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streamlit.io

Streamlit • A faster way to build and share data apps

Last scanned Aug 3, 2026, 10:00 AM · 7 views

83

Overall score

Great

Summary

Streamlit is an open-source Python framework for data scientists and AI/ML engineers to deliver interactive data apps – in only a few lines of code. This website uses Next.js behind Netlify CDN. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores excellent (90/100) and performance excellent (90/100). Top issue: Missing canonical link.

Streamlit is an open-source Python framework for data scientists and AI/ML engineers to deliver interactive data apps – in only a few lines of code.

Top issues to fix

7 issues found · 1 high priority

  • 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 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.

  • 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.

+1 more issue — details in the sections below.

65

SEO

5 issue(s) found

90

Performance

81 ms

90

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Score history

+1 overall since Jul 26, 2026

Overall
83
SEO
65
Security
90
Performance
90
Accessibility
90

Organization

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

Streamlit is an open-source Python framework for data scientists and AI/ML engineers to deliver interactive data apps – in only a few lines of code.

YouTubeX (Twitter)LinkedInYouTubeX (Twitter)X (Twitter)X (Twitter)X (Twitter)X (Twitter)X (Twitter)

Contact

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

Meta tags

Title
Streamlit • A faster way to build and share data apps
Description
Streamlit is an open-source Python framework for data scientists and AI/ML engineers to deliver interactive data apps – in only a few lines of code.
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Streamlit • A faster way to build and share data apps
og:description
Streamlit is an open-source Python framework for data scientists and AI/ML engineers to deliver interactive data apps – in only a few lines of code.
og:type
website
og:url
https://streamlit.io/

Twitter Card

twitter:card
summary_large_image
twitter:title
Streamlit • A faster way to build and share data apps
twitter:description
Streamlit is an open-source Python framework for data scientists and AI/ML engineers to deliver interactive data apps – in only a few lines of code.

Technologies

Detected frameworks, languages, and tools.

Next.js

Hosting & CDN

Hosting provider
—
CDN provider
Netlify
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
streamlit.io
Valid from
Jun 5, 2026
Valid to
Sep 3, 2026
Days until expiry
31
SAN domains
streamlit.io, www.streamlit.io

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 12 · H3 6

Links

15 internal · 111 external · 20 broken

Images

131 total · 1 missing alt

Scripts / Styles

31 scripts · 7 stylesheets

JS / CSS size

124 KB · 5.8 KB

Page size

334 KB

Robots.txt & Sitemap

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

SEO issues

  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://streamlit.io
Final URL
https://streamlit.io
HTTP status
200
HTTP version
HTTP/2
Response time
75 ms
HTML size
334 KB
Redirect chain
https://streamlit.io

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does streamlit.io use?
streamlit.io is built with Next.js.
Is streamlit.io secure (HTTPS)?
Yes. streamlit.io uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Sep 3, 2026.
Who hosts streamlit.io?
Hosting provider information for streamlit.io is not available yet.
What is streamlit.io's SEO score?
streamlit.io scored 65/100 for SEO in the latest analysis (fair).
What is streamlit.io's overall website score?
streamlit.io has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.
Has streamlit.io's score changed over time?
streamlit.io's overall score has improved by 1 point (from 82 to 83) since Jul 26, 2026.