Can I sign a document online?

Absolutely. pdfFiller allows you to sign any document using our Division technology. You can use a signature font or upload a signature file and apply it anywhere on the document.

What is a digital signature?

A digital signature is the process to authorize a digital message or document with a certificate-based digital ID. A valid digital signature means the identification of a signer has been verified. Digital signatures are most often used to apply a digital “seal” to an electronic document in order to make it tamper-evident.

How does pdfFiller verify electronic signature?

pdfFiller can offer an audit trail to show by whom and when the signature is created. With pdfFiller's new feature “Signature Verification”, you can get instant signature verification and sign your file digitally and securely. pdfFiller will work as a trusted third party, or a certificate authority (CA). When you and your client draw, upload or capture a signature, pdfFiller will instantly provide a digital certificate to validate your electronic signature. With pdfFiller's cloud technology, you can also get a digital certificate when accessing and working on your PDF files from an iPad, iPhone and other mobile device.

What's the difference between an electronic signature and a digital signature?

An electronic signature can be any piece of data like an image, a symbol, a sound recording and others. You can create an electronic signature skimpily by typing your name or uploading an image. A digital signature is an authorization to verify an electronic message or document with a certificate-based digital ID. A valid digital signature means the identification of a signer has been verified. Digital signatures are most often used to apply a digital “seal” to an electronic document in order to make it tamper-evident. A digital signature is a secure form of an electronic signature.

Can I edit my signatures?

Yes. Use our “Signature Manager” to change the color or smoothing of your signatures. You can also add multiple signatures by uploading, capturing, typing or drawing.

Can I upload a signature from my computer?

Yes. Click on the “Signature” button in “Editor” page to upload, draw, type or capture your digital signatures. Once you're done with creating your signatures, click “Save” and drag your signature anywhere within the document to use.

Do I need to upload a signature every time?

No, you can save the signature and use it repeatedly any number of times on any number of documents.

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Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT

Based on 12500+ reviews

Last updated on Jan 16, 2026

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pdfFiller scores top ratings on review platforms

I originally subscribed to the website confused about how much the yearly subscription cost. I was able to cancel my subscription, get a refund and finish up working on my documents. All in all, after the 30 days free is up, I think I will subscribe to the 19.99$/month. Very helpful site and service!

Sandy G

Making my job a lot easier using this… Making my job a lot easier using this product. A little difficult to navigate. I'm sure it will come easier with more frequency of using the product.

Leatrice Jones

Easy to Use PDF Filler It's very easy to upload documents and complete the forms. We use it for all of our documents. I sometimes have trouble with my signature loading. My printed signature always loads but my written one does not always load. I'm not sure what causes the signature failure but it is sometimes a problem.

Stephen N.

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PDFfiller worked flawlessly. The one time I contacted their support with a request they responded promptly and professionally - very impressive. Highly recommend.

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I had an issue, and customer service reached out right away to offer help! I will use them from now on, good service makes all the difference! Thank you! **

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