Gymnasium.farama.org - SEO Checker

Sign up for free! PDF Export
Overview of the SEO Check
Meta information
93% 
Page quality
42% 
Page structure
79% 
Link structure
97% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.19 s
File size
40.50 kB
Words
396
Media files
8
Number of links
73 internal / 6 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Gymnasium Documentation
The length of the page title is perfect. (249 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
A standard API for reinforcement learning and a diverse set of reference environments (formerly Gym)
The length of the meta description is perfect. (626 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://gymnasium.farama.org/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://gymnasium.farama.org/introduction/basic_usage/
The rel next and prev tags are set correctly.
Domain
(Somewhat important)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
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
descriptionA standard API for reinforcement learning and a diverse set of reference environments (formerly Gym)
langen
twitter:cardsummary_large_image
og:titleGymnasium Documentation
og:typewebsite
og:descriptionA standard API for reinforcement learning and a diverse set of reference environments (formerly Gym)
og:urlhttps://gymnasium.farama.org/index.html
og:imagehttps://gymnasium.farama.org/_static/img/gymnasium-github.png
nextintroduction/basic_usage/
charsetutf-8

Automatically check gymnasium.farama.org including all subpages at once!

Try for free
Guaranteed free of charge during trial period.

Page quality

Content
(Critically important)
Only 1 paragraph/s was/were found on this page.
There are only 396 words on this page. Good pages should have about 800 words of useful content.
The average number of words per sentence of 32 words is high.
17.7% of the text are stop words.
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)
The usage of strong and bold tags is perfect. We recommend the use of up to 8 tags for this page.
Image SEO
(Somewhat important)
1 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
/_static/img/gymnasium_black.svgLight Logo
/_static/img/gymnasium_white.svgDark Logo
/_static/img/farama-logo-header.svgNo alt attribute provided
/_static/img/farama_solid_white.svgFarama Foundation logo
/_static/img/gymnasium_black.svgLight Logo
/_static/img/gymnasium_white.svgDark Logo
/_images/gymnasium-text.pngGymnasium Logo
/_images/lunar_lander.gifLunar Lander

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 An API standard for reinforcement learning with a diverse collection of reference environments
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 6 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://farama.org/External Farama Foundation
IMG-ALT Farama Foundation logo
/introduction/basic_usage/Basic Usage
/introduction/train_agent/Training an Agent
/introduction/create_custom_env/Create a Custom Environment
/introduction/record_agent/Recording Agents
/introduction/speed_up_env/Speeding Up Training
/introduction/migration_guide/Gym Migration Guide
/api/env/Env
/api/registry/Make and register
/api/spaces/Spaces
/api/spaces/fundamental/Fundamental Spaces
/api/spaces/composite/Composite Spaces
/api/spaces/utils/Spaces Utils
/api/wrappers/Wrappers
/api/wrappers/table/List of Wrappers
/api/wrappers/misc_wrappers/Misc Wrappers
/api/wrappers/action_wrappers/Action Wrappers
/api/wrappers/observation_wrap...Observation Wrappers
/api/wrappers/reward_wrappers/Reward Wrappers
/api/vector/Vectorize
/api/vector/wrappers/Text duplicate Wrappers
/api/vector/async_vector_env/AsyncVectorEnv
/api/vector/sync_vector_env/SyncVectorEnv
/api/vector/utils/Utility functions
/api/utils/Text duplicate Utility functions
/api/functional/Functional Env
/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/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/mujoco/MuJoCo
/environments/mujoco/ant/Ant
/environments/mujoco/half_chee...Half Cheetah
/environments/mujoco/hopper/Hopper
/environments/mujoco/humanoid/Humanoid
/environments/mujoco/humanoid_...Humanoid Standup
/environments/mujoco/inverted_...Inverted Double Pendulum
/environments/mujoco/inverted_...Inverted Pendulum
/environments/mujoco/pusher/Pusher
/environments/mujoco/reacher/Reacher
/environments/mujoco/swimmer/Swimmer
/environments/mujoco/walker2d/Walker2D
/environments/atari/Atari
/environments/third_party_envi...External Environments
/tutorials/gymnasium_basics/Gymnasium Basics
/tutorials/gymnasium_basics/en...Make your own custom environment
/tutorials/gymnasium_basics/ha...Handling Time Limits
/tutorials/gymnasium_basics/im...Implementing Custom Wrappers
/tutorials/gymnasium_basics/lo...Load custom quadruped robot environments
/tutorials/training_agents/Training Agents
/tutorials/training_agents/act...Action Masking in the Taxi Environment
/tutorials/training_agents/act...Running the Experiment
/tutorials/training_agents/act...Visualizing Results
/tutorials/training_agents/act...Results Analysis
/tutorials/training_agents/bla...Solving Blackjack with Tabular Q-Learning
/tutorials/training_agents/fro...Solving Frozenlake with Tabular Q-Learning
/tutorials/training_agents/muj...Training using REINFORCE for Mujoco
/tutorials/training_agents/vec...Speeding up A2C Training with Vector Envs
/tutorials/third-party-tutorials/Third-Party Tutorials
https://github.com/Farama-Foun...External Github
https://arxiv.org/abs/2407.17032External Paper
/gymnasium_release_notes/Gymnasium Release Notes
/gym_release_notes/Gym Release Notes
https://github.com/Farama-Foun...External Contribute to the Docs
https://github.com/Farama-Foun...External Edit this page
A-TITLE Edit this page
/_images/lunar_lander.gifText duplicate IMG-ALT Lunar Lander
/introduction/migration_guide/migration guide
https://github.com/Farama-Foun...External No Text

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://gymnasium.farama.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.19 seconds.
The file size of the HTML document is fine (41 kB).

HTTP Response Header

NameValue
serverGitHub.com
content-typetext/html; charset=utf-8
last-modifiedSun, 03 Aug 2025 09:39:45 GMT
access-control-allow-origin*
etagW/"688f2e61-a22f"
expiresMon, 04 Aug 2025 02:28:18 GMT
cache-controlmax-age=600
content-encodinggzip
x-proxy-cacheMISS
x-github-request-id61CD:14A889:5C0AFEF:5CBA913:6890186A
accept-rangesbytes
age513
dateMon, 04 Aug 2025 19:50:09 GMT
via1.1 varnish
x-served-bycache-fra-eddf8230062-FRA
x-cacheHIT
x-cache-hits0
x-timerS1754337010.975782,VS0,VE1
varyAccept-Encoding
x-fastly-request-id348db679df402afbbb97d87554c9ce66efdf351c
content-length8772
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 278 referring domains.
This page has 1,191 backlinks.
This page has backlinks from 216 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

gymnasium.farama.org
Gymnasium Documentation
A standard API for reinforcement learning and a diverse set of reference environments (formerly Gym)

Most important keywords

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

KeywordResultRecheck
Gym78%Check
Gymnasium66%Check
Gymnasium Documentation56%Check
Env50%Check
Environment50%Check
Environments50%Check
API50%Check
Farama50%Check
standard50%Check
reinforcement50%Check
Show more keywords and terms

Automatically check gymnasium.farama.org including all subpages at once!

Try for free
Guaranteed free of charge during trial period.

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