reamus.

PDF API for developers

HTML goes in.
Paper comes out.

Reamus turns your HTML into crisp, print-ready PDFs with one POST request — invoices, reports, receipts. No headless browser to babysit, no PDF library archaeology.

Start free — 100 PDFs/mo See how it works

✓ 100 free PDFs every month — every feature, no card, not a trial

curl -X POST https://api.reamus.dev/v1/pdf \ -H "Authorization: Bearer rm_live_…" \ -d '{"html": "<h1>Invoice #0042</h1>"}' \ --output invoice.pdf
Reamus No.1
Invoice #0042
Design retainer — June$1,400.00
Print API, Starter plan$29.00
Rush delivery$0.00
Total due$1,429.00
POST /v1/pdf → 200 · 0.9s

From markup to paper in three moves

01

POST your HTML

Send raw HTML or a public URL, plus any page setup you need — size, margins, orientation, headers and footers.

02

A real browser sets the page

Chromium renders exactly what your CSS says. Flexbox, grid, custom fonts, and page breaks all behave.

03

The PDF comes back

Bytes by default, usually in about a second. Or pass store: true and get a one-hour share link instead.

Everything around the render, handled

Page setup that listens

A4 to Ledger, custom margins, landscape, and header/footer templates with page numbers.

A key per environment

Create a named key per environment, revoke it in one click, and see which key made every request.

A console that keeps count

Live quota meter, a 30-day render chart, and a log of your recent requests with timing and size.

Rendering behind a fence

30-second timeouts, private-network blocking, and capped concurrency. Your renders can't wander.

Start free. Upgrade when the invoices pile up.

The free plan is the product.
  • 100 PDFs, renewed every month
  • Every feature included
  • No card required

Free

$0

100 PDFs / month

Renews monthly — not a trial

Every feature, no card. Enough to wire Reamus into your app and ship it.

1 API key

Start free

Starter

$29 /mo

2,500 PDFs / month

For apps in production — invoices and reports going out every day.

5 API keys

Choose Starter

Pro

$79 /mo

15,000 PDFs / month

For serious volume, with the highest rate limits and priority rendering.

15 API keys

Choose Pro

Reamus cares

Every ream owes the forest.

We named this company after a stack of paper, so we keep a standing line on our own books: 1% of all Reamus revenue — every plan, every month — goes to climate initiatives funding carbon removal and reforestation.

Deducted when your invoice is paid, not pledged at year-end.

Our books JUL 2026
Starter plan, one month$29.00
To climate initiatives1%-$0.29
Kept by Reamus$28.71

One Starter invoice. The mint line never gets skipped.

Press your first PDF before your coffee cools.

Sign up, copy one curl command, and watch a document come off the press. The first hundred every month are on us.

Start free — 100 PDFs/mo