I’ve build me a small script which does the job for me, here you go guys, have fun
/**
* Description
* This script allows to batch download all invoices within the current page(ination) with the real name of the invoice into your download folder.
* If you run this script for the first time, your browser will ask you to allow to download multiple files at once.
* Run through every page and paste this script into the webdeveloper (script) console of your browser.
*
* Usage of this script
* 1. Replace [ENTER YOUR DOMAIN NAME HERE] with your real domain where InvoicePlane is hosted, f. e.: invoiceplane.mydomain.com
* 2. Open invoice plane on the page you want to download all pdf files.
* 3. Paste the script below into the javascript webdeveloper console.
* 4. Let the magic happen.
*
* If you experience that not all invoices per page (regular 15 invoices per page) are downloaded, you need to increase the timeout (1000 / 1s) to 2000 / 2s or something like that.
*/
(() => {
document.querySelectorAll('a[href^="https://[ENTER YOUR DOMAIN NAME HERE]/invoices/generate_pdf/"]').forEach((invoice, index) => {
setTimeout(() => {
invoice.setAttribute('download', true);
invoice.click();
}, index * 1000);
});
})();