PromptFax
Sends a single fax from uploaded PDF, JPG or PNG pages to a chosen number, billed per page only after delivery.
not read yet
Use
- For
- people who need to send a single one-off fax without an account or subscription, and AI agents
- Price
- From $2 oncepricing page, read 2026-10-14 ↗
- Activity
- Actively maintainedsite updated 7 weeks ago
- Company
- Cogint Labs LLC · Domain since 2026privacy policy · domain registered
- send a single fax to a US number without signing up
- upload PDFs or images and arrange pages before sending
- get a delivery report as proof of transmission
- Domain since2026domain registered
- Run byCogint Labs LLCprivacy policy ↗
- Privacy policy updated2026-05-01privacy policy ↗
These are PromptFax's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.
- MCP serverapp.promptfax/promptfaxverified in the MCP registry
- Stateanswers, 8 toolschecked 2026-10-14
- Address to connectpromptfax.app/mcp
- MCP docspromptfax.app/mcp-setupthe vendor's page ↗
Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.
Figure and bar: visits/mo, estimate · year: online since
- #1
Cleanor Research LabsMCP · open
Converts, compresses and trims images, PDFs and audio in the browser, with files processed on the user's device rather than uploaded.
129kActiveFrom $4.17/mo - #2
PostalFormMCP · open
Uploads a PDF or typed letter, prints it, and mails it through USPS, with optional certified tracking and return receipts.
23.6kActiveFrom $3 once - #3
SumifyPDF
Converts and processes PDFs, images, documents, and media files locally in your browser without uploading.
301ActiveFree - #4
ToolifyPDF
Merges, splits, compresses, converts, and edits PDFs and images in a browser without installation.
76Active— - #5
Doclyn
Compresses, converts, and edits PDFs and images in your browser without uploading files.
58Active— - #6
auctoryai.com
Processes images, PDFs, spreadsheets, audio, video, and 3D files entirely in your browser without uploading.
7Active—
What is PromptFax?
Sends a single fax from uploaded PDF, JPG or PNG pages to a chosen number, billed per page only after delivery. It is listed in the Atlas under Documents and made by Cogint Labs LLC.
Who is PromptFax for?
people who need to send a single one-off fax without an account or subscription, and AI agents
How much does PromptFax cost?
Paid plans start at $2 once, per PromptFax's pricing page on 2026-10-14.
Is PromptFax free?
No. Its pricing page showed no free plan on 2026-10-14.
Do people use PromptFax?
Little sign of use.
Is PromptFax still maintained?
Actively maintained: site updated 7 weeks ago.
Who owns PromptFax?
PromptFax is run by Cogint Labs LLC, per its privacy policy (2026-10-14).
What are alternatives to PromptFax?
In Documents, by use: Cleanor Research Labs, PostalForm, SumifyPDF, ToolifyPDF, Doclyn, auctoryai.com.
Not quite it? Describe the job
betaFive tools from the Atlas that fit it, each judged against what you wrote.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.