Batch processing

Vellum applies one and the same operation — watermark, rotation or compression — to several PDF documents at once, which saves repeating the same steps file by file. The result is delivered as a single archive, ready to download. Even with dozens of files, the processing stays local, in your browser.

How do I apply the same operation to several PDFs at once?

Drop in your documents and pick an operation — compression, watermark, page numbering, rotation, password protection or flattening — applied to all of them at once. The result is delivered as a single downloadable archive.

How many files can this tool process in one go?

There is no fixed cap: even with dozens of files, processing stays local, in your browser, with no server queue.

Is batch processing free and does it avoid uploading my documents?

Yes, each document is processed on your own device, with nothing sent to a server, free of charge and with no limit on the number of files.

Vellum — free PDF tools whose processing stays on your device.