Is there a file size limit?

Only what your tier's memory allows. Standard handles routine office documents; choose Power for large scans and heavy OCR batches.

Are uploaded files kept?

Files are processed in place on your instance and are yours to keep or delete. Nothing is sent to any external service.

Why does this need the Standard tier?

Stirling-PDF is a Java application with real memory appetite, and OCR is CPU-hungry. It runs properly on 2 GB. We would rather set the floor honestly than sell you a tier that struggles.

Documents

Managed Stirling PDF hosting

Every PDF tool your office needs, without uploading files to a stranger

Live in minutes
Daily backups, one-click restore
SFTP access, no lock-in
from $2.30/mo

Deploy Stirling PDFStart free with $5 credit · no card needed

Stirling PDFWhat you're getting

Stirling-PDF is a complete PDF workbench in your browser: merge, split, rotate, compress, convert, watermark, sign, redact and OCR: fifty-plus tools in one app.

Every business handles PDFs it should not paste into a random "free converter" website: contracts, IDs, financials. On CoreHost, Stirling-PDF runs on your own instance in your region, so sensitive documents never leave infrastructure you control.

Replaces Adobe Acrobat / free PDF-converter websites: Acrobat Standard ~US$14.99/mo, or uploading client files to strangers.

On CoreHost

Fifty-plus PDF tools including OCR and redaction
Documents processed on your instance, never a third-party site
No file-size or files-per-day metering
Optional login so only your team can use it

In the browserSee it running

Screenshot published by the Stirling PDF project.

Included with every appStandard, not add-ons

Daily backups, one-click restore

Every instance is backed up daily. Restore any snapshot yourself from the panel. No support ticket, no fee.

SFTP file access

Direct SFTP access to your app's data folders. Your files are never locked away from you.

Custom domain + auto TLS

Bring your own domain with a CNAME and a TXT verification record. Certificates are issued and renewed automatically.

AI + human support

A 24/7 AI engineer that can actually inspect and fix your app, with a human escalation path. App-level help included.

DeployPick a size and a region

1. Plan (Stirling PDF needs Standard or larger to run well)

Prices exclude GST/VAT where applicable. Billed monthly, cancel any time.

Too small for this app

Lite

$1.50/mo

1 vCPU
1 GB RAM
5 GB NVMe

Lightweight tools: bookmarks, feeds, uptime checks, password vaults.

Standard

$2.30/mo

1 vCPU
2 GB RAM
10 GB NVMe

The right fit for most apps: automation, wikis, databases.

Power

$3.90/mo

2 vCPU
4 GB RAM
20 GB NVMe

Busy teams and heavier workloads with room to breathe.

Scale

$6.30/mo

3 vCPU
8 GB RAM
40 GB NVMe

The most demanding apps in the catalog, at full stride.

Extra storage+25 GB NVMe per block, stackable on any tier

+$0.00/mo

2. Region

…

Australia

Sydney

…

United States

Phoenix

…

Poland

Warsaw

Stirling PDF · Standard · Australia $2.30/mo

Deploy now

You will be asked to sign in (or create a free account) before your app provisions. Your $5 starting credit covers the first stretch; we only ask for a card when it runs low.

QuestionsAbout hosted Stirling PDF

Platform-wide questions (domains, backups, email, updates) live on the main FAQ.