Convert scene to JSON file and download

Questions
1

Hi!
I have a simple scene - one THREE.Object3D and a few OBJ models.
I want to convert data of the scene to JSON file and give to user possibilities to download this file.

Below is the code. This code works to a small objects but not in this case. It means - it works, file is download but i can’t opened it. :smiley: I think - it’s too large and this is a problem.

function saveLikeJSON(){
var dataJSON = {scene: scene.children} 
var dataJson = JSON.stringify(dataJSON); // // I try  JSON.stringify(scene) but it is wrong solution too
downloadTextFile(dataJson,"p")

}

function downloadTextFile(text, name) {
const a = document.createElement('a');
const type = name.split(".").pop();
a.href = URL.createObjectURL( new Blob([text], { type:`text/${type === "txt" ? "plain" : type}` }) );
a.download = name;
a.click();
}

How download only nessesary information about the scene and convert they to json file?

2

What you do you mean with “necessary information”? When calling Scene.toJSON() the entire scene graph is serialized which is important if you want to deserialize it at a later point. It’s not possible to restrict the serialization to a subset of information.

3

“Necessary information” is for my all information to need to the deserialize later.
Ok, i understand that i must use scene.toJSON() - and above code works for it - today file is opening (for a long time but i can open it, i think mistake was my impatience - too early i gave up waiting for opening).

This file is large - circa 240MB. If is any solution to convert a a file to a smaller size (or maybe I do not have to care and leave it as it is? ) to be able to use it later?