How to Send a PDF to a Fax Machine Online

how to fax a pdf

​​​You can fax a PDF online using 3 ​alternatives: ​through an email-to-fax service, a smartphone fax app or by using a website form. These PDF-to-fax alternatives will allow you to convert .pdf files (among many others) into analog fax signals, which can be received by any traditional fax machine on the planet.

​Option 1 - Using ​An Email to Fax Service


​You can send a PDF via fax ​by composing a new email and attaching your file to it.  Then you simply click Send and wait for a confirmation message.

​There are various ​online fax services that work with multiple of file formats, among them PDFs.

What You'll Need

  • An email address​
  • An online fax service

​All online fax plans let you convert your attachment to a fax, keeping compatibility with ​any fax machine in the market. And since you are using web-based technology to ​do it, ​you can ​fax a pdf from your Mac ​or PC computer the same way.

Services like eFax and RingCentral let you create a free account in a few minutes for 30 days.

Sending fax through email

Let’s take a look at how ​to fax a from ​a desktop computer using your email:

  1. Compose a new email.
  2. On the TO field enter the number followed by (the actual domain name will be given to you on an email).
  3. Enter the cover message on the MESSAGE field.
  4. Attach a ​.pdf file from your computer.
  5. ​Click on Send

For an in-depth tutorial on how to ​send a fax via email, visit our guide ​on how to send fax ​to email here.

​Option 2 - ​Sending Fax Through a Smartphone ​


​If you are always on the go, you can fax a PDF directly from your phone by downloading a mobile fax app for iPhone or Android. Simply open the app, attach the PDF, and fill out the number before clicking on Send.

Types of Fax Apps

There are two types of apps out there: those that come as part of an online fax service, and those where you need to pay for each fax you send.

​The first option gives you more flexibility because if you are not on your phone, you can simply fax the PDF document from your desktop computer or with your email.  But you need a monthly plan.

The second option is better suited for those of you who only want to send an occassional fax.  Why? Because although paying per fax can end up being more expensive than paying for a monthly plan, it really doesn't matter when you are just faxing a couple of pages.

In any case, make sure the service and app you are using is compatible with PDF.  Some apps only let you fax documents "scanned" with your phone's camera.

​Option 3 - Fax Websites

​​If you want to fax files from your computer without spending any money, you can use a website that lets you send fax free. These websites let you send up to two pages per day,​ and most of them support PDF ​to fax.  The two best free fax services we recommend are MyFax Free and FaxZero.


Do We Recommend Them?

But… well we wouldn’t recommend sending fax online with these services if faxing is a serious part of your office. This is because with these services you are not only limited in terms of quantity, but each of your faxes may or may not arrive with a cover page with ads.

If, on the other hand, you never send a fax and need to send one right now, they are a pretty good alternative. And saves you from having to find the nearest office store.

If you are planning to fax regularly, you will be better off with an online fax service, since these “free” websites then charge you a certain amount per page, which can quickly become more costly than a service that lets you send 300 pages per month.

If you are looking to start without spending money, a better alternative is to sign up for a free trial, this way you will be able not only to send but also to receive faxes during a full month.

Also: Using paperless fax to help the environment

​Can I Fax from Acrobat?

If your service has an plugin, you can send a fax from Acrobat by clicking on File> Print and selecting your service from the printer on the list.

This should direct you to a new window where you need to enter all the fax details like number, cover page, etc.  Once finished, you just Send it, after about a minute expect to receive a confirmation message in the associated email account.

​Receiving Fax ​to PDF

​If you prefer using an online fax service, you can also receive faxes converted to PDFs.  That's because they provide

Your number will redirect incoming fax transmission to fast fax servers, where they will be converted into a digital file, in this case a PDF. Once converted, the resulting file is attached to an email message with all the details of the transmission. After it has arrived to your email, you can read it or download it as you wish.

Learn more about the benefits of using PDF for faxing.

​Final Words

In this article you’ve learned how to convert ​PDFs to fax ​online without having to depend on a fax machine or an office supply store. As you can see, you don’t even need a fax number if you don’t want to receive faxes or if you are just looking to fax occasionally. With online solutions you can reduce the time and money you spend faxing, online faxing is simple, and you can get started within minutes.