Compress PDF for free
Our compress PDF tool reduces your file size so it is easier to email, upload or store. It runs in your browser, keeping your document private while shrinking it fast.
Compress PDF
Shrink your PDF's file size so it is easy to email or upload. Choose a compression level. Runs in your browser.
Compress PDF
Free · No sign-up · Processed on your device
Up to 30 MB per file and 100 PDF pages. Multiple uploads: up to 30 files and 60 MB combined. Very large images have additional processing limits.
Drop your file here or click to upload
Your file stays private — it is processed securely.
How it works
1
Upload the PDF you want to compress.
2
Choose a compression level.
3
Download your smaller PDF.
Balance size and quality
Choose less compression for higher clarity or stronger compression for a smaller file. This tool rebuilds pages as images inside a PDF: the compressed output loses selectable, searchable text, and fine details may become less clear. Keep the original and inspect small text, stamps and images after downloading.
Meet upload size limits
Compression can help scanned attachments meet upload limits, but a particular final size is not guaranteed. Do not use the image-based compressed output for a resume that needs ATS text extraction. Keep a text-based original, or create a lightweight CV with Astr from the start. If recompression makes the file larger, the tool returns the original unchanged and tells you.