Reduce your PDF file size without losing visible quality — perfect for email and sharing.
Select a PDF to compress — your file stays on your device.
PDF compressed successfully!
Your compressed file has been downloaded.Large PDF files can be a headache. Email services often have attachment size limits (typically 25 MB for Gmail and Outlook), and large files are slow to upload, download, and share. Our PDF compressor helps you reduce file sizes so they're easier to work with while maintaining readable quality.
Our compression tool works by re-rendering each page of your PDF as an optimized JPEG image and then reassembling them into a new, smaller PDF. You can choose from three compression levels depending on your needs. The "Low" setting preserves maximum quality with moderate size reduction. The "Medium" setting (recommended for most users) offers a good balance between file size and visual quality. The "High" setting produces the smallest file size, which is ideal when you need to meet strict size requirements.
The most frequent reason people compress PDFs is to fit them within email attachment limits. But there are many other use cases: uploading documents to government portals that have strict file size restrictions, sharing files through messaging apps, reducing storage costs for large document archives, and making PDFs faster to load on websites.
Many online PDF compressors require you to upload your files to their servers, where they could potentially be accessed, stored, or leaked. Our tool is different — it processes your PDF entirely within your web browser. Your sensitive documents never leave your device, giving you complete peace of mind when compressing confidential files.
Looking for other PDF tools? You can merge multiple PDFs into one document, split a PDF into individual pages, or convert images to PDF.