SketchUp STL
Import and Export STL files for 3D printing
SketchUp STL

The STL file format is widely used across different 3D printing and modeling interfaces. For instance, many of the models you might find on are available in STL format, and several popular 3D printers accept STL files to prepare models for fabrication. This extension provides import/export functionality for STL files to and from SketchUp, so you can easily export SketchUp groups to STL, or import an STL design and manipulate it within SketchUp.

Once you install the extension, you’ll find two new options under the File menu:

Export STL: This function requires you to select one or more groups for export (so you’ll need to group your geometry before using this).

Import... (STL): With this plugin, you’ll find STL as a supported format within SketchUp’s Import command. STL files will be imported to SketchUp as a group.

For questions or help with this extension, head on over to the SketchUp help forum.

Note: This extension was originally developed as separate plugins by Jim Foltz, Nathan Bromham, and Konrad Shroeder. Now, it’s in continual development as an open-source project on GitHub that’s hosted by the SketchUp team. Stay tuned for updates!


I did. Windows 10 has a built in program named 3D Builder. You can open all the STL files in that, then export as a single STL for import to Sketchup.

One catch is 3D Builder crashes if you try to import too many files all at once (> 100 or so). So if you have a lot of parts, you may need to import in batches. Still way better than 1 at a time.

Gavin P's picture

Thanks Ben

I'm getting the colorful ball, when importing a100mb STL file.
Tried different ones but still want load.
Says "not responding" and had to Force quit

Can anyone suggest a solution?

I am having the same problem. Is there any solution that works? My file size is 7 MB


How long have you waited?

15 Min and after a while checked the "Force quit" and it said Sketchup not responding


For support, please post here, or read one of these threads:  This area is for comments, not support.

Siggi B.'s picture

It seems to be exporting in the wrong units, mm instead of inches. 2" becomes 2mm, not sure what I'm doing wrong.

I got it to download without a problem, but when I go to upload stuff, I get a notice in the bottom left hand corner that the STL upload is complete, but nothing ever pops up?

Jesse P.'s picture

Tried to import this but it just hangs on Mac. Simpler things seem to import OK. Is this thing too big for this import tool or for Sketchup itself, any idea?


You are really creepy with the "Google authentication" thingie to access the file.


OK, as of today, you can do it with a Trimble ID as well.  Check out the new login.


Ditmar T.'s picture

Nothing works ...

Excellent, now it work perfectly. Thanks for fixing this.


OK, please retry, things should be working.  In the future, please report these to for faster responses, as this space is really for reviews of the extension.

Just thought to post that it does install. I was having the same issues as others, but finally realized that I may have to run it in admin mode.

Main issue... You have to run SketchUp as Administrator. Once you run it as administrator it allows the program to install stuff.

I tried to do exactly that, but the forum signup was also broken at the time.



We're aware and testing a solution to this intermittent problem.  In the mean time, you can either upload your model to 3DWarehouse and make it 3D printable (produces an STL file), or if you're a bit more technically saavy, you can go to and grab it:

I'd give it a review if I could download it. If the company isn't going to bother to keep its systems working, what's the point? I'm going to look elsewhere for some alternative software.


I keep trying to download the skp to stl on sketchup extentions but it never works. please help. all the other solutions have failed.

I'm getting the same HTTP 500 error everyone else is.

C'mon folks, this really needs to be fixed, there is no other way to get the .rbz file.


See post above.  We're working on it.

Google. Fantsatic ideas but no follow through. Does not download and when you download and manually install I get a message saying invalid strings. Very frustrating. I'm a huge fan of the ideas that flow from Google but it seems that the fun stops there.

Josh H's picture

Josh H's picture

Josh H's picture

When I try installing I get this message:

An AJAX HTTP error occurred.
HTTP Result Code: 500
Debugging information follows.
Path: /en/system/ajax
StatusText: Internal Server Error
500 Internal Server Error
500 Internal Server Error

What's going on???

It says I'm not authorized to access that page... I really need this extension. What to do????

Getting error "not authorized to view this page" with your link. Main link still giving ajax 500 error.

link dosent work

All plug-ins. This lil beauty pops up on hitting Install/Download...
'An AJAX HTTP erro occured. HTTP Result Code:500....
...500 Internal Server Error.. nginx'

How does one stay ahead of competition... when vibrant new customers starting to use your software cannot access plug-ins... It was one of the "selling points" for SU... time for greener pastures...

I have a problem to download this extension. AJAX error HTTP code 500, internal server error.

Eli M.'s picture

For anyone having the 500 problem... if you've dowloaded and installed this extension before using you're google profile, you can still find it in you account under "my extensions".

I was able to install and use it from there, even though this is a clean install on my PC and never actually downloaded the extension here..

Hope that helps. :)

Could you provide the raw .rbz link from the 'my extensions' page? I am getting the 500 ajax error and I don't have it on the 'my extensions' page.

Eli M.'s picture

Provide it how, exactly?

In chrome if I right click and select "Copy Link Address" on a extension I already have in "My Extensions" such as "Advanced Camera Tools" it will link to:

I was looking for something similar for SketchUp STL to get around the 500 ajax error.

Thanks, Eli! That worked :)

Eli M.'s picture

Great.. I'll post it for the rest.. :)

An AJAX HTTP error occurred
HTTP Result Code: 500

Internal Server Error

Cannot download

Nick T's picture

finding this problem with all of the extensions I have tried tonight...

Same Here.

Joseph B's picture


I need help I get to step 3 and when i click install I get

Authentication Error !
Something went wrong during the authentication process. Please try signing in again.

I get same error if I click login. ?


Step 3:  Mac or PC, and in SketchUp 2016?  Can you sign in from a browser and download from  To install the downloaded extension, SketchUp Preferences->Extensions->Install Extension.

Edit thanks that worked.
Also before i saw your post I managed to get to the login screen but ran into another issue It wanted me to type my G mail but I don't have one I log into google plus with a password :/ .

Norman F.'s picture

Due to major problem with computer, software etc. I have had to reinstall OS & all programs many, many times over the last few months.

EVERY time I have reinstalled Sketch up, both 2015 & 2016 and the STL extension it has work, been simple & very quick. Never had a problem installing the extension, it just works.

I have both 2015 & 2016 versions on Windows 10 & it was no difference with Windows 7.

I really can't understand why so many people have trouble.

Even the scaling problem when exporting & importing your own files was quite easy to solve.

I have posted the method previously as have others.

Not tried printing as yet so will see what happens when the time comes.

A good, easy & FREE program.

464235 users
160.68 KB
SketchUp STL (2.1.7); January 25, 2017
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Extensions: 24
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