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safing.io

Portmaster - Application Firewall by Safing

Last scanned Aug 4, 2026, 6:00 AM · 12 views

76

Overall score

Fair

Summary

Portmaster is a free and open-source application that puts you back in charge over all your computer's network connections. This website uses Tailwind CSS behind Fastly CDN. SEO is fair (70/100) and accessibility is fair (70/100). Security scores good (75/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.

Portmaster is a free and open-source application that puts you back in charge over all your computer's network connections. Increase your privacy and security. Get peace of mind.

Top issues to fix

9 issues found · 2 high priority

  • Missing Content-Security-Policy header

    Security

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

  • Over half of images are missing alt text

    Accessibility

    Add alt attributes to images — screen readers depend on them, and they help image SEO.

  • 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.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • Missing canonical link

    SEO

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

+3 more issues — details in the sections below.

70

SEO

5 issue(s) found

90

Performance

212 ms

75

Security

HTTPS & header checks

70

Accessibility

1 issue(s) found

Score history

0 overall since Jul 27, 2026

Overall
76
SEO
70
Security
75
Performance
90
Accessibility
70

Organization

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

Portmaster is a free and open-source application that puts you back in charge over all your computer's network connections. Increase your privacy and security. Get peace of mind.

YouTubeX (Twitter)GitHubYouTube

Meta tags

Title
Portmaster - Application Firewall by Safing
Description
Portmaster is a free and open-source application that puts you back in charge over all your computer's network connections. Increase your privacy and security. Get peace of mind.
Canonical
Language
en
Charset
UTF-8
Viewport
width=device-width, initial-scale=1.0, shrink-to-fit=no
Robots meta
Manifest
https://safing.io/assets/icons/manifest.json

OpenGraph & Twitter Card

OpenGraph

og:title
Portmaster - Application Firewall by Safing
og:description
—
og:type
website
og:url
https://safing.io/

Twitter Card

twitter:card
summary_large_image
twitter:title
Portmaster - Application Firewall by Safing
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Tailwind CSS

Hosting & CDN

Hosting provider
—
CDN provider
Fastly
IP address
185.199.109.153
ASN
—

DNS records

TypeValue
A
  • 185.199.109.153
AAAA—
MX
  • mxext1.mailbox.org
  • mxext3.mailbox.org
  • mxext2.mailbox.org
TXT
  • v=spf1 mx include:mailbox.org -all
  • MS=ms92668260
NS
  • ns3.second-ns.de
  • ns.second-ns.com
  • ns1.your-server.de
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
safing.io
Valid from
Jun 23, 2026
Valid to
Sep 21, 2026
Days until expiry
48
SAN domains
safing.io, www.safing.io

Security headers

  • Strict-Transport-SecurityEnabled
  • 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 4 · H3 0

Links

29 internal · 16 external · 0 broken

Images

23 total · 14 missing alt

Scripts / Styles

3 scripts · 3 stylesheets

JS / CSS size

1.6 KB · 6.0 MB

Page size

29.5 KB

Robots.txt & Sitemap

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

SEO issues

  • Meta description longer than 160 characters
  • Missing canonical link
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • Over half of images are missing alt text

Scan details

Requested URL
https://safing.io
Final URL
https://safing.io
HTTP status
200
HTTP version
HTTP/2
Response time
212 ms
HTML size
29.5 KB
Redirect chain
https://safing.io

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Frequently asked questions

What technology does safing.io use?
safing.io is built with Tailwind CSS.
Is safing.io secure (HTTPS)?
Yes. safing.io uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 21, 2026.
Who hosts safing.io?
Hosting provider information for safing.io is not available yet.
What is safing.io's SEO score?
safing.io scored 70/100 for SEO in the latest analysis (fair).
What is safing.io's overall website score?
safing.io has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.
Has safing.io's score changed over time?
safing.io's overall score has stayed steady at 76/100 since Jul 27, 2026.