Is my PDF uploaded to any server during compression?

Never. Unlike cloud converters (Smallpdf, iLovePDF) that upload your confidential files to their servers, Jemixo executes all compression 100% client-side inside your browser RAM using Mozilla PDF.js and HTML5 Canvas. Your documents never leave your computer or phone.

Can I compress PDFs to strict portal limits like 100KB or 200KB?

Yes. We offer one-click presets for <100KB, <200KB, and <500KB alongside Extreme, Recommended, and High-Quality compression modes with an optional Grayscale switch for maximum reduction.

Is there any file limit or watermark added to the compressed PDF?

No. There are zero file limits, zero daily quotas, no required registrations, and zero watermarks. You receive 100% clean, professional PDFs.

Is this tool suitable for confidential legal contracts and bank statements?

Yes. Because zero data leaves your local machine, it is 100% safe for NDAs, bank statements, tax filings, legal agreements, and medical records.

100% On-Device Engine · Zero Server Upload

Compress & Reduce PDF Size Privately

Shrink large PDF documents in seconds without uploading sensitive data to any server. Multi-page document downscaling, exam portal size presets (<100KB, <200KB, <500KB), and watermark-free downloads.

🔒 Zero Server Upload (100% Private) ⚡ Unlimited Files · No Paywall 📄 Watermark-Free Clean PDFs 🎯 <100KB & <200KB Govt Exam Presets

Drop your PDF file here, or click to browse

Works on all PDFs (up to 100MB+). Rendered locally in your device RAM.

PDF

document.pdf

Original Size: 4.2 MB · 6 Pages

Choose Compression Mode

Recommended

Balanced Quality

~65% Size reduction. Crisp text & diagrams. Best for emails, job applications, and general sharing.

Maximum Shrink

Extreme Compression

~85% Size reduction. Optimized for tight govt exam portals (<200KB or <100KB).

High Fidelity

Low Compression

~35% Size reduction. Preserves ultra-high DPI clarity for legal contracts and portfolio prints.

Convert to Grayscale (B&W) for extra 25% file reduction

Output DPI: 130 DPI (Balanced)

Analyzing PDF pages...

Page 1 of 1 · Processing in local browser memory

Compression Complete!

Your file is ready to download. Zero server uploads occurred.

🎉 78% Space Saved

Original File Size

4.20 MB

Compressed File Size

920 KB

Visual Quality Preview (Rendered Pages) ✓ Ready for Download

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Download the Jemixo Scanner Android APK. Instant edge detection, offline thermal bill storage, and Kasauti authenticity checks without cloud subscriptions.

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Frequently Asked Questions — Private PDF Compression

Why is Jemixo PDF Compressor safer than other websites?

Websites like Smallpdf or iLovePDF require you to upload your files to their external cloud servers, creating data privacy and compliance risks. Jemixo processes 100% of the PDF downsampling directly in your browser RAM using client-side JavaScript. Zero bytes are uploaded to our servers.

Can I compress PDFs for government exams (SSC, UPSC, IBPS)?

Yes! Indian recruitment portals often enforce strict file caps (e.g., under 200KB or under 500KB). Select the "Extreme Compression" preset or enable the Grayscale toggle to quickly bring multi-page marksheets and caste certificates under gate limits.

Does compression affect text quality and legibility?

Our Balanced Quality preset preserves crisp typography by rendering at 130 DPI with high-efficiency JPEG chroma subsampling. It retains high readability while reducing bloated uncompressed scan layers.

Is there any limit on page count or daily compressions?

No. Because the processing uses your own device processor rather than our cloud server bandwidth, you can compress unlimited documents with unlimited pages 100% free with zero watermarks.