Racket-lang.org - SEO Checker

Sign up for free! PDF Export
Overview of the SEO Check
Meta information
53% 
Page quality
90% 
Page structure
58% 
Link structure
71% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.31 s
File size
38.50 kB
Words
1171
Media files
13
Number of links
8 internal / 143 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Racket
The page title is too short. (64 pixels of 580 max pixel length) Optimize title
The page title is only one word.
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
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
Server location: United States of America
The language is not specified in the HTML markup.
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)
No favicon is linked in the HTML code.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1.0
charsetUTF-8

Test up to 1.000 webpages of racket-lang.org with our free plan!

Try For Free
No trial. It's just free!

Page quality

Content
(Critically important)
This page contains 1171 words. That's ok.
27.7% of the text are stop words.
The page contains a listing, which indicates a good text layout.
23 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 16.22 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 23 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
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
https://racket-lang.org/img/racket-logo.svgsmall logo
https://racket-lang.org/img/racket-logo.svglarge logo
/img/big-macros-class.pngBig Macros
https://racket-lang.org/img/lang-video.png#lang video Dependency Graph
https://racket-lang.org/img/ide-support.pngIDE Support
https://racket-lang.org/img/ugly-syntax.pngDots and Colon-Pipes, too!
/img/racket-con-2018.pngeighth RacketCon, 2018
/img/il-grande-racket.jpgIl Grande Racket
/img/racket-guide.pngThe Guide
/img/racket-school-2018.pngRacket School 2018
/img/beautiful-racket-cover.svgBeautiful Racket
https://racket-lang.org/img/four.pngThe Four Amigos
/img/gear-and-stuff.jpggear

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
There are no headings specified on the page. Headings are important for search engine optimization and help to structure your content.

Heading structure

No headings were found.
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 too many external links (143) on this page.

