Gymlibrary.dev - SEO Checker

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Overview of the SEO Check
Meta information
72% 
Page quality
43% 
Page structure
100% 
Link structure
98% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.27 s
File size
30.60 kB
Words
419
Media files
5
Number of links
99 internal / 7 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Gym Documentation
The page title is too short. (185 pixels of 580 max pixel length) Optimize title
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)
https://www.gymlibrary.dev/index.html
The specified canonical link points to a different page.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: United States of America
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel prev meta tag on this page.
Rel next URL https://www.gymlibrary.dev/content/basic_usage/
The rel next and prev tags are set correctly.
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
viewportwidth=device-width, initial-scale=1
color-schemelight dark
langen
nextcontent/basic_usage/
charsetutf-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
Only 1 paragraph/s was/were found on this page.
There are only 419 words on this page. Good pages should have about 800 words of useful content.
The average number of words per sentence of 31.67 words is high.
19.6% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
The page contains a listing, which indicates a good text layout.
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
Multiple viewport tags are given. There should only be one.
No Apple touch icon is specified.
A viewport "width=device-width,initial-scale=1" is provided.
Bold and strong tags
(Somewhat important)
Some tags are too long. With 87 characters this one is longer than 70 characters:
"the gym interface is simple, pythonic, and capable of representing general rl problems:"
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
/_static/img/gym_logo_black.svgLight Logo
/_static/img/gym_logo_white.svgDark Logo
/_images/lunar_lander_continuous.gifLunar Lander
/_static/img/gym_logo_white.svgGym icon
/_static/img/gym_logo_black.svgGym icon

Page structure

H1 heading
(Critically important)
Gym is a standard API for reinforcement learning, and a diverse collection of reference environments#
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Gym is a standard API for reinforcement learning, and a diverse collection of reference environments#
H2 Gym Documentation
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 7 external links on this page.

