Fill and sign a PDF

How to fill and sign a PDF

1. 1Select Choose file or drop a PDF on the page.
2. 2If the PDF has fillable fields, fill them in under Form fields beside the page. The field you are editing is highlighted on the page.
3. 3Select Add signature and draw, type or upload it. Use Text, Date (today’s date) and Checkmark for anything else; edit the words of a selected text in the panel beside the page.
4. 4Drag each item into place and resize it with its corner handle. With the keyboard, select it and use the arrow keys to move it (with Shift, 10 points at a time), + and − to resize it, and Delete to remove it.
5. 5Select Save signed PDF, then Download PDF. The file is named after the original, for example contract-signed.pdf.

About the signature

This adds a visual signature: an image of your signature drawn on the page. It is not a certified digital signature: there is no certificate, nothing proves who signed, and the document isn’t locked against later changes. Many people and businesses accept signatures like this; check whether the recipient accepts electronic signatures.

Draw

With a mouse, finger or stylus, in black or blue ink.

Type

Your name in one of 12 handwriting styles, in black or blue ink.

Upload

A PNG, JPG or WebP image, such as a photo of your signature on paper. “Make a white background transparent” is on by default.

Remember

“Remember my signature on this device” is off by default. When you turn it on, the signature is kept in this browser only. Next time it appears with “Use saved” and a Delete button to remove it.

How it works

The PDF is read and saved in your browser with the open-source pdf-lib library; pages are shown with pdf.js. With Flatten (fields can’t be edited afterwards) on, which is the default, every form field becomes part of the page, so it looks the same in every reader and can’t be changed by accident. Turn it off to keep the fields fillable.

Signatures, text, dates and checkmarks are always drawn onto the page. Text in Western European languages is written as real, selectable text; other scripts, such as Greek, Cyrillic or Chinese, are placed as an image so they still show correctly.

Troubleshooting

• “This PDF uses an XFA form …” XFA forms (made with Adobe LiveCycle) can’t be filled here. You can still place a signature, text, dates and checkmarks on the pages.
• “… contains characters the PDF’s form font can’t show …” Form fields use the PDF’s standard font, which covers Western European languages. Clear that field and place the words with Text instead: it works with any language.
• “… is password-protected.” Remove the password in a PDF reader first, then try again.
• “… a button or signature field, which can’t be filled here.” Place your signature with Add signature on top of the signature box instead.

How your data stays private

Everything happens in your browser, on your device. Your files and text are never uploaded, never stored, and never put in the address bar.

• The site’s security policy (connect-src 'self') tells your browser to block any attempt by the page to send data to another server.
• Only your preferences, such as the theme and a tool’s last-used options, are saved in your browser’s local storage. Never your content.
• To check it yourself, open your browser’s developer tools, select the Network tab, and use the tool: no request carries your data.

There is no account, no sign-up and no watermark. After your first visit, pages open without a connection; a tool’s larger parts, such as the PDF and image engines, are saved the first time you use it, so it works offline from then on.

Frequently asked questions