Found links on this page

LinkAttributesAnchor text
https://racket-lang.org/Racket
IMG-ALT small logo
https://racket-lang.org/sfc.htmldonate
https://docs.racket-lang.org/External Subdomain docs
https://pkgs.racket-lang.org/External Subdomain packages
https://download.racket-lang.org/External Subdomain download
https://blog.racket-lang.org/2...External Subdomain Racket version 8.15
https://con.racket-lang.org/External Subdomain RacketCon 2024
http://docs.racket-lang.org/re...External Subdomain Anchor define
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor hash-ref
http://docs.racket-lang.org/gu...External Subdomain Anchor message-box
https://docs.racket-lang.org/p...External Subdomain Package System
https://docs.racket-lang.org/f...External Subdomain GUI Framework
https://docs.racket-lang.org/r...External Subdomain Standalone Binaries
https://docs.racket-lang.org/f...External Subdomain Foreign Interface
http://docs.racket-lang.org/we...External Subdomain Web Applications
http://docs.racket-lang.org/db...External Subdomain Database
http://docs.racket-lang.org/ma...External Subdomain Math & Statistics
https://docs.racket-lang.org/External Subdomain Full List →
https://docs.racket-lang.org/g...External Subdomain Intro To Macros
https://docs.racket-lang.org/r...External Subdomain Macros In Depth
https://docs.racket-lang.org/g...External Subdomain Making New Languages
/languages.htmlSample #Langs
https://docs.racket-lang.org/g...External Subdomain The Contract Guide
https://www2.ccs.neu.edu/racke...External Subdomain High-Order Contracts
https://docs.racket-lang.org/t...External Subdomain The Typed Racket Guide
https://www2.ccs.neu.edu/racke...External Subdomain Gradual Typing
http://docs.racket-lang.org/dr...External Subdomain DrRacket Guide
https://marketplace.visualstud...External Subdomain VS Code/Magic Racket
https://docs.racket-lang.org/g...External Subdomain Emacs Integration
https://docs.racket-lang.org/g...External Subdomain Vim Integration
http://docs.racket-lang.org/ts...External Subdomain Anchor define-type
http://docs.racket-lang.org/ts...External Subdomain Anchor U
http://docs.racket-lang.org/ts...External Subdomain Anchor String
http://docs.racket-lang.org/ts...External Subdomain Anchor Number
http://docs.racket-lang.org/ts...External Subdomain Anchor :
http://docs.racket-lang.org/ts...External Subdomain Anchor Listof
http://docs.racket-lang.org/ts...External Subdomain Anchor Text duplicate String
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor apply
http://docs.racket-lang.org/re...External Subdomain Anchor string-append
http://docs.racket-lang.org/re...External Subdomain Anchor filter
http://docs.racket-lang.org/re...External Subdomain Anchor string?
http://docs.racket-lang.org/re...External Subdomain Anchor list
http://docs.racket-lang.org/re...External Subdomain Anchor sqrt
http://docs.racket-lang.org/re...External Subdomain Anchor require
http://docs.racket-lang.org/re...External Subdomain Anchor only-in
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/sc...External Subdomain Anchor title
http://docs.racket-lang.org/sc...External Subdomain Anchor italic
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate apply
http://docs.racket-lang.org/sc...External Subdomain Anchor itemlist
http://docs.racket-lang.org/re...External Subdomain Anchor for/list
http://docs.racket-lang.org/re...External Subdomain Anchor in-range
http://docs.racket-lang.org/sc...External Subdomain Anchor item
http://docs.racket-lang.org/re...External Subdomain Anchor ~a
https://docs.racket-lang.org/d...External Subdomain Anchor :-
https://docs.racket-lang.org/d...External Subdomain Anchor Text duplicate :-
http://docs.racket-lang.org/re...External Subdomain Anchor provide
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate require
http://docs.racket-lang.org/re...External Subdomain Anchor for-syntax
http://docs.racket-lang.org/re...External Subdomain Anchor define-syntax
http://docs.racket-lang.org/sy...External Subdomain Anchor syntax-parse
http://docs.racket-lang.org/re...External Subdomain Anchor λ
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor printf
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
https://docs.racket-lang.org/g...External Subdomain add new syntactic constructs
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor new
http://docs.racket-lang.org/gu...External Subdomain frame%
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor random
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate define
http://docs.racket-lang.org/re...External Subdomain Anchor if
http://docs.racket-lang.org/re...External Subdomain Anchor =
http://docs.racket-lang.org/gu...External Subdomain Anchor Text duplicate message-box
http://docs.racket-lang.org/re...External Subdomain Anchor when
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate =
http://docs.racket-lang.org/re...External Subdomain Anchor send
http://docs.racket-lang.org/re...External Subdomain Anchor for
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate in-range
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate new
http://docs.racket-lang.org/gu...External Subdomain button%
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate ~a
http://docs.racket-lang.org/re...External Subdomain Anchor Text duplicate send
https://docs.racket-lang.org/gui/External Subdomain a cross-platform GUI toolbox
https://docs.racket-lang.org/w...External Subdomain web server
https://pkgs.racket-lang.org/External Subdomain Thousands of additional packages
https://docs.racket-lang.org/p...External Subdomain Anchor single command
https://docs.racket-lang.org/r...External Subdomain algebraic pattern matching
https://docs.racket-lang.org/t...External Subdomain Anchor event-handling
https://pkgs.racket-lang.org/p...External Subdomain logic-constraint solver
http://www.cs.utah.edu/plt/pub...External Subdomain classes and objects, mixins and traits
https://docs.racket-lang.org/g...External Subdomain making languages
https://lang.video/External an application domain
https://docs.racket-lang.org/d...External Subdomain DrRacket
https://www2.ccs.neu.edu/racke...External Subdomain née DrScheme
https://docs.racket-lang.org/t...External Subdomain Typed Racket
https://docs.racket-lang.org/d...External Subdomain datalog
https://docs.racket-lang.org/b...External Subdomain parsing packages
https://download.racket-lang.org/External Subdomain Download Racket
https://github.com/racket/racket/External Source Code
https://github.com/racket/rack...External Bug Reports
https://pre.racket-lang.org/in...External Subdomain Nightly Snapshot Builds
https://pkgs.racket-lang.org/External Subdomain Packages
https://docs.racket-lang.org/q...External Subdomain Quick Introduction
https://docs.racket-lang.org/m...External Subdomain Systems Programming
https://docs.racket-lang.org/g...External Subdomain The Racket Guide
https://docs.racket-lang.org/r...External Subdomain The Racket Reference
https://docs.racket-lang.org/c...External Subdomain Text duplicate Web Applications
https://docs.racket-lang.org/External Subdomain All Documentation
https://racket.discourse.group/External Subdomain Discourse
https://discord.gg/6Zq8sH5External Discord
https://racket.slack.com/External Subdomain Slack
https://join.slack.com/t/racke...External Subdomain sign up
https://reddit.com/r/racketExternal Reddit
https://lists.racket-lang.org/External Subdomain Mailing lists
https://functional.cafe/@racke...External Mastodon
https://twitter.com/racketlangExternal Twitter
https://blog.racket-lang.org/External Subdomain Blog
https://github.com/racket/rack...External Wiki
https://www.youtube.com/c/rack...External Subdomain YouTube
https://racket-lang.org/team.htmlTeam
https://docs.racket-lang.org/r...External Subdomain Contributing
/friendly.htmlFriendly Environment Policy
https://racket-lang.org/sfc.htmlSoftware Freedom Conservancy
https://docs.racket-lang.org/g...External Subdomain Text duplicate The Racket Guide
https://www.realmofracket.com/External Subdomain Realm of Racket
https://beautifulracket.com/External Beautiful Racket
https://serverracket.com/External Server: Racket
/books.htmlAll Racket Books
https://school.racket-lang.org/External Subdomain The Racket Summer School
http://programbydesign.org/External Program by Design (aka TeachScheme!)
http://www.bootstrapworld.org/External Subdomain Bootstrap
https://devswag.com/products/r...External Racket T-Shirts
https://devswag.com/products/r...External Racket Stickers
http://www.nsf.gov/External Subdomain the NSF
https://www.darpa.mil/External Subdomain DARPA
http://www.ed.gov/FIPSE/External Subdomain Fund for the Improvement of Postsecondary Education (FIPSE)
http://www.ed.gov/External Subdomain US Department of Education
https://corporate.exxonmobil.c...External Subdomain Exxon Foundation
http://microsoft.com/External Microsoft
http://mozilla.org/External Mozilla
https://google.com/External Google
/individuals.htmlindividuals

