THE DEVELOPER COLLECTION / 11 FREE TOOLS
Free Developer Tools — JSON, Base64, QR Codes & More
Format JSON, encode or decode text, and create QR codes with practical browser tools. Supported operations are also available through the documented API and MCP endpoint.
JSON formatter ↗
Validate and format JSON locally.
FREE TO USE OPEN TOOL ↗Base64 converter ↗
Encode or decode UTF-8 text with Base64 locally.
FREE TO USE OPEN TOOL ↗QR code generator ↗
Create a downloadable QR code from text or a URL, locally.
FREE TO USE OPEN TOOL ↗Unix timestamp converter ↗
Convert Unix seconds or milliseconds into an ISO UTC timestamp.
FREE TO USE OPEN TOOL ↗URL encoder and decoder ↗
Encode or decode a URL component using percent encoding.
FREE TO USE OPEN TOOL ↗JSON minifier ↗
Validate and compact JSON by removing formatting whitespace.
FREE TO USE OPEN TOOL ↗CSV to JSON ↗
Parse quoted CSV with a header row into a JSON array.
FREE TO USE OPEN TOOL ↗JSON to CSV ↗
Convert a JSON array of flat objects into quoted CSV.
FREE TO USE OPEN TOOL ↗JWT inspector ↗
Inspect the header and payload of a JWT without verifying its signature.
FREE TO USE OPEN TOOL ↗UUID generator ↗
Generate cryptographically random UUID v4 identifiers.
FREE TO USE OPEN TOOL ↗SHA-256 hash ↗
Compute a SHA-256 digest of UTF-8 text.
FREE TO USE OPEN TOOL ↗Choose the tool for your task
Open a tool to use its interactive workspace, read the instructions and review its limitations. These tools are free, and local file workflows do not upload your files. Calculator outputs depend on the inputs and assumptions you choose.
Explore all Grasany tools ↗