Compress PDF Online Free
Reduce the size of your PDF instantly. Choose your compression level and download a smaller file in seconds — no signup, no watermark, no software to install.
🗜️ Compress PDF
Compression Level
Need other free tools? You can also merge PDF files, unlock a PDF, or compress images online — all free and browser-based.
Compress PDF Online — No Signup, No Watermark, No Limits
- Three compression levelsPick Maximum Compression, Balanced, or High Quality depending on your priority.
- Preserves formattingText, layout, and links stay intact — only file size is reduced.
- Secure and privateFiles are processed over encrypted connections and deleted after download.
- Works on all devicesUse on Windows, Mac, iPhone, Android, or any browser.
Why Compress a PDF?
Large PDFs are slow to email, slow to upload, and can hit attachment or storage limits. Compressing removes redundant image data and optimizes internal structure without touching your actual content — useful for emailing reports, uploading forms to portals, or archiving scanned documents to save storage space.
Every file you upload is transmitted over an encrypted HTTPS connection and permanently deleted from our servers once you've downloaded the result. Nothing is stored beyond the conversion session.
Frequently Asked Questions
Is this PDF compressor free?
Yes, compressing PDFs is completely free with no signup, subscription, or hidden charges.
Will compressing reduce PDF quality?
You choose the compression level. Balanced and High Quality modes keep text and images sharp, while Maximum Compression trades some image quality for the smallest file size.
Are my PDF files safe?
Yes. Files are transmitted over encrypted HTTPS connections and permanently deleted from our servers after processing.
How much smaller will my PDF be?
Results vary by content, but most PDFs with images shrink by 40–90% depending on the compression level chosen.
Is there a file size limit?
No hard limit — both small and large PDFs are supported, though very large files may take longer to process.
Does it work on mobile devices?
Yes, the tool works on iPhone, Android, tablets, and desktops directly in the browser — no app needed.