BootSkin Vista

From Just Solve the File Format Problem
Revision as of 13:17, 30 July 2019 by Jsummers (Talk | contribs)

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search
For the predecessor format, see BootSkin XP.
File Format
Name BootSkin Vista
Extension(s) .bootskin
Released 2008  ?[1]

BootSkin Vista, often shortened just to BootSkin, is the name of a program and its accompanying file format that allow for changes to the Windows Vista[2] boot screen. It succeeded the separate BootSkin XP, which is also sometimes called "BootSkin". BootSkin Vista uses a format with the extension ".bootskin".

BootSkin Vista images may have a resolution of up to 1024x768 and 24-bit color[3]. They are apparently generated on a server controlled by the program's authors, after a user uploads an image file[3]. (This is probably an attempt to prevent people from making themes without paying.)

It should be noted that the BootSkin Vista program is also apparently able to accept plain image files, or at least JPEG files, as bootskins.[4]

Some time around mid-2011[5], support was dropped and BootSkin Vista was made free.


A BootSkin Vista file consists of:

  • The Magic number 0x42 0x53 0x56 ("BSV" in ASCII)
  • The byte 0x01 (a version number?)
  • The title of the theme, encoded as a single byte indicating length followed by the string data
  • The name of the creator, encoded the same way
  • 4 bytes holding the length of the subsequent PNG file, little-endian
  • 4 zero bytes (maybe the length is 8 bits?)
  • Possibly another zero byte, probably alignment
  • A PNG holding a thumbnail? of the bootskin, 8-bit color, the horizontal dimension scaled to 400 pixels
  • A large amount of unknown data (taking most of the file)



  1. Earliest skins on the official website at
  2. Indicates that it is not compatible with other Windows releases
  3. 3.0 3.1, page 17
  4. e.g.
Personal tools