iText pdfOptimizer vs PDF Compressor by DocuPub

iText pdfOptimizer9.1Visit PCPDF Compressor by DocuPub8.5Visit

Higher score iText pdfOptimizer #2 in PDF Compression Software 9.1/10 Free plan · 30-day trial Free planFree trial✓ 2 of 3 features Visit iText

vs

PC PDF Compressor by DocuPub #8 in PDF Compression Software 8.5/10 Free plan Free plan✓ 2 of 3 features Visit DocuPub

• iText pdfOptimizer fits best

  Developers embedding PDF optimization

• PDF Compressor by DocuPub fits best

  Users needing free configurable compression

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Side by side

Feature	iText pdfOptimizer 9.1/10 Visit ↗	PCPDF Compressor by DocuPub 8.5/10 Visit ↗
At a glance
Editor score	9.1	8.5
Ranking	#2 in PDF Compression Software	#8 in PDF Compression Software
Best for	Developers embedding PDF optimization	Users needing free configurable compression
Pricing model	Free	Free
Starting price	Free	Free plan
Free plan	✓	✓
Free trial	30 days	—
Deployment	Self-hosted	Cloud, Desktop
Features iText pdfOptimizer 2/3 · PDF Compressor by DocuPub 2/3
Batch compression	✓ (best)	Not checked yet
Offline desktop app	Not checked yet	✓ (best)
API access	✓	✓
Specs
Compression modes	Not checked yet	Not checked yet
Maximum file size	Not checked yet	50 MB
Supported platforms	api, self_hosted	web, windows, api
Our review
Pros	Preset and custom profiles cover high, mid, low, and lossless compression. Optimizes images, fonts, streams, color spaces, and document structure. Supports batch processing, automation, size checks, and custom reports.	Free web and Windows compression options Detailed image, object, metadata, and font controls PDF/A preservation and PDFCOMPRESS integration support
Cons	Commercial licensing uses custom or volume-based pricing. The AGPLv3 option requires disclosure of the application's full source code. Designed for Java and .NET integrations rather than general browser use.	Online files are limited to 50 MB The local application is available for Windows Advanced settings may require document-processing expertise
Our verdict	iText pdfOptimizer is a developer-focused add-on for the iText Core PDF library, intended for teams embedding PDF optimization into Java or .NET applications. It can optimize PDFs for file size or processing speed through configurable… Read the review →	PDF Compressor by DocuPub reduces PDF file sizes through a free online service, a downloadable Windows application, and programmatic PDFCOMPRESS integration. It suits individuals and teams that want configurable compression rather than a… Read the review →

Strengths and trade-offs

• iText pdfOptimizer — where it wins

  • Preset and custom profiles cover high, mid, low, and lossless compression.
  • Optimizes images, fonts, streams, color spaces, and document structure.
  • Supports batch processing, automation, size checks, and custom reports.

  Where it doesn't

  • Commercial licensing uses custom or volume-based pricing.
  • The AGPLv3 option requires disclosure of the application's full source code.
  • Designed for Java and .NET integrations rather than general browser use.

• PDF Compressor by DocuPub — where it wins

  • Free web and Windows compression options
  • Detailed image, object, metadata, and font controls
  • PDF/A preservation and PDFCOMPRESS integration support

  Where it doesn't

  • Online files are limited to 50 MB
  • The local application is available for Windows
  • Advanced settings may require document-processing expertise

• iText pdfOptimizer9.1/10 · Free plan · 30-day trial

  A developer-focused PDF optimizer with detailed controls, automation, and flexible licensing.

  Visit iTextFull verdict →
• PCPDF Compressor by DocuPub8.5/10 · Free plan

  A free, configurable compressor for users who want control beyond basic file shrinking.

  Visit DocuPubFull verdict →