Removes all Amazon saved for later items on the cart page. It will only remove visible items. You might want to scroll first to make more items visible. To use paste code in developer console (Ctrl+Shift+J or Cmd+Opt+J in Chrome) then press enter.

deleteAmazonSavedItems.js

function deleteSavedItems() {
	var query = document.querySelectorAll("#sc-saved-cart input[value=Delete]")
	if (query.length) {
		query[0].click();
	}
	if (query.length > 1) {
		setTimeout(deleteSavedItems,100);
	}
	else {
		console.log('Finished');
	}
}
deleteSavedItems();

Addition to above solution

Working Chrome 08-2024

Just zoom out Chrome window to 25% (or minimum)

Paste this in the dev console

function deleteSavedItems() {
    var elements = document.querySelectorAll("input[name^='submit.delete.']");

    if (elements.length > 0) {
        elements.forEach(function(element) {
            element.click();
        });
        setTimeout(deleteSavedItems, 100);
    } else {
        console.log('Finished');
    }
}

var intervalId = window.setInterval(function(){
  deleteSavedItems();
}, 5000);

Later you can close the tab or you can paste the following code to stop the loop

clearInterval(intervalId)

I got a little frustrated last night with some of the query limit errors and having to restart the script (my soon to be ex-wife had over 750 items saved), so I rewrote the script, though I think the setInterval in the above script would have handled it just fine.

https://github.com/mittingphx/WebsiteAutomation

Looks like others also added similar checks to restart the script automatically when you get the quota limit errors. Here's a link to the version that I wrote last night which worked well the first time without any further intervention (super fun to watch the count go down in real time). Fingers cross it continues to work, works great in Oct 2024. https://github.com/mittingphx/WebsiteAutomation

None of the above worked for me unfortunately, but after some iteration, I was able to get it to work for me:

async function deleteAllSavedItems() {
  while (true) {
    const deleteButtons = document.querySelectorAll('input[data-action="delete-saved"]');
    if (deleteButtons.length === 0) {
      console.log("No more saved items to delete.");
      break;
    }

    deleteButtons[0].click();
    console.log("Deleted one saved item, remaining:", deleteButtons.length - 1);

    await new Promise(resolve => setTimeout(resolve, 2000));
  }
}

deleteAllSavedItems();

Maybe Amazon updated their HTML, so the other approaches didn't work.