Best Free Online Developer Tools to Use in 2026
A practical, opinionated list of the best free online developer tools worth using in 2026, organized by category so you can find what you need fast.
Aug 08, 2026
QR Code Generator
- Home
- Web Dev
- QR Code Generator
Choose QR Type
Customize
Foreground
#000000
Background
#ffffff
Gradient
Advanced
Auto
0px
Leave empty to use foreground color
Scan the QR code with your phone camera
Download
What is QR Code?
A QR code (Quick Response code) is a two-dimensional barcode that can be read by a smartphone or QR code scanner. It can store information such as website URLs, contact information, and other data. QR codes can be scanned using the camera on a smartphone and a QR code reader app. They are often used to quickly and easily share information, such as linking to a website or making a payment.
How to Use This QR Code Generator
Follow these steps to create your custom QR code:
- Select QR type — Click the type button for your QR code: URL, Text, Email, SMS, Phone, Wi-Fi, vCard, Event, or Geo.
- Fill in the details — After selecting the type, fill in the required fields marked with *. The QR code updates in real-time as you type.
- Customize colors — Use the color pickers to change foreground and background colors to match your brand.
- Select error correction — Choose an error correction level (L, M, Q, or H). Higher levels allow the QR code to be scanned even when partially damaged or obscured.
- Add a logo — Optionally upload a logo image to embed in the center of the QR code.
- Download — Once satisfied, click one of the download buttons to save your QR code as PNG, JPG, SVG, or WEBP.
Example Use Cases
QR codes are versatile and can be used in many scenarios:
- Restaurant menus — Generate a URL QR code linking to your digital menu. Customers scan it with their phone camera to view the menu without touching a physical copy.
- Wi-Fi sharing — Create a Wi-Fi QR code with your network SSID and password. Guests scan it to connect instantly without typing a long password.
- Digital business cards — Generate a vCard QR code containing your name, phone, email, company, and website. Others scan it to save your contact directly to their phone.
- Event check-in — Use event QR codes on tickets or invitations. Scanning reveals event details and can be used for quick attendee check-in.
- Marketing materials — Add URL QR codes to posters, flyers, brochures, and product packaging to drive traffic to your website or landing page.
Frequently Asked Questions
What is a QR code and how does it work?
A QR code (Quick Response code) is a two-dimensional barcode that stores data in a grid of black and white squares. When scanned by a smartphone camera or QR reader, the pattern is decoded to reveal the embedded information — such as a URL, text, or contact details.
What is error correction in QR codes?
Error correction allows a QR code to be scanned even if it is partially dirty, damaged, or obscured. There are four levels: L (7% recovery), M (15%), Q (25%), and H (30%). Higher levels produce a denser QR code but offer better reliability.
Can I change the color of my QR code?
Yes. This tool lets you choose any color for the QR code using the color pickers. Keep in mind that the scanner needs sufficient contrast between the code and the background — dark colors on a light background work best for reliable scanning.
Can I add a logo to my QR code?
Yes! You can upload any image to appear in the center of your QR code. Note that adding a logo may reduce scannability, so we recommend using a higher error correction level (Q or H) when embedding a logo.
Do QR codes expire?
No. A QR code is a static image that contains the data directly encoded into it. It never expires as long as the information it contains (e.g., a URL) remains valid. If you need to change the destination later, you would need to generate a new QR code.
What image formats are available for download?
You can download your QR code as PNG (with transparent or white background support), JPG (smaller file size), SVG (vector format, scalable without quality loss), or WEBP (modern format with good compression).
Last updated: 17 Aug 2026
Related Tools
Try These Tools Too
Blog
Latest from Our Blog
How to Choose a Hash Algorithm for Data Security
A practical decision guide to choosing the right hash algorithm: MD5, SHA-1, SHA-2, SHA-3, bcrypt, argon2, PBKDF2, and SRI, with comparisons and clear recommendations.
Aug 08, 2026
CSS vs Tailwind CSS: Which One Should You Use?
A thorough, practical comparison of hand-written CSS and Tailwind CSS: learning curve, maintainability, performance, team workflows, and when each approach wins.
Aug 08, 2026
How to Optimize Core Web Vitals for Your Website
Learn practical, step-by-step techniques to improve LCP, INP, and CLS on your website. A developer-focused guide with real measurements and fixes.
Aug 08, 2026
How to Use Base64 Encoding in Real Projects
Learn practical, production-ready ways to use Base64 encoding: data URLs for images, JWT payloads, API tokens, and email attachments, with real code examples.
Aug 08, 2026
AES Encryption Explained: How It Works and Why It Matters
Learn how AES encryption works, the differences between AES-128, AES-192, and AES-256, and how to encrypt and decrypt data online.
Jun 23, 2026