Developer Tools, Instantly.

No signup. No tracking. All processing in your browser.

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JSON Formatter

Format, validate & beautify JSON

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Base64 Encode/Decode

Encode & decode Base64 strings

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JWT Decoder

Decode & inspect JWT tokens

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Regex Tester

Test regex with highlighting

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URL Encode/Decode

Encode & decode URL components

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Timestamp Converter

Convert Unix timestamps to dates

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Cron Generator

Generate & explain cron expressions

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UUID Generator

Generate UUID v1 & v4

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Hash Generator

Generate MD5, SHA-1, SHA-256 hashes

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Color Converter

Convert between HEX, RGB, HSL

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Markdown Preview

Preview Markdown with live rendering

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Text Diff

Compare two texts and show differences

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HTML Entity Encode

Encode & decode HTML entities

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Lorem Ipsum Generator

Generate placeholder text

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Number Base Converter

Convert between binary, octal, decimal, hex

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QR Code Generator

Generate QR codes from text or URL