When I looked at one of my projects, I suddenly noticed a “Set Thumbnail” button. I searched it up on Google, but all I saw were tutorials for creating a thumbnail, not about the button.
I thought I'll give it a try, and it looked like this:

The window's name was “Set Thumbnail” and it had two buttons.

There was an option to “Stop thumbnail auto-saving (Recommended)”.

The two buttons were Select File and Use Stage.

The description for the button was this:
“Upload a thumbnail from a file, or click ”Use Stage“ to use the current stage as the thumbnail.”


Can anybody explain me about this feature?

You're probably using an extension. As vanilla scratch doesn't have this

You're probably using an extension of some kind, as this does not appear on Scratch normally.

Edit: Ninja'd

oh sorry that was my add-on

I forgot that I had it on

It's not that hard to do

when green flag clicked
set [ghost v] effect to (100)
go to [front v] :: looks block
show

Dragonmyflesh wrote:

It's not that hard to do

when green flag clicked
set [ghost v] effect to (100)
go to [front v] :: looks block
show

The set thumbnail thing allows animated thumbnails.

medians wrote:

Dragonmyflesh wrote:

It's not that hard to do

when green flag clicked
set [ghost v] effect to (100)
go to [front v] :: looks block
show

The set thumbnail thing allows animated thumbnails.

I don't think Scratch would allow animated thumbnails because they typically NFE projects that do have animated thumbnails.

Scratch Wiki wrote:

Projects using animated thumbnails may also get marked NFE because they may lag the front page; although some users may not notice the lag, this could be very annoying to some users.

Dragonmyflesh wrote:

medians wrote:

Dragonmyflesh wrote:

It's not that hard to do

when green flag clicked
set [ghost v] effect to (100)
go to [front v] :: looks block
show

The set thumbnail thing allows animated thumbnails.

I don't think Scratch would allow animated thumbnails because they typically NFE projects that do have animated thumbnails.

The set thumbnail feature is a forbidden word feature..

Dragonmyflesh wrote:

I don't think Scratch would allow animated thumbnails because they typically NFE projects that do have animated thumbnails.

They do so because they don't want animated thumbnails on the front page (where people with slow/older devices may experience significant lag)

The button that is being talked about is a feature in a browser extension that we can't name due to rules.

Dragonmyflesh wrote:

It's not that hard to do

when green flag clicked
set [ghost v] effect to (100)
go to [front v] :: looks block
show

Tbh an easier way is just doing this

when green flag clicked
hide

you save the project with the image showing and then if you were to click the green flag it would disappear
Although if you want to see the thumbnail when you click the stop sign that is the way to do it, I just personally don’t like adding that lol

PeteyTheParrot wrote:

Dragonmyflesh wrote:

It's not that hard to do

when green flag clicked
set [ghost v] effect to (100)
go to [front v] :: looks block
show

Tbh an easier way is just doing this

when green flag clicked
hide

you save the project with the image showing and then if you were to click the green flag it would disappear
Although if you want to see the thumbnail when you click the stop sign that is the way to do it, I just personally don’t like adding that lol

I think

when green flag clicked
set [ghost v] effect to (100)
forever
set [timer + v] to (timer)
end

when [timer v] > (timer +)
go to front

is a better way to do it, but that's beside the point.
———————————
Anway, to answer the question, that feature is from a browser extension which (if I remember correctly) got hacked once and hacked users. (citation needed)