QR & Barcodes Tools

Barcode and QR reference and tools: QR, CODE128, Code 39 and EAN-13 compared on capacity, character set and scanning distance, error correction levels.

二维码与条形码速查表 (QR & Barcodes) is a frequently consulted reference for developers. Keeping the reference and ready-to-use tools on one page cuts the cost of switching back and forth. All tools below run locally, are free, and need no sign-up.

Related Tools

🟪QR Code GeneratorGenerate QR codes as PNG data URLs from text or URLs with custom colours and sizes. Embed links, contacts and Wi-Fi credentials in scannable images. PNG output.
📊Barcode GeneratorGenerate barcodes in 20+ formats: CODE128, EAN13, EAN8, UPC, CODE39, ITF14, MSI, pharmacode and more. Download as PNG or SVG and set the checksum in one click.
📶Wi-Fi QR Code GeneratorGenerate QR codes that auto-connect to a Wi-Fi network with full WPA and WEP support, so guests can join by scanning instead of typing a long Wi-Fi password.