Online fax comparison: which service fits you?
Whether it is one fax to cancel a contract or an ongoing setup with its own fax number, the services differ mainly in four things: do you need an account, is there a free offer, how is it billed, and can you receive faxes too?
Note: we run pdftofax.com and appear in this table ourselves. This is not an independent publication. Every claim about another service comes from that service’s own pages, with the check date in its row.
The services at a glance
| Service | Account needed? | Free offer | Price | Receive faxes |
|---|---|---|---|---|
| pdftofax.com | No | First fax free, under stated conditions (see the free fax page) | From €1.00 per fax, no subscription; you pay only if it is delivered | No — send only |
| PDF24 Fax Checked 2026-10-06 | Yes — including the FREE plan (its button reads “Anmelden”) | FREE plan: 5 outgoing pages per month; excludes faxes to high-cost destinations and service numbers | FREE at no charge; SMALL €5 per month; LARGE €11.31 per month (€9.50 excl. VAT) — “after the beta test phase” | Only on the paid plans (SMALL, LARGE) |
| Fax.Plus Checked 2026-10-06 | Yes — the page points to account sign-up | Free plan: “10 free pages to fax in total” | Basic $6.99 per month ($83.99 billed annually) | Not on the Free plan; from Basic |
Selection: services Google names for “online fax” and whose claims we could check on their own pages. The list is not exhaustive; more comparisons are linked below.
Which service for whom?
One fax, no account
If you only need to send one document and do not want to register anywhere, a service without an account is the shortest route. pdftofax.com needs no registration or subscription; you see the price before paying and pay only on delivery.
Sending regularly and receiving too
If you need your own fax number or must receive faxes, a service with plans suits you better, such as PDF24 Fax (SMALL, LARGE) or Fax.Plus (from Basic). pdftofax.com can only send.
Occasional, signing up is fine
If an account does not bother you and you send small amounts, PDF24 Fax (5 pages a month) and Fax.Plus (10 pages in total) offer free allowances — with the limits shown above.
What to look at for data protection
Faxes often carry sensitive data. Whichever provider you choose, check these points:
- Where are your documents processed and stored, and which providers are involved?
- How long are documents kept, and does the privacy policy say so?
- What personal data does the service ask for — account, address, payment details?
- Is the connection encrypted? The fax leg itself runs over the telephone network and is unencrypted for every fax service.
At pdftofax.com: processing under the GDPR, transaction records on EU infrastructure; where a provider transfers data outside the EU, standard contractual clauses cover it. Details are in the Privacy Policy. Privacy Policy
Sources and check date
Other services’ prices and offers change. The provider’s own page is always authoritative; our statements refer to the check date shown. The PDF24 figures come from the plan overview and FAQ on fax.pdf24.org/de.
Send a single fax
Upload a document, see the price, send — no account. Your first fax may be free, under the conditions stated there.
Send a fax now