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buf.build

Buf · Modern Protobuf and gRPC

Last scanned Aug 24, 2026, 1:23 PM

97

Overall score

Excellent

Summary

Buf is the toolchain for Protobuf, gRPC, and ConnectRPC - lint and generate code with the Buf CLI, publish and govern schemas on the Buf Schema Registry. This website uses Google Analytics. SEO is excellent (90/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: robots.txt not found.

Buf is the toolchain for Protobuf, gRPC, and ConnectRPC - lint and generate code with the Buf CLI, publish and govern schemas on the Buf Schema Registry.

Top issues to fix

3 issues found

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

  • 4 broken links on the page

    SEO

    Fix or remove broken links — they waste crawl budget and erode user trust.

90

SEO

2 issue(s) found

100

Performance

328 ms

100

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Buf is the toolchain for Protobuf, gRPC, and ConnectRPC - lint and generate code with the Buf CLI, publish and govern schemas on the Buf Schema Registry.

X (Twitter)

Contact

Email, phone, and address published on this site's own pages.

Meta tags

Title
Buf · Modern Protobuf and gRPC
Description
Buf is the toolchain for Protobuf, gRPC, and ConnectRPC - lint and generate code with the Buf CLI, publish and govern schemas on the Buf Schema Registry.
Canonical
https://buf.build/
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest
https://buf.build/site.webmanifest

OpenGraph & Twitter Card

OpenGraph

og:title
Buf · Modern Protobuf and gRPC
og:description
Buf is the toolchain for Protobuf, gRPC, and ConnectRPC - lint and generate code with the Buf CLI, publish and govern schemas on the Buf Schema Registry.
og:type
website
og:url
https://buf.build/

Twitter Card

twitter:card
summary_large_image
twitter:title
Buf · Modern Protobuf and gRPC
twitter:description
Buf is the toolchain for Protobuf, gRPC, and ConnectRPC - lint and generate code with the Buf CLI, publish and govern schemas on the Buf Schema Registry.

Technologies

Detected frameworks, languages, and tools.

AstroGoogle AnalyticsGoogle Ads

Hosting & CDN

Hosting provider
—
CDN provider
—
IP address
34.95.71.106
ASN
—

DNS records

TypeValue
A
  • 34.95.71.106
AAAA—
MX
  • alt1.aspmx.l.google.com
  • alt3.aspmx.l.google.com
  • alt2.aspmx.l.google.com
  • alt4.aspmx.l.google.com
  • aspmx.l.google.com
TXT—
NS
  • rosemary.ns.cloudflare.com
  • tony.ns.cloudflare.com
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
buf.build
Valid from
Aug 17, 2026
Valid to
Nov 15, 2026
Days until expiry
81
SAN domains
buf.build, api.buf.build

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyEnabled
  • Permissions-PolicyEnabled

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 3 · H3 5

Links

12 internal · 10 external · 4 broken

Images

112 total · 0 missing alt

Scripts / Styles

16 scripts · 2 stylesheets

JS / CSS size

16.3 KB · 90.0 KB

Page size

57.9 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://buf.build
Final URL
https://buf.build
HTTP status
200
HTTP version
HTTP/2
Response time
327 ms
HTML size
57.9 KB
Redirect chain
https://buf.build

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Frequently asked questions

What technology does buf.build use?
buf.build is built with Astro, Google Analytics, Google Ads.
Is buf.build secure (HTTPS)?
Yes. buf.build uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Nov 15, 2026.
Who hosts buf.build?
Hosting provider information for buf.build is not available yet.
What is buf.build's SEO score?
buf.build scored 90/100 for SEO in the latest analysis (excellent).
What is buf.build's overall website score?
buf.build has an overall SiteGraph score of 97/100, combining SEO, performance, security, and accessibility.