InDesign autosave file?

Yeah, chances are pretty good if you do not wait too long and files still aren't actually overwritten...

Hi @HNS2000 , A timed auto save could be scripted using an idleTask listener—idleTasks events can be triggered at set intervals. This example would save a document roughly every 2 min.

#targetengine "session"

//The save interval in secounds—120 saves every 2 min
var saveTime = 120;

//make a new idleTask. The task name and the sleep time
var iTask = makeIdleTask("autoSave", saveTime*1000)
iTask.addEventListener(IdleEvent.ON_IDLE, autoSave);


/**
* Saves a copy of the active document in the saveTime increment
* @ param the idle event 
* @ return void 
*/

function autoSave(e){
        if (app.documents.length > 0) {
            var d = app.activeDocument;
            if (d.saved) {
                d.save()
                //alert("AutoSave ")
            } else {
                alert("This file has not been saved")
            }
        }
}


/**
* Make a new named idleTask 
* @ param the task name 
* @ param the sleep time 
* @ return the named idleTask
*/
function makeIdleTask(n, s){
    var it;
    try {
        app.idleTasks.add({name:n, sleep:s})
    }catch(e) {
        it = app.idleTasks.item (n);
    } 
    return app.idleTasks.item (n);
}

You could start it manually from your Scripts panel, or it could be saved in the startup scripts folder and it would automatically run every time you start InDesign.

If you want incremental backups the active document, this version would create a backup folder in the same directory as the InDesign file and do a Save A Copy to that folder at the set interval. The file name gets appended with a time stamp:

#targetengine "savecopy"

//The save interval in secounds—120 saves every 2 min
var saveTime = 120;

//make a new idleTask. The task name and the sleep time
var iTask = makeIdleTask("autoSave", saveTime*1000)
iTask.addEventListener(IdleEvent.ON_IDLE, autoSave);


/**
* Saves a copy of the active document in the saveTime increment
* @ param the idle event 
* @ return void 
*/

function autoSave(e){
    if (app.documents.length > 0) {
        var d = app.activeDocument;
        if (d.saved) {
            var f = makeDocFolder(d, "Backup");
            var dn = d.name.replace(/\.[^\.]+$/, '');
            var fn = dn + "_" + timeStamp()
            d.saveACopy(File(f+"/"+fn))
        } else {
            alert("This file has not been saved")
        }
    } 
}


/**
* Make a new named idleTask 
* @ param the task name 
* @ param the sleep time 
* @ return the named idleTask
*/
function makeIdleTask(n, s){
    var it;
    try {
        app.idleTasks.add({name:n, sleep:s})
    }catch(e) {
        it = app.idleTasks.item (n);
    } 
    return app.idleTasks.item (n);
}


/**
* Get a date string. Format is 03-14-23_11-31
* @ return date string 
*/
function timeStamp(){  
    var date = new Date();  
    var m = date.getMonth() + 1;  
    var month = (m < 10) ? '0' + m : m; 
    var yy = date.getYear();  
    var year = (yy < 1000) ? yy + 1900 : yy; 
    var ya = year.toString().substring(2, 4) 
    return month + "-" + date.getDate() + "-" + ya + "_" + date.getHours() + "-" + date.getMinutes();
}  

/**
* Creates a folder inside of the active document’s parent folder 
* @ param the active document 
* @ return the folder’s path 
* 
*/
function makeDocFolder(d, s){
    var dp = d.filePath;
    var n = d.name.replace(/\.[^\.]+$/, '');
    tf = new Folder(dp + "/" + n + " " + s);
    cf = tf.create()
    return tf
}