Developer Tools

Fast browser-based utilities for developers — generate secure passwords, encode and decode data, and more. Everything runs locally; nothing you enter is uploaded.

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JSON Formatter

Beautify, validate or minify JSON, with clear error messages.

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Password Generator

Create strong, random passwords with adjustable length and character sets.

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Base64 Encode / Decode

Convert text to Base64 and back, with full Unicode support.

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URL Encoder / Decoder

Percent-encode text for links and query strings, or decode it back.

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UUID Generator

Generate one or many random version 4 UUIDs, then copy them.

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Hash Generator

Create SHA-256, SHA-1, SHA-384 and SHA-512 hashes from any text.

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Timestamp Converter

Convert Unix epoch time to a date and back, in UTC and local time.

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HTML Entity Encoder

Escape text into HTML entities or decode them back to plain text.

Free online developer tools

Small utilities that developers reach for constantly — encoding a string, generating a secure password, checking a value — collected in one place and built to run entirely client-side. Because the work happens in your browser, sensitive input like passwords and tokens never travels to a server.

The category is growing. Right now you'll find a JSON formatter, a password generator, a Base64 encoder/decoder, a URL encoder, a UUID generator, a hash generator, a timestamp converter and an HTML entity encoder, with more encoders, formatters and generators on the way.