buttondown.com
Buttondown — Newsletter software for people like you
Last scanned Aug 5, 2026, 5:00 PM · 12 views
Overall score
Excellent
Summary
Newsletter software for people like you. This website uses Next.js hosted on Cloudflare behind Cloudflare CDN. SEO is excellent (100/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100).
Buttondown
Newsletter software for people like you. Everyone from Pulitzer Prize winners and Fortune 500s to study groups and first-time authors love Buttondown.
- United States
- Hosted on Cloudflare
Top issues to fix
4 issues found · 1 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
2 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
SEO
0 issue(s) found
Performance
314 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Score history
0 overall since Jul 26, 2026
- Overall
- 94
- SEO
- 100
- Security
- 75
- Performance
- 100
- Accessibility
- 100
Organization
Company details published in this site's own structured data.
Buttondown
Newsletter software for people like you. Everyone from Pulitzer Prize winners and Fortune 500s to study groups and first-time authors love Buttondown.
- Founded
- Jan 1, 2017
Contact
Email, phone, and address published on this site's own pages.
Meta tags
- Title
- Buttondown — Newsletter software for people like you
- Description
- Buttondown is the last email platform you'll migrate to. We're focused on your success, not on bleeding you dry.
- Canonical
- https://buttondown.com
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1
- Robots meta
- Manifest
- https://buttondown.com/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 104.21.79.144
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Google Trust Services
- Subject
- buttondown.com
- Valid from
- Jul 22, 2026
- Valid to
- Oct 20, 2026
- Days until expiry
- 75
- SAN domains
- buttondown.com, *.buttondown.com
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 1 · H2 5 · H3 3
Links
33 internal · 11 external · 0 broken
Images
10 total · 0 missing alt
Scripts / Styles
58 scripts · 1 stylesheets
JS / CSS size
144 KB · 0 B
Page size
105 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 2
- sitemap.xml
- Found
- URLs in sitemap
- 787
SEO issues
No SEO issues detected.
Accessibility issues
No accessibility issues detected.
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://buttondown.com
- Final URL
- https://buttondown.com
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 312 ms
- HTML size
- 105 KB
- Redirect chain
- https://buttondown.com
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Frequently asked questions
- What technology does buttondown.com use?
- buttondown.com is built with Next.js, Cloudflare Analytics.
- Is buttondown.com secure (HTTPS)?
- Yes. buttondown.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 20, 2026.
- Who hosts buttondown.com?
- buttondown.com is hosted on Cloudflare, behind Cloudflare CDN.
- What is buttondown.com's SEO score?
- buttondown.com scored 100/100 for SEO in the latest analysis (excellent).
- What is buttondown.com's overall website score?
- buttondown.com has an overall SiteGraph score of 94/100, combining SEO, performance, security, and accessibility.
- What company operates buttondown.com?
- buttondown.com is operated by Buttondown. Newsletter software for people like you. Everyone from Pulitzer Prize winners and Fortune 500s to study groups and first-time authors love Buttondown.
- Has buttondown.com's score changed over time?
- buttondown.com's overall score has stayed steady at 94/100 since Jul 26, 2026.
- Is buttondown.com hiring?
- buttondown.com has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card