Hey Product Hunt! 👋

We built Digital Vault PRO (https://vault-pro.rashid-salimov...) because we got tired of pasting sensitive API payloads, JSON, and permission strings into ad-bloated online converters that store your data on remote servers.

Utilities in Vault process your files and text directly in your browser via modern web APIs:

• JSON to TypeScript interface generator

• Visual Cron expression builder & human explanation

• Linux Chmod permissions calculator & octal reference

• IPv4 CIDR subnetting calculator

• cURL to Code (Fetch, Python, Go, PHP)

• SVG to PNG/WebP scaler & image compressor

• Companion Telegram Mini App for on-the-go conversion

Everything is completely free and runs without sign-up. Would love to hear your feedback and suggestions for next tools!