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SGSiteGraph

osf.io

OSF

Last scanned Jul 24, 2026, 6:27 PM · 1 view

72

Overall score

Fair

Summary

This website uses Nginx hosted on Google Cloud. SEO is fair (55/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance fair (60/100). Top issue: Missing meta description.

United States
Hosted on Google Cloud

Top issues to fix

7 issues found · 3 high priority

  • Missing Content-Security-Policy header

    Security

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

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • 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.

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

+1 more issue — details in the sections below.

55

SEO

6 issue(s) found

60

Performance

363 ms

90

Security

HTTPS & header checks

90

Accessibility

1 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.

Contact

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

Source: https://osf.io/contact

Meta tags

Title
OSF
Description
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

Nginx

Hosting & CDN

Hosting provider
Google Cloud
CDN provider
—
IP address
35.190.84.173
ASN
AS396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US)

DNS records

TypeValue
A
  • 35.190.84.173
AAAA—
MX
  • mxb.mailgun.org
  • mxa.mailgun.org
TXT
  • v=spf1 include:servers.mcsv.net include:mailgun.org include:spf.mandrillapp.com include:helpscoutemail.com -all
NS
  • ns-cloud-e3.googledomains.com
  • ns-cloud-e4.googledomains.com
  • ns-cloud-e2.googledomains.com
  • ns-cloud-e1.googledomains.com
CAA
  • 0 issue "letsencrypt.org"
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
osf.io
Valid from
Jun 8, 2026
Valid to
Sep 6, 2026
Days until expiry
43
SAN domains
osf.io

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

5 scripts · 1 stylesheets

JS / CSS size

6.3 MB · 484 KB

Page size

4.1 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
3
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

  • Missing meta description
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • sitemap.xml not found

Accessibility issues

  • No H1 heading found

Careers

View careers page

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://osf.io
Final URL
https://osf.io
HTTP status
200
HTTP version
HTTP/2
Response time
363 ms
HTML size
4.1 KB
Redirect chain
https://osf.io

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does osf.io use?
osf.io is built with Nginx.
Is osf.io secure (HTTPS)?
Yes. osf.io uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 6, 2026.
Who hosts osf.io?
osf.io is hosted on Google Cloud.
What is osf.io's SEO score?
osf.io scored 55/100 for SEO in the latest analysis (fair).
What is osf.io's overall website score?
osf.io has an overall SiteGraph score of 72/100, combining SEO, performance, security, and accessibility.
Is osf.io hiring?
osf.io has a careers page; check it directly for current openings.