DEV Community: js1024

JS1024 Is Back – Build a Mind-Blowing Demo in Just 1024 Bytes!

js1024 — Tue, 01 Jul 2025 19:20:37 +0000

Demoscene meets JavaScript again — and this time, it’s leaner, meaner, and more creative than ever. Theme: CREEPY

Whether you’re a canvas wizard, a WebGL artist, or a pure HTML hacker, JS1024 2025 Edition is your playground. The only rule: make something impressive in 1 kilobyte of code or less.

📅 Competition Timeline

🟢 July 1 – Contest starts & submission form opens
⌛ July 15 – Submission deadline
🗳️ July 15–31 – Rating period
🏆 Early August – Winners announced

🧠 What is JS1024?

JS1024 is a code golf + art competition. The goal is to create something amazing using JavaScript, HTML, or GLSL — but you’re only allowed 1024 bytes total. That’s right, your entire project must fit in just 1 KiB.

You can submit demos, visual experiments, animations, shaders, games, generative art — anything that fits the limit and blows minds.

🎨 Categories You Can Compete In

Classic Canvas (JS)
Use canvas, document, and JS tricks. You’ll be given variables like a, b, c, d, and M (mobile boolean).
Shader Demo (GLSL)
Think Shadertoy-style entries. WebGL 1, GLSL ES 1.0, and a 16:9 canvas with built-in inputs:
iResolution, iTime, iTimeDelta, iFrame, iMouse, iDate
No Shim (HTML)
No preloaded helpers, no assumptions. Start with a blank HTML file and go wild.

📏 The Rules (Short and Sharp)

Max file size: 1024 bytes total (JS/HTML/GLSL)
No external files or dependencies
No analytics, tracking, or shady code
Keep your private participant key safe — it's used for rating
You may include a readable, commented version for learning purposes (optional, but awesome)

🏆 Prizes & Bragging Rights

Winners from each category get money, spotlight, and top rankings
Finalists get eternal dev clout in the JS1024 Hall of Fame
But most importantly: you’ll earn respect from hardcore coders who live for byte-sized perfection

🧑‍💻 How to Join

It’s 100% free. No sign-up friction. Just:

Go to https://js1024.fun
Read the rules
Submit your demo by July 15, 2025

👑 Why It Matters

JS1024 isn’t about winning a prize — it’s about mastering your craft under pressure, flexing your code golf muscles, and joining a tradition of minimalistic genius.

Join the demoscene revival. Write art in 1024 bytes. Prove your skill.

🔗 Links

See you in the source code.
Tag your posts with #js1024 and show us what you’ve got.

Demoscene Competition in 1024 Bytes of JavaScript - JS1024 2024 Edition

js1024 — Sun, 14 Jul 2024 16:38:23 +0000

JS1024 is Back for 2024!

Get ready for a thrilling challenge! JS1024 returns, pushing developers to their limits by creating stunning demos in JavaScript, HTML, or GLSL, all within a 1024-byte limit. Whether you're a seasoned coder or a newcomer, this is your chance to shine and showcase your creativity and technical skills.

Timeline:

1st July - Theme announcement and competition start; submission form opens.
19th July - Submission deadline; form closes and rating period begins (extended).
1st August - End of rating period.
Early August - Winners announced!

Demo Categories:

Classic Canvas:
Utilize the canvas element (a), body element (b), 2D context (c), document element (d), and a boolean indicating mobile (M).
Shader Demo:
Structure like a Shadertoy demo (WebGL1/GLSL ES 1.0). The canvas is responsive with a fixed 16:9 ratio. Inputs include iResolution, iTime, iTimeDelta, iFrame, iMouse, and iDate.
No Shim:
Start with an empty HTML file. Anything is allowed, including 2D canvas and 3D.

Rules:

Source code must not exceed 1 KiB.
No malicious or harmful code.
Do not extract personal data from users.
No external files allowed (scripts and images will be blocked).
Keep your private participant key confidential; it is used for rating other projects.
Optionally upload a readable version of your code with comments to help others understand it.

Submit Your Project:

The deadline for submissions has been extended to Friday, 19th July 2024, at 9:00 PM (GMT+00:00). Don’t miss this opportunity to be part of an exciting and innovative community event.

For more details, visit the JS1024 website. Participation is free—good luck!

Demoscene competition in 1024 bytes of JavaScript - JS1024 started

js1024 — Wed, 05 Jul 2023 06:29:43 +0000

JS1024 is a competition where people submit short demos under 1024 bytes, made in JS, HTML or GLSL.

Some of you might be familiar with JS1K or js13kGames. Both of them are code-golfing competitions. "Code golf" is a type of recreational computer programming competition in which participants strive to achieve the shortest possible source code that solves a certain problem.

Timeline:

• 1st of July - theme is announced, competition starts, submission form is open
• 15th of July - deadline!!! submission form is closed, you can rate other projects
• 1st of August - no more ratings!
• a few days later - boom, the results are published and winners are announced

Demo Categories

Classic Canvas
• a = the canvas element
• b = the body element
• c = the 2d context
• d = the document element
• M = a bool that indicates if the user is on mobile

Shader demo
• Write your entry like a Shadertoy demo (WebGL1 / GLSL ES 1.0 only)
• Canvas is responsive but its ratio is fixed: 16/9
• Shader inputs: iResolution (w, h), iTime (float), iTimeDelta (float), iFrame (int), iMouse (x, y, clickx, clicky), iDate: float

No shim
• It's an empty HTML file, lol. You start from scratch. Anything is allowed (2d canvas, 3d, etc...)

Rules

• Your source code mustn't take up more than 1 KiB
• No malicious/harmful code allowed
• You're not allowed to extract personal data from users
• No external files allowed (external scripts and images will be automatically blocked)
• Do not share your private participant key. You will use it to rate other projects
• Upload a readable version (+ comments) of your code to help people understand it (optional)

Press here for more details. Check it out, the entry is free. Good luck!

JS1024, the most challenging JavaScript/GLSL competition

js1024 — Thu, 07 Jul 2022 16:20:55 +0000

JS1024 is a competition where people submit short demos under 1024 bytes, made in JS, HTML or GLSL.

Timeline:

Demo Categories

Classic Canvas
• a = the canvas element
• b = the body element
• c = the 2d context
• d = the document element
• M = a bool that indicates if the user is on mobile

No shim
• It's an empty HTML file, lol. You start from scratch. Anything is allowed (2d canvas, 3d, etc...)

Rules

Press here for more details. Check it out, the entry is free. Good luck!

JS1024 started! Javascript & GLSL competition

js1024 — Sat, 04 Jul 2020 13:30:33 +0000

JS1024 is a online contest where people submit short programs under 1024 bytes, made in JS, HTML or GLSL.

Some of you might be familiar with JS1K or js13kGames. Both of them are code-golfing competitions. JS1k ended last year, so I thought it will be nice to recreate it because some of the demos from there were amazing!

JS1024 started on 1st of July and ends on 15th of July.

These are the rules:
• Your code must have a maximum of 1 KiB of code
• No malicious/harmful code allowed
• It's not allowed to extract personal data from users
• No external files allowed (external scripts and images will be automatically blocked)
• Do not share your private participant key (you will use it to rate other projects)
• You should also upload a readable (and commented) version of your code to help people understand it

Sounds easy, right?

There are also 4 categories:
• Classic canvas (JS, context 2d)
• p5.js project (JS)
• Shader demo (GLSL)
• No shim (HTML, everything is made from scratch)

The person with the highest rating in each category gets the fabulous #1 place and some money.

Press here for more details. Check it out, the entry is free.

Good luck!