TIFF image file size difference

Hi all, I have created a bitmap, mono, CA. 400px square.

Then save the file.

If I go to "get info" (I'm on an Apple Mac), it indicates that the file size is 97 k.

If I open the file in P'shop (CS5.5) and go to "Image size", it says that the file is 19.2 k.

Anyone know why I get two different file formats?

Thank you, PR

I'm sure that the file TIFF and Photoshop "Image size" are the two 19KO by chance. The "Image size" is the number of bytes consumed by the pixel data uncompressed. A TIFF file must contain a header, so the data in the image file will be compressed, then the file header will bring the total size of the file 19 KB.

Photoshop incorporates metadata TIFF that your client probably didn't need. Preview of your Mac app allows you to reduce the size of TIFF:

In Photoshop, copy the image to the Clipboard.

Preview, do "file > new from Clipboard" followed by Save in TIFF format and compression enabled.

(Do not open the TIFF saved with preview and then re - Photoshop Save as useless information will be maintained. Use the Clipboard).

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