Chartjs.org - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
40% 
Page structure
92% 
Link structure
96% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.07 s
File size
17.00 kB
Words
257
Media files
7
Number of links
8 internal / 4 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Chart.js | Open source HTML5 Charts for your website
The length of the page title is perfect. (488 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Simple yet flexible JavaScript charting library for the modern web
The length of the meta description is perfect. (401 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en-us
Server location: United States of America
The following language is defined by HTML: en-us
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
descriptionSimple yet flexible JavaScript charting library for the modern web
langen-us
twitter:cardsummary_large_image
twitter:titleChart.js
twitter:descriptionSimple yet flexible JavaScript charting library for the modern web
twitter:imagehttps://www.chartjs.org/img/cover.png
og:typewebsite
og:titleChart.js
og:descriptionSimple yet flexible JavaScript charting library for the modern web
og:imagehttps://www.chartjs.org/img/cover.png
Content-Security-Policydefault-src 'self' 'unsafe-inline' www.google-analytics.com *.typekit.net

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
There are only 257 words on this page. Good pages should have about 800 words of useful content.
30% of the text are stop words.
3 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 9.6 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No viewpoint tag is provided.
No Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 6 tags for this page.
Image SEO
(Somewhat important)
5 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

URLAlt attributeTitle
/img/chartjs-logo.svglogo
/img/tree-shaking.pngExample of reduced bundle size from 48 KB to 14 KB
https://www.chartjs.org/img/open-source.svgNo alt attribute provided
https://www.chartjs.org/img/chart-types.svgNo alt attribute provided
https://www.chartjs.org/img/canvas-icon.svgNo alt attribute provided
https://www.chartjs.org/img/responsive.svgNo alt attribute provided
https://www.chartjs.org/img/icon.svgNo alt attribute provided

Page structure

H1 heading
(Critically important)
Chart.js
The H1 heading is too short (8 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Chart.js
H2 Simple yet flexible JavaScript charting library for the modern web
H2 Find Chart.js on GitHub or Read detailed documentation
H3 New in 4.0 Colors plugin
H3 New in 4.0 Tree-shaking
H3 New in 3.5 Scale stacking
H3 New in 3.4 Subtitle plugin
H3 New in 3.1 Line segment styling
H3 New in 3.0 Advanced animations
H3 New in 3.0 Performance!
H3 New in 2.0 Mixed chart types
H3 New in 2.0 New chart axis types
H3 New in 2.0 Animate everything!
H4 Open source
H4 8 Chart types
H4 HTML5 Canvas
H4 Responsive
There are too few (8) internal links on this page.
Every linktext is unique.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 4 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.chartjs.org/docsGet Started
/docs/latest/samplesSamples
https://github.com/chartjs/awe...New window External Ecosystem
https://github.com/chartjs/Cha...New window External GitHub
/docs/latest/general/colors.htmlSubdomain Anchor Default palette
/docs/latest/getting-started/i...Subdomain Anchor necessary components
/docs/latest/configuration/sub...Subdomain plugin
/docs/latest/configuration/dec...Subdomain decimation plugin
/docs/latest/configuration/ani...Subdomain transitions
https://github.com/chartjs/Cha...New window External Find Chart.js on GitHub
https://www.chartjs.org/docsRead detailed documentation
https://github.com/chartjs/Cha...New window External these contributors.

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.chartjs.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.07 seconds.
The file size of the HTML document is fine (17 kB).

HTTP Response Header

NameValue
dateSat, 21 Sep 2024 11:54:25 GMT
content-typetext/html; charset=utf-8
last-modifiedMon, 26 Aug 2024 15:23:33 GMT
access-control-allow-origin*
expiresSat, 21 Sep 2024 15:54:25 GMT
cache-controlpublic, max-age=14400
x-proxy-cacheMISS
x-github-request-idD5B3:29C876:250DB:25D39:66CCA6EA
via1.1 varnish
x-served-bycache-bma1667-BMA
x-cacheMISS
x-cache-hits0
x-timerS1724688107.004053,VS0,VE123
varyAccept-Encoding
x-fastly-request-idb709304cf93ea0140bc3443183345b067441314e
cf-cache-statusHIT
age3824
set-cookie256 Characters
servercloudflare
cf-ray8c69dc45cb3c1e31-FRA
content-encodinggzip
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 5,996 referring domains.
This page has 501,650 backlinks.
This page has backlinks from 4,503 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

# This robots.txt file discourages search engines from indexing
# all versions of documentation pages except for the "latest". 
# See https://github.com/chartjs/Chart.js/issues/9519 for details

User-agent: *
Allow: /
Allow: /docs/latest/
Disallow: /docs/*/

Similar sites

Search preview

www.chartjs.org
Chart.js | Open source HTML5 Charts for your website
Simple yet flexible JavaScript charting library for the modern web

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
Chart87%Check
chart types66%Check
web61%Check
Modern Web55%Check
Open52%Check
source52%Check
Open Source52%Check
JavaScript50%Check
modern50%Check
HTML550%Check
Show more keywords and terms

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