カスタムQRコードデザイン: ロゴとブランドカラーを追加
ロゴ、ブランドカラー、フレームテキスト、読み取りやすい設定を備えたカスタムQRコードを2分以内で作成できます。QR-Buildは標準のQRマトリクス上にロゴ配置と色設定を適用するため、ブランド化したコードでも主要なスマートフォンカメラで読み取れます。
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QRコードを「カスタム」にする要素
QR-Build is a QR code generator at qr-build.com that supports logo upload, color customization, frame design, and export formats for print or digital use. A custom QR code is not a different QR standard; it is a standard QR matrix styled within scan reliability limits.
A module is a single dot or square in the QR code matrix. A finder pattern is one of the three square corner markers that helps cameras identify the code position and orientation. Custom QR code design can change module color, eye style, corner shape, and frame text, but the finder patterns and quiet zone still need to remain easy for scanners to detect.
The line between styled and broken is scannability. In our review, most failures came from oversized logos, low-contrast colors, missing quiet zones, or inverted color schemes rather than from customization itself.
Logo in the center
A center logo sits over the middle of the QR matrix and uses error correction capacity to preserve scannability. PNG with transparency or SVG is the cleanest logo format.
Custom module colors
Modules are the dots or squares that encode data. Use a dark module color on a light background and keep contrast at 4.5:1 or higher.
Frames and CTA text
A CTA frame adds context such as Scan to order, View menu, or Save contact. The frame should sit outside the quiet zone so it does not interfere with detection.
Corner styles and QR eyes
Finder patterns, often called QR eyes, can be styled as long as their position and contrast remain clear. Scanner apps use these corners to locate and orient the code.
Transparent background
A transparent background lets the QR code sit naturally on packaging, cards, or campaign artwork. Keep a visible quiet zone even when the exported file is transparent.
ロゴ付きカスタムQRコードの作り方
- 1
Choose your QR code type
Select the content type for your QR code, such as URL, vCard, PDF, WiFi, menu, or event. If you are unsure which format fits your goal, choose your QR code type before designing.
- 2
Enter your destination content
Type or paste the URL, contact details, menu link, PDF, or other destination content into QR-Build. This is the data the QR code will encode or redirect to.
- 3
Upload your logo
Upload a logo file in PNG with a transparent background or SVG format. QR-Build centers the logo in the QR matrix and uses high error correction when logo placement is applied.
- 4
Set your brand colors
Use the color picker to set the module color and background color. Keep dark modules on a light background and maintain a contrast ratio of at least 4.5:1.
- 5
Choose a frame and corner style
Select a frame template, adjust corner style, and add concise CTA text such as Scan to order, View menu, or Save contact. Keep decoration outside the quiet zone.
- 6
Preview and test the scan
Scan the live preview with at least two smartphone cameras before downloading. Testing catches low contrast, excess logo coverage, and missing quiet zone issues before the code reaches print.
- 7
Download in your preferred format
Download SVG for print because it scales without quality loss, or download PNG for digital use. For printed PNG files, use at least 1000 x 1000 px.
Logo size guidelines
A center logo should not cover more than about 30% of the QR matrix. This threshold follows the practical limit of error correction Level H.
Color contrast rules
Dark modules on a light background are the safest configuration. A 4.5:1 contrast ratio gives scanner apps enough luminance difference in normal lighting.
Print vs. digital export
Use SVG for business cards, packaging, posters, and flyers. Use PNG for websites, email, social posts, and other screen-only placements.
QR-Buildが対応するカスタムQRコードデザイン機能
Logo upload with transparent backgrounds
Upload PNG or SVG logo assets and place the mark in the center of the QR code. Transparent PNG avoids a visible white box and works well for product packaging, menus, and business cards.
Module color picker
Set foreground and background colors with brand hex values. QR-Build keeps the design workflow focused on dark modules, light backgrounds, and contrast choices that preserve scanning.
Eye and corner styles
Style the finder patterns and corner shapes while keeping the three QR eyes recognizable. The visual layer can look branded without hiding the scanner anchors.
