Developer Utilities: JSON, Base64 & QR Code Guide
Updated August 22, 2026
Fast, private developer tools save hours during API debugging, auth token inspection, and data payload formatting. Here is how to use modern client-side utilities.
Use our Developer Tools suite to beautify messy JSON payloads, encode binary strings into Base64, decode JWT claims, and generate custom vector QR codes offline.
Formatting & Minifying JSON API Payloads
Unformatted single-line JSON responses are hard to read. Use JSON Formatter with 2-space or 4-space indentation to inspect keys and nested objects cleanly.
Base64 Encoding & URL Safety
Base64 translates binary data into ASCII text for safe HTTP header and URL transmission. Standard Base64 uses + and /, while URL-safe Base64 substitutes - and _.
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Frequently asked questions
Are my API secrets or Base64 payloads sent to a server?
No. All developer tools process input strings entirely within local JavaScript memory in your browser.