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Developer Tools

Format, encode, decode and generate for developers.

JSON Formatter

Prettify, minify and validate JSON.

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JSON Validator

Check whether a JSON string is valid.

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Base64 Encoder/Decoder

Encode text to Base64 and decode it back.

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URL Encoder/Decoder

Percent-encode or decode URL query strings.

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UUID Generator

Generate one or many UUID v4 identifiers.

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Timestamp Converter

Convert between Unix timestamps and human-readable dates.

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Hash Generator (SHA-256)

Generate a SHA-256 hash from any text using the Web Crypto API.

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Color Converter

Convert between HEX and RGB with a live preview.

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Regex Tester

Test JavaScript regular expressions with live matches.

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QR Code Generator

Generate a QR code for any URL or text, and download as PNG.

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JSON Minifier

Minify JSON by removing extra whitespace after validating it.

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HTML Entity Encoder/Decoder

Encode or decode HTML entities like lt, gt, amp and quotes.

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JWT Decoder

Decode JWT header and payload in your browser without verification.

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URL Parser

Break a URL into protocol, hostname, path, query parameters and hash.

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UTM Builder

Build campaign URLs with UTM source, medium, campaign, term and content.

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Quick picks

Popular developer tools

4 tools
JSON FormatterPrettify, minify and validate JSON.Base64 Encoder/DecoderEncode text to Base64 and decode it back.Regex TesterTest JavaScript regular expressions with live matches.QR Code GeneratorGenerate a QR code for any URL or text, and download as PNG.

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Help

Frequently asked questions

Are these tools free?

Yes. Toolsaly tools work without login or subscription.

Is my data uploaded?

Most tools process your input in the browser and do not upload it.