Metroxe/one-html-page-challenge

Can you create something cool without modern tools?

HTML

1,408

538 commits

updated Sep 21, 2026

See the code

README

One HTML Page Challenge

The goal is to create anything you want within 1 single html file. Practice your skills with the barebones of web development. How creative can you be with such restrictions?

View Submissions

Rules

  • You must write all of your code in 1 single HTML file.
  • Your file must be less than 1mb (measured by the file size on github).
  • You cannot import any external files (this means you cannot import images, stylesheets or js files from external sources).
  • Due to the nature of hiding lots of functionality behind APIs, you cannot have any incoming or outgoing network requests.
  • You are allowed to use libraries, however the library must be hard coded into a script tag and still must fit under the 1MB file size. (I suggest using a cdn and replacing with hardcoding the minified library at the end, or use JSCompress).

How to Submit

  1. Fork the repository.
  2. Add your html file to the /entries directory with required meta tags in the <head> section:
    <meta name="description" content="Brief description of your entry">
    <meta name="author" content="Your Name">
    <meta name="github" content="your-github-username">
    
  3. Commit to your forked repo.
  4. Make a pull request to master from your forked repo.

Note: The entries.js file is now automatically generated from your HTML meta tags! No manual editing required.

* You may submit as many entries as you'd like.

Publicity

If you write a blog or post about the challenge, feel free to add to the list

Stargazers over time

Contributors

canvas
challenge
chrome
coding-challenge
css
es6
game
github-pages
html
html5
html5-canvas
html5-game
html-css
javascript
javascript-challenges
oldschool
open-source
retro
webdesign
webdevelopment

Metroxe/one-html-page-challenge

Can you create something cool without modern tools?

HTML

1,408

538 commits

updated Sep 21, 2026

See the code

README

One HTML Page Challenge

The goal is to create anything you want within 1 single html file. Practice your skills with the barebones of web development. How creative can you be with such restrictions?

View Submissions

Rules

  • You must write all of your code in 1 single HTML file.
  • Your file must be less than 1mb (measured by the file size on github).
  • You cannot import any external files (this means you cannot import images, stylesheets or js files from external sources).
  • Due to the nature of hiding lots of functionality behind APIs, you cannot have any incoming or outgoing network requests.
  • You are allowed to use libraries, however the library must be hard coded into a script tag and still must fit under the 1MB file size. (I suggest using a cdn and replacing with hardcoding the minified library at the end, or use JSCompress).

How to Submit

  1. Fork the repository.
  2. Add your html file to the /entries directory with required meta tags in the <head> section:
    <meta name="description" content="Brief description of your entry">
    <meta name="author" content="Your Name">
    <meta name="github" content="your-github-username">
    
  3. Commit to your forked repo.
  4. Make a pull request to master from your forked repo.

Note: The entries.js file is now automatically generated from your HTML meta tags! No manual editing required.

* You may submit as many entries as you'd like.

Publicity

If you write a blog or post about the challenge, feel free to add to the list

Stargazers over time

Contributors

canvas
challenge
chrome
coding-challenge
css
es6
game
github-pages
html
html5
html5-canvas
html5-game
html-css
javascript
javascript-challenges
oldschool
open-source
retro
webdesign
webdevelopment

Project health

Latest release

3.3.9 · Jun 10, 2024

Releases this year

0

Significant stargazers

ddelange

106 followers · starred Sep 2024

Rob Larsen

551 followers · starred Apr 2025

Ricardo Fernández Serrata

83 followers · starred Feb 2022

Ben Kunkle

32 followers · starred Oct 2021