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PDF Compressor

Measured results

Reduce PDF size with a text-preserving optimizer or image-based compression profiles. Compare exact sizes before downloading.

Private

Processing stays in this browser.

Honest

Exact before-and-after sizes.

Flexible

Preserve text or shrink scans.

Compress PDF

Compress PDFs for email, uploads, and storage with a text-preserving structural optimizer or image-based profiles for scans. Preview the first page and compare exact sizes before downloading.

Why Use This Tool

  • Offers Preserve text, Balanced, Smaller file, and Maximum profiles.
  • Reports the exact original size, output size, and measured reduction instead of promising a fixed percentage.
  • Keeps processing local and offers optional grayscale conversion for scanned documents.

Related Tools

Merge PDF files before compressing themConvert PDF pages to images

How DocuKit Processes This Task

  • Preserve text rewrites the PDF with compressed object streams. The three image profiles render at 144, 110, or 82 DPI and rebuild pages at their original physical dimensions.
  • Image profiles can reduce scans substantially, but searchable text, links, forms, layers, vector detail, and digital signatures are not preserved as interactive features.

Best For

  • Scanned PDFs and image-heavy documents that are too large for upload or email.
  • Quick size reduction attempts before sharing a file externally.

What to Check Before Downloading

  • Compare the final file size against the original instead of assuming compression helped.
  • Open the output and zoom into text or screenshots to confirm readability.
  • Keep a copy of the original PDF in case the compressed version is larger or too blurry.

Current Limitations

  • Image profiles rebuild pages as JPEGs, so searchable text, links, forms, layers, vectors, and digital signatures are no longer interactive.
  • The text-preserving profile may not shrink an already optimized PDF, while stronger image profiles can reduce sharpness.

Helpful Guides

How to Merge PDF Files Online

This guide explains the practical workflow for combining multiple PDF files online and keeping the output organized.

How to Compress a PDF and Choose the Right Quality

DocuKit can preserve interactive page content or rebuild pages as compressed JPEG images; this guide explains which profile fits each document.

How to Convert PDF to PNG Online

This guide covers when to export PDF pages as PNG files and how to get cleaner page images for reuse.

How to Redact a PDF Without Leaving Hidden Information

A practical, review-first workflow for marking sensitive content, removing source PDF structures, and verifying the separate sharing copy.

How to OCR a Scanned PDF and Review the Text

A practical, privacy-focused workflow for turning printed scans into searchable documents without treating OCR output as unquestionable truth.

Common Questions

Will compressing a PDF reduce quality?

The Preserve text profile keeps original page content. Balanced, Smaller file, and Maximum rebuild pages as JPEG images with progressively lower resolution and quality.

Which PDFs benefit most from compression?

Scanned documents and PDFs with many images usually shrink the most because they contain large image data.