QRコード生成

無料のQRコード生成ツール。テキスト、URL、または連絡先情報用のQRコードを、カスタムカラー、サイズ、余白、誤り訂正レベルで生成します。PNGとしてダウンロード。

Runs in your browserUpdated Apr 26, 2026

Text or URL

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Error correction

QR code preview will appear here.

よくある質問

›Is the QR code an image I can download?

Yes — download as PNG. You control the size, foreground/background colors, and error-correction level.

›Is there a character limit?

QR codes hold up to ~4,000 alphanumeric characters depending on error-correction level. Shorter inputs scan more reliably.

›What error-correction level should I pick?

L (7%) for short URLs in clean conditions. H (30%) for printed codes that might get damaged or have a logo overlaid.

›Can I add a logo?

Currently we generate clean codes. Download the PNG and overlay a logo with any image editor — error correction H tolerates that.

›Is the generator free?

Yes — fully free, no signup, no usage limits.