Abstract: An image processing apparatus which efficiently converts an image file. The image processing apparatus, based on an instruction, converts a first-format image file including image data and annotation information into a second-format image file having memory capacity of a predetermined area smaller than that of the first-format image file. The image processing apparatus records annotation information into the first-format image file, and generates, based on said annotation information, annotation information for the second-format image file having a size suit for the predetermined area, and before receiving the instruction being received, records the annotation information for the second-format image file into the first-format image file, and records the annotation information for the second-format image file recorded in the first-format image file, into the predetermined area in the second-format image file.

Abstract: An image processing apparatus that is capable of converting an image file such that all annotation information recorded in the image file can be used. When converting a first-format image file including image data and annotation information on the image data to a second-format image file whose memory capacity of a predetermined area where annotation information is recorded is smaller than that of the first-format image file, the image processing apparatus, when the annotation information included in the first-format image file is not predetermined annotation information whose data amount is equal to or greater than a predetermined value, records the annotation information into the predetermined area in the second-format image file, and, when the annotation information included in the first-format image file is the predetermined annotation information, records link information on the annotation information in the predetermined area in the second-format image file.