MaiPDF
PDF Protection Routes

Choose Online Sharing or App DRM.

Online Sharing protects the link: readers open a browser page or QR code with limits, expiry, watermarking, and records. App DRM protects the file: the PDF becomes an encrypted .maipdf package that opens only in the MaiPDF app.

Start Online Sharing Get App DRM
Online Sharing

Best for fast browser links, QR codes, expiry, open limits, and access records.

App DRM

Best when the recipient needs a protected file package instead of a normal link.

Disable later

Revoke means disabling access after delivery, not re-enabling it.

Rule setup MaiPDF
MaiPDF PDF security settings
Stronger option · App DRM

Use App DRM when the file itself must stay protected.

Online Sharing protects the link. App DRM protects the file by packaging the PDF as an encrypted .maipdf that only opens inside MaiPDF, on the devices you allow.

Encrypted .maipdf

The PDF is locked into a protected package, not a plain copy.

Device Binding

Tie access to specific devices; a forwarded file won't open elsewhere.

Anti-Screenshot

The OS marks the window as protected, so a screenshot or screen recording comes back black. Untrusted virtual-machine or policy-bypassing environments should be blocked instead of trusted.

Revoke Anytime

Revoke means disabling access after delivery, even for files already sent.

Watermark Tracing

Every page carries a traceable mark back to the viewer.

Cross-Platform

Windows, macOS, iPhone, and Android.

Get the MaiPDF app App Store
Workflow

Start with Online Sharing when a link is enough.

This route keeps the PDF in a controlled browser viewer. It is easier for readers because there is no app install.

flowchart LR
  A["Upload PDF"] --> B["Set limits"]
  B --> C["Add expiry or watermark"]
  C --> D["Send link or QR"]
  D --> E["Track or revoke"]
1

Upload PDF

Start with the document that can stay online.

2

Set limits

Choose open count, expiry, watermark, and reader checks.

3

Send link or QR

Readers open a browser viewer instead of receiving a plain attachment.

4

Track or revoke

Review access records or disable the share later.

View mode

SecureView and FenceView make browser reading harder to casually copy.

Session rules

Read count and time windows can stop the route after a fixed amount of use.

Browser first

Use this when a controlled link is better than sending an attachment.

Records later

History and later actions stay attached to the same share code.

Main Controls

The Online Sharing controls people actually use.

These are the common browser-link controls: limit, expiry, view mode, and per-session time.

Access Limit

Cap the number of opens

Stop the route after the chosen number of reads.

View Mode

Keep the PDF inside control

Use SecureView or FenceView instead of handing over a raw download path.

Each Session

Limit per-read time

Define how long each viewing session can last.

Expiration

Set an end window

Let the share stop after the chosen date or duration.

Proof

The controls live in the share, not on a detached copy.

That is the practical difference: the rule set stays on the same route the owner can still inspect later.

MaiPDF DRM settings for access limit and each session Read constraints

Access limit and per-session timing are configured before the share goes out.

MaiPDF security mode selection Security mode

The owner chooses the viewing mode in the same setup flow instead of using a separate tool.

Related Guides

Other MaiPDF controls that work with both routes.

These pages cover the individual controls referenced above and how to combine them.

Fence View

Mask most of the page so casual screen grabs lose value.

PDF Hosting

Host the original file instead of attaching it.

中文指南

MaiPDF 安全分享与 DRM 设置中文说明。

Start Here

Start with the route that matches the risk.

Choose Online Sharing for controlled browser delivery, or App DRM when the file package itself must stay protected.

Start Online Sharing Get App DRM