GS1 Synkka – Secondary images

Secondary images describe, for example, a detail, purpose, texture or feature of the product. For example, with mascara, the secondary image can be an enlargement of the brush part, with clothing, a close-up of the fabric quality, or with make-up, a color sample image.

Secondary images are used if they are important in terms of product selection and purchase. Secondary images clarify a detail or feature of the product that is essential for the consumer, or provide additional information that makes the purchase easier.

It is important to separate secondary images with their own image type so that they can be recognized and placed correctly in online stores. One product can have several secondary images.

The secondary image does not replace the primary product image, but complements and details it. The secondary image cannot be marked as the main image (Primary file), the main image is always the primary product image.

Type

The type defines what kind of image it is. Select Product image.

Image type

Code	Value	Description
F	Detail (Technology) Image	A photograph, line drawing, or other graphic representation of a specific feature or characteristic of a product. It is used to emphasize the detail of an object. The picture can show, for example, the inside parts of the product, a cross-section or a close-up of a part of the product. A detail image can also contain graphics or text explaining the detail.
T	Content/texture image	An image that shows the color or surface structure of the product's content. The picture does not show the product's packaging, and no text or graphics are added to it.

Examples of secondary images

The following images (on the right) are the most typical examples of secondary images.

Color sample image of a cosmetic product

Image of the color and texture of the cosmetic product

Detailed picture of the essential part of the product

Picture of fabric quality

Picture of a product detail

Naming a secondary image

In GS1 Synkka, the secondary image is separated from other images using the material type and image type information. In the Type field, select the value Product image and in the Image type field, for example, Content/texture.

Name the secondary image as follows:

Point in file name	Contents
1–14	GTIN
15	Underscore _
16	Image type

Example: 09520123456788_F.jpg

In addition to the above, you can indicate voluntary additional information separated by an underscore in the file name. Additional information can be one or more. They should be entered in the name of the picture in the following order:

Language code

The primary language that appears in the product image.

In two-letter ISO 639-1 format, for example fi, sv, en.

End date

Report with four numbers: mmyyy

For example, December 2024 is reported as 1224.

Sequence number

Reported as a 2-digit number preceded by the letter s.

For example, s02

Example: 09520123456788_T_fi_1224_s02.jpg

Secondary image material requirements