What do you like best?
We use PDFfiller primarily for tracking and completing registration forms for the advanced trainings we provide to mental health professionals across the country. Manually managing these forms was a nightmare as our business started to grow. Once we started using PDFfiller, it began incredibly easy and hassle free to monitor who was registered for which trainings and when. the integrated PayPal and Stripe systems make it super easy to allow customers to pay registration fees immediately and we are notified as soon as that happens. Also, PDFfiller offers a digital fax line. In today's day and age, we are completely wireless and adding a hardwired fax line would have been such a pain. For 10 bucks we are able to digitally send and receive faxes which is very helpful when dealing with physicians and other medical providers.
What do you dislike?
We have only had one real issue with PDFfiller. At some point a few months ago, we had some issues with the PayPal/Stripe payment integration. We were unable to send receipts to our customer which was rather frustrating for us and them because of the amount of money people spend to some to our trainings. I reached out to someone at PDFfiller and a manager responded the next business day and said they would get in touch with the team who handles that part to get it fixed. Though I did not hear back, within a week or so the problem was fixed.
Recommendations to others considering the product:
Do it. It is well worth the price for what you are getting.
What problems are you solving with the product? What benefits have you realized?
Sending and receiving faxes through this program is a lifesaver. I am able to access them anywhere at any time whether I am in the office or out of town. It's also a great organizational tool for tracking out "link to fill" forms.

What do you like best? Editing, merging and marking-up PDF documents and particularly drawings (I am an architect) is easy to do on the program. Editing, deleting selected pages and merging are the most common features that I use, and this is easily done on pdfFiller. It would be helpful if the program has better ways to draw lines and circles, etc., as these are basic needs when marking-up drawings. These features need to be improved. What do you dislike? Drawing features are not user friendly and need to be improved. Highlighting, which is available on pdfFiller, can only be done in straight lines and not at an angle or in curved shapes. This needs to be improved. What problems is the product solving and how is that benefiting you? Editing and merging PDF documents, marking-up PDF drawings. These are my most critical needs for document review and pdfFiller allows me to do all of this easily.

What do you like best? Very user friendly and stores files on the site. What do you dislike? Not much I can say poorly about this product What problems are you solving with the product? What benefits have you realized? Editing pdfs for sales quotes, etc.