EXIF tag · InteropIFD

RelatedImageWidth

The RelatedImageWidth tag stored in the InteropIFD directory.

0x1001
Tag ID (4097 decimal)
InteropIFD
IFD / group
int16u!
Data type
EXIF
Table

What RelatedImageWidth means#

The RelatedImageWidth tag stored in the InteropIFD directory.

Read, write and remove it#

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

In Python with Pillow:

from PIL import Image
exif = Image.open("photo.jpg").getexif()
value = exif.get_ifd(0xA005).get(0x1001)  # RelatedImageWidth
print(value)

Other InteropIFD tags#

Frequently asked questions#

What is the EXIF tag ID of RelatedImageWidth?

0x1001 (4097 decimal), in the InteropIFD directory.

How do I see RelatedImageWidth in a photo?

Run exiftool -RelatedImageWidth 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