免费二维码生成器

即时生成URL、文本、联系方式的自定义二维码。自由定制颜色和大小。

87,432+ QR codes generated and counting

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什么是二维码？

二维码（QR Code）是一种可以用智能手机摄像头扫描的二维条形码。可存储URL、文本、联系方式等各种数据。

广泛用于名片、传单、海报、产品包装、店铺展示等，是线下到线上的桥梁。

What Can You Encode in a QR Code?

URL / Website

Link to any website, landing page, or online resource. The most common QR code use case — perfect for marketing materials, business cards, and product packaging.

Plain Text

Encode any text message up to 4,296 characters. Useful for instructions, serial numbers, or any information you want to share without an internet connection.

WiFi Network

Share WiFi credentials instantly. Guests scan the QR code and connect automatically — no typing long passwords. Perfect for restaurants, hotels, offices, and Airbnb listings.

vCard / Contact

Create a digital business card. When scanned, the contact details (name, phone, email, company) are added directly to the phone's address book. Replace paper business cards.

Email

Pre-compose an email with recipient address, subject line, and body text. When scanned, the user's email app opens with everything pre-filled — great for feedback forms and support.

SMS Message

Pre-compose an SMS message with a phone number and text body. When scanned, the messaging app opens ready to send — ideal for opt-in campaigns and quick communication.

Phone Call

Encode a phone number that triggers an automatic call when scanned. Perfect for customer service lines, emergency contacts, and quick-dial business cards.

二维码建议

1

Use high contrast colors

QR codes need strong contrast between foreground and background to scan reliably. Dark foreground on light background works best. Avoid pastel-on-pastel or neon combinations that confuse scanners.

2

Always test before printing

Scan your QR code with at least 3 different phones (iPhone, Android, older models) before printing on materials. Check that it loads correctly at the intended size and distance.

3

Choose the right error correction

Use Level L (7%) for digital screens where the code stays clean. Use Level H (30%) for printed materials that may get damaged, scratched, or partially covered by a logo overlay.

4

Size matters

The minimum scannable size is about 2x2 cm (0.8x0.8 inches) for close-range scanning. For posters and billboards, increase the size proportionally to the viewing distance — the rule of thumb is 1:10 ratio (size to distance).

5

Add a call-to-action

A QR code alone doesn't tell people what to do. Add text like 'Scan to connect to WiFi', 'Scan for menu', or 'Scan to save contact' near the code to boost scan rates by 30-50%.

6

Track your QR codes

Use URL shorteners with analytics (like bit.ly or your own domain) for URL QR codes. This lets you track scan counts, locations, and devices — invaluable data for marketing campaigns.

二维码生成器：Kleap vs 替代方案

功能KleapQR Code Generator.comQRCode MonkeyCanva
价格完全免费Free (limited) / $6.99/moFreeFree / $12.99/mo
自定义颜色是Premium onlyYesLimited
SVG downloadYes (free)Premium onlyYesPremium only
Privacy (no server)100% client-sideServer-sideServer-sideServer-side
Input typesURL, Text, WiFi, vCard, Email, SMS, PhoneURL, Text, WiFi, vCard, moreURL, Text, WiFi, vCardURL only
No signup requiredYesFree tier: yesYesAccount required

People Also Ask

How do I create a QR code for free?+
Use Kleap's free QR code generator — enter your URL, text, WiFi credentials, or contact information, customize colors and size, and download instantly as PNG or SVG. No signup, no limits, no watermarks. Everything runs in your browser for complete privacy. It's the fastest way to create professional QR codes without any cost.
What is the best free QR code generator?+
Kleap's QR code generator stands out for being completely free with no premium gates, supporting 7 input types (URL, text, WiFi, vCard, email, SMS, phone), offering full color customization, PNG and SVG downloads, and running 100% client-side for privacy. Other popular options include QRCode Monkey (free, server-side) and QR Code Generator.com (freemium with paid features).
Can I create a QR code for WiFi?+
Yes. Enter your WiFi network name (SSID), password, and encryption type (WPA/WPA2, WEP, or open). The generated QR code, when scanned, automatically connects the device to your WiFi network without typing anything. This is widely used in restaurants, hotels, Airbnb properties, offices, and events.
How do I make a QR code for a business card?+
Select the vCard type in the QR code generator and enter your contact details — name, phone number, email, company name, and website. When someone scans this QR code, your contact information is automatically saved to their phone's address book. Print the QR code on your business card or include it in your email signature for easy contact sharing.
Do QR codes work without internet?+
It depends on the content. QR codes encoding plain text, phone numbers, SMS, or WiFi credentials work without internet — the data is stored directly in the code. QR codes linking to URLs require internet access to load the website. vCard QR codes save contact info locally without internet. The QR code itself is always readable offline — it's only the linked content that may need a connection.

