Compress PDF Online Free
Reduce multiple PDFs with Smart, Maximum, or Lossless mode. Set target file sizes (50KB/100KB), preserve text quality, and download as ZIP — 100% private in your browser.
Drag & Drop PDF Files Here
Batch upload multiple PDF files. No file size or count limit • 100% private & local
Why Choose Our PDF Compressor?
Smart Mode — Preserves Text & Vectors
Unlike clumsy tools that rasterize everything into blurry images, Smart Mode analyzes each page. Vector text and crisp fonts remain selectable and searchable.
Target-Size Mode (50KB / 100KB)
Strict upload limits for UPSC, SSC, state portals, or university admissions? Set an exact KB target and our intelligent downsampling algorithm reaches it.
Bulk Compress Multiple PDFs to ZIP
Upload dozens of files simultaneously. Compress in one go and download everything packaged in an organized ZIP archive.
100% Private — Zero Server Uploads
All operations run strictly inside your web browser. Sensitive legal papers, salary slips, and Aadhaar/PAN cards never leave your computer.
Feature Comparison
| Feature | Our Tool | Other Online Compressors |
|---|---|---|
| Text & Vector Preservation | Smart Mode | Blurry Rasterization |
| Target Size Preset (50KB / 100KB) | Yes (Direct) | No |
| Privacy (Client-Side Only) | 100% In-Browser | Uploads to Server |
| Batch Compress & ZIP Download | Unlimited & Free | Paid Tier Only |
| Lossless Optimization Mode | Yes | No |
Frequently Asked Questions
How do I reduce a PDF to below 100KB?
Select Maximum Mode, click the 100 KB preset, and press Compress PDF. Our tool scales down image resolution to hit the targeted size limit.
Can I compress multiple PDF documents at once?
Yes! You can drag and drop multiple PDF files or add more via the studio. Compress all files simultaneously and download them packaged as a single ZIP archive.
Are my confidential files secure?
Absolutely. Files are processed entirely in your web browser using HTML5 Canvas and WebAssembly. No documents are uploaded to our servers.
What is the difference between Smart and Lossless?
Smart Mode re-encodes raster images while preserving vector text. Lossless Mode preserves all image pixels completely, only stripping metadata and optimizing document object streams.