How to electronically sign a PDF
Quick answer: To electronically sign a PDF, open the file in an e-signature or PDF editing tool, create your signature by drawing, typing or uploading it, and place it on the signature line. In Quick PDF you tap Sign, add your signature, position it, and download the signed PDF. The result is a legally recognized electronic signature for most everyday US documents.
Sign in with Google or email and start editing. Saving your file starts a free trial: 7 days on yearly ($29.78/yr) or 2 days on monthly ($2.99/mo). Cancel anytime. 🔒 Your file stays on your device.
"Please e-sign and return" shows up on job offers, leases, school forms and invoices. An electronic signature (often called an e-signature) is simply your signature added to a document digitally instead of with a pen on paper.
This guide explains what counts as an electronic signature, how to add one to a PDF in your browser with Quick PDF, what the law generally says in the US, and the honest limits: when you need a signing service with audit trails, or a certificate-based digital signature, instead.
Electronically sign a PDF with Quick PDF
- Open the PDF in Quick PDF Go to quickpdfapp.com in your browser, sign in, and open the PDF from your device. The file is processed in your browser and stays on your device.
- Choose Sign Tap Sign in the editor toolbar to open the signature panel.
- Create your e-signature Draw it, type your name and pick one of six script fonts, or upload a photo of your handwritten signature. Choose black, blue or dark red ink.
- Save it for next time (optional) Turn on Save for next time to keep the signature on this device for your account, so future documents take one tap.
- Place the signature on the document Tap the signature line, then move and resize the signature. Repeat on any other page that needs it.
- Complete and save the signed PDF Add the date or printed name with Add text if needed, then tap Download or Share to send the signed document.
What counts as an electronic signature?
In US law an electronic signature is broadly any electronic sound, symbol or process attached to a record and adopted by a person with the intent to sign. In practice that includes:
- A signature drawn with your finger or mouse on a document
- Your name typed in a signature font
- An image of your handwritten signature placed on the page
- Clicking an "I agree" or "Sign" button in an online signing service
What matters most is that you meant to sign, and that the signed document can be kept and reproduced later. Quick PDF's Sign tool covers the first three: it places an image of your signature on the PDF.
Are electronic signatures legally binding?
General information, not legal advice: in the United States, the federal ESIGN Act (2000) and the Uniform Electronic Transactions Act (UETA), adopted by most states, say a signature or contract cannot be denied legal effect just because it is electronic. That is why e-signatures are widely used for leases, employment paperwork, sales contracts and consent forms.
There are exceptions. Wills and testamentary trusts, many family law documents, some court papers and documents that must be notarized in person can have different rules. A business can also ask you to sign a specific way. When in doubt, check with whoever asked you to sign.
What Quick PDF's e-signature does, and what it does not do
| Quick PDF does | Quick PDF does not |
|---|---|
| Draw, typed script-font or uploaded signatures | Send documents to other people to sign |
| Black, blue or dark red ink | Track who signed and when (no audit trail) |
| Save your signature for next time on your device | Add a certificate-based digital signature |
| Fill forms, add text and dates, flatten the form | Send signing reminders or collect signatures in order |
So Quick PDF fits the most common situation: someone sends you a PDF, you sign it and send it back. If you are the one collecting signatures from several people and need a record of who signed when, a dedicated e-signature service is the better tool. The difference between e-signatures and digital signatures is covered in electronic vs digital signature.
E-signing on different devices
- iPhone and iPad: open quickpdfapp.com in Safari, open the PDF from Files. Drawing with a finger or Apple Pencil works well. See sign a PDF on iPhone.
- Android: use Chrome; PDFs you download are usually in Downloads.
- Windows and Mac: a typed signature or an uploaded photo usually looks cleaner than one drawn with a trackpad. See sign a PDF on Windows.
- Chromebook: open the PDF from the Files app's Downloads folder; touchscreen models let you draw with a finger.
You can add Quick PDF to your home screen like an app, so it is one tap away the next time a document arrives.
Good habits when you e-sign documents
- Read before you sign. Zoom in on small print. Signing electronically is just as serious as signing on paper.
- Keep a copy. Download the signed version and store it somewhere safe.
- Lock your answers. On fillable forms, choose Flatten form when downloading so filled fields cannot be edited afterward.
- Send sensitive files carefully. Forms with your Social Security number or bank details deserve extra care; see how to send a PDF securely.
- Use the same signature each time. Save for next time keeps it consistent.
Troubleshooting e-signatures
The document has a "click to sign" field
That field is designed for certificate-based signing software. You can place your Quick PDF signature on top of it visually. If the sender requires that specific field to be completed, ask them which tool they want you to use.
My signature looks pixelated
Upload a sharper photo or draw it larger, then shrink it on the page.
The sender says the file was changed after signing
Some senders check documents with tools that look for certificate-based signatures. A Quick PDF signature is an image, so it will not show up there. Ask whether an electronic signature image is acceptable.
Questions people ask
What is the difference between an e-signature and signing on paper?
An e-signature is added to a digital document by drawing, typing or uploading your signature or clicking a sign button. In the US it generally carries the same legal weight as ink for most documents under the ESIGN Act and UETA, with some exceptions such as wills.
Can I electronically sign a PDF on my phone?
Yes. Open quickpdfapp.com in your phone's browser, open the PDF, tap Sign and draw your signature with your finger, then download or share the signed file.
Does Quick PDF send documents to other people to sign?
No. Quick PDF is for signing documents yourself. It does not send signature requests, collect signatures from others or keep an audit trail. You can share the file and the other person can add their own signature in turn.
Is an electronic signature the same as a digital signature?
Not exactly. An electronic signature is any electronic mark you use to sign. A digital signature is a specific technical method that uses a certificate to prove who signed and that the file was not changed. Quick PDF adds electronic signatures, not certificate-based digital signatures.
Do I need to create an account to e-sign?
Yes, Quick PDF needs you to sign in with Google or with email and password. Your PDF itself is still opened and processed in your browser on your device.
Can I remove an e-signature after placing it?
Before you download, yes: tap the signature and delete it or use Undo. After you download a flattened or shared copy, the signature is part of that file, so keep the original if you might need to redo it.
Do I have to pay to use Quick PDF?
You can open a PDF and edit, sign or fill it after signing in with Google or email. To download, print or share the finished file you start a subscription with a free trial: 7 days on the yearly plan ($29.78 per year) or 2 days on the monthly plan ($2.99 per month). You are charged when the trial ends unless you cancel, and you can cancel anytime.
Sign in with Google or email and start editing. Saving your file starts a free trial: 7 days on yearly ($29.78/yr) or 2 days on monthly ($2.99/mo). Cancel anytime. 🔒 Your file stays on your device.