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Changing image colour depth


I’m trying to convert PDF to tiff, which is working a charm. However the OCR engine I’m trying to feed into is picky regarding the colour depth of the file. It says it wants “8 bits/sample, 4 samples/pixel, RGB, single plane”. Which sounds like plain black and white to me!

Are there options I can play with around bits per pixel etc, before I output my TIFF file?

Many thanks!

Hi Mark,

I’m sorry to inform you that this feature is currently not supported. However, I have logged a new feature request as PDFKITNET-16362 in our issue tracking system. Our team will look into this requirement and you’ll be updated via this forum thread once it is supported.

We’re sorry for the inconvenience.

Many thanks Shahzad. I wouldn’t have expected the feature to be honest, but Aspose seems to do everything else in the world so I thought I’d ask! :slight_smile:


The issues you have found earlier (filed as 16362) have been fixed in this update.

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Great! Exceeding expectations once again!

Much appreciated.