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Home / Blog / Free Methods to Add Signature to PDF in 2022 [100% Workable]

Free Methods to Add Signature to PDF in 2022 [100% Workable]

By Roche | Follow twitter | Updated on July 28, 2022 | Deutsch
As digital documents become more prevalent in a paperless office, electronic signatures are no stranger to us because of their portability and security. This new trend from the wet ink signature to e-signature has greatly enhanced efficiency and streamlined workflow. Do you have any idea of how to add a signature to a PDF

We may have experienced how inconvenient to collect conventional wet ink signature. That's why we warmly embrace legally-binding electronic signature. If you ever thought of creating an electronic signature and adding it to a PDF file, you've made the right call. This post explains how to add a signature block to a PDF.

How to Add Signature to PDF on Windows

SwifDoo PDF

SwifDoo PDF comes as a versatile PDF program with a wide array of useful features, including creating e-signatures and adding signature blocks to a PDF. If you need a reliable free PDF signer to add signatures to PDF on Windows 10, 8, and 7, SwifDoo PDF may work for you.

This signature creator now supports making a new electronic signature by typing, handwriting, or uploading an image of an existing signature (.jpg, .png, .tif, and .bmp). Let’s dive into how to electronically sign a PDF using SwifDoo PDF:

Step 1: Download and install SwifDoo PDF from the official website or Microsoft AppSource;

Step 2: Launch the program and upload a PDF document;swifdoo-sign-pdf

Step 3: Once the PDF is opened, click Advanced > Signature to create an electronic signature using the three methods we introduced above;

Step 4: Select OK to insert this newly created e-signature in the PDF.

                                                                    Free Download

Note:  SwifDoo PDF is a Windows-based signature creator and signer. It does not allow users to add a digital signature block to a PDF, however.

Foxit PDF

When it comes to the document management industry, Foxit PDF is a feature-rich program that cannot be ignored. As for electronic signatures, Foxit PDF is much more helpful than the previously mentioned SwifDoo PDF as it provides more features to electronically sign a PDF, such as allowing digital signatures and certificate signatures. Here are the details to add a signature block to a PDF document : 

How to electronically sign a PDF

Step 1: Open a PDF file in Foxit PDF;

Step 2: Click Protect > Fill & Sign and then press the + button to create a new electronic signature. Foxit PDF enables users to draw a signature, import from files, and more;


Step 3: After you create an electronic signature, click Save to apply and insert this signature into the PDF.

With Foxit PDF, users can add this e-signature to multiple pages by right-clicking on the signature and choosing “Place on Multiple Pages”. This saves time when a PDF has many signature fields to fill in.

How to digitally sign a PDF 

Since digital signatures enjoy higher confidentiality and security, the process of adding a digital signature to a PDF is more difficult:

Step 1: Click Protect > Sign & Certify > Place Signature;


Step 2: Draw an area on the PDF and start creating a digital signature;

Step 3: Fill in the information as needed. When ready, click Sign to add this digital signature to the PDF.

Foxit PDF lets users add a date and location to fillable PDFs. Aside from that, users can also add a signature box, block, or line to the page. To reach a wider audience, it is now compatible with Mac, Windows, iPhone, and Android. If you need to add an electronic signature or digital one to your PDFs, Foxit PDF may be a good signature signer.

Tips:  If you want more similar recommendations on Mac or iPhone, Wondershare PDFelement, and Adobe Reader are professional signature signers that are worth a shot.

How to Add Signature to PDF on Mac

If macOS users want to electronically sign a PDF, no third-party programs are required. The native free PDF signer Preview is a recognized go-to option. 


As a default PDF viewer on Mac, you've possibly ignored how amazing it is. It is indeed an effective signature maker while enabling users to easily add a signature block to a PDF. Now follow the instruction below to figure out how to sign a PDF document on Mac:

Step 1: Open a PDF document in Preview, click on the Sign button;

Step 2: Select a saved signature and place it somewhere needed. Change the signature size by using the handles;

Step 3: When ready, hit the Done button to add a signature block to this PDF.

