What file types are best for faxing?

PDF is the most reliable; DOCX, JPG, and PNG are commonly supported. Export to PDF for consistent rendering and fewer retries.

Can I fax multiple PDFs at once?

Combine pages into a single PDF when possible. Sending one multi‑page PDF reduces retries and keeps confirmations in one job.

How big can my PDF be?

Keep files under your plan’s limit; 20–25 MB is typical. Compress or export in black & white to reduce size.

Do I get a transmission confirmation?

Yes. mFax.to shows real‑time status and emails a delivery receipt after success or a reason if the fax fails.

Can I receive faxes as PDFs?

Yes. Get a virtual fax number in mFax.to and receive inbound faxes in your inbox and dashboard.

Is it safe to fax medical records?

Only if the service is HIPAA-compliant. mFax.to uses end-to-end encryption, making it safer than traditional paper faxes which often sit unattended in shared office trays.

What if the line is busy?

mFax.to automatically retries busy numbers up to 3 times, saving you from having to stand over a machine redialing manually.

How to Fax a PDF Document

Learn three simple ways to fax a PDF online, by email, and from your phone with pro tips for clean delivery and how mFax.to makes it fast and reliable.

Frequently Asked Questions

What file types are best for faxing?: PDF is the most reliable; DOCX, JPG, and PNG are commonly supported. Export to PDF for consistent rendering and fewer retries.
Can I fax multiple PDFs at once?: Combine pages into a single PDF when possible. Sending one multi‑page PDF reduces retries and keeps confirmations in one job.
How big can my PDF be?: Keep files under your plan’s limit; 20–25 MB is typical. Compress or export in black & white to reduce size.
Do I get a transmission confirmation?: Yes. mFax.to shows real‑time status and emails a delivery receipt after success or a reason if the fax fails.
Can I receive faxes as PDFs?: Yes. Get a virtual fax number in mFax.to and receive inbound faxes in your inbox and dashboard.
Is it safe to fax medical records?: Only if the service is HIPAA-compliant. mFax.to uses end-to-end encryption, making it safer than traditional paper faxes which often sit unattended in shared office trays.
What if the line is busy?: mFax.to automatically retries busy numbers up to 3 times, saving you from having to stand over a machine redialing manually.