- Is my file really not uploaded?
- Yes. Every step, from reading the file to OCR, flattening, resizing, compression, and the fix report, runs inside your browser using WebAssembly. You can turn off Wi-Fi and it still works. Only your sign-in and a small status check ever reach our server. Your document's bytes never do.
- Do I need to install or sign up for anything?
- No. docu runs in any modern browser with nothing to download or install. You can drop a PDF and see what's wrong for free, without an account.
- What can docu actually fix?
- Six mechanical problems: it compresses PDFs that are over a size limit, adds an OCR text layer so scanned pages are selectable and searchable, flattens filled form fields so answers can't change, resizes pages to 8.5 × 11 US Letter, strips hidden author metadata, and removes embedded scripts that secure uploads reject.
- Can you remove a password from my PDF?
- No. If a file is encrypted or password-protected, docu detects it and asks you to unlock it in your own PDF reader first, then re-open it here. We never crack, bypass, or strip protection.
- Will fixing change how my document looks?
- No. The fixes are mechanical, not cosmetic. OCR text is added invisibly beneath the existing image, flattening and resizing keep the page visually identical, and compression only downsamples oversized embedded images. docu re-checks the result so you can confirm before you download.
- How much does it cost?
- Checking what's wrong with a PDF is always free. Repairs are paid. See the pricing section above for current plans, whether that is paying per fix or an unlimited monthly plan. The prices and options shown there are the source of truth.
- Do you keep a copy or log of my document?
- No. Because the file never leaves your device, there is nothing on our side to store, queue, or log. Your fix report is generated locally, on your machine.