Free Browser-Based Developer Tools
Generate barcodes, QR codes, passwords & more.
Runs entirely in your browser — nothing leaves your device.
Generate Code 128 barcodes in bulk. Paste values, generate, and export all as a single print-ready PDF.
Generate Apple 2D codes with Part Number, Box ID, Serial & IMEI in V3, V4, V6 format.
Enter your network name, password, and security type. Scan to connect — no typing needed.
Enter a name, phone, email, and company. Scan to save the contact in a single tap.
Calculate the minimum safe print size for any QR code based on content and error correction level.
Paste Markdown and instantly see a rendered preview. Supports headings, code blocks, links, and more.
Generate cryptographically secure passwords with custom length, character sets, and bulk generation.
Write or paste HTML and see a live preview instantly. Scripts run in a sandboxed iframe.