HN Showcase
Back to browse
Free in-browser sprite sheet packer and slicer with JSON export

Free in-browser sprite sheet packer and slicer with JSON export

by dafin·Mar 6, 2026·2 points·0 comments
Visit ProjectView on HN

AI Analysis

●●SolidSolve My ProblemCozy

Free, browser-based sprite packer beats paywalled tools like TexturePacker.

Strengths
  • •Zero-friction workflow: no download, login, or server upload required.
  • •Dual mode (packer + slicer) covers both creation and extraction use cases.
  • •JSON export compatible with Phaser, Unity, Godot out of the box.
Weaknesses
  • •Limited advanced features compared to TexturePacker (no rotation, limited optimization).
  • •Niche audience—only relevant if you're already packing sprites regularly.
Target Audience

Game developers, indie developers using Phaser, Unity, Godot

Similar To

TexturePacker · Aseprite · Free Texturepacker Online

Post Description

Built this because I kept needing a quick sprite sheet tool while working on side projects and everything either required a download or had a paywall.

It runs fully in the browser, no upload to a server, no login. Supports: - Packer mode: upload separate frame PNGs, reorder them, export as atlas + JSON - Slicer mode: upload an existing sheet, define rows/columns, split into frames - JSON metadata compatible with Phaser, custom WebGL renderers etc.

Works with Unity and Godot workflows too. Would love feedback on what's missing.

Similar Projects

AI/ML●●Solid

Sprite sheets from prompts (Codex skill)

Copilot Skill generates consistent 4-direction sprite sheets better than Leonardo.ai.

Niche GemShip It
super135799
201mo ago
Gaming●Mid

Simple Sprite Sheet Generation

Wraps Grok image-to-video for sprites, but Aseprite and Leonardo already dominate this niche.

Ship ItCozy
armcat
3020d ago
Design●●Solid

Top Down Sprite Maker – The ultimate pixel art character creator

The real hook is the style-pack system: each sprite style ships as a ZIP that defines animations, layers and frame sizes so you can swap visual pipelines without hacking the app. Smart layering rules and constrained randomization make it fast to iterate characters, and the export controls (sequencing, layout, per-frame sizing) show the author thought about real game pipelines. It’s not revolutionary — desktop Java + paid style ecosystem limits reach — but it’s a useful, focused tool for pixel-art workflows.

Niche GemSlick
flinkerflitzer
103mo ago