FastPDF | High-Velocity Document Infrastructure

Trusted by engineering teams at

StripeVercelLinearSupabaseResendPlanetScaleNeonRailwayClerkLiveblocksAxiomTrigger.devStripeVercelLinearSupabaseResendPlanetScaleNeonRailwayClerkLiveblocksAxiomTrigger.dev

Performance

Precision in Milliseconds.

While legacy engines struggle with complex CSS and heavy assets, FastPDF utilizes a proprietary kinetic rendering bridge to deliver industry-leading performance.

speedSUB-2S LATENCY P99

rocket_launch100K+ CONVERSIONS/MIN

8.4s

LEGACY API

4.2s

PUPPETEER

1.8s

FASTPDF

Integration

Architected for Developers.

One endpoint. Simple JSON. Works from any language in minutes.

curl -X POST https://api.fastpdf.io/v1/convert/html \
  -H "Authorization: Bearer $FASTPDF_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "html": "<h1>Hello from FastPDF</h1>"
  }' \
  --output invoice.pdf

How It Works

From API Call to PDF in Milliseconds.

Submit your HTML payload — FastPDF handles rendering, fonts, and layout. A production-ready PDF comes back instantly.

terminal

Your App

API client

memory

FastPDF

Render engine

invoice.pdf

Waiting for request…

Send HTML

POST your HTML template with dynamic data as a JSON payload.

Engine Renders

Full Chromium rendering pipeline — fonts, layout, and CSS resolved.

Get PDF

Binary PDF returned directly in the response body. Zero storage needed.

Capabilities

Everything your PDF pipeline needs.

Built for production. Every endpoint is designed for reliability at scale, with the developer ergonomics you expect from modern API infrastructure.

html

HTML to PDF

Submit raw HTML + CSS. Full Chromium rendering with @page support, custom media queries, and embedded fonts.

link

URL to PDF

Pass any public URL. We handle JavaScript execution, cookie injection, and auth header forwarding automatically.

description

Template Engine

Parameterized Handlebars templates. One API endpoint, infinite document variations driven by your data.

bolt

Async Jobs

Fire-and-forget conversion. Webhook delivery brings the signed download URL when your PDF is ready.

code

Full JS Execution

V8-powered Chromium executes your scripts before render. Use wait_for: 'networkidle0' for async content.

font_download

Custom Fonts

Full Google Fonts integration and WOFF2 uploads via the API. Pixel-perfect brand fidelity guaranteed.

Infrastructure

Elastic Scaling. Zero Limits.

Our infrastructure auto-provisions dedicated ephemeral browsers in response to your traffic peaks. No rate-limit queuing, no cold starts. Just pure throughput.

99.99%

Uptime SLA

∞

Concurrent Nodes

Live Throughput

AUTO-SCALING ACTIVE

08:0012:0016:0020:00

Security

Hardened Infrastructure.

Your documents are transient and encrypted. We never persist your data.

verified_user

SOC2 Type II

Independently audited infrastructure meeting the highest security standards for enterprise document handling.

lock

AES-256 Encryption

All data in transit is protected via military-grade encryption with TLS 1.3 as our baseline standard.

visibility_off

Data Privacy

Stateless processing means your data exists only during conversion. No logs, no caching, no persistence.

From the field

Used in production, worldwide.

“

FastPDF replaced our entire Puppeteer setup overnight. 4x faster, zero browser management overhead, and I never think about cold starts again.

Alex Mercer

Principal Engineer · Stacklane

“

SDK integration took 20 minutes. We're now generating 40,000 invoice PDFs per day with zero reliability issues. SOC2 made compliance painless.

Priya Rajan

Head of Payments · Luma Finance

“

The async job queue and webhook delivery model is exactly right for our reporting pipeline. The support SLA is actually real.

Daniel Voss

Staff Engineer · Runframe

Pricing

Transparent Scaling.

Simple consumption-based pricing. Upgrade or downgrade any time — no lock-in, no surprises.

Developer

Start for free, no card needed.

$0/month

check_circle500 Credits / month
check_circleShared Infrastructure
check_circleCommunity Support
check_circleREST API Access

Scale

For teams shipping at speed.

$99/month

check_circle25,000 Credits / month
check_circleDedicated Engine Pool
check_circlePriority Webhook Delivery
check_circle1-hour Support SLA
check_circleUsage Analytics Dashboard

Enterprise

For mission-critical workloads.

Custom

check_circleUnlimited Credits
check_circleOn-Prem / VPC Deployment
check_circleDedicated Account Manager
check_circleCustom Legal & Billing
check_circle99.99% SLA Guarantee

1 Credit = 1 PDF conversion · Credits reset monthly · Unused credits do not roll over

Get started free

Start building in minutes.

Get your API key and run your first conversion in under 5 minutes. 500 credits free every month — no credit card required.

Get API Key — Free Read the Docs

verified_userSOC2 Type II

lockTLS 1.3 + AES-256

support_agent1-hr SLA on Scale

credit_card_offNo Card Required

FAQ

Frequently Asked Questions.

Our engine supports full Google Fonts integration, custom WOFF2 uploads via our API, and complex font synthesis for high-fidelity brand reproduction. Pass a font_url array in your request body or pre-register fonts against your account.

The Infrastructure for High-Velocity PDF Conversion