VPS plan
ZAP Spark
€7.29/ 30 days
- 4 GB RAM
- 2 CPU
- 60 GB NVMe
- 1 Gbit/s Uplink
Self-hosted PDF toolkit · One-Click AppStirling PDF VPS hosting.
Deploy Stirling PDF in one click via Coolify, keep documents on your own server, with root access and DDoS protection included.
4.4Trustpilot
19,543+ Reviews
Packages 1–3 of 9
Stirling PDFConfigure yourself
Your project. Your setup.
No package fits? Choose your CPU, RAM and storage—you only pay for what your project actually needs.
Powerful CPUs
100 Gbit/s host network
Juniper Firewall
DDoS protection
Payment types
Visa
Mastercard
American Express
PayPal
Google Pay
Apple Pay
Klarna
Amazon Pay
What is Stirling PDF?
Stirling PDF: your private PDF toolkit on your own VPS
Stirling PDF turns your browser into a complete PDF workbench: merge contract packs, split scanned batches, run OCR on paper archives, redact sensitive lines, convert files to PDF/A and add signatures, all without uploading a single page to a third-party website. Hosted on your own VPS, it becomes a self-hosted PDF editor your whole team opens through one link, while every document stays on infrastructure you control.
Instead of a manual Stirling PDF Docker setup, you pick the app in the One-Click App marketplace and Coolify deploys the container for you. Full root access keeps every option of a hand-built stack open: connect a custom domain with HTTPS, enable user logins, add OCR languages or run Paperless-ngx right next to it, so your PDF workflow grows with your team instead of hitting the limits of a SaaS tool.
Features
Everything your PDF workflow needs, self-hosted
OCR for scanned paperwork, conversions to PDF/A and saved pipelines for recurring jobs, all inside one Stirling PDF instance on your VPS.
Reusable PDF pipelines
Recurring jobs like OCR plus compression run as one saved pipeline, file after file.
OCR for scanned paperwork
Scanned contracts and letters become searchable, copyable text without leaving your server.
Convert to and from PDF
Office files and images turn into clean PDFs or archive-ready PDF/A on demand.
One-click Coolify deploy
Stirling PDF is up shortly after checkout, with no docker-compose file to write.
Sign PDFs in the browser
Contracts are signed with a drawn signature or a certificate, and the files never leave your VPS.
Login and access control
Only your team reaches the toolkit, protected by user logins, API keys and firewall rules.
Locations in Europe and America
Your server. Your location.
4 data centers in Europe and America — choose the location closest to your users.
Europe
FFM/Eygelshoven
America
Dallas
Los Angeles
Ashburn
Inside Stirling PDF
What you can do with Stirling PDF
More than 50 PDF tools in one browser tab: merge, split, annotate and edit text, then export exactly the format you need, processed on your own server.
Open-source PDF toolkitBuilt for teamsPrivacy-firstBatch-ready
Stirling PDF
Upload
Stirling PDF
Drag-and-drop upload
Drop one PDF or a whole stack onto the upload panel and Stirling PDF takes it from there. A progress bar shows each upload, so even large scans are clearly on their way to your server before you pick a tool.
Drag and drop multiple PDFsLive upload progressClick-to-browse file pickerFiles stay on your VPS
Get started now
Stirling PDF on your VPS in minutes — no complicated setup.
Instant setupCancel anytime1-click deploy
Host Stirling PDF on a VPSBackups & snapshots
Your VPS stays restorable.
Snapshots let you roll back quickly. ZapX Pass unlocks Restore, manual Backups, and longer retention for daily Backups.
Backups with ZapX Pass
SECUREDZapX Pass
- Manual Backups
- Keep daily Backups longer
Snapshots for quick rollback
RECORDEDZapX Pass
- Snapshot before deployment
- Jump back immediately
- Snapshot with RAM
More control with ZapX Passextra storage, restore, Pass perks, and Lifetime VPS without activity checks
Reviews
What customers say about ZAP-Hosting
Real feedback on support and setup.
4.4
19,543+ Reviews on Trustpilot
FAQ
Frequently asked questions about Stirling PDF
Answers to the most important questions before you start.
Yes. Order a VPS, open the One-Click App marketplace in your dashboard and choose Stirling PDF. Coolify pulls the Stirling PDF container image and starts the web interface for you, so you skip writing a docker-compose file by hand. Once the deploy finishes, you find the access URL directly in Coolify. Learn more in the Help Center
Stirling PDF runs on Java, so RAM matters more than raw disk space. Light editing, merging and conversion for one or two people runs comfortably on an entry plan, while OCR-heavy batches, large scans or a whole team benefit from more vCPU and RAM. Plans scale by RAM, vCPU and storage, run on flexible terms, and you can cancel anytime.
