Hi There. recently I found by accident a Free Photoshop - browserbased. That means you need nothing to download only open this link in your browser https://www.photopea.com and then a photoshop like website opens. There is some advertising on the right side. But it's not really disturbing.
Thanks for the link - just tried opening a template in it and it doesn't seem to open a TIFF file in layers - just as a flat background layer like a jpeg so you can't clip anything (it's basically just a sketch). The PSD version of the same template opened fine in a ton of layers & i could drag a paper in and the clipping mask short cut of (ctrl alt G) was even the same but if you are a scrapper that saves everything or downloads only the TIFF versions of templates from the store, it might be a limitation of this photopea, which otherwise at first glance looks similar to the PSCS6 i still use.
i dont favor tiff, years ago printer softare, printed a multipage scan to that file format, now they are unusable. I know they take up less space than a psd so so much is unusable going back to 1979.. but cant do anything about, puters wanting to be big phones