Website readiness profile · Snapshot 23 October 2026

joongang.co.kr

joongang.co.kr's public homepage, certificate and DNS checked against 31 practices and compared with 3,856 News & Media sites.

Readiness index: 49/100
Ahead of: 4.5%
Practices observed: 14/31
Popularity band: Top 5K

Measured 2026-10-23 11:51:15 UTC from one location. How we measure

Readiness by lane

Green: joongang.co.kr. Thin bar: News & Media peer median.

Enable

95/100

Peers 89

Harden

35/100

Peers 56

Accelerate

30/100

Peers 68

Recover

0/100

Peers 11

Priority fixes for joongang.co.kr

Ordered by impact and by how common each practice is among peers.

Priority 1 · Harden
Certificate has more than 14 days left
Observed: The certificate from DigiCert Inc was due to expire on 2026-11-05 (13 days after the check).
Why it matters: An expired certificate makes browsers show a full-page warning. Renewing well ahead of expiry leaves time to fix a failed renewal.
What to do: Automate renewal with ACME (for example Let's Encrypt or your CDN's managed certificates) and add a renewal review to your release calendar so any certificate inside 21 days of expiry gets attention.
99% of News & Media peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.
Guide: HTTPS and TLS Guide for Website Owners
Priority 2 · Accelerate
HTTP/2 negotiated
Observed: The TLS handshake selected HTTP/1.1 instead of HTTP/2.
What to do: Enable HTTP/2 on your CDN or server. Most CDNs do this by default.
94% of News & Media peers do this.
Guide: CDN Guide for Website Owners
Priority 3 · Accelerate
Static files cached for 30 days or more
Observed: A same-site stylesheet or script was cacheable for 1 hours, short of the 30-day benchmark.
What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.
60% of News & Media peers do this.
Guide: Browser Caching Guide for Website Owners
Priority 4 · Accelerate
Modern image formats in use
Observed: The homepage had 224 images and none used WebP or AVIF.
What to do: Serve WebP or AVIF with a JPEG or PNG fallback, either through an image CDN or by generating both formats at build time.
44% of News & Media peers do this.
Guide: AVIF, WebP, JPEG, and PNG: Choose the Right Image Format

What joongang.co.kr already does well

Practices fewer than half of News & Media peers use.

HSTS kept for at least a yearHSTS with a 365-day max-age.35% of peers

What we saw

Homepage checked: https://www.joongang.co.kr/
Homepage response: HTTP 200
TLS: TLSv1.3
Certificate: DigiCert, 388-day validity, expiring 2026-11-05
DNS operators: Akamai Edge DNS
HSTS: max-age 365 days
DMARC policy: p=none
Homepage HTML: 374 KB, gzip
Images on homepage: 224 (jpg 189, png 7)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

Akamai Edge DNS (dns operator)DigiCert (certificate authority)Service guide: Akamai

All 31 checks

Select a gap for the method and fix. How each check works

Not observed 17

Observed 14

HTTP requests move to HTTPS
HSTS kept for at least a year
TLS 1.3 negotiated
HTML compressed
Offscreen images lazy-loaded
robots.txt published
XML sitemap discoverable
Canonical URL declared
Meta description written
Mobile viewport configured
Structured data present
Social preview image set
Page language declared
At most one redirect to the homepage

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Live status for this site: Status Is Down: joongang.co.kr. This profile covers configuration only.

Compare with other News & Media sites

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