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⚡ Quick Start

Choose the setup that fits your workflow. Both options take only a few steps.

.NET 9 (fastest way)

If you already have .NET installed, this is the quickest way to get started.

1. Download the self-host package
2. Extract the archive
3. Run:

dotnet Documentize.SelfHost.dll

Then open http://localhost in your browser.

Docker

Prefer containers? Use the included Dockerfile to run Documentize anywhere.

1. Download the Docker package
2. Build the image:

docker build -t documentize .

Run the container:

docker run -p 80:80 documentize

Then open http://localhost.

🧩 Requirements

Minimal requirements depending on your setup:

• .NET 9 Runtime for direct execution
• Docker for containerized setup

⚙️ More Details

The self-host version is built as a standard ASP.NET Core application, so it behaves exactly like any modern .NET web API.

• Runs locally or on any server
• Default Docker port: 80
• No external services required
• Suitable for internal tools or production use

🔑 Licensing & Subscription

Without a license the API runs in Trial Mode — output files may contain evaluation watermarks. Apply a license to enable full, watermark-free processing.

Free vs. paid tier

Every request — with a key or without one — runs under one of two allowances. A paid subscription is what lifts both the daily quota and, if the key is an active paid subscription, the Aspose watermark.

A paid subscription is proven to the instance by a signed key — either fetched automatically for you (Option 3) or issued manually (Option 4) — never by an environment variable you set yourself: those numbers are compiled into the binary and cannot be raised any other way.

Option 1 — Environment variable

Base64-encode your .lic file and pass it as an environment variable before starting:

# Linux / macOS
export ASPOSE_PDF_LICENSE=$(base64 -w 0 Aspose.Pdf.lic)
dotnet Documentize.SelfHost.dll

# Docker
docker run -p 80:80 \
  -e ASPOSE_PDF_LICENSE=$(base64 -w 0 Aspose.Pdf.lic) \
  documentize

Option 2 — Upload via API

POST the .lic file to your running instance at any time.

curl -X POST http://localhost/webapi/license \
  -F "license=@Aspose.Pdf.lic"

Check the current license status at any time:

GET http://localhost/webapi/license
# { "licensed": true }

Option 3 — Activate with your Documentize account (recommended)

If you already have a Documentize account with an active subscription, you don't need an Aspose .lic file at all. Create a SelfHost activation key below (requires signing in), then set it as an environment variable on your instance. The instance uses the key to call the Documentize API roughly every 6 hours and fetch a short-lived signed entitlement — whatever plan is active on your account is reflected automatically, with no further action from you when you upgrade, downgrade, or renew.

# Linux / macOS / Docker
export DOCUMENTIZE_API_TOKEN=dmk_your_activation_key

This API token is not the same as the "Copy API token" button in the sidebar — that one is a short-lived login token for the hosted Documentize web app. The activation key created below is a separate, long-lived, single-purpose credential: it can only be used to refresh a SelfHost instance's entitlement, and it can be revoked here at any time, which stops the next refresh from renewing that instance — the instance simply keeps running on its last-known entitlement until that grant's own short expiry, then falls back to the free tier.

Independent of Options 1, 2 and 4 — use whichever fits your deployment; an instance is free to run more than one method side by side (a per-request key always wins if you send one — see below).

Option 4 — Manually issue a subscription key (advanced)

Options 1–3 are for the plans sold through the Documentize website. If you are distributing your own long-lived (monthly, yearly, or perpetual) subscription keys — for example as a vendor bundling SelfHost for your own customers — the Documentize.SelfHost binary can mint them itself, offline, from the command line. Neither command touches the network or starts the web server.

First, generate a signing key pair once (keep the private half secret):

dotnet Documentize.SelfHost.dll --new-signing-key
# PUBLIC  (ship this — DOCUMENTIZE_SUBSCRIPTION_PUBLIC_KEY):
# MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA...
#
# PRIVATE (keep secret — needed only to issue keys):
# MIIEvQIBADANBgkqhkiG9w0BAQEFAASCBKcwggSjAgEA...

