EXIF tag · ExifIFD

CompressedBitsPerPixel

The CompressedBitsPerPixel tag stored in the ExifIFD directory.

0x9102
Tag ID (37122 decimal)
ExifIFD
IFD / group
rational64u!
Data type
EXIF
Table

What CompressedBitsPerPixel means#

The CompressedBitsPerPixel tag stored in the ExifIFD directory.

Read, write and remove it#

# read
exiftool -CompressedBitsPerPixel photo.jpg
# write
exiftool -CompressedBitsPerPixel="…" photo.jpg
# remove
exiftool -CompressedBitsPerPixel= photo.jpg
# all files in a folder, as CSV
exiftool -csv -CompressedBitsPerPixel -r ./photos > compressed-bits-per-pixel.csv

In Python with Pillow:

from PIL import Image
exif = Image.open("photo.jpg").getexif()
value = exif.get_ifd(0x8769).get(0x9102)  # CompressedBitsPerPixel
print(value)

Frequently asked questions#

What is the EXIF tag ID of CompressedBitsPerPixel?

0x9102 (37122 decimal), in the ExifIFD directory.

How do I see CompressedBitsPerPixel in a photo?

Run exiftool -CompressedBitsPerPixel photo.jpg, or open the file's info panel in Lightroom, Photoshop, Windows (Properties → Details) or macOS Preview (Tools → Show Inspector).

Last updated October 03, 2026 · How we calculate · Sources