Preview has the abilities to create an electronic signature in PDF: by trackpad, front-facing camera, and iPhone or iPad. For PDF with existing signatures, this post may be of great interest to you.

Approaches to Remove Signature from PDF [Newest]

Approaches to Remove Signature from PDF [Newest]

PDF signatures can protect PDFs from being modified or changed. But sometimes we need to delete these signatures. See how to remove signatures from PDFs.


How to Add Signature to PDF Online


Signaturely is a dedicated Internet-based signature maker which strives to make the signing process super simple. If you don’t already have your electronic signature, try this free signature creator to make a cool signature by typing your name, drawing (handwritten signature), or uploading an image without any difficulty.


On top of being an online signature maker, Signaturely is a team collaboration platform that can add a signature block so that users can choose to whom to send this document.

Users only need to upload a PDF document into the platform and hit the “Send” button and the file that needs an e-signature will directly go to the signer’s mailbox.  

As a collaborative platform, Signaturely can grant admin- or member-level access for your teammates. If someone has electronically signed the document or forgets to e-sign a document, Signaturely will push notifications to ask for signing a PDF.

For users who may need contract templates, this platform provides different types of free contracts, such as SEO proposals, payment agreements, and intellectual property agreements.


Since most PDF signature creators are desktop programs, here we’d like to introduce an online application to help create and add e-signatures to PDFs: pdfFiller. This is a comprehensive PDF-related service provider, which enables users to convert & compress, split & merge, view & edit, and sign & protect PDFs.

As an online PDF signer, pdfFiller provides multiple options to create a new e-signature: type a signature (full name or initials), draw a signature, import an image of your signature from a local device, capture a signature, or add signature via QR code. Users can choose the method that works best for them.

Let’s take a closer look at how to sign a PDF online with the support of pdfFiller:

Step 1: Enter the URL on the search bar, and then upload a PDF document from your device or other cloud storage platform (Dropbox, Box, OneDrive, Google Drive,);


Step 2: When the PDF has been loaded, click Sign to process. If you already have a personal e-signature, just upload the image. Otherwise, create a new one as described above;

Step 3: Choose the electronic signature and insert it anywhere you need. If you need to add a date to the signature, choose Date and that’s all.

If you need additional information about how to electronically sign a PDF, this post below is a supplement to this article.

In Closing

Indeed, electronic signatures are more convenient while remaining legally binding, so there is no wonder why this form of the signature has risen in popularity among businesses.

Desktop PDF signature creators enable users to add digital signatures of higher security to documents while most online platforms can only add an electronic signature to a PDF. However, the biggest strength of web-based tools is that users don’t need an account to perform such signing tasks.

Common FAQ about Free Methods to Add Signature to PDF in 2022 [100% Workable]

Q:Why can't I add new signatures to my PDF?

This issue can be caused by many different reasons. Commonly, it is caused by a bug, and the most straightforward method is to contact the support staff and provide relevant screenshots: your software version and operating system. If it's convenient for you, you can check if you have authorized the program to edit the PDF by right-clicking on the PDF and choosing "Properties" > "Security".

Q:How can I  add an e-signature to an email in Gmail?

Adding a signature in Gmail is not complicated as long as you have a well-designed personal signature already:

Step 1: Launch Gmail and look for the Settings icon in the top right corner (shown as  a gear);

Step 2: Choose See All Settings and navigate to Signature;

Step 3: Select Create New to upload an image or type a signature.

When you finish the settings, your signature will be appended at the end of all messages.

Q:What are the main differences between a digital signature and an electronic signature?

A digital signature is used to secure and protect a document, and can provide evidence of the origin, identity, and status of e-documents. It is based on public-key or cryptography. However, an electronic signature is for verifying a file and is used as a replacement for a traditional ink signature.

Relatively speaking, a digital signature enjoys enhanced security and usually creates more data within the signature.



Roche has been an active PDF user for 6 years and tried different types of professional PDF tools (both online and desktop version) since at his bachelor degree. Now, Roche works as a columnist for SwifDoo PDF over the course of the last one year, and provides useful and practical solutions pertaining to various PDF topics for users from different features.

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