Make Your PDF Files Smaller
Large PDF files are hard to send by email, slow to upload and take up storage space. This tool reduces the size of a PDF mainly by optimizing the images inside it: photos and scans are downscaled to a sensible resolution and re-encoded with efficient JPEG compression, and the internal file structure is packed more compactly. Text, fonts and vector graphics are left untouched, so the document stays sharp and searchable.
The compression happens on our server: your file is uploaded, compressed and streamed back to you for download. Nothing is stored afterward. If a file is already optimized and cannot be made smaller, you get the original back unchanged.
Why Use This PDF Compressor?
- Three compression levels to balance file size and image quality
- Text and vector graphics keep their original quality
- Compress several PDF files at once and see how much space you saved
- No installation, sign-up or watermarking of your document
How to Compress a PDF
- Drag and drop your PDF file, or click to select one
- Choose a compression level and click the "Compress PDF" button
- Your compressed PDF downloads automatically once processing finishes
Frequently Asked Questions
Is this PDF compressor free?
Yes, compressing your PDF files is completely free.
Will compression reduce the quality of my PDF?
Only images are affected. With the Low level the difference is hardly visible; Extreme gives the smallest file but images may look softer. Text and vector graphics are never changed.
Is my file kept private?
Your PDF is uploaded to our server only for the duration of the compression, processed in memory, and discarded immediately afterward — it is not stored.
Is there a file size limit?
Yes, uploaded PDF files must be 1 GB or smaller.