PDFOptim vs PDF Compressor by DocuPub

PDFOptim9.0Visit PCPDF Compressor by DocuPub8.5Visit

Higher score PDFOptim #3 in PDF Compression Software 9.0/10 Free plan Free plan✓ 2 of 3 features Visit PDFOptim

vs

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

• PDFOptim fits best

  Users wanting previews and cross-platform workflows

• PDF Compressor by DocuPub fits best

  Users needing free configurable compression

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Side by side

Feature	PDFOptim 9.0/10 Visit ↗	PCPDF Compressor by DocuPub 8.5/10 Visit ↗
At a glance
Editor score	9.0	8.5
Ranking	#3 in PDF Compression Software	#8 in PDF Compression Software
Best for	Users wanting previews and cross-platform workflows	Users needing free configurable compression
Pricing model	Free plan + paid	Free
Starting price	$4.99/mo	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Desktop, Mobile	Cloud, Desktop
Platforms	Web, macOS, iOS, Windows	Web, Windows
Features PDFOptim 2/3 · PDF Compressor by DocuPub 2/3
Batch compression	✓ (best)	Not checked yet
Offline desktop app	✓	✓
API access	Not checked yet	✓ (best)
Specs
Compression modes	Balanced	Not checked yet
Maximum file size	25 MB	50 MB (best)
Supported platforms	web, macos, ios, windows	web, windows, api
Our review
Pros	Side-by-side previews help compare compression quality before saving. Presets cover Web, Standard, Print, and Custom compression needs. Native batch processing supports scanned and vector PDF optimization.	Free web and Windows compression options Detailed image, object, metadata, and font controls PDF/A preservation and PDFCOMPRESS integration support
Cons	The Free plan allows only 3 operations per day. Free files are limited to 25 MB; paid plans allow up to 200 MB. Apple Shortcuts is the only listed integration.	Online files are limited to 50 MB The local application is available for Windows Advanced settings may require document-processing expertise
Our verdict	PDFOptim is a PDF compression product with browser-based tools and native applications for macOS, iOS, and Windows. It is designed for users who need to reduce PDF sizes across devices, compare output quality before saving, or process… 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

• PDFOptim — where it wins

  • Side-by-side previews help compare compression quality before saving.
  • Presets cover Web, Standard, Print, and Custom compression needs.
  • Native batch processing supports scanned and vector PDF optimization.

  Where it doesn't

  • The Free plan allows only 3 operations per day.
  • Free files are limited to 25 MB; paid plans allow up to 200 MB.
  • Apple Shortcuts is the only listed integration.

• 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

• PDFOptim9.0/10 · Free plan

  A flexible PDF compressor with previews, batch processing, and cross-platform coverage.

  Visit PDFOptimFull 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 →