The size of a QR code for a high volume of characters can vary depending on factors such as the version of the QR code, error correction level, and module size. However, as a rough estimate:
The size typically ranges from around 30mm x 30mm (1.2 inch x 1.2 inch) for a basic version with minimal data to several inches or more for a higher version accommodating a high volume of characters.
If you're specifying the size in terms of pixels for digital representations, a typical minimum size for scanning reliability might be around 300x300 pixels for a basic version and could go up to several thousand pixels for a higher version with a high volume of characters.
Remember, these are general estimates, and the actual size required can vary based on the specific content, error correction level, and scanning conditions.
Additionally, it's important to note that increasing the size of the QR code, along with ensuring it's generated without a logo, can further enhance its readability and usability, especially when dealing with a high volume of characters.
In case if you still have any questions or concerns please reach out to us at support@scanova.io.