1, as shown in the picture, the size of the picture is 9.48k.
2, open the picture with Photoshop.
3, open the picture with Photoshop, click on the image in the image size specialization.
4, into the image size, you can change the resolution and size to enlarge the picture, but the genus is if a very small picture to put a large is distorted.
5, modified, Ctrl + Shift + S into the save page.
6, after saving, again look at the picture size becomes 1.91MB.
Expanded information:
Picture format
1, BMP
BMP (Bitmap) is the Windows BMP (full name Bitmap) is the standard image file format in Windows operating system, which can be divided into two categories: device vector-dependent bitmap (DDB) and device vector-independent bitmap (DIB), and is very widely used. It uses a bit-mapped storage format and does not use any compression other than the optional image depth, so BMP files take up a lot of space.
2, TIFF
TagImageFileFormat, abbreviated as TIFF. is a flexible bitmap format, mainly used to store images including photographs and artistic drawings. It was originally developed by Aldus Corporation along with Microsoft Corporation for PostScript printing.TIFF is a popular format for high bit color images along with JPEG and PNG.
3, GIF
GIF file data, is a lossless compression format based on the LZW algorithm for continuous color tones. Its compression rate is generally about 50%, it does not belong to any application. GIF format can store more than one color image, if the data stored in a file of more than one image read out and displayed on the screen, it can constitute a simplest animation.