Fill & sign a PDF, free and without an account
Fill in a PDF form online and add your signature: type text anywhere on the page, add today's date and checkmarks, and draw, type or upload your signature. Then download the signed PDF or send it as a fax. No account, no watermark, and nothing is uploaded: the whole thing happens in your browser on this device.
Last updated:
Nothing is uploaded. Your file is opened, filled and saved by your browser on this device, and is gone when you close the tab.
Drop a PDF or a photo here
PDF up to 50 MB, or a JPG, PNG or HEIC photo (placed on a Letter page)
How this works
Everything runs in your browser, with the open-source libraries pdf.js (to show the pages) and pdf-lib (to write the PDF). This is what happens to your file.
- Opening the file
- Your browser reads the file from your device and draws each page with pdf.js, the PDF engine used in Firefox. A photo (JPG, PNG or HEIC) is placed on a Letter page with a quarter-inch margin, the way FaxUp's send page places photos. Nothing is sent to a server at any point.
- Where things go
- Each text box, date, checkmark and signature is stored by page and position in PDF points (1/72 inch), not in screen pixels. That is why items stay in place when you rotate your phone, resize the window or zoom.
- Text and dates
- Text is written into the PDF as real text in Helvetica, one of the fonts every PDF reader has built in. Helvetica covers English and Western European letters; text with other letters (for example Greek, Cyrillic or Chinese) is saved as a high-resolution image of the text instead.
- Form fields
- If the PDF has fillable fields (text boxes, checkboxes, dropdowns, radio buttons), they are listed under Form fields and shown on the page. When you save, the values are written into the fields with pdf-lib and the form is flattened: the fields become part of the page, so every viewer and fax machine shows the same thing and the values can no longer be edited. If a field is broken, the copy is saved with the fields filled in but still editable.
- Your signature
- A drawn signature follows your finger, pen or mouse; the line is smoothed and gets thinner where you move fast, like ink. A typed signature uses Dancing Script, a free script font served from this site. An uploaded one can have its paper turned transparent. All three become a transparent PNG image that is placed on the page. It is a picture of a signature, not a certificate-based digital signature.
- Protected PDFs
- A PDF that needs a password to open can't be used; remove the password first. A PDF that opens but is protected against editing can still be signed: the saved copy keeps each page as an image at 200 dpi with your additions on top, and its form fields can't be filled directly.
- Saving and faxing
- Download PDF saves the finished copy to your device. Send this as a fax stores that copy in your browser's own storage on this device and opens FaxUp's send page with it already added as the first file.
Questions
Is anything uploaded?
No. The PDF is opened, filled, signed and saved by your browser on your device. It is not sent to FaxUp or anyone else, and it is gone when you close the tab. Our analytics record that the tool was used, with counts such as the number of pages and items added, never the file, what you typed or your signature.
Is it really free? Do I need an account?
Yes, it is free and there is no account or sign-up. There is no watermark and no limit on how many documents you sign. You only pay if you choose to send the signed PDF as a fax.
Is a signature added this way legally valid?
Electronic signatures are generally accepted for many everyday documents in the US (under the ESIGN Act and UETA), the EU and many other places, but some documents need a handwritten or certified signature, and the recipient decides what they accept. Check with them if you are not sure. This tool places an image of your signature on the page; it is not a certificate-based digital signature and does not record who signed or when.
How do I fill in a PDF form?
Open the PDF. If it has fillable fields, they appear highlighted on the page and in the Form fields list; type into them there. If it has no fields (a scanned form, for example), choose Text and tap where the answer goes, then drag the box into place. Checkmarks and today's date work the same way.
Can I add a signature on my phone?
Yes. Choose Signature, draw with your finger in the box (or type your name, or upload a photo of your signature), then tap the page where it goes. Drag it to move it and drag the corner handle to resize it. The page fits the width of your screen.
Can I fax it?
Yes. Send this as a fax opens FaxUp's send page with the signed PDF already added. This tool is free; sending the fax is paid, per fax (see Pricing). You can also download the PDF and send it any way you like.
Can I edit the PDF again later?
Not with the fields and items you added: the saved copy is flattened, so they are part of the page. Keep your original file if you might need to change something, and open it here again.
Need to fax it?
Upload your document on the send page, enter the fax number and follow the status until it is delivered. You pay per fax, any number of pages. To check how it will print first, use the fax preview.
Send a fax