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    Developer utilities, electronics calculators, converters and security tools from electronmagazine.com — all running privately in your browser.

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    Markdown Previewer

    Write Markdown and see a sanitized HTML preview instantly.

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    URL Encoder/Decoder

    Percent-encode or decode URLs and query string components.

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    Case Converter

    Switch text between UPPER, lower, Title, camelCase, snake_case and kebab-case.

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    Word & Character Counter

    Count words, characters, sentences, paragraphs and reading time.

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    Color Converter

    Convert colors between HEX, RGB and HSL with a live swatch.

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    Password Generator

    Create strong random passwords using a cryptographically secure source.

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    Hash Generator

    Generate SHA-1, SHA-256 and SHA-512 hashes locally with Web Crypto.

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    Unix Timestamp Converter

    Convert Unix epoch seconds to human dates and back, in UTC and local time.

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    Binary / Decimal / Hex Converter

    Convert numbers between binary, octal, decimal and hexadecimal.

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    Voltage Divider Calculator

    Calculate output voltage of a two-resistor divider, with a live diagram.

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