Devtools

Developer tools I actually use.

A growing collection of small, fast utilities — formatters, encoders, generators and more. All client-side: nothing you paste ever leaves your browser.

Web

JWT Decoder

Decode JWT header, payload and claims — with optional signature verification.

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Encode

Base64 Encode / Decode

Encode or decode Base64 (standard and URL-safe), UTF-8 aware.

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Format

JSON Formatter

Beautify or minify JSON — best-effort formatting even when it’s invalid.

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Format

XML Formatter

Beautify or minify XML — best-effort formatting even when it’s incomplete.

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Crypto

HMAC Generator

Compute and verify HMAC signatures (SHA-1/256/384/512) with a secret key.

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Web

SAML Decoder

Decode Base64/DEFLATE SAML to XML, and decrypt EncryptedAssertion with a private key.

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Generate

QR Code Generator

Turn text or a URL into a QR code — colors, error correction, center logo, PNG/SVG download.

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Web

API Client

Send HTTP requests with custom headers, body, redirect and cookie control — right in your browser.

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Web

URL Shortener

Shorten a long URL to an s.bitsar.net link, with a QR code you can copy as a data URL.

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Generate

UUID Generator

Generate RFC-4122 v4 UUIDs in bulk, with one-click copy.

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