Do you know the max value of Microsoft OCR’s “scale” option?



Do you know the max value of Microsoft OCR’s “scale” option?

If you are familiar with OCR, please let me know the value about above one.

We could know exactly the minimum value of it at (, but I think that there is no reference about Max.

And I hope to know a calculation formula about images size.
I presume images size is probably multiplied by scale option value.
(How big is a image enlarged by scale option?)

Thank you.


Hello @KazuK,

Based on docs that you read,
I gave 11 number that worked for my requirement. I was giving more than 11 then it’s productivity went down and it was giving garbage value which I was not able to read it.
you also try providing number and test it.

Could you please tell that which doc you’re reading?

Kind Regards,


Hello @Pankaj.Patil,

Thank you for your response to me.
I understand that I should try every pattern of “Scale” option until best number is found.

And, what I read is this part.

Scale - The scaling factor of the selected UI element or image. The higher the number is, the more you enlarge the image. This can provide a better OCR read and it is recommended with small images. If you want to scale down, values between 0 and 1 are also accepted. By default, the value is 1.

Best Regards,


Yes, please try giving numbers until that perfectly work for you :slight_smile:

Kind Regards,