Compress PDF

Reduce PDF file size up to 80% without losing quality.

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How to Compress PDF Online?

Significantly reduce the size of your PDF documents without compromising quality. Perfect for emailing and uploading.

Upload PDF File

Drag & drop your PDF file. We handle large files quickly and securely.

Choose Compression

Select 'High Quality' for balanced results or 'High Compression' for smallest size.

Download Smaller PDF

Get your optimized PDF instantly. Ready for email or web upload.

Pro Tip: Lossless Compression

Use the "Lossless" mode if you only want to strip unnecessary metadata and optimize file structure without touching your images at all.

Engineering Philosophy

Smart Compression.
Zero Visual Loss.

We use **Ghostscript**, the gold standard in PDF processing, to intelligently analyze and compress your documents.

Instead of blindly crushing image quality, our algorithm uses **bicubic resampling** to smooth images as they are downsized, preventing the blocky artifacts seen in cheaper tools.

Text remains as vector data, meaning it stays razor-sharp at any zoom level. We only compress what the eye can't see, stripping invisible metadata and optimizing font subsets.

Crafted by Ex-SaaS Engineers

Vector Text

Fonts stay sharp, only images are compressed.

Fast & Light

Reduce file size by up to 80% instantly.

Safe & Secure

Files deleted instantly after processing.

Why Compress PDF Files?

High-resolution scans and image-heavy reports can easily exceed email attachment limits (usually 25MB). Large files also load slowly on websites and mobile devices.

PDF Compress optimizes your document by downsampling images and removing redundant data. The result is a lighter, faster file that looks identical to the original on screen.

Standard vs. Smart Compression

Feature

Standard Tools

Our Tool

Text

Can get blurry

Always Sharp (Vector)

Images

Blocky/Pixelated

Smooth (Bicubic)

Metadata

Often Left In

Cleaned

Size Reduction

Variable

Up to 80%

Understanding Compression Modes

Lossless (Level 0): Removes unused objects and cleans metadata. No visual change. Best for legal documents.
High Quality (Level 1): Resamples images to 150 DPI. Perfect for onscreen viewing and printing on office printers. This is the Balanced choice.
High Compression (Level 2): Resamples images to 72 DPI (Standard screen resolution). Best for emailing and web hosting.

Key Terminology

DPI (Dots Per Inch)

The resolution of images. 72 DPI is standard for screens; 300 DPI for high-quality print.

Lossless

Compression where no data is lost; the original can be perfectly reconstructed.

Lossy

Compression that reduces file size by permanently discarding some data (like reducing image quality).

Vector Text

Text stored as mathematical paths, ensuring it remains sharp at any zoom level.

Tips for Best Results

Check Original Quality

If your PDF is already low quality or very small, further compression might not reduce the size much and could make images blurry. Compression works best on high-resolution files.

Choose the Right Mode

For printing, stick to "High Quality" (Level 1). For emailing or web upload where small size is critical, use "High Compression" (Level 2).

Tool Specs

Input FormatPDF

Output FormatPDF

Text Quality100% Vector

Max File Size100 MB

Security Encrypted

Private & Secure

Your documents are processed in secure, isolated containers and are permanently deleted immediately after processing.

Enterprise Grade

Trusted by Professionals

"Reduced my portfolio from 50MB to 8MB without ruining the drawings. Amazing."

David K.

Architect

"Perfect for submitting assignments that have strict file size limits."

Sarah L.

Student

Common Questions

How much will my file size be reduced?

It varies based on the content. Text-heavy PDFs won't shrink much, but files with many high-res images can often be reduced by 50% to 80%.

Will my text become blurry?

No! We use advanced Ghostscript parameters to keep all text as vector data. Only raster images (photos, scans) are downsampled to save space.

Is it safe to upload confidential documents?

Yes. We use enterprise-grade encryption for uploads, and our servers automatically delete your files after 2 hours. No one reads your documents.

What is the difference between the compression levels?

Lossless keeps everything perfect but reduces size less. High Quality (Recommended) is great for most uses. High Compression shrinks files the most but images may look slightly lower quality.

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