Each AI tool quotes a credit cost up front — Summarize is 3, Translate is 5, OCR is roughly 2 per page, Compare is 15. The exact figure is shown before you confirm the run, so you never get a surprise charge.
Free tools (Merge, Split, Compress, Rotate & Reorder, Page Numbers, Image to PDF) cost zero credits and run entirely in your browser.
Paid credits never expire. Refunds are available within 14 days for any unused credits — see the refund policy article for the form.