Compress PDF — Reduce File Size Up to 70% Free
Reduce PDF file size by up to 70% free — no file size limit, no sign-up, no watermark. Choose Light, Medium, or Heavy compression. Text stays perfectly sharp at every level because PDF text is stored as vector data, not pixels. The compression engine runs locally in your browser — your documents never leave your device, and there is no artificial cap on how large a PDF you can compress.
Select or drop PDFs to compress
Batch supported • Preserves all links, forms & annotations
Feeding PDFs to an AI support agent?
helpGPT answers your customers' questions from your own docs, with citations and honest refusals.
Shrink image-heavy PDFs
Downsample oversized images at low, balanced or high quality while text and vectors stay sharp. Image-free PDFs barely change — there is little to remove.
Private by design
Compression runs locally in your browser, so scanned bank statements and photo rich reports shrink on your device and never travel to a server.
How to Compress a PDF — Step by Step
- 1Upload your PDF — drag/drop, up to 150MB supportedUpload your PDF — click Select PDF to Compress or drag and drop; up to 150MB supported.
- 2Choose compression level — Light (20–30%), Medium (40–50%), Heavy (60–70%)Choose Light (20–30%) for print quality, Medium (40–50%) for sharing, or Heavy (60–70%) for maximum compression.
Frequently asked questions
How much smaller will my PDF get?
Image-heavy PDFs often shrink 40–70%. Text-only PDFs may barely change — there is little to remove.
Does compression reduce quality?
Images are re-encoded at a lower resolution you choose; text and vectors stay sharp.
What is PDF compression?
PDF compression shrinks a file by downsampling oversized images and dropping unused data. Text and vectors stay sharp. Only images lose resolution, at the quality level you choose.
What is the largest PDF I can compress?
There is no artificial limit. Your device memory is the ceiling: most desktops handle files over 100 MB, while phones slow down sooner on very large scans.
How is this different from Smallpdf or iLovePDF compression?
Smallpdf and iLovePDF upload your file to their servers first. This compressor runs entirely in your browser, so sensitive files never leave your device.