- Light edits, merges and conversions: entry plan
- OCR batches and large scans: more vCPU and RAM
- Team use plus other apps: mid or upper plan
Yes, and keeping documents private is the main reason to self-host it. Stirling PDF processes files on your VPS instead of a public upload service, so contracts, payslips or medical scans never pass through a third-party PDF website. The core of Stirling PDF is open source, and you decide who can log in, where the server is located and how long files stay on disk.
Yes. Point your domain to the VPS and enter it in Coolify, which handles the reverse proxy and a TLS certificate for HTTPS. Stirling PDF also ships an optional login with user accounts, and with root access you can add firewall rules or place an SSO proxy in front of it if your team needs one.
Yes. Coolify manages several apps on the same VPS, so Stirling PDF can run next to tools such as Paperless-ngx for archiving or Nextcloud for file storage. Plan enough RAM for every app you add, because OCR jobs and the other services share the same resources.
Yes. Every VPS includes full root and SSH access. The one-click path covers most setups, but you can still run your own Stirling PDF Docker Compose file, pin a specific image version, add OCR language packs or tune environment variables whenever you want full control. How to connect via SSH
You decide when to update: redeploy the latest Stirling PDF image in Coolify or pull a pinned version via Docker. Before bigger changes, create a Backup in your dashboard so you can roll back if needed. Manual Backups and restores for your VPS are available with ZapX Pass. Read the Backup guide
ZAP-Hosting offers VPS locations in Europe and America, so pick the one closest to the people who open Stirling PDF every day. Teams in North America, for example, often start with Ashburn, Dallas or Los Angeles. Your documents are processed and stored in the data center you selected.
Any more questions?
Contact SupportZAPX Dashboard
Your VPS dashboard at a glance
Statistics, console and DDoS protection for the VPS behind your Stirling PDF instance, all in one panel.
zapx.zap-hosting.com/vserver
VPS DDoS Manager tab
VPS DDoS Manager tab
ZapX AI Agent
Get help with your Stirling PDF server in plain language
Ask why OCR is slow, how to connect your domain or how to update safely. The ZapX AI Agent explains and suggests next steps that you confirm yourself.
OCR performanceDomain & HTTPSSafe updatesPlan sizing
The ZapX AI Agent is part of ZapX Pass, together with VPS Backups, restores and Lifetime server slots.
Explore ZapX PassZapX AI Agent
panel.zap-hosting.com
Why is OCR on my Stirling PDF so slow?
Large scans are CPU- and RAM-intensive. Check the live load in your dashboard while a job runs: if memory sits at its limit, split the batch into smaller jobs or consider a plan with more RAM.
How do I see if RAM is the bottleneck?
Open the statistics view of your VPS during an OCR job. If memory stays near its limit while CPU still has headroom, RAM is the bottleneck. Compare both before you change anything.
Performance
Measured VPS performance for PDF jobs
The numbers below show the CPU and RAM headroom you get for OCR batches and conversions, so one large scan job doesn't slow the toolkit down for everyone else.
Top-tier Performance
High-performance VPS, CPU model depends on the location
ZAP-HostingPowerful server CPUs
Market averageHardware varies
Typical VPS plans without a published host CPU
confirmed 2026-07-01
Standard CPUPowerful server CPUs, model depends on the location
StorageEnterprise NVMe U.3, Ceph
Support24/7 AI + escalation
Use cases
Who runs Stirling PDF on their own VPS
From law offices to accounting teams: real scenarios where a private, self-hosted PDF toolkit beats uploading files to a public website.
Ready to deploy?
Your private PDF toolkit in one click
Instant setupCancel anytime1-click deploy
Host Stirling PDF on a VPSZapX appComing soon
Keep an eye on Stirling PDF from your phone
Check your VPS status, restart it after maintenance and watch resource usage during big OCR jobs, right from the ZapX mobile app.
Live CPU and RAM usage during OCR batches
Restart or stop your VPS in seconds
Server status and IP details at a glance
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Run Stirling PDF on your own VPS
Deploy in one click via Coolify, keep every document on your own server and scale RAM and vCPU as your PDF workload grows. Cancel anytime.
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