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Tool Directory

A collection of tools built by UhiyamaLab. Every web tool runs in the browser and processes data locally for safe use.

v4.0.02026/06/13
Visual

Image Pixelizer

A browser-based tool that converts images into pixel art while preserving the original color balance...

v2.0.02026/06/13
Visual

Manga Speech Bubble Studio

Create custom speech bubble images for manga, illustration, and design work. Freely adjust the shape...

v1.2.02025/12/04
Visual

UI Sample Image Generator

Generate placeholder images for app, website, and game UI design. Customize size, colors, and text t...

v1.2.02025/12/04
Visual

Mosaic Pixelizer

Automatically calculate mosaic size from one-hundredth of the long edge. Apply mosaic, blur, or fill...

Sponsored
v1.0.02026/04/04
Visual

Arrow Image Maker

Extend an arrow in any direction from the center, customize color and border, and download as a tran...

v2.1.02025/10/15
Illustration

Character Color Analyzer

Analyze the color balance of character illustrations locally in your browser. Upload an image to vis...

v1.2.02025/10/16
Illustration

Character Color Pattern Maker

Remix character illustration colors based on color theory. Keep skin tones fixed while replacing hai...

v1.2.02025/10/15
Illustration

Character Color Navigator

A palette assistant focused on character color design. Pick a base color and get attractive color sc...

Sponsored
v1.1.02025/10/16
Illustration

Hand Trace Camera

Overlay an illustration like tracing paper and photograph real hand poses as drawing reference. Desi...

v2.1.02025/12/04
Game

Quick Sound FX Generator

Create sound effects quickly in your browser with an intuitive XY pad. Export WAV files for games, v...

v3.1.02025/12/04
Game

Catan Board Generator

A fan-made tool that generates balanced starting boards for Catan. High-probability numbers and adja...

v1.4.02025/12/04
Management

Progress Checksheet Maker

Generate printable progress checksheets by choosing a cover and page range. Useful for tracking book...

Sponsored
v1.1.02026/05/07
Management

Focus Deadline Calendar

Generate a landscape A4 calendar by entering a task name and date range. Optimized for one to six mo...

Sponsored