ABOUT justkit

# WHO

JustKit is built by AuvaLabs, a small studio that ships bookmark-worthy reference sites. Sister to JustCalc (global utility calculators) and GulfCalc (UAE-specific). Same philosophy across all three: tools that respect your time and your data.

# WHAT

22 client-side developer tools - JSON formatter, JWT decoder, regex tester, cron builder, Base64, UUID, hashes, timestamp, color, markdown, lorem ipsum, HTML entities, URL encode, QR codes, CIDR/subnet, text diff, image-to-base64, CSS gradient, favicon, secure token, password strength, YAML/JSON. Plus 5 long-form explainers in /learn.

# WHY

Searching for "json formatter" or "jwt decoder" leads to a long list of results, most of which sit behind cookie banners, sign-up walls, three ads above the fold, and "AI Code Helper" upsells. The work itself takes one line of code. JustKit is the version without the funnel - open the tool, paste, copy, close the tab.

# HOW // technical

• Static HTML + a single ~30 KB CSS file + per-page inline JavaScript.
• No frameworks. No build step. No npm install required to read the source.
• Every tool runs in your browser. Network tab shows zero requests after page load.
• No fingerprinting, no cookies beyond traffic-stats beacons (see privacy). localStorage only - and only when you opt in by interacting.
• Hashes computed via the Web Crypto API. JWT parsed via vanilla atob + JSON.parse. Standards-compliant per RFC 7519, RFC 4648, RFC 9562.
• Served from Cloudflare. Standard request logs only - never exported, never analysed.

# DISCLAIMER

JustKit is a reference toolset. Output is accurate to the standard cited. For production cryptographic operations, prefer libraries audited by your security team over any client-side web tool, including this one.

# CONTACT

Spotted a bug, want to suggest a tool, or have feedback? Email [email protected].