Content Security Policy
Security
HSTS
SecurityContent Security Policy vs HSTS (2026): Which Is Better?
Content Security Policy and HSTS are both popular choices, but they serve different needs. Content Security Policy is a Security with a traditional, manual approach to building, while HSTS is a Security that prioritises developer or designer control.
Below you'll find a side-by-side breakdown of detection signals, AI scores, and technical fingerprints — plus our honest take on which builder wins for different use cases.
How we detect Content Security Policy vs HSTS — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
Side-by-Side Comparison
| | |
|---|---|---|
| Category | Security | Security |
| AI Score | 10/100 — Unknown | 10/100 — Unknown |
| Detection Signals | 2 patterns | 1 patterns |
| Script Detection | — | — |
| CDN Detection | — | — |
| Header Detection | 1 headers | 1 headers |
| Sites Detected | 38 scans | 273 scans |
| Best For | Professional websitesTry Content Security Policy → | Professional websitesTry HSTS → |
| Official Website | Visit | Visit |
Example Websites
Content Security Policy
Security
Content Security Policy is a security with an AI Score of 10/100 (Unknown). Our detection engine uses 2 signal patterns to identify Content Security Policy-built sites.
HSTS
Security
HSTS is a security with an AI Score of 10/100 (Unknown). Our detection engine uses 1 signal patterns to identify HSTS-built sites.
Platform Overviews
Content Security Policy
Content Security Policy (CSP) is not a product but an HTTP security header standard that lets a site restrict which sources scripts, styles, and other resources may load from, reducing the risk of XSS attacks. Our engine detects a configured CSP through 1 HTTP header check and 1 meta-tag pattern (`Content-Security-Policy`, delivered either as a response header or an equivalent `<meta>` tag). Its presence in our results is a security-posture signal, not a builder or vendor identification. Reference: MDN's CSP documentation.
HSTS
HTTP Strict Transport Security (HSTS) is a security header standard that instructs browsers to only ever connect to a site over HTTPS, protecting against protocol-downgrade and cookie-hijacking attacks on the first request. Our engine detects it through 1 HTTP header check for the `Strict-Transport-Security` response header. Like CSP, this is a security-configuration signal we surface alongside builder/technology detection, not a vendor or platform identification. Reference: MDN's HSTS documentation.
Key Differences
- Both Content Security Policy and HSTS are classified as Security tools, making them the most direct competitors in this comparison.
- Content Security Policy scores higher on AI involvement (10/100 vs 10/100 for HSTS), meaning it relies more heavily on AI for site generation and content creation.
- Our detection engine identifies Content Security Policy using 2 fingerprint patterns and HSTS using 1 pattern — more signals generally means more reliable detection.
Which Should You Choose?
Choose Content Security Policy if…
- You prefer a security solution
- You want more manual control over the final output
- Content Security Policy's detection fingerprint of 2 signals means your site is reliably identifiable
Choose HSTS if…
- You need a security approach
- You prefer traditional building tools with predictable output
- HSTS's ecosystem and community better match your team's existing workflow
Our Pick — Based on 311+ detections
HSTS
Detected 7× more often than Content Security Policy across our database of scanned sites.
Was this helpful?
Check Which Builder Powers a Site
Curious if a website uses Content Security Policy or HSTS? Scan it now — free.
Content Security Policy vs Sucuri