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Document Capture Recommendations

These are the expected details about the quality and size of the images required to successfully capture an identity document:

Correct lighting

Good lighting helps achieve better optical character recognition (OCR) results. If the image is too light or too dark, the document may not be processed correctly.

Avoid glares

Highlights and reflections reduce the accuracy of data extraction during processing. We recommend not to use the flash of the mobile device to capture the document / s.

Focus and sharpness

Make sure the image is clear and there are no blurry areas.


The document tilt angle should not exceed 10 degrees in any direction (horizontal or vertical) so that distortion correction does not significantly harm the image quality.


Insufficient margin

Make sure there is a minimum space around the document and that it is completely inside the image, without touching the edges. It is recommended that the document occupy 70-80% of the image area (this is important, since even if the image is heavy,> 8MP, but after detection and cropping the document size is less than 640x480pixels, verification may not process correctly).

Too much margin

Make sure that the space around the document does not occupy more than 20-30% of the image. It is recommended that the document occupy 70-80% of the image.

Background with contrast

The document should be in clear contrast to the background. If the document is the same color as the background, the edges may not be detected. It is recommended to avoid light backgrounds if the document is light in color and dark backgrounds if the document is dark (that is, not white on white or black on black).

Image resolution

To ensure the quality of document recognition, it is recommended that the captured image be taken by a device with a resolution of at least Full HD (1920 × 1080) and autofocus. JPEG compression must not be less than 70% of the original.

Fully visible

Make sure that your hands or other objects do not partially or completely cover the document data.