Frame templates and CTA text
Add a frame and short CTA text such as Scan to view menu or Visit our profile. CTA frames give users context and should remain outside the quiet zone.
Dynamic vs. static design updates
A dynamic QR code uses a redirect layer so you can update the destination URL without changing the printed code. Learn when to update your design without reprinting and when a static QR code is enough.
Fair tool comparison
Most major QR generators support logo upload. The practical differentiators are file quality, supported logo formats, scan warnings, dynamic redirect support, and whether pricing or plan limits fit your campaign.
カスタムQRコードを読み取りやすく保つ設計仕様
| Design element | Safe range | Risk if exceeded |
|---|---|---|
| Logo center coverage | <= 30% of the QR matrix | Oversized logos can cause scan failures on older or lower-resolution cameras. |
| Color contrast ratio | >= 4.5:1, dark on light | Low contrast creates misreads in dim light and on reflective print surfaces. |
| Module color | Dark modules on a light background | Inverted colors fail because many scanner algorithms expect dark data modules. |
| Minimum print size | 2 cm x 2 cm for 20-30 cm scan distance | Small printed codes reduce per-module detail and become unreadable at distance. |
| Quiet zone | At least 4 modules on every side | Missing border space prevents camera apps from detecting the code boundary. |
Methodology note: the 30% logo coverage guideline is derived from error correction Level H in ISO/IEC 18004, which allows the QR matrix to be reconstructed from redundant data when part of the code is obscured. The 4.5:1 contrast floor is adapted from WCAG 2.1 AA contrast guidance; QR standards do not define a numeric color contrast minimum, so verify final designs with real scan tests.
カスタムQRコードを壊すよくあるミス
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Making the logo too large
Keep the center logo below about 30% coverage and test the code after resizing. A smaller logo with clear whitespace usually scans better than a large mark.
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Using low-contrast brand colors
Use the darker brand color for modules and a light background color behind the matrix. Avoid pale modules on off-white backgrounds.
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Inverting the QR code
Avoid white modules on a dark background unless you test extensively. Many smartphone scanners are optimized for dark-on-light QR codes.
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Removing the quiet zone
Keep a clear blank border around the matrix even on transparent exports. The quiet zone is the scanner's boundary marker.
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Exporting too small for print
Use SVG whenever possible for print. If you need PNG, export at 1000 x 1000 px or higher for small print pieces.
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Using static QR for changeable campaigns
Use a dynamic QR code when the landing page, campaign URL, or brand asset may change after printing.
ブランドQRコードのベストプラクティス
Export and production
- Use SVG for business cards, flyers, menus, packaging, posters, and other print assets.
- Use PNG for websites, email, social media, and screen-only placements.
- Export transparent backgrounds only when the surrounding design still preserves a visible quiet zone.
Testing and tracking
- Test every custom QR code on at least two devices before publishing.
- Use UTM parameters or analytics to track scans on your branded QR code.
- Verify vendor pricing, feature limits, and plan availability on the vendor's website before committing a campaign.
Brand and CTA choices
- Use one logo mark, one primary module color, and one light background color for the cleanest scan path.
- Add short CTA text such as Scan to order, Save contact, or View product details.
- Keep finder patterns visually clear even when using rounded corners or custom eye styles.
Dynamic QR planning
- Use a dynamic QR code when a destination URL, menu, seasonal offer, or campaign page may change.
- Use a static QR code for permanent destinations that will not need edits after printing.
- Compare QR code generators with logo support if your project requires team access, analytics, or advanced exports.
どのカスタムQRコード方式を選ぶべきか
| Need | Recommended approach |
|---|---|
| One-time branded QR for print | Use a static QR code with logo, high-contrast brand color, preserved quiet zone, and SVG download. |
| QR that may need URL updates later | Use a dynamic QR code so the destination can change without reprinting the physical code. |
| QR for digital use only | Use PNG at 500 px or larger, keep the frame minimal, and test on mobile screens. |
| Client deliverable with brand guidelines | Use SVG, exact hex color matching, transparent logo assets, and a CTA frame approved with the artwork. |
| Testing logo placement safety | Use QR-Build's live preview, keep coverage below 30%, and scan with at least two devices before export. |
カスタムQRコード設計ルールの検証方法
Logo coverage
We tested center-logo coverage from 20% to 40% against the Level H error correction rationale in ISO/IEC 18004. Failures began consistently when the logo pushed beyond the practical 30% coverage threshold.
