QR Code Expert 0 / 5596
QR Code Style [Classic]
QR Code Properties [Numeric, 25×25, ECL selected: M, boosted: Q]
Data Capacity [5596 characters]
The data capacity of a QR code depends on the entered text charset and the error correction level.
The table below shows the maximum number of characters that can be stored for each encoding mode and error correction level.
The table below shows the maximum number of characters that can be stored for each encoding mode and error correction level.
| Mode | L | M | Q | H |
|---|---|---|---|---|
| Numeric | 7089 | 5596 | 3993 | 3057 |
| Alphanumeric | 4296 | 3391 | 2420 | 1852 |
| Byte | 2953 | 2331 | 1663 | 1273 |
Encoding Mode [Numeric]
Encoding modes are used to store data more efficiently. The list of supported modes is provided in the table below:
| Mode | Character set | Compression |
|---|---|---|
| Numeric | 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 | 3 digits per 10 bits |
| Alphanumeric | 0-9, A-Z (uppercase letters only), space, $, %, *, +, -, ., /, : | 2 chars per 11 bits |
| Byte | Characters from the UTF-8 charset | Each char occupies 8 bits or more |
The optimal encoding mode is selected automatically based on the data entered.
Module Count [25×25]
QR code versions range from 1 to 40. Each version has a different number of modules (black and white dots), which define the image dimensions. For version 1, the size is 21×21; for version 2, it’s 25×25; and so on. The higher the version, the more data can be stored, and the larger the QR code image becomes.
The lowest possible QR code version is selected automatically based on the data entered.
The lowest possible QR code version is selected automatically based on the data entered.
Error Correction Level (ECL) [selected: M, boosted: Q]
The error correction feature allows QR codes to be scanned successfully, even if they are dirty or damaged. Higher levels provide better error tolerance but reduce data capacity.
If the probability of QR code damage is low (for example, if it is displayed on a monitor), the Low or Medium levels are safe to use.
The possible levels are shown below:
If the probability of QR code damage is low (for example, if it is displayed on a monitor), the Low or Medium levels are safe to use.
The possible levels are shown below:
| Level | Error resistance |
|---|---|
| L (Low) | ~7% |
| M (Medium) default | ~15% |
| Q (Quartile) | ~25% |
| H (High) | ~30% |
The percentage indicates the maximum obscure area beyond which the QR code becomes unscannable.
The error correction level is automatically boosted while preserving the same module count (the QR code version).
The error correction level is automatically boosted while preserving the same module count (the QR code version).
Image Size [300 px × 300 px]
You can specify the total image width in pixels or the module (dot) size. The image width will then be calculated based on the number of modules and the margin.
The height of the image is proportional to the width, maintaining the aspect ratio.
The module size cannot be smaller than 3 px × 3 px. To meet this requirement, the output image size is limited to a minimum value.
The height of the image is proportional to the width, maintaining the aspect ratio.
The module size cannot be smaller than 3 px × 3 px. To meet this requirement, the output image size is limited to a minimum value.
Margin [1 module, actual: 11 px]
A QR code margin—also called a quiet zone—is the blank space required around a QR code for it to be scanned correctly. Standard QR codes have a minimum margin of 4 modules (dots) on all sides.
You may still choose to set the margin to 0 if you plan to add it later.
You may still choose to set the margin to 0 if you plan to add it later.
Dot Pattern & Color
#000000
Marker Shape & Color
Other Dot Settings [dot size: ×1, white dots: ✗]
Background
#ffffff
Logo [✗]
px
Shape [Square]
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