General Technical Help

How do I report a bug in Scratch?
If you encounter a bug or glitch in Scratch or the Scratch website, we recommend going to the Bugs & Glitches forum. This is where you can report any bu...
Thu, 25 Jun, 2020 at 2:27 PM
Why did I get signed out when trying to read a comment?
This happens when you open a comment that Scratch can't find in our database.  This usually is because it has been deleted, but can sometimes occur for...
Wed, 6 May, 2020 at 10:01 AM
Why can't I save changes to my project from Scratch 2.0?
This is most likely happening because your project.json file for your project is larger than our file size limit of 5MB.  The project.json is the file that ...
Wed, 6 May, 2020 at 10:01 AM
Why did I get signed out?
There are a few common reasons people get logged out when they don't expect it. 1. If you sign in on more than one computer you can sometimes becom...
Wed, 6 May, 2020 at 10:01 AM
How do I make sure Scratch Link can communicate with Scratch?
Scratch Link runs a small server on your computer that Scratch in your web browser can communicate with using web sockets.  Scratch in your browser can find...
Wed, 6 May, 2020 at 10:01 AM
Why can't I open my Scratch project in Scratch Desktop?
Sorry you're having trouble opening project files in Scratch Desktop.  There is a known issue where double clicking on a Scratch Project from your oper...
Wed, 6 May, 2020 at 10:01 AM
Why doesn't Scratch see my bluetooth device on Windows even when I have Scratch Link running?
Sometimes there is a conflict between Scratch and the way Windows automatically connects to a bluetooth device that your computer has connected to before.  ...
Wed, 6 May, 2020 at 10:01 AM
Why does Scratch appear to be associated with a different site, which our content filter has blocked?
Like many other large websites, we use a Content Delivery Network (CDN) to distribute Scratch around the world. While CDNs make Scratch faster and easier to...
Wed, 6 May, 2020 at 10:01 AM
What domains do I need to allow to access Scratch?
In order for Scratch to be accessible, the following servers need to be allow listed (i.e., not blocked) by your network:   If you can use wildcard domain...
Mon, 15 Jun, 2020 at 4:14 PM
How do I reduce or check my project's size?
Here's a breakdown of the various size limitations for what can be uploaded/saved on the Scratch website:   There is no limit to the total project s...
Fri, 21 Aug, 2020 at 3:31 PM