Complete Guide to QR Codes

QR codes have become essential tools for bridging the physical and digital worlds. From restaurant menus to contactless payments, event tickets to product packaging, QR codes provide instant access to digital content with a simple scan. Here's everything you need to know about creating and using QR codes effectively.

Choosing the Right QR Code Type

The type of data you encode determines how the QR code behaves when scanned. URL codes open websites — perfect for marketing and product links. WiFi codes auto-connect devices — ideal for hospitality. vCard codes save contacts — great for networking events and business cards. Email and SMS codes pre-compose messages — useful for customer feedback and support. Match the QR code type to your specific use case for the best user experience.

Design Best Practices

Effective QR codes balance aesthetics with scannability. Maintain high contrast (dark on light), leave a quiet zone (white border) around the code, and use a minimum size of 2x2 cm for close-range scanning. Custom colors should keep the foreground darker than the background. If adding a logo, use Level H error correction and keep the logo under 20% of the code area. Always test with multiple devices before printing.

Print vs Digital QR Codes

For print materials (business cards, flyers, packaging), download SVG format for infinite scalability and sharp edges at any size. For digital use (websites, presentations, social media), PNG at 512px is sufficient for most screens. Consider the scanning distance — business cards need smaller codes than billboards. For large-format printing, vector SVG ensures the code stays crisp even at poster size.

QR Code Use Cases by Industry

Restaurants use QR codes for digital menus and WiFi access. Real estate agents link to virtual tours and property listings. Retail stores connect to product reviews, warranty registrations, and loyalty programs. Event organizers use them for tickets and schedules. Healthcare providers share patient intake forms. Educators link to course materials and resources. The versatility of QR codes makes them valuable across virtually every industry.

常见问题

免费吗？+
是的，完全免费无需注册。无限创建自定义二维码。
二维码有有效期吗？+
静态二维码没有有效期。内容直接编码在二维码中。
自定义颜色的二维码能扫描吗？+
可以，只要前景和背景有足够对比度。避免浅色前景深色背景。
什么是纠错级别？+
二维码部分损坏时仍可读取的冗余级别。最高（H）可承受30%损坏。
印刷适合的尺寸？+
最小2cm x 2cm，名片建议3cm x 3cm以上。
What's the difference between PNG and SVG?+
PNG is a raster format — best for digital use (websites, social media, presentations) at a specific resolution. SVG is a vector format — it scales to any size without losing quality, making it ideal for print materials (business cards, posters, packaging). For print, always download SVG. For digital, PNG at 512px or 1024px is usually sufficient.
Do QR codes expire?+
Static QR codes (like the ones generated here) never expire. The data is encoded directly in the QR pattern. As long as the encoded content is valid (e.g., the URL still works), the QR code will work forever. Dynamic QR codes (offered by some paid services) use redirect URLs that can expire or be changed.
Can I put a logo on my QR code?+
Yes, you can overlay a small logo in the center of a QR code if you use high error correction (Level H, 30%). The error correction compensates for the obscured modules. Keep the logo to no more than 15-20% of the total QR code area. After adding a logo, always test the code with multiple devices to ensure it still scans reliably.
Are QR codes safe to scan?+
QR codes themselves are safe — they just encode data. However, malicious QR codes can link to phishing sites or trigger unwanted actions. Most modern phones show the URL before opening it, giving you a chance to verify. When creating QR codes, use HTTPS URLs and trustworthy destinations. When scanning unknown codes, check the URL preview before proceeding.
How do I scan a QR code?+
Most modern smartphones (iPhone and Android) scan QR codes directly through the built-in camera app — just point your camera at the code and tap the notification that appears. If your phone doesn't support this natively, download a free QR code scanner app from your app store. Google Lens also scans QR codes from photos and screenshots.

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免费二维码生成器 | 自定义二维码 | Kleap