How to Sign Documents Electronically – No Ink or Paper Required

electronic signature You are working hard to achieve that perfect paperless office but there are some things that still require paperwork. For instance, you just received a contract via electronic fax that you are supposed to sign and fax it back. Or there’s a PDF / Word document waiting in your email inbox that you need to print on paper, put your handwritten signatures, scan the signed copy and send it back to the client again via email.

That process is both time consuming and forces you to do something that you are trying so hard to avoid (i.e., use paper). So if you are looking to eliminate paper from the loop, here are some software tools, web services and workarounds that will help you capture your signature directly on the electronic file without requiring paper or ink.

How to Digitally Sign Documents

The first step is to create a digital image of your signature – there are multiple ways of doing that:

Option #1. If you have an iPhone, iPod Touch or any touch sensitive mobile device, use an app like “Fountain Pen” or “Sketch Pad” to draw your signature using your fingers and then transfer the image to your computer.

Option #2. If you have don’t have access to a touch phone or a scanner, put your signatures on a white piece of paper and take a photograph of that paper using your digital camera or even the camera of your mobile phone (some tips).

Option #3. Alternatively, you can use any graphics software (like MS Paint), an online image editor (like Splash Up) or even Google Docs (see video) to draw your signature with the mouse pointer. I like the Google Docs options since it creates a transparent stamp of your signature.

Option #4. Go to Live Signature, draw your signature on the screen and click the “Create Signature” button to download your signature as an image.

Now that you have the written signature in image form, the next step involves putting that e-sign image into the document.

If the contract or agreement is in Microsoft Word or any other common editable format, things are pretty easy. Open the document in any Word processing software (or Google Docs) and insert the signature image inline. Save the document as PDF and email it back to the client.

How to Sign a PDF Document

If the initial document is in Adobe PDF format, you need to follow a couple of extra steps because, unless you have a PDF editor like Adobe Acrobat, editing PDF files is not always straight-forward.

Option #1: Convert the PDF document to Word using this free web service, add the image to the Word file (as in the previous example) and export the document as PDF to prevent editing. The PDF to Word service may not always replicate the exact formatting and appearance of the original PDF file but it’s still very close especially in the case of text documents.

To password protect your signed-PDF documents, open the document inside PDF Hammer, add a password restriction and re-export it as PDF.

Option #2: If the PDF document that you have to sign is long or includes complex formatting, conversion may not be the right option for you. In that case, you have two choices:

2 a: PDF X-Change – This is awesome PDF Viewer for Windows that also includes some very useful editing features.

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Import the signature image into the Stamps Palette, open the PDF file that you want to sign and use the stamps tool (under Tools -> Comment & Markup) to sign anywhere in the document. You can then export the signed document as PDF and none of the original formatting should be lost.

2 b: OpenOffice Draw – The latest version of OpenOffice 3.1 along with this free Sun Extension can be used as a PDF editor.

Once installed, click the OpenOffice icon on your desktop and open the PDF document – this will auto open in OpenOffice.org Draw. Now choose Insert -> Picture -> From File to insert the signature image anywhere in the PDF file.

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The good part about OpenOffice is that it is available for Windows, Mac and Linux platform but there’s no individual install for the Draw module so you’ll have to download the full 150 installer of OpenOffice.org but choose to install only Draw at setup.

Web Apps for Electronic Signature

The options discussed above are handy if you have to sign documents but what if you are on the other side of the fence and need another party to sign your document electronically.

In that case, you should consider using web based signatures services from either EchoSign or Right Signature – they both work on similar lines. You upload a PDF or Word document that needs to signed and also specify the email addresses of people who have to sign that file. The recipients can open the document inside their web browser, add their signature (with the timestamp) and done.

You can then download the signed document on to your own computer. There’s no software to install and no sending fax messages back and forth. Both Echo Sign and Right Signature are paid services but trial users can send up to 5 documents for free.

Related: Your Guide to Adobe PDF Tools

[*] These electronic signatures should not be confused with Digital Signatures that can only be had from certification authorities such as Verisign. Electronic signatures on documents are also considered legally binding in most countries.

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Reader Comments

On a Word document or any of these options, how do you ensure your the image of your digital signature isn’t saved onto someone else’s hard drive, and be used for nefarious purposes?

It does give the looks of a real signed document to your digital document, but will create security issues if people start treating it like real signatures.

If recipients give these digitized signatures the same value as real ones, it would be easy for others to create forged documents by copying the signature into them. Unlike real paper documents, where it takes some amount of skill to perfectly duplicate a signature, all it takes is a copy-paste. Even in copy-protected PDFs, all it takes is a ‘print screen’ button press to get a copy of the signature.

Even if the sender didn’t mean to give an official approval to the contents of a letter, the recipient might assume as such. I say this because I had tried this a few years back, and it sort of backfired. So, I think its a bad idea to use these.

By inserting an image file of my signature, into a document, am I not making this signature available to any one and everyone? Can’t any one cut and paste this image file of my signature into any other document and use my signature at will?

how to transfer the image(signature) to the document received through e mail.

And what would be the use of signing the documents this way? Also most contract documents would require you to put a proper digital signature (otherwise it’s not a legal contract) or if they are of the form like you have mentioned (requiring normal signature), they would already be in a pdf protected from conversion/editing.
Plus IMO, it would be better to put the disclaimer at the top instead of bottom.

But…that’s just a picture. Anyone can scan a picture of your signature. Using HMAC sounds much more sensible to me.

Oh, and digital signatures can certainly be done without PKI or certificate authorities. PGP has existed for quite a long time now.

Though the methods described above seem fine but I have a doubt. What about the misuse of the electronic signatures. Once a person has my signatures and there is need to sign any further document, its just a matter of seconds to retrieve it from my previously editable document like MS word and paste it.
Is it my inability to understand that is creating a confusion of is something more robust required to safeguard oneself against such misuse.

PDF X-Change is not free for signing docs

Someone can steal this signature image and print it on a bank cheque?

Explained step by step which helped me to understand the concept very well :)


Questions & Answers