Found links on this page

LinkAttributesAnchor text
/content/basic_usage/Basic Usage
/api/core/Core
/api/spaces/Spaces
/api/wrappers/Wrappers
/api/vector/Vector
/api/utils/Utils
/environments/atari/Atari
/environments/atari/adventure/Adventure
/environments/atari/air_raid/Air Raid
/environments/atari/alien/Alien
/environments/atari/amidar/Amidar
/environments/atari/assault/Assault
/environments/atari/asterix/Asterix
/environments/atari/asteroids/Asteroids
/environments/atari/atlantis/Atlantis
/environments/atari/bank_heist/Bank Heist
/environments/atari/battle_zone/Battle Zone
/environments/atari/beam_rider/Beam Rider
/environments/atari/berzerk/Berzerk
/environments/atari/bowling/Bowling
/environments/atari/boxing/Boxing
/environments/atari/breakout/Breakout
/environments/atari/carnival/Carnival
/environments/atari/centipede/Centipede
/environments/atari/chopper_co...Chopper Command
/environments/atari/crazy_clim...Crazy Climber
/environments/atari/defender/Defender
/environments/atari/demon_attack/Demon Attack
/environments/atari/double_dunk/Double Dunk
/environments/atari/elevator_a...Elevator Action
/environments/atari/enduro/Enduro
/environments/atari/fishing_de...FishingDerby
/environments/atari/freeway/Freeway
/environments/atari/frostbite/Frostbite
/environments/atari/gopher/Gopher
/environments/atari/gravitar/Gravitar
/environments/atari/hero/Hero
/environments/atari/ice_hockey/IceHockey
/environments/atari/jamesbond/Jamesbond
/environments/atari/journey_es...JourneyEscape
/environments/atari/kangaroo/Kangaroo
/environments/atari/krull/Krull
/environments/atari/kung_fu_ma...Kung Fu Master
/environments/atari/montezuma_...Montezuma Revenge
/environments/atari/ms_pacman/Ms Pacman
/environments/atari/name_this_...Name This Game
/environments/atari/phoenix/Phoenix
/environments/atari/pitfall/Pitfall
/environments/atari/pong/Pong
/environments/atari/pooyan/Pooyan
/environments/atari/private_eye/PrivateEye
/environments/atari/qbert/Qbert
/environments/atari/riverraid/Riverraid
/environments/atari/road_runner/Road Runner
/environments/atari/robotank/Robot Tank
/environments/atari/seaquest/Seaquest
/environments/atari/skiing/Skiings
/environments/atari/solaris/Solaris
/environments/atari/space_inva...SpaceInvaders
/environments/atari/star_gunner/StarGunner
/environments/atari/tennis/Tennis
/environments/atari/time_pilot/TimePilot
/environments/atari/tutankham/Tutankham
/environments/atari/up_n_down/Up n’ Down
/environments/atari/venture/Venture
/environments/atari/video_pinb...Video Pinball
/environments/atari/wizard_of_...Wizard of Wor
/environments/atari/zaxxon/Zaxxon
/environments/mujoco/MuJoCo
/environments/mujoco/ant/Ant
/environments/mujoco/half_chee...Half Cheetah
/environments/mujoco/hopper/Hopper
/environments/mujoco/humanoid_...Humanoid Standup
/environments/mujoco/humanoid/Humanoid
/environments/mujoco/inverted_...Inverted Double Pendulum
/environments/mujoco/inverted_...Inverted Pendulum
/environments/mujoco/reacher/Reacher
/environments/mujoco/swimmer/Swimmer
/environments/mujoco/walker2d/Walker2D
/environments/toy_text/Toy Text
/environments/toy_text/blackjack/Blackjack
/environments/toy_text/taxi/Taxi
/environments/toy_text/cliff_w...Cliff Walking
/environments/toy_text/frozen_...Frozen Lake
/environments/classic_control/Classic Control
/environments/classic_control/...Acrobot
/environments/classic_control/...Cart Pole
/environments/classic_control/...Mountain Car Continuous
/environments/classic_control/...Mountain Car
/environments/classic_control/...Pendulum
/environments/box2d/Box2D
/environments/box2d/bipedal_wa...Bipedal Walker
/environments/box2d/car_racing/Car Racing
/environments/box2d/lunar_lander/Lunar Lander
/environments/third_party_envi...Third Party Environments
/content/environment_creation/Make your own custom environment
/content/vectorising/Vectorising your environments
https://github.com/openai/gymExternal Github
https://github.com/Farama-Foun...External Contribute to the Docs
https://www.gymlibrary.dev/Anchor #
A-TITLE Permalink to this heading
/_images/lunar_lander_continuo...Text duplicate IMG-ALT Lunar Lander
https://www.sphinx-doc.org/External Subdomain Sphinx
https://pradyunsg.me/External @pradyunsg
https://github.com/pradyunsg/furoExternal Furo
https://farama.org/Announcing-...External Read more about the Farama Foundation and the backstory of the transition from Gym to Gymnasium
https://gymnasium.farama.org/External Subdomain Go to Gymnasium website

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.gymlibrary.dev/"
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 0.27 seconds.
The file size of the HTML document is fine (31 kB).

HTTP Response Header

NameValue
serverGitHub.com
content-typetext/html; charset=utf-8
last-modifiedFri, 23 Jun 2023 13:54:30 GMT
access-control-allow-origin*
etagW/"6495a416-7a7c"
expiresSat, 28 Sep 2024 01:14:54 GMT
cache-controlmax-age=600
content-encodinggzip
x-proxy-cacheMISS
x-github-request-id8616:3C7308:10188FC:1083D78:66F75636
accept-rangesbytes
age0
dateSat, 28 Sep 2024 07:22:03 GMT
via1.1 varnish
x-served-bycache-fra-eddf8230026-FRA
x-cacheHIT
x-cache-hits0
x-timerS1727508123.153152,VS0,VE107
varyAccept-Encoding
x-fastly-request-iddc0b406fcfdd175317da97f5a89cbce21e16eed8
content-length6662
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 555 referring domains.
This page has 3,505 backlinks.
This page has backlinks from 447 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

No valid Robots.txt file was found.

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www.gymlibrary.dev
Gym Documentation

Most important keywords

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

KeywordResultRecheck
Gym86%Check
Gym Documentation69%Check
import gym62%Check
Environments50%Check
env50%Check
Documentation50%Check
API50%Check
info50%Check
Light36%Check
Dark36%Check
Show more keywords and terms

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