100% Free · No Signup · Browser-based

Compress PDF Files
Reduce Size Instantly

Shrink your PDF file size without visible quality loss. Choose your compression level and download the optimized PDF in seconds.

🗜️

Drag & Drop a PDF file here

Or click to browse · Single PDF file

Choose PDF File
📄
—
—

⚙️ Compression Level

🏆

High Quality

Minimal compression. Best for printing and archiving.

~10-20% smaller
⚡

Balanced

Good quality with noticeable size reduction. Recommended.

~30-50% smaller
🔥

Maximum

Highest compression. Best for web sharing and email.

~50-70% smaller
—
Original Size
→
—
Compressed
—
Saved
Compressing PDF…

✅ PDF compressed successfully!

Why Use Our PDF Compressor?

Smart compression that keeps your documents looking great.

🔒

100% Private

Files never leave your device. Everything runs locally in your browser — no servers involved.

🎛️

3 Quality Levels

Choose between High Quality, Balanced, or Maximum compression to match your needs.

📊

Savings Report

See exactly how many KB/MB you saved and the compression percentage after each run.

⚡

Instant Results

No waiting. PDF compression completes in seconds directly in your browser.

How It Works

Compress PDF in 3 Steps

1

Upload PDF

Drag and drop your PDF or click to browse your device.

2

Choose Level

Select High Quality, Balanced, or Maximum compression depending on your use case.

3

Download

Click Compress and download your smaller PDF instantly with a savings report.

Frequently Asked Questions

Does compressing affect PDF text quality?
Text in PDFs is vector-based, so it is never degraded by compression. Only embedded images may be slightly reduced in resolution with higher compression levels.
How much will my PDF shrink?
Results vary based on PDF content. Image-heavy PDFs can shrink by 50-70%. Text-only PDFs may only reduce by 5-15% since they already contain minimal data.
Is my file uploaded to a server?
No. All compression happens entirely in your browser using JavaScript. Your file is never sent to any server, ensuring complete privacy.
Which compression level should I use?
"Balanced" is the best choice for most users. Use "High Quality" if you plan to print the document, or "Maximum" if you need to email it or share it online.

Compress PDF Online — Complete Guide

Large PDF files are difficult to email, slow to upload, and frustrating to share. Our browser-based PDF compressor reduces file size significantly while maintaining acceptable visual quality — no software installation, no file uploads to any server, and completely free.

💡 Best for image-heavy PDFs

PDFs containing photos and graphics compress the most — often by 50-90%. Text-only PDFs are already compact and may not reduce much further.

💡 Check quality after compression

Always open the compressed PDF and verify text readability and image clarity before sharing or printing.

💡 Compress before emailing

Most email services have a 25MB attachment limit. Compress your PDF first to ensure it gets delivered without issues.

💡 Re-compress if needed

If the first compression is not enough, you can re-upload the compressed file and compress again to reduce further.

PDF compression works by reducing the resolution of embedded images, removing duplicate content streams, and applying lossless data compression to text and vector elements. Our tool uses PDF.js and client-side processing to keep your documents private. The compressed PDF remains fully compatible with all PDF readers and maintains all text layers, making it searchable and selectable.

Trustpilot