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://racket-lang.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 0.31 seconds.
The file size of the HTML document is fine (39 kB).

HTTP Response Header

NameValue
dateFri, 08 Nov 2024 11:46:15 GMT
content-typetext/html; charset=utf-8
x-amz-id-25Dy/RyihVmqF2Sq5hQo5lGG1u8we+6yi4pWxFU4aEIY6jJmVhUxOOHGwiRzuEUYYKnK13HDJkHQ=
x-amz-request-idH02BTY4JVQKQVJ0R
cache-controlmax-age=0, no-cache
last-modifiedTue, 05 Nov 2024 16:56:50 GMT
x-amz-storage-classREDUCED_REDUNDANCY
cf-cache-statusDYNAMIC
varyaccept-encoding
report-to{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=HphCDjDGgWE2TP%2FFk2YKsBrq0nnmapDYhhzDX7Tgjif3ydOMoOVox8vmzq6P2Kz%2Bvol9d3TmBPkk6MRxJpvXFwCgyE2j8ASu1Ypm%2BMdqsGmL2%2B5lXszJua8KcSzV7A%2FMSWU%3D"}],"group":"cf-nel","max_age":604800}
nel{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
servercloudflare
cf-ray8df5524c5a0b4dbe-FRA
content-encodinggzip
alt-svch3=":443"; ma=86400
server-timingcfL4;desc="?proto=TCP&rtt=9684&sent=7&recv=11&lost=0&retrans=0&sent_bytes=3421&recv_bytes=943&delivery_rate=706341&cwnd=118&unsent_bytes=0&cid=54bae70fb02c0eaf&ts=224&x=0"
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 4,495 referring domains.
This page has 286,810 backlinks.
This page has backlinks from 2,367 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: *
Disallow:

Similar sites

Search preview

racket-lang.org
Racket

Most important keywords

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

KeywordResultRecheck
Racket61%Check
lang racket58%Check
Racket Guide50%Check
Typed Racket48%Check
Racket comes48%Check
Racket macro system46%Check
macros43%Check
lang40%Check
Language39%Check
languages39%Check
Show more keywords and terms

Test up to 1.000 webpages of racket-lang.org with our free plan!

Try For Free
No trial. It's just free!

Cookie Policy

We use cookies to make our site work and also for analytics and advertising purposes. You can enable or disable optional cookies as desired. See the following links for more information.

Contact | Privacy

We need these so the site can function properly

So we can better understand how visitors use our website

So we can serve you tailored ads and promotions