Sign PDF

How to use it

1. Choose your file or drag and drop it.
2. Draw or upload the signature and place it.
3. Download the result; the file name comes from your document's title.

Frequently asked questions

How do I add my signature to a PDF?

Draw your signature with your finger or mouse, or upload a photo of your signature on paper; the background is removed. Then move and resize it anywhere on the page.

Is this a legally qualified e-signature?

No. It places an image of your signature on the document. A qualified electronic signature needs a separate certificate and card reader.

How can I tell whether a digital signature in a document is valid?

The Verify PDF signature tool checks the digital signatures in the document and shows whether it was changed after signing.

Is Sign 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".
• Fill PDF formFill in application and other PDF forms.
• Flatten formLock filled-in fields in place.
• Remove digital signatureRemove e-signature fields.
• Protect PDFAdd a password, restrict printing and copying.
• Unlock PDFRemove the password or restrictions.