Two tools read an empty alt as a missing one
SEOptimer and Seobility reported 13–14 images on allbirds.com without an alt attribute. All 41 images have one; 13 are empty, which is allowed for decoration. Insight reported the same 13 as empty alts that look informative, which is a question worth asking.
Free limits are tighter than they look
SEOptimer showed its daily free limit on our second report. Seobility allows three checks a day without an account. WooRank without an account showed a stored review of danluu.com dated 26 October 2023.
Prices on 29 September 2026
The seven tools at a glance
Monthly billing in USD, prices from 29 September 2026. “Docs only” means the tool needs an account or a trial, so we describe it from the vendor’s own pages.
| Tool | Free option | Monthly price | Basis |
|---|---|---|---|
| SO SEOptimer Agencies that want an audit form that brings in leads | Report without account, about 2 a day | from $29 white-label $39 | Tested |
| CometWeb Insight Teams fixing SEO, performance and accessibility from one list | Free plan: 1 Standard audit/mo | from $39 white-label $156 | Tested (ours) |
| SG SiteGuru Site owners who prefer a weekly to-do list to a score | 6-week trial | from $49 white-label included | Docs only |
| SB Seobility Small sites that need a free plan with a real crawl | 3 checks a day; Basic plan | from $69.90 white-label $109.90 | Tested |
| WR WooRank The tool you are replacing, for reference | Stored review preview; 3-day trial for $1 | from $89.99 white-label $199.99 | reference |
| SC Sitechecker Teams watching many client sites | 14 days of full access | from $99 white-label $449 | Docs only |
| SR SE Ranking Agencies that also track rankings and keywords | Limited checker; 14-day trial | from $129 white-label $198 | Docs only |
| IN Insites Agency sales teams that audit prospects in volume | Demo only | not publishedwhite-label included | Docs only |
Insites does not publish prices. SE Ranking: Core plus the Agency Pack add-on, which is billed annually only. WooRank: white-label on Premium, 3-day trial with a $1 card hold.
Tool by tool
What we know about each tool
We ran three of them ourselves. The other four need an account or a trial, so we describe them from the vendor’s own pages.
Tested on both sites3
CometWeb Insight
Tested (ours)Teams fixing SEO, performance and accessibility from one list
from $39white-label $156
What we found
8 of 9 on danluu.com and 4 of 8 on allbirds.com with no false alarm, using the Standard scan from the free plan. It was the only tool to name the full allbirds.com redirect path, http → https → www. Security headers are outside the free scan, and it added some noise of its own, such as a PWA suggestion for a blog.
Pricing
Free plan with Quick scans and one Standard audit a month. Growth $39 a month, Studio $69, Scale $156; annual billing costs ten months. Security checks and the OWASP ZAP scan start on Growth; white-label reports on Scale.
Choose it over WooRank if: One backlog should cover SEO, performance and accessibility, and you want to rerun the same checks after a fix.
SO
SEOptimer
TestedAgencies that want an audit form that brings in leads
from $29white-label $39
What we found
A full one-page report without an account, graded C+ on danluu.com. It caught 7 of 9 defects there, including the HTTP redirect and the favicon, and on allbirds.com it spotted the redirect chain through PageSpeed Insights. It missed every security header and read the broken robots.txt as fine. Six of its 20 danluu.com recommendations were about social profiles, a Facebook pixel and local business schema, which do not apply to a blog.
Pricing
DIY $29 a month, White Label $39, Lead Generation $59, exactly 25% less on annual billing; 14-day trial. The embeddable audit form is on the $59 plan only.
Choose it over WooRank if: You mainly need branded one-page reports and a lead form on your site, for less than WooRank Premium.
SB
Seobility
TestedSmall sites that need a free plan with a real crawl
from $69.90white-label $109.90
What we found
6 of 9 on danluu.com, with a to-do list sorted by priority, plus a missing doctype we had not listed. It rated the canonical check as passed on a page that has none. On allbirds.com it flagged only the heavy HTML, noted without flagging it that the page has no structured data, and called the redirects fine even when we started from http://allbirds.com.
Pricing
A free Basic plan with 1 project and 100 pages per crawl. Premium $69.90 a month, Professional $109.90, Agency $239.90 (shown as €59.90, €99.90 and €209.90 by default, excluding VAT).
Note
The pricing table puts white-label on Professional, while the checker page says Premium can export branded PDFs; the vendor’s own pages disagree.
Choose it over WooRank if: You look after a few small sites and want a free plan that crawls more than one page.
Described from vendor pages4
SR
SE Ranking
Docs onlyAgencies that also track rankings and keywords
from $129white-label $198
Why it was not tested
The full website audit needs the 14-day trial. A free SEO Checker with a daily counter exists.
Pricing
Core $129 a month, Growth $279; trial without a card. White-label reports and a lead generator come with the Agency Pack, $69 a month and billed annually only.
Choose it over WooRank if: You want site audits, rank tracking and keyword research in one subscription.
SC
Sitechecker
Docs onlyTeams watching many client sites
from $99white-label $449
Why it was not tested
Two tries at its free checker returned no report without an account.
