Online Developer & Audio Tools

Fast, private, and local-first online tools.

Development & Data Processing

Common tools for encoding, encryption, formatting and table conversion

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JSON Format

Format, minify and validate JSON data

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64

Base64

Base64 encoding and decoding

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AES Encryption

AES symmetric encryption and decryption

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Timestamp Converter

Two-way conversion and calculation between Unix timestamps and date-time

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XLS

Markdown to Excel

Convert MD tables to Excel, download or copy to paste

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Image & Icon Conversion

Lightweight conversion tools for favicons, transparent images and frontend assets

ICO

SVG to ICO

Convert vector graphics to multi-size favicons

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PNG

SVG to PNG

Convert vector graphics to transparent PNG images

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Audio & Device Testing

Test headphones, speakers, channels and basic audio response

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Tone & Noise Generator

Generate test tones and white/pink/brown noise

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L R

Left / Right Channel Test

Check headphone and speaker left/right channels with rhythmic beeps

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Screen & Utility Tools

Utilities for presentations, reading and keeping pages visible for longer

AWAKE

Keep Screen Awake

Keep the screen awake with one click

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♢All tool processing happens in your browser. Your input is never uploaded.