ToolShelf
4.8/5 rating from 250+ developers

Professional Online Tools for Developers

Format JSON, encode data, transform text, generate hashes - all in your browser with complete privacy

Join thousands of developers who trust ToolShelf for JSON formatting, Base64 encoding, text processing, and cryptographic hashing. All tools work offline and respect your privacy. No registration required, completely free forever.

Try JSON Formatter Browse All Tools
5
Professional Tools
100%
Free & Private
0ms
Server Delays

Choose Your Tool

Professional-grade tools that work offline and keep your data private

Available Popular

JSON Formatter

Format, validate and query JSON with real-time syntax highlighting, error detection, and JSONPath support.

  • Real-time validation with detailed errors
  • Format with custom indentation
  • Minify for production use
  • JSONPath queries and filtering
  • Syntax highlighting
JSON Validation Formatting JSONPath
Use Tool
Available

Base64 Encoder

Encode and decode Base64 strings instantly. Perfect for data encoding, API testing, and development work.

  • Encode text to Base64
  • Decode Base64 to text
  • File encoding support
  • URL-safe Base64 variants
  • Error handling and validation
Base64 Encoding API Testing
Use Tool
Available

Text Transformer

Transform text with powerful operations like case conversion, line sorting, duplicate removal and more.

  • Case conversion (upper, lower, title)
  • Sort lines alphabetically
  • Remove duplicates and empty lines
  • Trim whitespace and reverse text
  • Real-time processing
Text Processing Case Conversion Sorting
Use Tool
Available Popular

QR Code Generator

Generate custom QR codes for URLs, WiFi, contacts, SMS, email and more. Bulk generation, logo embedding, and multiple export formats.

  • Multiple QR types (URL, WiFi, Contact, SMS)
  • Custom colors and logo embedding
  • Bulk generation from CSV files
  • PNG and SVG export formats
  • Real-time preview
QR Codes WiFi Bulk Generation Logo
Use Tool
Available New

Hash Generator

Generate cryptographic hashes using multiple algorithms. Perfect for data integrity, security verification, and development.

  • MD5, SHA1, SHA256, SHA512 support
  • File hash generation
  • Batch hash processing
  • Hash comparison tools
  • Algorithm information guide
Hashing Security Verification MD5 SHA256
Use Tool

Why Choose ToolShelf?

Professional online tools designed with privacy, performance, and developer experience in mind

Privacy First

All processing happens locally in your browser. Your data never leaves your device or gets stored on our servers.

Works Offline

Once loaded, all tools work without internet connection. Perfect for secure environments and unreliable connections.

Lightning Fast

Real-time processing with instant results. No server delays, no waiting times, no performance bottlenecks.

100% Free

No registration, no subscriptions, no hidden fees. All features available to everyone, forever.

Mobile Friendly

Responsive design that works perfectly on phones, tablets, and desktops. Professional tools anywhere.

Developer Focused

Built by developers for developers. Keyboard shortcuts, real-time feedback, and professional features.

What Users Say

Frequently Asked Questions

Yes. All tools on ToolShelf are completely free with no sign-up, subscription, or hidden limits.
Yes. Most tools are fully offline-capable and run entirely in your browser once loaded. No internet connection is needed after that.
No. ToolShelf processes everything locally in your browser. We do not collect or store any text, files, or input data.
ToolShelf is designed for developers, writers, students, and anyone who needs fast, privacy-friendly utility tools like formatters, encoders, or text transformers.
ToolShelf includes a JSON Formatter, Base64 Encoder, Text Transformer, QR Code Generator, and Hash Generator — with more tools coming soon.
Yes! You can submit feature requests or feedback on our GitHub issues page or via our contact page.
See all FAQs →