Category
Dev Tools
Developer-focused utilities for formatting, encoding, tokens, and IDs.
QR Code Generator
Generate downloadable QR codes as PNG or SVG with size, error correction, margin, and color controls.
JSON Formatter & Validator
Validate, prettify, minify, and copy JSON with indent and key-sorting options in one fast tool.
Base64 Encode / Decode
Encode or decode Base64 text safely in your browser with quick copy and example support.
URL Encode / Decode
Encode or decode URL strings and components instantly in your browser.
JWT Decoder
Decode JWT header and payload locally in your browser for quick token inspection.
UUID Generator
Generate one or many UUID v4 values instantly with copy and export options.
SHA-256 Hash Generator
Generate SHA-256 hashes in hex or Base64 format directly in your browser.
About Dev Tools
Toolnetix Dev Tools are lightweight utilities built for day-to-day engineering work, from formatting data and encoding strings to inspecting tokens and generating secure hashes. These tools run directly in your browser, so your input stays private and never needs to be uploaded. Use JSON formatting for API debugging, Base64 for payload handling, URL encoding for query strings, JWT decoding for claim inspection, UUID generation for identifiers, and SHA-256 hashing for deterministic checks.
Common Use Cases
- Format and validate JSON responses while debugging APIs.
- Encode or decode Base64 strings for payloads and test data.
- URL-encode query values and safely decode parameters.
- Decode JWT tokens to inspect header and payload claims.
- Generate UUID v4 values for tracing and fixtures.
- Compute SHA-256 hashes for integrity checks and comparisons.
Popular Workflows
Inspect authentication tokens safely
Create and share a QR quickly
Learn and compare
Related Tools
QR Code Generator
Generate downloadable QR codes as PNG or SVG with size, error correction, margin, and color controls.
JSON Formatter & Validator
Validate, prettify, minify, and copy JSON with indent and key-sorting options in one fast tool.
Base64 Encode / Decode
Encode or decode Base64 text safely in your browser with quick copy and example support.
URL Encode / Decode
Encode or decode URL strings and components instantly in your browser.
JWT Decoder
Decode JWT header and payload locally in your browser for quick token inspection.
UUID Generator
Generate one or many UUID v4 values instantly with copy and export options.
SHA-256 Hash Generator
Generate SHA-256 hashes in hex or Base64 format directly in your browser.
Related Categories
Frequently Asked Questions
Are Toolnetix Dev Tools free to use?
Yes. All Dev Tools are free and require no registration.
Is my input stored or uploaded?
No. Dev tools run locally in your browser for privacy.
Does the JWT Decoder verify signatures?
No. It only decodes token parts for inspection.
Is SHA-256 reversible?
No. SHA-256 is a one-way hash and cannot be decrypted.
Can I use these tools on mobile?
Yes. Tool pages are responsive and mobile-friendly.