Game Development Utilities

Practical browser tools for indie game creators, from store artwork preparation to production handoffs.

Steam Capsule & Art Preview Generator

Crop, preview, and format official Steam store capsules and library assets with live mockup inspection and safe zone verification.

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Itch.io Web Game Inspector & Live Resolution Optimizer

Upload HTML5 export files or ZIP archives to test viewports live, fix aspect ratio scrollbars, inspect Godot and Unity WebGL builds, and generate copyable Itch.io dashboard embed settings.

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Sprite Sheet Packer and Extractor

Optimize 2D game performance by packing loose animation frames into texture atlases or extracting individual sprites from existing sheets client-side.

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Game Audio Loop Point Finder and Metadata Injector

Locate precise audio loop points, snap to zero crossings to eliminate clicks, and export WAV files embedded with LOOPSTART and LOOPEND metadata chunks for game engines.

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Game Save File Obfuscator and Editor

Decrypt, inspect, edit JSON payloads, and re-encrypt game save files using Base64, XOR masking, or plain text 100% locally in your browser.

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Godot and Unity Localization CSV Sanitizer

Inspect translation CSV or JSON files for empty cells, duplicate keys, and broken rows, then export a clean local copy ready for engine import.

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Steam BBCode, Markdown and HTML Converter

Convert between Steam BBCode, Markdown, and HTML in both directions with automatic syntax detection, nested list support, and a live preview.

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Retro Sound Effect Generator for Games

Create short retro game sound effects in your browser with instant presets, waveform controls, a live oscilloscope, and one-click WAV export.

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Pixel Art Palette Swapper

Reduce sprites and spritesheets to classic console palettes or a custom set of hex colors directly in your browser.

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Game UI Accessibility Stress Tester

Inspect a game screenshot locally with color vision simulations, HUD contrast probes, blur, downscale, edge collapse heatmaps, and exportable review findings.

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Hitbox and Hurtbox Animator for Sprites

Draw collision layers on every sprite frame, preview them with onion skins, edit exact pixel coordinates, and export engine neutral JSON without uploading artwork.

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Damage Formula Lab with TTK Charts

Compare safe game damage formulas through live curves, attack and defense heatmaps, rounding breakpoints, criticals, hits to kill, and time to kill.

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Game Delta Time and Fixed Timestep Lab

Compare variable and fixed timestep game loops with repeatable frame spikes, simulated motion, catch up steps, and visible time drift.

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# Tools for the craft of game development

Game development is a chain of small decisions: a composition must survive several storefront formats, an icon must remain readable at a glance and a production task must be easy to repeat. This category collects focused utilities for people who build, publish and promote games. Each tool is designed to turn a narrow but frustrating workflow into a clear browser interaction.

# Made for independent creators

Indie teams often move between art software, publishing dashboards and review folders without a dedicated production department. A useful utility should shorten that handoff, expose the important decisions and keep the creator in control of the source files.
  • Focused workflows with visible outputs
  • Local browser processing where practical
  • Clear dimensions and export states
  • Guidance that complements official platform documentation
Use these tools as a preflight layer. Keep your source project files, compare final exports with the platform owner's current requirements and ask a teammate to review the smallest output.