What this tool is good for
This page can generate QR codes from plain text or URLs, and it can also decode existing QR code images that you upload locally. You can configure size, margin, error correction level, foreground color, and background color before exporting the result.
Typical use cases
- Turn event links, documents, download pages, or contact info into scannable QR codes.
- Prepare high-resolution QR images for print materials, posters, or presentation slides.
- Extract the original link or text from a QR code screenshot you received.
How to use it
- Enter a URL or plain text and the QR code preview updates immediately.
- Adjust the image size, margin, error correction level, and colors for your scenario.
- Download the final result as PNG, JPEG, or WEBP.
- To decode an existing QR code, click the decode action and select a local image file.
Example
Example content: https://qr9.net/json
Use case: Create a QR code that opens the JSON tool page when scanned
If your URL contains complex parameters, it can help to encode them first with the URL Encode/Decode tool before generating the QR code.
Common mistakes
- Foreground and background colors that are too similar reduce scan reliability.
- Very small images or extremely long content can lower scan success rates.
- Cropped, compressed, or blurry screenshots may fail during decoding.
FAQ
Why does QR decoding fail?
The most common causes are blurry images, incomplete crops, low contrast, or damaged QR code content. Use a clear original image whenever possible and avoid heavily compressed screenshots.
How should I choose the error correction level?
Higher error correction tolerates more dirt or obstruction, but also makes the QR code denser. For ordinary link sharing, the default is usually enough. Use a higher level only for print or partially obstructed scenarios.
Does this page upload my QR content or image?
No. QR generation and image decoding both happen in the browser. The selected file is processed locally and does not rely on a server-side upload step.
Why can some phones not scan the generated code?
The content may be too long, the contrast may be too low, the foreground and background may be too similar, or the image may be too small. High-contrast colors and a sensible size usually help most.
Related tools
If the QR code content contains encoded parameters or payloads, these tools are often useful next:
- URL Encode/Decode：Encode and decode special characters in URLs
- Base64 Encode/Decode：Encode strings to Base64 and decode Base64 back to text