A graphical indicator is provided. The graphical indicator includes a plurality of header blocks and a plurality content blocks. The header blocks include N first header blocks and (M−1) second header blocks. Each of the content blocks has a data micro-graphic. The N first header blocks are disposed at a first row of an indicator matrix. Each of the (M−1) second header blocks is disposed at (M−1) rows other than the first row of the indicator matrix. Each of the N first header blocks has a header micro-graphic. Furthermore, one or more target second header blocks in the (M−1) second header blocks do not have the header micro-graphic, and each of a plurality of remaining second header blocks other than the one or more target second header blocks in the (M−1) second header blocks has the header micro-graphic.