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docs/Appendix/Performance-considerations.md
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@@ -44,35 +44,37 @@ is a complex and costly operation that is necessary to ensure the symbol is read
to override the evaluation and manually set a mask pattern, this is not recommended unless you know exactly what you're doing
as it can render a QR symbol unreadable.
The table below shows the performance impact (in miliseconds) of the mask pattern evaluation for each version, the times may vary between systems.
The table below shows the performance impact (in miliseconds) of the mask pattern evaluation for select versions, the times may vary between systems.
| version | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|-----------|--------:|--------:|--------:|--------:|--------:|--------:|--------:|--------:|--------:|--------:|
| **1-10** | 4.414 | 5.697 | 7.986 | 9.221 | 10.877 | 11.293 | 13.901 | 15.563 | 18.142 | 20.501 |
| **11-20** | 22.662 | 27.779 | 29.622 | 33.017 | 36.358 | 39.712 | 43.685 | 47.121 | 51.389 | 57.865 |
| **21-30** | 59.753 | 68.502 | 68.523 | 72.866 | 78.245 | 83.593 | 88.327 | 94.921 | 103.394 | 106.358 |
| **31-40** | 113.311 | 120.484 | 126.215 | 132.931 | 139.783 | 145.617 | 170.576 | 165.996 | 167.365 | 175.821 |
| version | time (ms) |
|---------|----------:|
| **1** | 2.285 |
| **5** | 5.867 |
| **10** | 12.737 |
| **20** | 34.045 |
| **30** | 64.914 |
| **40** | 107.027 |
## Output
Output rendering depends heavily on the size of the QR matrix, the desired type and the underlying libraries and/or PHP extensions.
Especially the rendering of raster images through GD or ImagMagick can be very slow, depending on [the scale setting](../Usage/Configuration-settings.md#scale),
Especially the rendering of raster images through GD or ImageMagick can be very slow, depending on [the scale setting](../Usage/Configuration-settings.md#scale),
filters and image type.
Below a comparison of the performance for the several built-in output classes (times in miliseconds, scale = 5):
| | v5 | v10 | v15 | v20 | v25 | v30 | v35 | v40 |
|-------------------|-------:|-------:|--------:|--------:|--------:|--------:|--------:|--------:|
| **QRMarkupSVG** | 3.732 | 8.645 | 13.846 | 21.127 | 32.842 | 43.753 | 56.584 | 73.885 |
| **QRMarkupHTML** | 0.522 | 1.308 | 2.062 | 2.761 | 3.907 | 5.201 | 7.931 | 9.572 |
| **QRGdImageBMP** | 5.998 | 12.541 | 20.728 | 32.336 | 46.345 | 62.842 | 81.555 | 106.482 |
| **QRGdImageGIF** | 3.427 | 6.817 | 12.226 | 17.925 | 25.453 | 35.136 | 44.706 | 57.477 |
| **QRGdImageJPEG** | 2.284 | 4.882 | 8.161 | 12.097 | 17.333 | 23.862 | 30.327 | 40.226 |
| **QRGdImagePNG** | 4.523 | 9.377 | 16.581 | 26.207 | 36.516 | 49.066 | 63.765 | 82.074 |
| **QRGdImageWEBP** | 8.211 | 17.367 | 30.079 | 47.095 | 69.668 | 91.378 | 119.869 | 150.288 |
| **QRStringJSON** | 0.043 | 0.066 | 0.107 | 0.158 | 0.215 | 0.301 | 0.369 | 0.492 |
| **QRStringText** | 0.229 | 0.387 | 0.628 | 0.952 | 1.312 | 1.759 | 2.329 | 3.045 |
| **QRImagick** | 37.694 | 68.808 | 114.415 | 172.962 | 242.338 | 325.085 | 419.999 | 529.897 |
| **QRFpdf** | 6.578 | 12.466 | 21.169 | 33.021 | 45.469 | 61.198 | 80.092 | 100.059 |
| **QREps** | 1.269 | 2.694 | 4.515 | 6.933 | 11.049 | 14.181 | 20.799 | 25.886 |
| | v5 | v10 | v20 | v30 | v40 |
|-------------------|-------:|-------:|--------:|--------:|--------:|
| **QRMarkupSVG** | 3.732 | 8.645 | 21.127 | 43.753 | 73.885 |
| **QRMarkupHTML** | 0.522 | 1.308 | 2.761 | 5.201 | 9.572 |
| **QRGdImageBMP** | 5.998 | 12.541 | 32.336 | 62.842 | 106.482 |
| **QRGdImageGIF** | 3.427 | 6.817 | 17.925 | 35.136 | 57.477 |
| **QRGdImageJPEG** | 2.284 | 4.882 | 12.097 | 23.862 | 40.226 |
| **QRGdImagePNG** | 4.523 | 9.377 | 26.207 | 49.066 | 82.074 |
| **QRGdImageWEBP** | 8.211 | 17.367 | 47.095 | 91.378 | 150.288 |
| **QRStringJSON** | 0.043 | 0.066 | 0.158 | 0.301 | 0.492 |
| **QRStringText** | 0.229 | 0.387 | 0.952 | 1.759 | 3.045 |
| **QRImagick** | 37.694 | 68.808 | 172.962 | 325.085 | 529.897 |
| **QRFpdf** | 6.578 | 12.466 | 33.021 | 61.198 | 100.059 |
| **QREps** | 1.269 | 2.694 | 6.933 | 14.181 | 25.886 |
docs/Appendix/Terminology.md
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## QR Code
A [*QR code*](https://en.wikipedia.org/wiki/QR_code) (quick-response code) is a type of two-dimensional matrix barcode, invented
A [*QR code*](https://en.wikipedia.org/wiki/QR_code) (quick-response code), sometimes referred to as *QR symbol* or simply just *symbol*, is a type of two-dimensional matrix barcode, invented
in 1994 by Japanese company [Denso Wave](https://www.qrcode.com/en/faq.html#patentH2Title) for labelling automobile parts.
The QR labelling system was applied beyond the automobile industry due to its fast readability and greater storage capacity
compared to standard UPC barcodes.