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Free Developer Tools Online – JSON Formatter, Base64, Hash & QR Code Generator | HP ToolsHub

Free Online Developer Tools

Essential utilities for web developers and software engineers. Format JSON, decode Base64, compute cryptographic hashes, test regex patterns, and generate QR codes.

Supported Formats & Specifications

PDFJPGPNGWebPSVGJSON

How to Use Free Online Developer Tools

  1. 1
    Select Tool Click any tool card in this category.
  2. 2
    Upload or Configure Add your file or enter numbers.
  3. 3
    Instant Result Download or copy your output without waiting.

Key Features & Capabilities

  • ✓ JSON Formatter & Validator with syntax highlighting and tree view.
  • ✓ Base64 Encoder / Decoder for text and binary strings.
  • ✓ Cryptographic Hash Generator (MD5, SHA-1, SHA-256, SHA-512).
  • ✓ QR Code Generator with custom color and logo options.

Privacy & Local Processing Guarantee

All operations execute locally in your web browser with zero server file uploads.

Frequently Asked Questions

Is my data safe when using the JSON formatter or Base64 tool?

Yes! All formatting, decoding, and hashing runs 100% locally in your browser. No strings are ever transmitted over the network.