DJ Checkup vs CertPost

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

DJ Checkup compared with CertPost
Detail	DJ Checkup	CertPost
What it does	Check your Django site for security errors	SSL certificate monitoring that reads the cert your server serves
Stage	Not given	Established
Founded	Not given	Not given
Based in	Not given	GB
Pricing model	free	freemium
Pricing	Not given	Not given
Key features	HTTPS verification DEBUG mode checking Admin site security verification Security headers configuration HSTS header validation CSRF cookie security checks SessionID cookie security checks X-Frame header configuration Login page HTTPS verification	Checks the served certificate, not renewal logs Full certificate chain and intermediate expiry validation Hostname and SAN mismatch detection Any TLS port over IPv4 and IPv6 Domain registration expiry monitoring Certificate Transparency new-issuance alerts Email and webhook alerts Weekly all-clear digest
What makes it different	17 specific security checks tailored for Django applications Private results with unique URLs never shared with third parties	Monitors what your server actually serves, not what renewal logs say Validates every link in the certificate chain, including intermediates Four warnings before expiry instead of one Watches from outside your registrar account No agent installation required
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	20 no change since last check	11 no change since last check
Trust Flow (Majestic)	23	8
Citation Flow (Majestic)	29	28
Referring domains (Majestic)	160	38

4 details filled in for both companies.

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