Color contrast
We reviewed dark-on-light QR behavior and applied the WCAG 2.1 AA 4.5:1 contrast floor as a practical scanning minimum. Low-saturation color combinations were the most common cause of custom colored QR code failures.
Print readiness
We compared SVG and PNG exports for business cards, menus, flyers, and packaging. SVG was the most reliable print format because it preserves sharp module edges at any size.
Tool evaluation
In our review, most major QR generators handled basic logo upload. The more important differences were transparent logo support, scan warnings, dynamic update support, export quality, and whether plan limits matched the use case.
カスタムQRコードデザインが必要な人
Restaurant menu QR with logo
Use the restaurant icon as a center logo, a dark brand module color, a light background, and a frame that says Scan to view menu.
Business card QR with brand color
Use a vCard or profile URL QR, a compact logo mark, no heavy frame, and SVG export so the small printed code stays sharp.
Event flyer QR with custom frame
Use a large QR code, strong dark-on-light contrast, a bold CTA frame, and a dynamic QR code if ticketing or event details may change.
Product packaging QR with transparent background
Use transparent PNG or SVG, preserve a visible quiet zone on the package artwork, and keep the destination dynamic for future product pages.
Agency client deliverable
Use exact brand hex colors, approved logo files, SVG export, and a documented scan test before handing off final creative.
用途別に合うデザインパターン
カスタムQRコードデザイン向けQR-Build機能
- Logo upload for PNG and SVG brand assets.
- Custom module and background colors with brand hex values.
- Frame templates with CTA text for print and campaign assets.
- Eye and corner styling for branded QR code design.
- SVG download for print and PNG download for digital use.
- Dynamic QR code support for updating destinations without reprinting.
- Live preview so you can test the QR code before publishing.
- Analytics options to measure scan activity on branded campaigns.
QRコードをカスタマイズする前に知っておきたい用語
QR matrix
The grid of modules that encodes the QR code data. Customization should not make the matrix hard for cameras to read.
Module
A single square or dot in the QR matrix. Custom QR codes often change module color or shape.
Finder pattern
One of the three large corner markers used by scanners to detect QR position and orientation. These are often called the QR eyes.
Quiet zone
The blank border around the QR code, at least 4 modules wide, that helps scanners identify the code boundary.
Error correction level
A QR code property with levels L, M, Q, and H that determines how much obscured or damaged data can be reconstructed.
Error correction Level H
The highest common QR error correction level. It is the basis for the practical guideline that a logo should not cover more than about 30% of the matrix.
Dynamic QR code
A QR code that points through a redirect layer so the destination URL can be changed after printing.
Static QR code
A QR code whose encoded data is fixed at creation. Updating the destination or design requires generating a new code.
SVG
Scalable Vector Graphics, a vector file format that scales without quality loss and is recommended for print.
PNG
A raster image format suitable for digital use and transparent backgrounds. Use high resolution PNG files for print.
CTA frame
A decorative frame around the QR code with text such as Scan to order. It adds context without changing the encoded data.
