200k refers to the photo file size, where k is the abbreviation of kb, 1 megabyte (mb)= 1024 kilobyte (kb).
To understand the size of a computer file, you need to right-click the file icon and select Properties (as shown).
2. It is a simple method to change the picture below 200k without installing other software.
1) Open the drawing software that comes with window: Start -Windows Accessories-Drawing.
2) Open the picture to be resized with software.
3) After opening the file, select the Resize function.
4) After opening, select "Pixel". Generally, 960*600 pixels can be selected for a file with a size of 200k, and then "OK".
5) Save and rename, and it's done.