CompressPDF

Shrink the size of your PDF files while maintaining optimal quality.

PDF Operations
CompressPDFSizeOnline —fast,private,andfree.
Reduce the file size of your PDF documents without losing quality. Optimize images and compress PDFs client-side, 100% free.
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Upload a PDF file to compress

Click to browse or drag & drop a file here

Max file size: ~200MB
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All PDF Tools

12 more free tools — all browser-native, zero uploads

PDF Edit

Merge PDF

Combine multiple PDF files into a single document in your preferred order.

Open tool
PDF Edit

Split PDF

Extract specific page ranges or split each page into a separate document.

Open tool
PDF Edit

Rotate PDF

Rotate one or all pages of your PDF document in any direction.

Open tool
PDF Edit

Delete PDF Pages

Remove unwanted pages from your PDF document and download the cleaned file.

Open tool
PDF Edit

Reorder PDF Pages

Rearrange pages of your PDF document into your desired sequence easily.

Open tool
Convert

JPG to PDF

Convert JPG images to PDF documents with customizable margins and layouts.

Open tool
Convert

PNG to PDF

Convert PNG images to high-quality PDF files with zero loss of transparency.

Open tool
Convert

Images to PDF

Combine multiple JPG, PNG, WebP, or GIF files into a single consolidated PDF document.

Open tool
Convert

PDF to JPG

Convert PDF document pages into high-quality JPG images directly in your browser.

Open tool
Convert

PDF to PNG

Render PDF document pages into lossless PNG files with transparent backgrounds.

Open tool
PDF Edit

Edit PDF

Add text, draw, and annotate on your PDF pages directly in your browser.

Open tool
PDF Edit

Add Signature

Easily draw, type, or upload your signature and place it anywhere on your PDF.

Open tool

How to use Compress PDF?

1

Select your PDF file and upload it to the workspace.

2

Select your compression level (Recommended, Extreme, or Low).

3

Click 'Compress PDF' to compress the file locally.

4

Download your optimized PDF file instantly.

Key Benefits

Maintain Visual Quality

Our compression algorithm selectively compresses images and unnecessary PDF structures without rendering text fuzzy.

Instant Compress

No waiting in upload queues. Files are processed locally and ready to download in a snap.

Privacy Assured

Since your document is compressed inside your browser, your private data never leaves your machine.

100% Secure Local Processing

Your files never leave your device. All operations run inside your browser using WebAssembly. Zero uploads. Zero tracking. Always free.

Frequently Asked Questions

It depends on the original content. If your PDF contains high-resolution images, we can often reduce the size by 50% to 80% without noticeable quality loss. Text-only PDFs compress less but are already small.

No, text remains fully vector-based and searchable. Only heavy image payloads and metadata structures are compressed.
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EverythingyouneedwithCompressPDF. Fast,secure,andcompletelyprivate.

Your browser.
Your files.

How it works. (01)

  • Select your PDF file and upload it to the workspace.
  • Select your compression level (Recommended, Extreme, or Low).
  • Click 'Compress PDF' to compress the file locally.
  • Download your optimized PDF file instantly.

Why PDFSwift. (02)

  • Maintain Visual Quality
  • Instant Compress
  • Privacy Assured

Privacy first. (03)

  • Zero file uploads to any server
  • WebAssembly runs in your browser
  • No account or sign-up required
  • 100% free, forever