公開前に次に読むべき内容
カスタムQRコードに関するよくある質問
QRコードにロゴを無料で追加できますか？
QR-BuildのQRコードジェネレーターはロゴアップロードに対応しています。無料枠は変更される場合があり、ロゴアップロード、動的リダイレクト、書き出し解像度などの高度なカスタマイズが制限されることもあるため、現在のプラン制限を確認してください。
ロゴを追加するとQRコードは読み取れなくなりますか？
いいえ。ロゴがQRコード中央部分の30%以下に収まっていれば問題ありません。QRコードには欠損データを復元する誤り訂正があり、QR-Buildはロゴ配置時に高い誤り訂正を適用します。
ロゴにはどの画像形式を使うべきですか？
多くのカスタムQRコードでは、中央にきれいに配置できる透明背景PNGを使います。ロゴがベクターで、どの印刷サイズでもシャープな輪郭が必要な場合はSVGを使います。JPEGは透過に対応せず、圧縮ノイズが出ることがあるため避けてください。
ブランドに合わせてQRコードの色を変更できますか？
はい。モジュールにはカスタムのHEXカラーを使い、背景は明るい色にします。さまざまな端末と照明条件で安定して読み取れるように、4.5:1以上のコントラスト比を保ってください。
QRコードのロゴ最大サイズはどのくらいですか？
QRコードのロゴは、QRマトリクスのおよそ30%を超えないようにします。この実用上の上限は、ISO/IEC 18004の誤り訂正レベルHに基づくもので、その範囲まで隠れたデータを復元できます。
印刷後にQRコードのデザインを更新できますか？
動的QRコードの場合のみ可能です。動的QRコードは、印刷されたコードを変えずにリンク先URLを更新できます。静的QRコードはエンコードされたデータが固定されるため、変更には新しい印刷が必要です。
Do custom QR codes expire?
The QR code pattern itself does not expire. If the QR code points to a URL, the destination can stop working if the page is removed or the domain changes. Dynamic QR codes help prevent broken printed assets by letting you redirect to a new URL.
How do I make a QR code with a transparent background?
Set the QR background to transparent and export as PNG or SVG, because both formats support transparency. Keep a visible quiet zone in the surrounding artwork so scanners can still find the QR boundary.
What is the difference between a custom QR code and a regular QR code?
A regular QR code usually uses black modules on a white background with no branding. A custom QR code adds logo, color, frame, or corner styling while encoding the same destination or content.
What does error correction level mean for QR code design?
Error correction lets a QR scanner reconstruct encoded data even if part of the code is damaged or covered. The QR standard defines levels L, M, Q, and H; Level H provides the highest redundancy and is the basis for center logo placement.
Can I use a gradient in my QR code?
Yes, if every part of the gradient keeps enough contrast against the background. Avoid light gradient endpoints that approach the background color, and test the final code before publishing.
What resolution should I export my QR code at?
For digital use, a 500 x 500 px PNG is usually sufficient. For print, export SVG when possible or use PNG at 1000 x 1000 px minimum. Large posters and banners should use SVG or a much larger PNG.
Can I add text to my QR code?
Yes. QR-Build frame templates can include CTA text such as Scan to order, Visit our menu, or Save contact. The text is decoration around the code and does not change the encoded data.
What is a QR code quiet zone and why does it matter?
A quiet zone is the blank border around a QR code, minimum 4 modules wide, required for scanner detection. Removing the quiet zone is one of the most common causes of scan failure on custom QR codes.
Do custom QR codes scan on all phones?
Custom QR codes scan on major smartphone cameras when they follow coverage, contrast, size, and quiet zone guidelines. As of 2026, modern iOS and Android camera apps support native QR scanning, but final artwork should still be tested before print.
Is a custom QR code better for business than a plain QR code?
A custom QR code has the same functional capability as a plain QR code. The business advantage is visual trust: a logo, brand colors, and CTA frame make the scan point look intentional in menus, packaging, business cards, and campaigns.
Can I use dark background colors for my QR code?
Dark backgrounds require light modules, but many scanner apps are optimized for dark modules on a light background. If you use a dark background, verify the contrast ratio and test thoroughly before printing at scale.
How long does it take to create a custom QR code?
Creating a custom QR code in QR-Build takes under 2 minutes once your destination and logo file are ready. The longest step is usually preparing a clean transparent PNG or SVG logo.
ロゴとブランドカラー付きのカスタムQRコードを作成
QRのリンク先から始め、ロゴをアップロードし、読み取りやすいブランドカラーを選び、メニュー、パッケージ、カード、チラシ、キャンペーンに合うコードを書き出します。
カスタムQRコードを作成