Upgrade Fax Certificate For Free

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Up to 100 MB for PDF and up to 25 MB for DOC, DOCX, RTF, PPT, PPTX, JPEG, PNG, JFIF, XLS, XLSX or TXT
Note: Integration described on this webpage may temporarily not be available.
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Upload your document in seconds
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Fill out, edit, or eSign your PDF hassle-free
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Download, export, or share your edited file instantly
Top-rated PDF software recognized for its ease of use, powerful features, and impeccable support
Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
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Regional Leader - Summer 2025
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Best Meets Requirements- Summer 2025

Every PDF tool you need to get documents
done paper-free

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Create & edit PDFs

Generate new PDFs from scratch or transform existing documents into reusable templates. Type anywhere on a PDF, rewrite original PDF content, insert images or graphics, redact sensitive details, and highlight important information using an intuitive online editor.
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Fill out & sign PDF forms

Say goodbye to error-prone manual hassles. Complete any PDF document electronically – even while on the go. Pre-fill multiple PDFs simultaneously or extract responses from completed forms with ease.
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Organize & convert PDFs

Add, remove, or rearrange pages inside your PDFs in seconds. Create new documents by merging or splitting PDFs. Instantly convert edited files to various formats when you download or export them.
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Collect data and approvals

Transform static documents into interactive fillable forms by dragging and dropping various types of fillable fields on your PDFs. Publish these forms on websites or share them via a direct link to capture data, collect signatures, and request payments.
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Export documents with ease

Share, email, print, fax, or download edited documents in just a few clicks. Quickly export and import documents from popular cloud storage services like Google Drive, Box, and Dropbox.
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Store documents safely

Store an unlimited number of documents and templates securely in the cloud and access them from any location or device. Add an extra level of protection to documents by locking them with a password, placing them in encrypted folders, or requesting user authentication.

Customer trust by the numbers

64M+
users worldwide
4.6/5
average user rating
4M
PDFs edited per month
9 min
average to create and edit a PDF
Join 64+ million people using paperless workflows to drive productivity and cut costs

Why choose our PDF solution?

Cloud-native PDF editor

Access powerful PDF tools, as well as your documents and templates, from anywhere. No installation needed.

Top-rated for ease of use

Create, edit, and fill out PDF documents faster with an intuitive UI that only takes minutes to master.

Industry-leading customer service

Enjoy peace of mind with an award-winning customer support team always within reach.

What our customers say about pdfFiller

See for yourself by reading reviews on the most popular resources:
On a learning curve,so it has been slow but I really like the ease of putting in my own form and filling in my data. Helps with creating readable Dues Notices
Sylvia M
2014-11-20
It's great! Only problem I had was trying to erase a hi-lited area I accidentally added. The software wanted me to pay for an upgrade for the eraser which I think is ridiculous guys. Other than that, awesome.
E Froerer
2016-12-23
Just needed access to a quick fillable PDF for SOAP notes when my office management software with builtin SOAP notes crashed. It is filling a need for the moment, doubtful I will continue. It seems like a nice program but the diagram on the SOAP notes is too cumbersome to mark with the given symbols on the chart as, so far, I have seen no way to actually mark the figure on the chart with the same symbols electronically. There are some symbols available, like the check, circle and line but they are not like the ones on the actual symbol chart. If there was a more expedient way to use those same symbols I might actually be very interested in using this.
Brian
2017-09-01
I am using this service as an ex-pat in Ecuador to communicate with government services in the U.S. Not certain yet if offices like Social Security will accept forms mailed from an online-filler service, so am withholding the 5th star until I know they'll actually accept my forms.
Anonymous Customer
2018-02-07
Love the service and how it integrates with Zapier - it has saved me tons of time in manual repetition for filling out intake, invoicing and legal documents and I love the send to sign feature. Would like a little more functionality in the app, like having the ability to sign docs directly instead of using mobile browser, but overall it functions beautifully. Best value for this type of service hands-down. As a small business, the price-point is phenomenal! Highly recommend PDFfiller!!
David Z
2018-09-04
Locating forms is a little… Locating forms is a little slow/complicated. Also would like to be able to save information that will be repeated on other fillable forms.
Mary Wyatt
2020-02-14
literally this app has changed my life and has made it so much easier and convienant for me always being on the go and now i dont really need to be on the go its just right here everything in one
Veronica S
2021-09-05
Super easy to learn and use. Would love to learn how to create templates for budget, expenses etc. I used pdfFiller to change bank statements from pdf to csv . Thank you
Jackie M
2021-08-15
What do you like best? That I can mark up any pdf or create 1 new document from several. Also digital signatures, I work remotely and need this! Being remote, I need to be able to create or sign a form from anywhere and I can easily with pdf filler. I love the share feature as well, I can work on my end and my co-workers will have it almost instantly without having to print, scan and email. I work remotely, almost all from my laptop with no printer. This allows me to work from my phone or tablet seamlessly as well. What do you dislike? Not much, no complaints yet. Maybe the layout? Like where everything is, I click on the documents and then you have to specify where something is. Maybe a more organized folder system? When I share them, they should all be in the share folder, but for some reason, they're not always there. I am a very organized person and like everything in its own folder or file. I'd like a way to save everything to its own file and be able to find them quickly and easily. Recommendations to others considering the product: This is a great program, especially if you work remotely, highly recommend it! What problems are you solving with the product? What benefits have you realized? 1099 tax reports, our software only supports e-file and we are so small that we don't have that. I also love the share part, I'm able to work on my end, share it with my co-workers and they can have it almost instantly without printing and scanning, etc. I also love that I can take a few different documents and combine them to one, that is a great feature!
Cynthia Vermilyea
2021-02-11

