Tools | やーはり

UTILITIES

A small collection of browser-only tools. Nothing you type or generate is ever sent to a server — everything runs right where you are.

Password Generator

Generate a random password by choosing length and character types. Runs entirely in your browser.

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JSON Formatter / Diff

Format and validate JSON. Compare two JSON objects and see a diff.

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Base64 / URL Encoder

Encode and decode text or files using Base64 or URL encoding.

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Color Palette Generator

Pick one color and generate complementary, analogous, and triadic palettes.

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Typography Preview

Adjust font, size, weight, and spacing to preview text rendering in real time.

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Markdown ↔ HTML Converter

Write Markdown and see it rendered or converted to HTML in real time.

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Text Counter

Count characters, words, lines, bytes, and reading time all at once.

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YAML ↔ JSON Converter

Convert between YAML and JSON. Useful for config file transformations.

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Image Color Analyzer

Upload an image to extract its dominant colors with hex codes and percentages.

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HTTP Status Code Dictionary

All status codes explained in one sentence. Real-time search by code, name, or description.

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Commit Message Generator

Generate Conventional Commits messages in seconds. Supports gitmoji.

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Meme Generator

Upload an image, add top and bottom text, and download your meme.

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Excuse Generator

Generates random excuses for various situations. Use at your own risk.

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Cookie Clicker

Click cookies, buy upgrades, and automate production in this idle game.

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Typing Speed Test

Measure your typing speed (WPM / CPM) and accuracy in English or Japanese.

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Yardle

A Wordle clone — guess the 5-letter word in 6 tries. Yahari edition.

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Mouse Music

Move your cursor to make music — X is pitch, Y is octave. Powered by Web Audio API.

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NoneAI Image Generator

Algorithmic image generation with zero AI — just math and code.

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