PDF Compressor by DocuPub review
A free, configurable compressor for users who want control beyond basic file shrinking.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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 single preset, particularly when image quality, document structure, metadata, or PDF/A preservation matter. The web option works without installation, while local processing provides an offline desktop route.
Its main strength is control over how compression affects a document. Users can configure color, grayscale, and monochrome image compression, adjust image quality, discard selected PDF objects and metadata, optimize files for fast web viewing, and preserve PDF/A. Additional options include object streams, page-content streams, font subsetting, and removal of duplicate resources. This breadth makes the product relevant to workflows where document behavior and file composition matter as much as the final size.
The free model keeps access straightforward across web and Windows, while API access extends the product to application workflows through PDFCOMPRESS parameters. The online service has a 50 MB file limit, so larger documents may call for the local application or an integrated process. The number of settings also makes this a better fit for users comfortable making compression choices than for anyone seeking a minimal, one-click utility. Choose it for free, configurable PDF reduction and multiple processing routes; consider a simpler alternative if granular document controls are unnecessary.
PDF Compressor by DocuPub pros and cons
- 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
PDF Compressor by DocuPub fact sheet, pricing and score →
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