StackQR is a free static QR code generator that understands plain English. Instead of filling out forms or navigating dropdown menus, you simply describe what you need. Type "wifi CaféNet password latte123" and get a WiFi QR code instantly. Type "email support@mycompany.com subject Help Request" and get an email QR code. The tool runs entirely in your browser, which means your data never leaves your device. There's no account to create, no subscription to manage, and no tracking of what you create. StackQR is built for people who want a fast, private way to generate QR codes without the complexity of traditional tools.
Yes, completely free with no hidden catches. There's no premium tier, no paid features locked behind a paywall, and no subscription required. Every feature you see is available to everyone. We don't limit downloads, add watermarks, or restrict file formats. The business model is simple: we show non-intrusive ads on the site (with your consent), and that covers our costs. Your QR codes are yours. Download them, use them commercially, print them on business cards or product packaging. We'll never charge you to keep them working because static QR codes don't need a server to function.
StackQR supports six QR code types that cover the vast majority of use cases. URL codes link to any website or web page. Email codes open a pre-filled email with recipient, subject, and body text. Phone codes initiate a call when scanned, great for support lines or contact cards. WiFi codes share network credentials without revealing the password verbally, supporting WPA, WPA2, WPA3, and open networks. SMS codes open a text message with a pre-filled recipient and message. Plain text codes store up to 1,000 characters of any content. Each type uses standardized encoding that works with every QR scanner app and built-in phone camera.
Your data stays completely private because StackQR processes everything locally in your web browser. When you type a WiFi password, phone number, or email address, that information never leaves your device. Our servers don't receive it, don't store it, and don't have access to it. The QR code generation happens entirely client-side using JavaScript. Your browser encodes the data, renders the image, and handles the download without any server communication. There's no account system tracking your activity and no database storing your codes. Your sensitive information stays on your machine.
Never. Static QR codes encode data directly into the pattern itself, which means they're completely self-contained. When someone scans a static QR code, their device reads the information directly from the image. No internet connection required, no server lookup, no external dependency. Print a static QR code today and it will work the same way in 10, 20, or 50 years. This is fundamentally different from dynamic QR codes, which contain redirect URLs that depend on a service staying online. Static codes have no moving parts and no subscription to maintain. They simply work forever.
Static QR codes encode your actual data directly in the code pattern. When someone scans a static code pointing to example.com, their phone reads that URL directly from the image. The code works offline, works forever, and doesn't depend on any service. Dynamic QR codes work differently. They contain a short tracking URL that redirects to your actual destination. This lets you change where the code points after printing and track how many times it's scanned. But dynamic codes require an ongoing subscription to keep the redirect working. If the service shuts down or you stop paying, the code breaks. For permanent uses like business cards, packaging, or signage, static codes are almost always the better choice.
Static QR codes offer reliability that dynamic codes can't match. They're genuinely free because there's no server to maintain, no subscription to pay, and no company that needs to stay in business for your codes to work. They're ideal for anything permanent: business cards, product packaging, restaurant menus, real estate signs, event materials, museum exhibits. Once printed, a static QR code will work for years without any maintenance. You also get complete privacy since your data doesn't pass through tracking servers. The only limitation is that you can't change the destination after printing, but for most use cases, that's a feature, not a bug.
Yes, StackQR includes inline editing for exactly this situation. If you notice a typo or error after generating a QR code, click the pencil icon next to it. You can edit the URL, fix a phone number, update a WiFi password, or change any other content. The QR code regenerates instantly with your corrections. This saves significant time compared to starting over from scratch, especially when you're creating multiple codes or working with complex data like email templates. Just remember that once you download and print a QR code, the printed version is fixed. The edit feature only applies to codes still in the generator.
StackQR offers five download formats to cover different use cases. PNG is the default choice. It works everywhere and balances quality with file size, making it ideal for websites, social media, and presentations. SVG is essential for print materials because it's a vector format that scales to any size without losing quality. Use SVG for business cards, posters, banners, and packaging. JPEG produces smaller files through compression, useful when storage or bandwidth is limited. WebP offers excellent compression with high quality for modern web projects. GIF provides universal compatibility with older systems. Every format includes embedded metadata showing the QR code type and content description, helping you identify files later.
Yes, StackQR supports batch generation. Enter multiple items (a list of URLs, phone numbers for your team, or WiFi credentials for different locations) and generate all the QR codes in one operation. Then download everything as a ZIP file with descriptive filenames. Each QR code maintains its own metadata, so you can identify which code is which even when managing dozens of files. Batch generation is particularly useful for businesses creating codes for events, product lines, employee contact cards, or multiple physical locations. It transforms what would be a repetitive manual process into a single efficient operation.
StackQR has generous rate limits that exist only to prevent automated abuse. Normal human usage won't come anywhere close to these limits. You can create dozens of QR codes in a single session without any restriction. The limits are designed to stop bots and scrapers, not real users. There's no daily cap, no monthly quota, and no premium tier that unlocks more capacity. If you're using StackQR for legitimate purposes (personal projects, small business needs, or large-scale commercial use) you won't encounter any barriers.
No, the data in a static QR code is permanently encoded in the pattern. Once you print it, that destination is fixed. However, there's a practical workaround: if your QR code links to a web page you control, you can update the page content anytime without changing the code. For example, a QR code pointing to yourdomain.com/menu will always go to that URL, but you can update the menu content as often as you like. This is why many businesses point static QR codes to landing pages they manage rather than third-party URLs. You get the permanence of static codes with the flexibility to update what visitors see.
Absolutely. QR codes generated with StackQR are yours to use however you want, including for commercial purposes. Print them on business cards, product packaging, marketing materials, restaurant menus, real estate signs, or any other business application. There's no attribution required, no licensing fee, and no restriction on commercial use. The QR code formats are open standards, and the codes you generate contain your data, not ours. We'd love to hear how you're using StackQR for your business, but you're under no obligation to tell us. Use the codes freely.
The right size depends on how far away people will scan from. A useful rule of thumb: the QR code should be at least 1/10th of the scanning distance. For handheld scanning on business cards or flyers, 1 inch (2.5 cm) minimum works well. For tabletop materials like restaurant menus, 1.5-2 inches is safer. For signs viewed from several feet away, use at least 4 inches. For posters or displays scanned from across a room, go larger, 6 inches or more. Also consider the environment: low light, glare, or poor camera quality all benefit from larger codes. When in doubt, bigger is better. A QR code that's too large just looks prominent; one that's too small won't scan.
It depends on how they're built. StackQR is safe because everything happens in your browser. Your data never reaches our servers, so there's nothing to leak, sell, or compromise. But many free QR code generators work differently. Some require accounts, storing your codes on their servers. Some inject tracking into the QR codes themselves. Some are dynamic code services that route all scans through their infrastructure. Before using any generator, ask: Does it require an account? Does it store my codes? Does it track scans? Browser-based static QR generators like StackQR avoid these concerns entirely because they don't need server infrastructure to function.
StackQR includes built-in sharing features. After generating a QR code, click the Copy button to copy the image to your clipboard. Then use the share buttons (X/Twitter, LinkedIn, Facebook, or Email) to open a new post or message with pre-written text describing your QR code. Paste the image (Cmd+V on Mac, Ctrl+V on Windows) to attach it. You can also download the QR code first and attach the file directly to any message, document, or presentation. For batch sharing, download your codes as a ZIP file and distribute the individual images however you prefer.