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selenium.dev

Selenium

Last scanned Jul 26, 2026, 5:34 AM

84

Overall score

Great

Summary

Selenium automates browsers. This website uses Plausible Analytics hosted on Fastly behind Fastly CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Missing canonical link.

Selenium automates browsers. That's it!

United States
Hosted on Fastly

Top issues to fix

6 issues found · 2 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

85

SEO

2 issue(s) found

90

Performance

46 ms

65

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.

Selenium automates browsers. That's it!

LinkedInX (Twitter)YouTubeYouTube

Contact

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

Meta tags

Title
Selenium
Description
Selenium automates browsers. That's it!
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width,initial-scale=1,shrink-to-fit=no
Robots meta
index, follow
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Selenium
og:description
Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should) also be automated as well. Getting Started Selenium WebDriver Selenium WebDriver If you want to create robust, browser-based regression automation suites and tests, scale and distribute scripts across many environments, then you want to use Selenium WebDriver, a collection of language specific bindings to drive a browser - the way it is meant to be driven.
og:type
website
og:url
https://www.selenium.dev/

Twitter Card

twitter:card
summary_large_image
twitter:title
Selenium
twitter:description
Selenium automates browsers. That's it! What you do with that power is entirely up to you. Primarily it is for automating web applications for testing purposes, but is certainly not limited to just that. Boring web-based administration tasks can (and should) also be automated as well. Getting Started Selenium WebDriver Selenium WebDriver If you want to create robust, browser-based regression automation suites and tests, scale and distribute scripts across many environments, then you want to use Selenium WebDriver, a collection of language specific bindings to drive a browser - the way it is meant to be driven.

Technologies

Detected frameworks, languages, and tools.

jQueryPlausible Analytics

Hosting & CDN

Hosting provider
Fastly
CDN provider
Fastly
IP address
185.199.108.153
ASN
AS54113 (FASTLY - Fastly, Inc., US)

DNS records

TypeValue
A
  • 185.199.108.153
  • 185.199.111.153
  • 185.199.110.153
  • 185.199.109.153
AAAA
  • 2606:50c0:8000::153
  • 2606:50c0:8002::153
  • 2606:50c0:8003::153
  • 2606:50c0:8001::153
MX—
TXT—
NS—
CAA
  • 0 issuewild "letsencrypt.org"
  • 0 issue "sectigo.com"
  • 0 issue "letsencrypt.org"
  • 0 issuewild "sectigo.com"
  • 0 issuewild "digicert.com"
  • 0 issue "digicert.com"
CNAME
  • seleniumhq.github.io
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
www.selenium.dev
Valid from
Jun 22, 2026
Valid to
Sep 20, 2026
Days until expiry
56
SAN domains
selenium.dev, www.selenium.dev

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 6 · H3 1

Links

24 internal · 21 external · 0 broken

Images

7 total · 0 missing alt

Scripts / Styles

9 scripts · 3 stylesheets

JS / CSS size

352 KB · 417 KB

Page size

29.8 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
-1

SEO issues

  • Missing canonical link
  • No structured data (JSON-LD) found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://selenium.dev
Final URL
https://www.selenium.dev/
HTTP status
200
HTTP version
HTTP/2
Response time
46 ms
HTML size
29.8 KB
Redirect chain
https://selenium.dev → https://www.selenium.dev/

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Frequently asked questions

What technology does selenium.dev use?
selenium.dev is built with jQuery, Plausible Analytics.
Is selenium.dev secure (HTTPS)?
Yes. selenium.dev uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 20, 2026.
Who hosts selenium.dev?
selenium.dev is hosted on Fastly, behind Fastly CDN.
What is selenium.dev's SEO score?
selenium.dev scored 85/100 for SEO in the latest analysis (great).
What is selenium.dev's overall website score?
selenium.dev has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.