Sign PDF Online
Add your signature to any PDF in a few seconds. Draw it with your mouse or finger, or type your name in a handwriting style, place it on the page and download the signed document. Your file never leaves your device.
How to sign a PDF
- Drop your PDF onto the box above. The signature pad opens automatically.
- Draw your signature, or choose Type and pick a handwriting style. Choose black or blue ink.
- Press Add signature, then drag it onto the signature line. Drag the corner handle to resize it.
- Use Add text to add your name, the date or initials, then press Save & download PDF.
What you can sign
Employment contracts and offer letters, rental and lease agreements, school permission slips, invoices and purchase orders, NDAs, consent forms and any other PDF someone sends you to sign. Signing in the browser saves printing, signing by hand and scanning the pages back in.
Editing tools
- Edit text: click any line of the original PDF to rewrite it in place. Fix a typo, update a date or price, or delete a sentence; the old words are removed when you save.
- Add text: type anywhere, with a choice of font, size, color and bold. Great for filling in forms.
- Sign: draw or type a signature and place it on any page.
- Highlight: mark important passages in yellow, like a highlighter pen.
- Draw: freehand pen for notes, ticks, arrows and underlines.
- Rectangle: box in a section or point out an area.
- Whiteout: cover text, numbers or images with white, then type over it to correct a document.
- Image: add a logo, stamp, photo or scanned signature (JPG, PNG, WebP or HEIC).
Good to know about editing text
A PDF stores text as positioned words, not paragraphs, so editing works one line at a time and longer text doesn’t flow onto the next line. Changed lines use the closest standard font (Helvetica, Times or Courier) in the original size and color. Scanned documents are images, so use Whiteout and Add text on them instead.
Keyboard shortcuts
V select · E edit text · T add text · D draw · H highlight · R rectangle · W whiteout · S sign · I image · Delete removes the selection · arrow keys nudge it (Shift for bigger steps) · Ctrl/⌘+Z undo · Ctrl/⌘+Shift+Z redo · Esc deselect.
Private by design
Most online PDF editors upload your document to their servers. This editor runs entirely in your browser using Mozilla’s PDF.js and pdf-lib, so your file and your signature never leave your device. It’s free, with no account, no watermark and no limits.
More PDF tools
Frequently asked questions
How do I sign a PDF online?
Drop your PDF onto the box above and the signature pad opens. Draw your signature or type your name, press Add signature, then drag it to the signature line and resize it with the corner handle. Add the date with the Add text tool and press Save & download PDF.
Is an electronic signature legally valid?
In many countries, including the US (ESIGN Act), the UK and the EU (eIDAS), a simple electronic signature like this one can be legally binding for most everyday agreements. Some documents, such as certain property, court or notarised papers, need a qualified or witnessed signature. If in doubt, check with the person asking for the signature.
Is this a digital (certificate) signature?
No. It adds an image of your signature to the page, which is what most forms, contracts and HR documents ask for. A certificate-based digital signature that proves the file hasn’t changed needs a signing certificate and a tool such as Adobe Acrobat.
Can I sign on my phone?
Yes. On a phone or tablet you can draw your signature with your finger, then drag it into place. The edited PDF downloads to your device.
Is my signature stored anywhere?
No. Your signature and your PDF stay in your browser and are gone when you close the page. Nothing is uploaded or saved on a server.