Compress PDF Online while preserving quality
Using this free pdf compressor online you can compress pdf file for free or compress pdf to 100 KB, 200 KB etc.
- • Δωρεάν λειτουργίες Premium
- • Γρήγορη επεξεργασία
- • Max Size 100 MB per file
Compression level
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How to Compress PDF Online
Reduce your PDF file size in three simple steps.
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Upload Your PDF
Click Select PDF Files or paste a remote URL. You can add multiple PDFs at once. Maximum size is 100 MB per file.
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Choose Compression Settings
Select a Quality Level preset — Screen (smallest), Ebook (balanced), Printer or Prepress (high quality). Or switch to Target Size to compress PDF to a specific size like 500 KB, 1 MB or 2 MB.
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Click Compress PDF
Click the Compress PDF button to start processing. All files are compressed simultaneously and you can download each compressed PDF individually or as a ZIP archive. Share results via link or QR code.
Why Use CompressJPG to Compress PDF?
Fast, private and completely free — no sign-up required.
No Sign-up Required
Compress PDF online instantly without creating an account. Completely free with no hidden limits.
Ασφαλές & Ιδιωτικό
Files are uploaded directly to secure cloud storage and automatically deleted after 24 hours. We never access your content.
Flexible Compression
Choose from four quality presets or set an exact target file size. Useful for email attachments, web uploads and print workflows.
Batch Processing
Compress multiple PDF files at once. Stage all your files, choose settings, then compress everything in one click.
Quality Preserved
Powered by Ghostscript — the industry-standard PDF processor. Text, fonts and vector graphics remain crisp after compression.
Easy Sharing
Share compressed PDFs via a link, WhatsApp or QR code. Recipients can download without any account.
Συχνές ερωτήσεις
Is it safe to compress PDF files online?
Yes. Your files are uploaded directly to secure cloud storage using encrypted connections. You can manually delete your uploaded files immediately by pressing delete button otherwise all file are automatically deleted after 24 hours.
Will compressing a PDF reduce its quality?
It depends on the compression level chosen. Screen mode reduces image quality significantly for smallest file size. Ebook is a balanced option for most use cases. Printer and Prepress modes preserve high quality suitable for printing.
How to compress pdf to 100 kb?
While compressing select target size option and enter 100 KB size, our pdf compressor will reduce pdf size to 100 kb.
Can I compress password-protected PDFs?
No. Password-protected PDFs cannot be compressed. Please remove the password protection first, then compress the file.
How much can I reduce a PDF file size?
Results vary depending on the PDF content. PDFs with many high-resolution images typically achieve 50–90% reduction. Text-heavy PDFs with few images may see smaller reductions of 10–30%.
Can I compress multiple PDFs at once?
Yes. Add as many PDFs as you need, choose your compression settings, then click Compress PDF to process all files simultaneously.
What is the difference between Screen, Ebook, Printer and Prepress?
Screen uses 72 dpi and gives the smallest file size. Ebook uses 150 dpi and is ideal for on-screen reading. Printer and Prepress both use 300 dpi and are suitable for high-quality printing.
How does Target Size mode work?
Target Size mode tries to compress your PDF to a specific file size you specify. It works by trying different quality levels and picking the one that best fits within your target. Very small targets may not always be achievable while maintaining readable quality.