QRコードの生成
任意のテキストまたは URL から QR コードを生成します。無料のオンライン QR コード ジェネレーター。
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Generate QR codes from any text, URL, email address, or contact information. Download as PNG or SVG in custom sizes and colors. Widely used for marketing materials, business cards, product packaging, and event tickets.
QRコードの生成 — 使い方
- 1 Enter the text, URL, or data to encode
- 2 Customize size and colors if needed
- 3 QR code is generated instantly
- 4 Download the QR code as PNG or SVG
よくある質問
URLs, plain text, email addresses, phone numbers, WiFi credentials, vCard contacts, and more. URLs are the most common use case.
For print, use at least 300x300 pixels or SVG for infinite scalability. For digital use, 200x200 pixels is typically sufficient.
No. QR codes are static and never expire. The encoded data is embedded directly in the pattern and does not depend on any external service.
