File Size Conversion question

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Posted on by CU01050835-0

https://powerusers.microsoft.com/t5/Building-Power-Apps/How-to-limit-the-size-of-image-in-add-picture-control-to-less/td-p/483934

Text(Len(vImg)*.00000073,"[$-en-US]##.##") & " Mb"

I'm converting a file size to Mb and found the link above.

Can someone tell me why we multiply by .00000073?

Thanks

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WarrenBelz 146,702 Most Valuable Professional on at

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Re: File Size Conversion question

Hi @Brianmaric ,

I am not sure how I can be more specific than It is the relationship between the original size of a binary file and its size when converted to Base64 Text using JSON.

Obviously someone has done some testing and concluded that this is the relationship factor.
WarrenBelz 146,702 Most Valuable Professional on at

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Re: File Size Conversion question

Hi @Brianmaric ,

Just checking if you got the result you were looking for on this thread. Happy to help further if not.

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WarrenBelz 146,702 Most Valuable Professional on at

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Re: File Size Conversion question

Hi @Brianmaric ,

It is the relationship between the original size of a binary file and its size when converted to Base64 Text using JSON.

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

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CU01050835-0 on at

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Re: File Size Conversion question

Yes, I can see that it works. But I was wondering how that number is arrived at.
WarrenBelz 146,702 Most Valuable Professional on at

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Re: File Size Conversion question

Hi @Brianmaric ,

Add an Add picture control to your screen, a Button and a Label

Upload a file of known size and then put this on the Button (note UploadedImage1 may be different if you have another of these controls already in your app.

UpdateContext( { varImage: JSON( UploadedImage1.Image, JSONFormat.IncludeBinaryData ) } )

and this on the label

Len(varImage)

now compare the number in the label with the size of your file

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

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WarrenBelz 146,702 Most Valuable Professional on at

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Re: File Size Conversion question

Hi @Brianmaric ,

When an image is stored in Power Apps from (example) a camera control, it is in a format called dataUri which is actually text and the number of characters has a direct relation to the file size.

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

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