doPDF (Free) vs doPDF (Premium) vs novaPDF
doPDF 与 novaPDF 建立在同一平台和同一公司。虽然 doPDF 是免费的并且推荐用于随意使用，但 novaPDF 被推荐用于更高级的 PDF 需求。
下面是 doPDF 和 novaPDF 之间的快速比较，以帮助您确定最适合您的需求。
General |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
|---|---|---|---|
| Print from any Windows application | |||
| Add-ins for Microsoft Office | |||
| Interface available in multiple languages | |||
| Use custom page size | |||
| Set printing resolution (72 to 2400 dpi) | |||
| Page scaling (1-400%) | |||
| Set page orientation (portrait/landscape) | |||
| No ads in Save dialog | |||
| Add multiple virtual PDF printers | |||
Security |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| Add user password protection | |||
| Add owner password protection | |||
| Encrypt PDF files (AES, 128-bit and 256-bit) | |||
| Disallow printing the document | |||
| Disallow extracting text and graphics from the PDF | |||
Document information |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| Set PDF information (title, subject, author, keywords) | |||
| Add Copyright info in PDF | |||
Fonts |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| Embed font subsets | |||
| Support for OpenType, TrueType and Type1 fonts | |||
| "Embed all fonts" and "Always/never embed" list of fonts | |||
Profiles |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| Embed formulas, tables and images | |||
| Detect URLs/local files and convert to PDF links | |||
| Choose PDF Version (1.3/1.4/1.5/1.7) | |||
| Create and manage predefined page sizes | |||
| Private and public profiles | |||
Connectivity |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| Use as desktop printer | |||
| Share as network printer | |||
| Use with Terminal Services | |||
| Use through Remote Desktop Connection | |||
| Use as PDF Server | |||
Graphics |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| Compress/Downsample text and graphics | |||
| JPEG and ZIP compression methods | |||
| Downsample indexed/monochrome/high color images | |||
PDF Bookmarks |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| Add PDF Bookmarks | |||
| Detect bookmarks by font, size, style, color | |||
| Allow multiline bookmarks | |||
Watermarks, Overlays & Signatures |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| Insert text/image PDF watermarks | |||
| Overlay PDF files | |||
| Sign PDF files (using digital signatures) | |||
Actions, Emails & Upload |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| After save actions with presets (open, run, copy, delete) | |||
| Automatically send PDF via email | |||
| Automatically upload generated PDF to FTP/SFTP servers | |||
Print Monitor & History |
doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |
| Export realtime and archived printing monitor logs | |||
| Printer Monitoring tool | |||
| Printing history with statuses | |||
| doPDF（免费） | doPDF Premium | novaPDF 专业版（付费） |