Free, fast, privacy-friendly online tools. Runs 100% in your browser — no install, no signup, no upload.
⚡ 5 tools · client-side · free foreverPaste JSON to pretty-print, minify, or validate. Nothing leaves your browser.
Convert between Unix epoch and human-readable dates.
Shrink JPEG/PNG in your browser via canvas. Files never leave your device.
Turn text or a URL into a scannable QR code. Download as PNG.
Length, weight, temperature, and more.