Upgrade Fax Certificate Feature

Introducing the Upgrade Fax Certificate feature, designed to streamline your faxing experience. This feature enhances your ability to send and receive secure faxes, adding a reliable layer of verification to your documents.

Key Features

Enhanced security for fax documents
Quick and easy authentication process
Real-time confirmation of sent faxes
User-friendly interface for managing certificates
Seamless integration with existing fax systems

Potential Use Cases and Benefits

Ideal for legal, financial, and healthcare sectors requiring secure faxing
Reduces the risk of fax fraud and unauthorized access
Ensures compliance with industry regulations and standards
Improves workflow efficiency by providing immediate verification
Saves time and effort when managing sensitive documents

This feature addresses common challenges related to fax security. By upgrading your fax certificate, you gain peace of mind knowing that your documents reach their intended recipients safely and securely. Strengthen your faxing process today and enjoy the benefits of upgraded protection and reliability.

Get documents done
from anywhere

Create, edit, and share PDFs even on the go. The pdfFiller app equips you with every tool you need to manage documents on your mobile device. Try it now on iOS or Android!

For pdfFiller’s FAQs

Below is a list of the most common customer questions. If you can’t find an answer to your question, please don’t hesitate to reach out to us.
What if I have more questions?
Contact Support
Can You Fax Over VoIP? Technically speaking, yes, a business can send and receive faxes over a VoIP network. But the more you know about VoIP, the less confident you will be entrusting it with your company's important fax transmissions, especially if you are doing a high volume of faxing.
If you want to continue using your old fax machine, and you want to connect it to your VoIP phone system, it's best to use a VoIP Gateway and an ATA (Analog Telephony Adapter) that supports T38. T38 is a protocol designed to allow fax to travel over a VoIP network.
Can You Fax Over VoIP? Technically speaking, yes, a business can send and receive faxes over a VoIP network. But the more you know about VoIP, the less confident you will be entrusting it with your company's important fax transmissions, especially if you are doing a high volume of faxing.
So VoIP transmissions for fax work by digitizing your voice and transmitting this information via packets, which are then reassembled and converted back into analogue sound. However, fax transmissions are sensitive to packet delays and loss. So not all the fax packets are able to be reassembled.
G711 or a Non-Compressed Codec. Make sure that your VoIP fax connection (the line you use for faxing) is set to G711, which is a non-compressed codec. Slow the transmission speeds on the fax machine settings. Both the TX and Rx settings. Disable ECM (Error Correction Mode).
Yes, you can send and receive occasional faxes on your Voyage voice line. Simply connect your phone line to your fax machine. However, voice lines are not optimized for fax service so, for frequent faxing, a dedicated fax line is highly recommended.
Comcast's Xfinity voice service does not use traditional phone lines as it is delivered via fiber optic cable Voice over Internet Protocol (VoIP) technology. Xfinity voice customers can use regular fax machines with their Comcast phone service.
Plug a phone cord into your XFINITY Internet/Voice modem. Connect the other end of the cord to the telephone port labeled “IN” or “LINE IN” on your fax machine. You can now send faxes using XFINITY Voice and your fax machine.

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Users Most Likely To Recommend - Summer 2025
Grid Leader in Small-Business - Summer 2025
High Performer - Summer 2025
Regional Leader - Summer 2025
Easiest To Do Business With - Summer 2025
Best Meets Requirements- Summer 2025