Vellum reads a PDF’s attachment mechanism (the same one electronic invoices or legal case files use to embed their appendices) and lists it out: name, size, type and description of every file. Each attachment can be extracted individually or all together as a ZIP archive; new files, of any type, are added by a simple drop, and an existing attachment is removed with one click. Nothing is sent to a server: both reading and writing the PDF happen on your device.
Any kind — a PDF can embed an e-invoice XML file, a spreadsheet, an image, or another PDF. This mechanism is separate from images or visible text on the pages: an attachment is downloaded, not displayed.
Once the file is dropped, each listed attachment offers a button to extract it individually, or a single button to grab them all at once as a ZIP archive — handy when a case file carries several.
Yes, by dropping them into the dedicated area: they’re added to the existing attachments once the changes are saved. The MIME type is inferred automatically from the file.
Before saving, yes: a marked removal can be undone with one click. Once the modified file is downloaded, though, the removal is final in that new file — keep the original if you’re not sure.
Vellum — free PDF tools whose processing stays on your device.