Vane Data / Reference

image_file_metadata

image_file_metadata inspects bounded IMAGEFILE headers without decoding pixels.

Signature

example.py

vane.image_file_metadata(value, *, max_bytes=1048576, max_pixels=100000000) -> Expression

SQL: image_file_metadata(file [, max_bytes [, max_pixels]]). Expression method: expr.image_file_metadata(...).

Name	Type	Description	Default
value	IMAGEFILE value or Expression	Encoded image object to inspect	Required
max_bytes	Integer or Expression	Bounded header/probe budget	1 MiB (maximum 64 MiB)
max_pixels	Integer or Expression	Declared-dimension limit	100,000,000

Returns STRUCT(width UINTEGER, height UINTEGER, format VARCHAR, mode VARCHAR). NULL inputs return NULL; unreadable or unsupported headers raise.

example.py

import vane


con = vane.connect()
con.sql("SELECT image_file_metadata(image_file('photo.png'))").show()