79 votes

How can I remove all unused materials from a .blend file?

How about the well hidden deathray button? Go to the outliner, choose "Orphan Data" instead of "All Scenes" and hit "Purge All".
Haunt_House's user avatar
41 votes

How do I reload a linked blender file?

Navigate to Outliner Change type to Blender File Right click on the .blend you want to reload Hit Reload Then you can reload the lastly reloaded file by pressing Space and writing down Reload Library
Jan Kadeřábek's user avatar
21 votes
Accepted

How do I get blender to stop creating so many files?

Any file with ".blend" and then a number is a backup file created by blender. This is not related to Save or Save As, which act the same as other program's implementations of them. Every ...
Ray Mairlot's user avatar
  • 29.2k
20 votes
Accepted

What is the difference between 'Save as' and 'Save copy'?

Save As will save the current file as a new file, and you will continue working in that new file. Save A Copy will save an exact copy of the file with the entered name, and you will continue working ...
J Sargent's user avatar
  • 19.2k
13 votes

Version control for .blend files

At the Blender Institute / Blender Animation Studio we use Subversion for our projects. It works fine for blend files, but you have to make sure they are not compressed. Compression can cause the ...
dr. Sybren's user avatar
  • 7,139
13 votes

How to pack images into blend file

You can use the Pack All Into .blend function. Open the project, go to File > External Data > Pack All Into .blend, and wait for the packing of your images/textures (it depends on how many textures ...
Giuseppe G.'s user avatar
12 votes
Accepted

Blender file size grows and never shrinks

If your file has a large size and your scenes are apparently empty it means there are other datablocks saved in your file but not in current use in your scenes, or at least your current scene. Try ...
Duarte Farrajota Ramos's user avatar
12 votes
Accepted

Can I change default folder to save startup file (startup.blend and userpref.blend)?

To save Blender user preferences in Blender's own installation folder, also known as a Portable Install or Standalone Install, start by navigating to the place where you installed or unpacked the ...
Duarte Farrajota Ramos's user avatar
11 votes
Accepted

How to extract render info from a .blend file without launching Blender?

There are 2 ways to do this, both of these scripts are distributed with Blender, but can be used outside of Blender, and involve reading the file using Python. Using ...
ideasman42's user avatar
  • 47.3k
11 votes
Accepted

Python: Check if file was saved

If 'the file' you are referencing is a blender file and you want to know if it has been saved then there are two properties you can check. If a blender file hasn't been saved at all you can check it'...
Ray Mairlot's user avatar
  • 29.2k
11 votes
Accepted

Is there any personal data saved inside a Blender file?

The path to the image will be visible even if packed. However if you used a subdirectory of the path of the .blend e.g. ...
Frederik Steinmetz's user avatar
11 votes

How to find out what is using an image in a blend file

Via a script. An image, like a mesh, world, material ... in blender is an ID object. Given the image is our ID object of interest Run over all the ID objects in the blend and list and report any where ...
batFINGER's user avatar
  • 84.1k
10 votes
Accepted

How to make local single-user copy in Python API

object.data = object.data.copy() makes localized copy of linked data-block.
theres1's user avatar
  • 189
10 votes

How to find the users of a material?

This appears to be the same question as How to find out what is using an image except that it's for materials rather than images. The first answer there, in the form of a python script, will solve ...
Marty Fouts's user avatar
9 votes

Absolute path of files in Blender (with Python)

This may be off topic, but if you encounter the following situation, this may help you. I was automating the creation of blender files which Took an existing file, Replaced some textures, moved ...
mxl's user avatar
  • 191
9 votes
Accepted

Can't append in Blender

You need to make sure you are not in edit mode. I had this problem, but then I switched to object mode and it was fine.
Mason Arnold's user avatar
9 votes
Accepted

How to get my file back in 2.79 after saving with 2.80 series?

Restore your file from a backup. Check whether there is still a .blend1 or .blend2 next to your ...
dr. Sybren's user avatar
  • 7,139
9 votes
Accepted

Is there a way to merge multiple blend files?

I'll assume that your files are placed in the same directory—or a couple of folders deep in the same directory. If so, in the file browser that pops up when you click File > Append, you can switch ...
Kuboå's user avatar
  • 8,750
8 votes
Accepted

How do I reduce my file size?

Have you turned on file compression? Other Alternative would be to zip - trying to zip a already compressed file would make little difference - your file up and try other cloud services like dropbox ...
hawkenfox's user avatar
  • 4,266
8 votes

Can people using different computers edit the same .blend file at once?

Currently this isn't possible and would require major changes to Blender. Typically larger projects divide assets into many files so people can work on different parts simultaneously, this can be ...
Brain's user avatar
  • 310
8 votes
Accepted

Moving all files to a new computer, my concern is links

I think the key thing here is to always use relative paths in your blend files when linking external data. That means for linked libraries, textures and any other data external to the file. Relative ...
Duarte Farrajota Ramos's user avatar
8 votes
Accepted

Append function in menu is greyed. What can I do to fix it?

The problem was that I was in Edit Mode where append can't be used ,so you need to switch to the Object Mode and it's done
bl4nk's user avatar
  • 399
7 votes

How can I remove all unused materials from a .blend file?

This is also a useful button if you want to remove unassigned materials from an object: But, they don't immediately disappear from the file unless you save and re-open Ctrl+Shift+O the file. And, ...
Manu Järvinen's user avatar
7 votes
Accepted

How can I fix broken linked dupligroups when the source file/directory has changed?

This has been fixed in Blender 2.77 To fix broken dupligroup links when the path to the source file (directory name/s) has changed; (//directoryA/source.blend ...
InverseTelecine's user avatar
7 votes
Accepted

Storing a python list as a scene variable

Storing a list as an ID property ...
batFINGER's user avatar
  • 84.1k
7 votes
Accepted

Version control for .blend files

Afaik, .blend files are binary files which contains a database; so version control for binary files is what you're looking for. Tipically this is adressed by Perforce, which seems to be the solution ...
Kabu's user avatar
  • 788
7 votes
Accepted

Is there hidden data in this .blend file? Trying to minimize the file size

Yes. There are three packed jpg files. Go to UV editor, select the first one, then click on the X button near its name, while holding the shift key. Repeat this for the second and the third one, ...
FFeller's user avatar
  • 3,663
7 votes
Accepted

Manipulating .blend file text blocks with blendfile.py (CRUD)

I did it in 2.79. The bad is it seems there is no documentation for this module and we don't know where to go. And of course I don't know if it is the better way to do it. But, once you have the ...
lemon's user avatar
  • 59.1k
7 votes

My point light doesn't appear in cycles render, why?

Check your Outliner, or press AltH to unhide everything, you have a plane that is hidden in Viewport but not in Render, and it makes a big shadow on your scene. Here you can see how the hidden plane ...
moonboots's user avatar
  • 152k
7 votes
Accepted

Modify the Save project function

You can use application handlers, specifically save_post or save_pre handlers. When you're saving the file, the handler kicks in ...
brockmann's user avatar
  • 12.6k

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