Site Health Report Card

stackoverflow.com

  • Stack Overflow
  • Tech · Q&A
  • Online since 2008
  • Checked Sep 30, 2026

“Marked as duplicate. Loaded anyway.”

Pica's take. Stack Overflow is quick and sensible, with a modest crowd of outside scripts and a home on Cloudflare. The answers load before the snark does, mostly. Closing this report card as resolved.

A95 / 100

Overall health

#21 of 100 sites graded

  • Largest paint

    2.3s

  • Page weight

    2.5 MB

  • Requests

    70

  • Third-party scripts

    15

  • Domain age

    18 yrs

  • Blocklists

    0 / 60

Timed by our own browser

Site Speed

A
95

In excellent shape.

Largest paint (LCP)
2.3s
First paint (FCP)
1.0s
Server response (TTFB)
210 ms
Layout shift (CLS)
0.03
Page weight
2.5 MB
Requests
70

Pica: Two and a half megabytes. Accepted answer.

Run the Speed Test on stackoverflow.com

A look from the outside

Security Check

A-
91

In excellent shape.

HTTPS everywhere
Yes
HSTS
Preloaded
TLS
1.3
Content Security Policy
Partial
Mixed content
None
Third-party scripts
15

Pica: Fifteen outside scripts. I downvoted two of them.

Run the Hack Check on stackoverflow.com

What the internet says about it

Reputation Check

A
95

In excellent shape.

Domain age
18 years
Blocklists
0 of 60
Malware reports
None
Email authentication
DMARC reject
Certificate
Valid · 80 days
Lookalike domains
Some

Pica: Eighteen years of copy and paste. Zero blocklists.

Run the Tracker Check on stackoverflow.com

Is it in a good neighborhood?

Hosting Check

A+
100

In excellent shape.

Network
Cloudflare · AS13335
Content delivery
Cloudflare + Fastly
IPv6
Yes
HTTP/3
Yes
Shared-IP neighbors
Shared edge, well kept
Flagged neighbors
0

Pica: Cloudflare with Fastly. Well tuned.

Run the TTFB Check on stackoverflow.com

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How we grade. Four checks, weighted equally: speed timed by our own browser, a security look from the outside, public reputation signals, and the network the site lives on. A look from the outside is not a server audit.