Set the public half as DOCUMENTIZE_SUBSCRIPTION_PUBLIC_KEY on every instance that should trust keys you issue (a Release build can also have it baked in at compile time). Then issue a key for a customer:

dotnet Documentize.SelfHost.dll --issue-key "<privateKeyBase64>" \
  '{"sub":"customer-123","email":"buyer@example.com","plan":"Pro Yearly","tier":"paid","period":"year","exp":1798761600}'
# DMZ1.eyJzdWIiOiJjdXN0b21lci0xMjMiLCJ0aWVyIjoicGFpZCIsLi4ufQ.MEUCIQD...

Give the printed DMZ1.… value to the customer to set as:

# Linux / macOS / Docker
export DOCUMENTIZE_KEY=DMZ1.eyJzdWIiOiJjdXN0b21lci0xMjMiLC4uLn0.MEUCIQD...
# or, for a docker secret / k8s mount:
export DOCUMENTIZE_KEY_FILE=/run/secrets/documentize_key

Payload fields: sub/email/plan are freeform, shown back on /webapi/usage. tier is "free" or "paid". period is "month", "year", or "perpetual". exp is a Unix timestamp (seconds) the key stops working at — omit it (or set 0) for a perpetual key that never expires. You can optionally cap dailyOps, maxFileMb, or maxConcurrent per key for a bespoke plan; leave them out to use the standard paid-tier numbers above.

This key never expires from your side and never phones home — the instance verifies it completely offline, forever, unless you also set DOCUMENTIZE_KEY_REFRESH_URL to let it check for revocation periodically. This is the right tool for a key you are selling or handing out yourself; Option 3 above is the right tool for a customer with a Documentize account who just wants their own subscription reflected automatically.

Presenting a key on a single request

Whichever option you use, a DOCUMENTIZE_KEY/DOCUMENTIZE_API_TOKEN set on the instance is the default for every request. You can also override it per request, e.g. to test a different key without restarting the instance — any one of these three works, and a per-request key always wins over whatever the instance is configured with:

# Dedicated header
curl http://localhost/webapi/usage -H "X-Documentize-Key: DMZ1...."

# Standard bearer auth (what Swagger UI's Authorize button sends)
curl http://localhost/webapi/usage -H "Authorization: Bearer DMZ1...."

# Query string, for clients that can't set headers
curl "http://localhost/webapi/usage?key=DMZ1...."

Checking your current status

Free, no key required:

GET http://localhost/limits        # human-readable
GET http://localhost/limits.json   # machine-readable
GET http://localhost/webapi/usage  # your own tier, plan, usage today, and licensing status

/webapi/usage reports the same tier/plan a browser sees on the Documentize account page (email, plan name, days left in a term key), plus licensed/licensing fields explaining exactly why the Aspose watermark is or isn't applied right now — the first place to check if paid processing doesn't look the way you expect.

🖥️ Using the desktop & terminal clients with your local instance

The Windows, Linux, and TUI clients normally talk to the hosted Documentize API. You can point them at this self-host instance instead, so files are processed on your own machine and never leave your network.

Let the Windows client run the engine for you

The Windows client has a built-in copy of this engine — you don't need .NET or Docker installed separately.

1. Open Settings → Run Documentize on this computer.
2. Click Install — the client downloads Documentize.SelfHost to %APPDATA%\PDFCON\self-host and starts it on a local loopback port.
3. Click Use locally to route all operations to it.

When you are signed in with a paid subscription, the client fetches a signed entitlement for the local engine automatically (the same mechanism as Option 3 above), so full limits and watermark-free output work with no extra setup.

Point any client at an instance you started yourself

If you run this engine directly (dotnet Documentize.SelfHost.dll or the Docker image), connect any client to it with a provider profile:

1. Start the instance and note its URL — http://localhost for the default dotnet run, or the port you mapped for Docker.
2. In the client, open Settings and add/edit a provider profile:
   • Kind: Documentize REST
   • Base URL: http://localhost/webapi/ (keep the trailing /webapi/)
   • API Key (optional): empty for the free tier, or a SelfHost activation key / DMZ1.… key to send per request.
3. Select that profile as the active one and save.

Licensing the instance itself is done with any of Options 1–4 above; the client's API Key field is only for presenting a key on a single client's requests.