Pricing
Basic $99 a month, Standard $249, Premium $449; 14 days of full access and a 48-hour refund window. White-label from Premium.
Choose it over WooRank if: You monitor dozens of sites and want an alert when one breaks.
SG
SiteGuru
Docs onlySite owners who prefer a weekly to-do list to a score
from $49white-label $49
Why it was not tested
It needs a trial.
Pricing
Small $49 a month, Medium $99, Large $199, 20% less on annual billing; a 6-week trial without a card. White-label on every plan, up to 5,000 pages per site.
Choose it over WooRank if: You want the cheapest white-label report and a short task list.
IN
Insites
Docs onlyAgency sales teams that audit prospects in volume
from not publishedwhite-label included
Why it was not tested
There is no free plan or trial, only a demo and a free AI-visibility audit.
Pricing
Not published; annual contracts priced by usage. White-label and unlimited lead widgets are included.
Choose it over WooRank if: Your sales team audits prospects every week and you buy on annual contracts anyway.
Match the tool to the job
Which alternative fits your job
Seven common situations and the tool that fits each one best, based on the test and the vendors’ own plans.
- You want leads from your agency siteSOSEOptimerINInsites SEOptimer’s Lead Generation plan, or Insites on an annual contract
- You need a free plan that crawlsSBSeobilityCometWeb Insight Seobility (100 pages) or Insight (20 pages, one Standard audit a month)
- You also track rankingsSRSE Ranking SE Ranking
- You watch many client sitesSCSitechecker Sitechecker
- You want the cheapest white-label reportSGSiteGuruSOSEOptimer SiteGuru or SEOptimer
- Performance and accessibility belong in the same backlog as SEOCometWeb Insight Insight
- Your team already runs WooRank Projects and white-label on PremiumWRWooRank Stay with WooRank
We tested SEOptimer and Seobility without accounts on 29 September 2026, on two sites with defects recorded beforehand. I ran Insight from my own account at the Standard level; the table shows reruns from 1 October, after fixes made during the test. The full methodology keeps the earlier results and false alarms. Prices come from vendor pricing pages checked on 29 September. See the raw results and sources
The practical differences
Where they really differ
Three differences worth considering before you change tools.
Audit scope
Insight
More areas and a shared backlog, so more signals to manage.
WooRank
Reviews gives a quick result, while Site Crawl checks technical SEO across many pages.
Work after the report
Insight
Tasks and run history live in the product.
WooRank
WooRank suggests SEO actions and lets you track a score; its team workflow has a different scope.
Technical SEO depth
Insight
Insight crawl supports diagnosis, but does not replace a dedicated SEO crawler.
WooRank
Site Crawl checks many pages and prioritizes issues. Scope and scheduling depend on the plan.
Capabilities side by side
Capability scope
This compares typical uses, not every plan, setting or add-on.
Showing 9 of 9 areas
| Area | CometWeb Insight | WooRank |
|---|---|---|
| Light SEO checklist | Partial | Strong |
| Quick client-facing report | Partial | Strong |
| Multi-area technical audit | Strong | Basic |
| Shared priority backlog | Strong | Partial |
| Run history | Strong | Strong |
| Before-and-after verification | Strong | Partial |
| Deep technical SEO crawl | Basic | Strong |
| Automated accessibility checks | Strong | Partial |
| Public security signals | Strong | Partial |
These labels describe capability scope, not an overall product rating. Availability depends on the plan and configuration.
Check the basis of this comparison
Scope and sources
Public material behind this comparison.
Reviewed: September 2026
How we prepare comparisonsProducts compared
- Insight
- CometWeb Insight: public product page and pricing checked in September 2026; features vary by plan
- WooRank
- WooRank Reviews, Projects and Site Crawl: public docs checked in September 2026
Describes typical scope from official docs and public product pages. It is not a partnership, scored ranking, or affiliate piece. We do not use third-party reviews or affiliate content as a primary source.
Product names identify the tools being compared. Trademarks belong to their owners. CometWeb is not affiliated with WooRank.
For one page at a time, yes. In our test SEOptimer gave a full report without an account until its daily limit on the second report, and Seobility allows three checks a day. For a whole-site crawl, Seobility’s free plan covers 100 pages and Insight’s Free plan 20 pages with one Standard audit a month. The caveat: in Insight white-label starts at the Scale plan, so SEOptimer or SiteGuru may fit sales reporting better.
SiteGuru includes white-label on every plan from $49 a month, and SEOptimer from its $39 plan. WooRank puts it on Premium at $199.99, Insight on Scale at $156.
None did in our test. Sitechecker’s plan table lists HSTS and CSP checks, but we could not run it without an account; in Insight the security module starts on the Growth plan.
Yes. Site Crawl checks many pages and prioritizes SEO issues. Scope and scheduling depend on the plan; a quick Review is a separate workflow.
Yes, if you only want a checklist. In return you get broader scope and follow-up after the result.
The test and prices are from 29 September 2026. Prices change more often than features, so check the vendor’s pricing page before you buy.
See what is happening on your site.
Insight connects an audit to priorities, tasks and a retest after changes.
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