BLEND1 file format description

Many people share .blend1 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .blend1 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .blend1 files.

1 filename extension(s) found in our database.

.blend1 - Blender Document Backup

The BLEND1 data files are related to Blender. The BLEND1 file is a Blender Document Backup. Blender is a free (GPL lincensed), popular Open Source 3D graphics application. Blender uses the BLEND file format to save nearly everything: Objects, Scenes, Textures, and even all your user interface window settings.

Data files
- / -
Blender Document Backup related extensions:
Blender Data
Blender Fluid Simulation Object
Blender Cache
Biovision Motion Data
Blender Fluid Simulation Velocity Data
Biovision Hierarchy Data

Naturally, other applications may also use the .blend1 file extension. Even harmful programs can create .blend1 files. Be especially cautious with .blend1 files coming from an unknown source!

Can't open a .blend1 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

The .blend1 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:


Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Blender Data

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.

If you have useful information about the .blend1 file format, then write to us! >> BLEND1 file