Of all the things you mean by “editing” Photoshop supports only 3 scenarios as you try to open a PDF. Open chosen pages as separate rasterised images with custom rasterisation settings. Open all or selected images embedded in the PDF as individual files, with size and quality matching those in PDF. Open only the 3D models from the PDF (if it has any) to use in Photoshop’s 3D workflows. It’s all in the “Open PDF” dialog. For details refer to the place with all the answers. Photoshop’s online help. There is no object or text editing unless it’s a special variety of PDF called Photoshop PDF. That is in a way the 4th scenario, as these PDFs open without any extra confirmations. T can only originate in Photoshop and are functionally similar to PSD, only saved to PDF with Ps-specific format extensions. These guys will retain everything you ask them to. layers, smart objects, text objects and vector shapes. Text and vector stuff will also stay vector when that PDF is used elsewhere. Whatever was editable in Ps at save time will stay editable unless you uncheck in Photoshop the default compatibility options in the Save dialog.
Saving to PDF has the usual risks as we know from the other questions on Pin shape. If the PDF is not a proper save, the app will crash with a message like ‛PNG File Format‛, ‛The following files have expired, or ‛Not a valid file according to PS. The app will go into a recovery screen where you have to restart your computer to continue saving, this can take a while and can also generate a lot of useless disk space. When saving an image from within the app, you will get the following error: What exactly does this mean? You will lose most of the image but if you were working with a lot of images, the loss is minimal. Save to PDF will create a lossless image with the same file size for the PDF version of everything you edit. This means this.