Compress Your PDF File Online
Drop your PDF here
or click to browse - Max 100 MB
Select PDF FileHow to Compress a PDF File Online - 4 Easy Steps
Upload PDF
Click or drag your PDF file. Up to 100MB supported.
Choose Level
Pick Low, Medium, or High depending on whether you want the best quality or the smallest file size, e.g. under 500KB or 1MB.
Set Filename
Type your custom filename before downloading.
Download
Get your compressed PDF with your custom name. No watermarks.
Why Compress PDF Files Online Free?
Large PDFs cause problems - email limits, slow uploads, wasted storage. This free online PDF compressor solves this in seconds, with no sign up, and 3 compression levels, while keeping your text fully selectable and searchable. Plus, you can save with any custom filename - no software to install.
Common Use Cases
- Email: Most inboxes limit attachments to 25MB. Compress your PDF for email in seconds.
- Government Portals: Many portals have strict 2-10MB upload limits.
- Job Applications: Resume and document uploads often require small file sizes with specific names.
- WhatsApp Sharing: Smaller PDFs download faster on mobile, Android and iPhone.
- Cloud Storage: Save space in your cloud drive.
- Bulk Compress: Compress one large PDF file at a time, again and again, at no cost.
Compression Technology
This tool compresses PDFs with PostScript-based image recompression, tuned to keep text as selectable vector data while reducing image size and resolution - so you can compress a PDF without losing quality when it matters.
Image Recompression
Images re-encoded at optimal quality per level.
Font Subsetting
Only used characters kept, reducing font data dramatically.
Text Stays Selectable
Text is never rasterized - copy, highlight, and underline still work.
Custom Filename
Save your compressed PDF with any name you want.
Compress PDF to a Target File Size
Not sure which level to pick? Use the High compression level to get as close as possible to a small target size. Typical results people search for:
Exact output size depends on how many images your PDF has and their original resolution - a text-only PDF will compress much smaller than a scan-heavy one. If you need the file even smaller than what High gives you, try splitting a large PDF into parts first.
Your Privacy and Security
HTTPS Encrypted
All transfers use TLS encryption.
Auto-Delete
Files deleted within 10 minutes or after download.
No Logging
We never read, store, or share your files.
Isolated Processing
Each job runs separately. No cross-access.
Frequently Asked Questions
Can I choose my own filename?
Yes! After compression, you will see a filename input box. Type any name you want and click Download. The file saves with your custom name.
Will text stay selectable after compression?
Yes, at every level. We only compress images and fonts - the actual text content is never rasterized, so it stays fully selectable, highlightable, and searchable.
Which compression level should I use?
Recommended (Medium) for daily use. Low for the best possible quality with no visible loss. High for the smallest possible file, useful when you need a specific small size.
Can I compress a PDF without losing quality?
Yes. The Low compression level shrinks file size while keeping images and text looking sharp, so quality loss is minimal or unnoticeable.
Can I compress a PDF to a specific size like 100KB or 1MB?
Choose the High compression level to get as close as possible to a small target size such as 100KB, 200KB, 500KB or 1MB. The exact result depends on your PDF's content.
Is it really free with no sign up or watermarks?
Yes! 100% free, no watermarks, no signup, no hidden charges. Free forever.
Are my files safe?
Files uploaded via HTTPS, processed in isolation, auto-deleted within 10 minutes.
What is the max file size?
100MB. If larger, split it first with our Split PDF tool, then compress each part.
Does this work on mobile, Mac and Windows?
Yes! Fully responsive and works in any browser on iPhone, Android, Mac and Windows. Upload, compress, rename, download - all on your phone, no app needed.