Compress PDF Online
Reduce PDF file size for free without losing quality. Optimize files for Email, WhatsApp, and Web uploads.
Drag & Drop PDF here
or click to browse files
Max file size: 50MB
Compression Level
100% Secure
Files are processed in your browser. No server upload.
High Quality
Smart compression algorithms maintain document clarity.
Fast Processing
Compress PDF files in seconds instantly.
Custom Sizes
Set any target size from 20KB upwards.
Free Online PDF Compressor – No Watermarks, No Sign‑up
Web tool Bazar provides a secure, browser‑based PDF compressor that instantly reduces file size without ever uploading your documents to a server. Perfect for email attachments, website uploads, or simply saving storage space.
Whether you need to shrink a PDF to 100KB, 200KB, 500KB or a custom target, our smart engine automatically balances quality and compression for the best possible result.
How to Compress a PDF in 3 Simple Steps
Upload PDF
Drag & drop your PDF file or click to browse from your device.
Choose Compression
Select Low, Medium, High or set a Custom target size in KB.
Download File
Click "Compress" and download your optimized PDF instantly.
Why Compress PDF Files?
- Meet email attachment limits (many providers restrict files to 20–25 MB).
- Speed up website uploads and downloads.
- Save cloud storage space.
- Improve document sharing via messaging apps.
Benefits of Our Compressor
- Client‑side processing – your files never leave your browser.
- Preserves quality by adapting compression to each page.
- Four compression modes including exact KB target.
- Unlimited usage – no daily limits, no watermarks.
How Our PDF Compression Engine Works
Our tool uses the latest PDF.js and jsPDF libraries to render each page, re‑compress images, and optimise font data – all directly in your browser. You can choose between:
Low, Medium, High – each adjusts image resolution and JPEG quality to quickly achieve a balanced file size.
Set an exact target size (e.g., 98KB). The engine iteratively adjusts scaling and quality until the output hits your goal while maintaining readability.
Frequently Asked Questions
Is this PDF compressor really free?
Yes, it's completely free. No hidden fees, no premium version, and no watermarks on your files.
Will my file be uploaded to a server?
No. All processing happens locally in your browser. Your PDF never leaves your device.
Can I compress a PDF to exactly 100KB?
Yes, use the Custom mode. Enter 100KB as your target, and the engine will do its best to reach that size. For very large PDFs it may produce a file slightly larger, but you'll be notified of the actual size before downloading.
Does compression reduce the quality of my PDF?
Using Low or Medium mode, quality remains almost unchanged for typical documents. High mode reduces resolution noticeably, which is acceptable for images but may blur text. Custom mode tries to preserve readability as much as possible.