The LaunchTower Pixel-Art Toolkit: 30+ Free Browser Tools, One Link

Quick link: everything lives at pennypenguinapp-beep.github.io — no install, no login, no ads.

I've been building free, in-browser tools for pixel artists and 2D game devs. Each one is a single page you can open, use, and close. No accounts. No downloads. They run entirely in your browser.

Here's the full list, grouped by what they do.

Palette & Color

• Palette Converter — convert between Aseprite palettes and CSS variables. launchtower-palette-converter
• Palette CSS — generate a CSS custom-properties file from any palette. launchtower-palette-css
• Palette Contrast Checker — check WCAG contrast ratios between palette colors. launchtower-palette-contrast
• Palette Reducer — reduce a palette to N colors with a simple algorithm. launchtower-palette-reducer
• Palette Swap — swap colors across a sprite or image. launchtower-palette-swap
• Palette Extractor — extract a palette from any image. launchtower-palette-extractor
• Color Ramp Generator — generate smooth color ramps between two colors. launchtower-color-ramp
• Color Blindness Simulator — preview your art under deuteranopia, protanopia, tritanopia. launchtower-colorblind-sim

Sprite & Tile Editing

• Sprite Slicer — slice a sprite sheet into individual frames. launchtower-sprite-slicer
• Sprite Sheet Packer — pack individual sprites into a sheet. launchtower-sheet-packer
• Sprite Outline — add a 1px outline to a sprite. launchtower-sprite-outline
• Sprite Shadow — generate a drop shadow for a sprite. launchtower-sprite-shadow
• Sprite Transform — flip and rotate sprites. launchtower-sprite-transform
• Sprite Animation Previewer — preview frame-by-frame animation. launchtower-sprite-animation-previewer
• Sprite Embedder — embed a sprite as a data URI. launchtower-sprite-embedder
• Sprite Hitbox Editor — draw and export hitbox polygons. launchtower-hitbox-editor
• Sprite Collision Editor — edit collision shapes for sprites. launchtower-collision-editor

Tile & Tilemap

• Tilemap Editor — draw tilemaps with a simple grid editor. launchtower-tilemap-editor
• Tilemap Renderer — render a tilemap to canvas. launchtower-tilemap-renderer
• Tile Checker — check if a tile is seamless. launchtower-tile-checker
• Tile Variations — generate variations of a tile. launchtower-tile-variations
• Tile Merge — merge tiles into a single image. launchtower-tile-merge
• Autotile Viewer — preview autotile rules. launchtower-autotile-viewer
• Iso Tile Preview — preview isometric tiles. launchtower-iso-preview
• Tile Packs — free tile packs (forest, dungeon, ice, autumn, winter, toxic, ember). launchtower-tile-packs

Art & Effects

• Pixel Upscaler — upscale pixel art with nearest-neighbor. launchtower-pixel-upscaler
• Pixel Diff — compare two images pixel by pixel. launchtower-pixel-diff
• Dither Pattern Generator — generate dither patterns. launchtower-dither-gen
• Noise Texture Generator — generate noise textures. launchtower-noise-texture
• Normal Map Generator — generate a normal map from a height map. launchtower-normal-map
• Grid Overlay — overlay a grid on any image. launchtower-grid-overlay
• Resolution Planner — plan your pixel art resolution. launchtower-resolution-planner
• Font Builder — build a bitmap font. launchtower-font-builder
• Pixel Font Preview — preview a bitmap font. launchtower-pixel-font-preview
• Pixel Painter — paint pixel art in the browser. launchtower-pixel-painter
• Screenshot Framer — frame a screenshot with a pixel border. launchtower-screenshot-framer

Free Games (for fun, or as reference implementations)

• Star Drift — a space shooter. launchtower-star-drift
• Dungeon Crawl — a roguelike. launchtower-dungeon-crawl
• Pixel Invaders — a space invaders clone. launchtower-pixel-invaders
• Neon Breaker — a breakout clone. launchtower-neon-breaker
• Pixel Snake — a snake game. launchtower-pixel-snake
• Tank Duel — a tank shooter. launchtower-tank-duel
• Rocket Lander — a gravity game. launchtower-rocket-lander
• Frog Hop — a platformer. launchtower-frog-hop
• Maze Runner — a maze game. launchtower-maze-runner
• Cave Diver — a cave exploration game. launchtower-cave-diver
• Pixel Golf — a mini golf game. launchtower-pixel-golf
• Pixel Bowling — a bowling game. launchtower-pixel-bowling
• Pixel Fishing — a fishing game. launchtower-pixel-fishing
• Pixel Archery — an archery game. launchtower-pixel-archery
• Balloon Pop — a balloon popping game. launchtower-balloon-pop
• Bubble Pop — a bubble popping game. launchtower-bubble-pop
• Block Drop — a block dropping game. launchtower-block-drop
• Block Stack — a block stacking game. launchtower-block-stack
• Gem Grid — a gem matching game. launchtower-gem-grid
• Neon Dash — a dash game. launchtower-neon-dash
• Neon Cascade — a cascade game. launchtower-neon-cascade
• Orbit Dodge — an orbit dodging game. launchtower-orbit-dodge
• Pixel Hopper — a hopping game. launchtower-pixel-hopper
• Pixel Pong — a pong game. launchtower-pixel-pong
• Pixel Racer — a racing game. launchtower-pixel-racer
• Pixel Volley — a volleyball game. launchtower-pixel-volley
• Meteor Miner — a mining game. launchtower-meteor-miner
• Ninja Slice — a slicing game. launchtower-ninja-slice
• Rhythm Tap — a rhythm game. launchtower-rhythm-tap
• Tower Guard — a tower defense game. launchtower-tower-guard
• Crate Pusher — a Sokoban-style game. launchtower-crate-pusher
• Lane Merge — a lane merging game. launchtower-lane-merge
• Ice Slide — an ice sliding game. launchtower-ice-slide
• Asteroid Run — an asteroid dodging game. launchtower-asteroid-run
• Pixel Pinball — a pinball game. launchtower-pixel-pinball
• Mole Mash — a whack-a-mole game. launchtower-mole-mash
• Pattern Echo — a pattern matching game. launchtower-pattern-echo
• Memory Match — a memory game. launchtower-memory-match
• Slide Puzzle — a sliding puzzle. launchtower-slide-puzzle
• Color Flood — a flood fill game. launchtower-color-flood
• Lights Out — a lights out game. launchtower-lights-out
• Connect Four — a connect four game. launchtower-connect-four
• Word Ladder — a word ladder game. launchtower-word-ladder
• Word Grid — a word grid game. launchtower-word-grid
• Typing Sprint — a typing game. launchtower-typing-sprint
• Reaction Pixel — a reaction time game. launchtower-reaction-pixel
• Pixel Sudoku — a sudoku game. launchtower-pixel-sudoku
• Pixel Solitaire — a solitaire game. launchtower-pixel-solitaire
• Pixel Jigsaw — a jigsaw puzzle. launchtower-pixel-jigsaw
• Pixel Picross — a picross game. launchtower-pixel-picross
• Minefield — a minesweeper game. launchtower-minefield

What's next

I'm still building. If there's a tool you wish existed, tell me in the comments.

All tools are free. No accounts. No downloads.

→ Back to the hub: pennypenguinapp-beep.github.io