If you have a document in electronic format, you can fax it using the Internet and your laptop's Wi-Fi connection. There are a number of sites from which a fax can be sent, but one of the easiest to use is FaxZero, a Web-based service for sending faxes, for free, in the United States or Canada.
It's not the most polished and the service is somewhat slow, more on that shortly. But...FaxZero will get your fax out free. You will have to put up advertisements or pay per fax to make them go away. It is a lightweight option if you have infrequent faxing needs.
It is not a site you will want for heavy faxing, nor can you receive faxes.
You can only send three pages plus the cover page for free, however FaxZero gives you up to five faxes a day. Of course, the pages will be branded with a FaxZero logo. The alternative is to pay $1.99 per fax (via PayPal), for up to 25 pages and a choice of a cover page or no cover page; paying means you'll get no FaxZero branding.
Since you don't have a fax number to receive faxes, you go to the Web page, enter the required information, and you're good to go. If you pay for the branding-free service, or for an international fax, you'll do so using a one-time PayPal payment.
On the site you will be shown a form that supports DOC, DOCX or PDF files, but you can also attach ODT, RTF, PNG, XLS, XLSX, TXT, HTML, TIFF, BMP, GIF, PPT and VSD files. You're limited to three attached files.
The online form is easy to follow. Simply enter the required sender information (your name, email and phone number) and receiver information (name and fax number).
Then choose the files to attach, enter text for the cover page, and enter a confirmation code generated by the site to prove you are a human.
To send, you choose the free or paid option at the bottom of the screen. If you're sending a free fax you can send only three pages, plus the cover page. Tap the button on the lower left page to send your free fax (up to five free faxes per day). That’s a total of 15 pages.
On the down side, you fax doesn't send instantly. You have to wait for an email with a link to your fax and then click on the link to deliver it. Waiting on the confirmation fax can take anywhere from 5 to 15 minutes.
FaxZero may suit your needs adequately if you don't mind a little branding, a limited number of pages or file types and don't mind waiting a few minutes to actually send it. If you are looking for more, then there are other sites that offer much more...for a price.