EXIF tag · IFD0

Predictor

The Predictor tag stored in the IFD0 directory.

0x013d
Tag ID (317 decimal)
IFD0
IFD / group
int16u!
Data type
EXIF
Table

What Predictor means#

The Predictor tag stored in the IFD0 directory.

Defined values#

ValueMeaning
1None
2Horizontal differencing
3Floating point
34892Horizontal difference X2
34893Horizontal difference X4
34894Floating point X2
34895Floating point X4

Read, write and remove it#

# read
exiftool -Predictor photo.jpg
# write
exiftool -Predictor="…" photo.jpg
# remove
exiftool -Predictor= photo.jpg
# all files in a folder, as CSV
exiftool -csv -Predictor -r ./photos > predictor.csv

In Python with Pillow:

from PIL import Image
exif = Image.open("photo.jpg").getexif()
value = exif.get(0x013d)  # Predictor
print(value)

Frequently asked questions#

What is the EXIF tag ID of Predictor?

0x013d (317 decimal), in the IFD0 directory.

How do I see Predictor in a photo?

Run exiftool -Predictor 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