What is the actual size of A4 sheet?

This is defined by ISO 2 16 of the International Organization for Standardization, and the paper size used in most countries in the world adopts this international standard.

When designing, the bleeding position will be increased by 3cm around, so the design specification is generally 216x291mm.

Extended data

A4 size

A0 is defined as paper with an area of one square meter and an aspect ratio of √ 2: 1.

The following paper sizes, such as A 1, A2, A3, etc. , are defined as the paper with one digit missing is folded in half along the long side and then discarded to the nearest millimeter value.

Bleeding position

Bleeding position is a common printing term, which refers to the part reserved for convenient cutting in order to keep the effective content of the picture in the printing process.

Bleeding in printing refers to increasing the pattern of the external size of the product and adding some pattern extensions at the cutting position, which are specially used in each production process within its process tolerance to avoid cutting the white edge or cutting content of the finished product.

reference data

A4 paper _ Baidu Encyclopedia

Bleeding _ Baidu Encyclopedia