Protect PDF
Add an AES-256 open password to a PDF, or restrict printing, copying and editing without a password. Encryption happens on your device; your password is never sent anywhere.
Open the tool- Your file never leaves your device: it is processed in your browser, not uploaded.
- Free; one file a day needs no account.
How to use it
- Choose your file or drag and drop it.
- Type the password and choose the permissions.
- Download the result; the file name comes from your document's title.
Frequently asked questions
- Is Protect PDF free?
- Yes. One file a day needs no account at all. Sign up free with email and password to use every tool without limits for a year; no credit card needed.
- Is my file uploaded to a server?
- No. It is processed in your browser on your own device; your file is never sent to a server or stored.
- Does it work on my phone?
- Yes. It works in the browser on Android phones, iPhones, tablets and computers; nothing to install.
- Is there a file size limit?
- Without an account, one file a day (up to 10 MB) is processed right away. With a free account, large files and unlimited files are processed too.
More tools
- Handwriting to textTurn a photo of your notes into editable text.
- Read printed textFree OCR; the photo never leaves your device.
- Scan documentSnap the paper; edges are straightened into a PDF.
- Searchable PDFSearch and copy text in scanned PDFs.
- Convert filesBetween Word, Excel, PDF, text and images.
- Edit WordOpen the document as it looks in Word and fix the text in place.
- Reduce sizeShrink a file to the KB or MB you need.
- Compress PDFMake a PDF smaller while keeping its text.
- PDF to imageTurn pages into JPG or PNG.
- Split PDFBy range, equal parts or file size.
- Merge PDFCombine PDFs and photos into one file.
- Edit pagesRotate, delete and reorder pages.
- Extract pagesA new PDF from the pages you pick.
- Crop PDFTrim the page margins.
- Create formAdd fillable fields, checkboxes and dropdowns to a PDF.
- Write & draw on PDFAdd text, highlights, drawings, images and notes.
- Booklet / pages per sheetFit 2–4 pages on a sheet or print a booklet.
- Rotate PDFTurn pages right, left or upside down.
- Delete PDF pagesPick the pages you do not want and delete them.
- Edit PDF textClick the text in a PDF and change it.
- Add letterheadStamp a letterhead, logo or template on pages.
- Optimize PDF for webMake a PDF open fast online.
- Convert to PDF/AThe archive format institutions require.
- Verify PDF signatureCheck whether an e-signature is valid.
- Grayscale PDFMake a colour PDF grayscale; text stays searchable.
- Compare PDFsMark the text differences between two versions.
- Split double pagesSplit pages scanned side by side into single pages.
- Header / footerAdd date, document name and page numbers to pages.
- Document infoEdit or remove hidden info such as author and title.
- Repair PDFFix PDFs that will not open or show errors.
- Redact PDFBlack out IDs, IBANs and other private data for good.
- Page numbersYou choose the position and style.
- Add watermarkText such as "CONFIDENTIAL" or "DRAFT".
- Sign PDFDraw your signature or upload a photo of it.
- Fill PDF formFill in application and other PDF forms.
- Flatten formLock filled-in fields in place.
- Remove digital signatureRemove e-signature fields.
- Unlock PDFRemove the password or restrictions.