Developer tools that stay fast.

Lightweight, privacy-friendly and offline-ready tools for backend developers and daily workflows.

🔐 Security & Encoding

JWT, hashing, encoding and authentication tools.

JWT Decoder
Decode JWT tokens locally.
JWT Encoder
Generate signed JWT tokens.
Base64 Encoder / Decoder
Encode and decode Base64 values.
Hash Generator
Generate secure hashes instantly.
Password Generator
Create strong random passwords.

🧾 Data & Formatting

Format, compare and inspect structured data.

JSON Formatter
Format and validate JSON instantly.

⚙️ Developer Utilities

Common backend and debugging utilities.

UUID Generator
Generate UUID v4 identifiers.
Timestamp Converter
Convert Unix timestamps instantly.
HTTP Status Codes
Search HTTP response codes.

🔳 Generators

Utility generators for everyday workflows.

QR Code Generator
Generate QR codes locally.

Free Online Developer Tools

Devdeck provides fast and lightweight tools for backend developers, debugging workflows, formatting, encoding and daily development tasks.

Offline-friendly and privacy-focused

All tools work directly in your browser with no signup, no tracking and no unnecessary complexity.

Request a Tool

Have an idea for a developer tool or found an issue? Open a request on GitHub.

github.com/devdeck-ir/devdeck/issues