PrivConvert API

File conversion for your app.
Zero data retention.

Add the same privacy-first conversion engine that powers PrivConvert to your own product. Every file is processed in memory and deleted instantly - nothing ever touches disk.

Request API access See pricing
Terminal 
# Convert a Word file to PDF - in memory, nothing stored
curl -X POST https://privconvert.com/api/convert/word-to-pdf \
  -H "Authorization: Bearer pk_live_…" \
  -F "[email protected]" \
  -o contract.pdf

Pricing

Pay only for the volume you need.

Move the slider to your monthly volume. Buy the credits outright, or subscribe at a lower rate per conversion - the same API either way.

credits
1,000 500,000

Package $271 one-time · Subscription $155/month

Package One-time payment. Credits last 2 years. $271 Buy credits Best rate Subscription Monthly credits at our lowest rate. $155/mo Subscribe Enterprise Custom volume, contracts and compliance. Custom Contact sales
Volume
Conversion credits 45,000 45,000 / month Custom
Cost per credit $0.0060 $0.0034 Custom
Credit expiry 2 years Monthly reset Custom
Payment One-time Monthly Invoice
Unused credits roll over Custom
Limits at this volume
Maximum file size 500 MB 500 MB Custom
Requests per minute 120 120 Custom
Concurrent conversions 4 4 Custom
Included with every plan
All 450+ conversion endpoints
Zero data-retention, in-memory only
Only successful conversions are charged
Signed DPA & invoicing
Support Email Email Dedicated + SLA

One credit is one successfully converted file. Need more than 500,000 a month? Let’s talk.

Referenced by

Security and industry publications point here.

LinuxSecurity logo

Cites PrivConvert’s published security assessment in its guide to sandboxing file parsers on Linux.

LinuxSecurity Guardian Digital logo

Uses the questions PrivConvert was built to answer as its vendor due-diligence framework.

Guardian Digital CyberDB logo

Cites PrivConvert for secure document handling that minimises data exposure.

CyberDB SelfCAD logo

Points readers to PrivConvert when a slicer will not accept their 3D mesh format.

SelfCAD

The assessment they cite covers 24 conversion tools with no critical or high-severity findings, and is published in full. More coverage on our press page.

1

Get your API key

Pick a plan and we issue a secret key tied to your account.

2

Send a file

POST any file to a conversion endpoint with your key in the header.

3

Get it back

The converted file streams straight back - processed in RAM, never stored.

Built for files you can’t send just anywhere.

Most conversion APIs upload, queue and store your customers’ files on disk. PrivConvert doesn’t. Every conversion runs entirely in RAM and is wiped the moment it completes - so legal, medical and finance teams can integrate without handing sensitive documents to a third party that keeps them.

  • In-memory processing, zero disk writes
  • Files deleted instantly after each conversion
  • Signed DPA available on Enterprise

Frequently Asked Questions

How is the API priced?
By the number of successful conversions you make each month. Pick any monthly volume from 1,000 up to 500,000 on the pricing slider and the price follows it. A 5,000/month subscription is $25. You are only charged for conversions that succeed.
What happens if I go over my monthly quota?
Requests beyond your quota return a 429 status until the next billing cycle or until you upgrade. Your quota resets on the first of each month. No surprise overage bills.
How does authentication work?
Every request carries your secret key in an Authorization header - “Authorization: Bearer pk_live_…”. Keys are created, rotated and revoked from your account dashboard. All API traffic is HTTPS only.
What are the rate and concurrency limits?
Each plan has a per-minute request limit and a cap on how many conversions can run in parallel, both of which follow your monthly volume (60/min up to 10,000, 120/min up to 50,000, 300/min above that). Exceeding the request rate returns 429 rate_limited; exceeding parallel jobs returns 429 concurrency_limited; a rare global overload returns 503 server_busy - all safe to retry with backoff.
What is the maximum file size?
It follows your monthly volume - 250 MB up to 10,000 conversions a month, and 500 MB above that. The docs include ready-to-use examples for uploading large files.
Can I discover tools and check usage programmatically?
Yes. GET /api/tools returns a live, machine-readable catalog of every conversion (input/output formats and parameters), and GET /api/me returns your plan, monthly quota and current usage - handy for dashboards and CI.
Is there a free tier?
No open free tier - a 1,000/month subscription starts at $8. If you want to evaluate the API before committing, contact us and we will arrange a short trial.
What about my users’ files - do you store them?
Never. Every file is processed entirely in your server’s RAM and deleted the instant the conversion finishes. Nothing is ever written to disk. This zero-retention guarantee is ideal for legal, medical and financial workloads.
Which conversions are available over the API?
Every server-side conversion on PrivConvert - images, PDF, Office documents, eBooks and archives - is available through a single, consistent REST endpoint pattern.
Do you offer no-code integrations like n8n, Zapier or Make?
The API is a standard REST endpoint, so it works with any tool that can send an authenticated HTTP request. A dedicated n8n community node is rolling out - see our n8n integration page. Others are on the roadmap.
Can I use the API in a commercial product?
Yes, on any paid plan. For a signed DPA, invoicing, an uptime SLA or a self-hosted / private deployment, talk to us about Enterprise.
How do I get started?
Click “Request API access” and tell us your expected volume. We will send your API key and the full endpoint documentation.

Integration guides

Written against the same API these docs describe.

Getting started Add conversion without storing user files Auth, endpoints, large uploads and error handling, with curl, Python and Node examples. At volume Converting thousands of files Batches of 20 for one rate-limit slot, partial failures that still return 200, and sizing a worker pool to your plan. Reliability Which errors to retry, and which never to Two different 429s that need opposite responses, and when Retry-After is a stop signal rather than a delay. Compliance What retention costs you under GDPR The questions a security review will ask about your conversion vendor, and why retention is the one that matters.