Compress PDF
Shrink file size while keeping text and image quality.
Drop a file here
Or click to choose one — processing starts instantly, right on your device.
🔒 Processed locally, never transmitted
How it works
Compressing a PDF reduces its file size, which is especially useful when a file is too large to email, needs to upload faster to a portal with a size limit, or simply takes up too much storage space. This tool works by removing redundant internal structure from the file — it doesn't currently re-compress embedded images, so size reduction on image-heavy scanned documents will be more modest than on text-heavy files.
How to use it
- Choose your PDF — The tool reads the file's current size.
- Compression runs automatically — No settings to configure — it happens the moment you choose a file.
- Download and compare — The size reduction is shown before you download.
Common questions
Will compressing reduce the quality of my PDF?
Text and vector content stay exactly as sharp as the original — this tool doesn't recompress embedded images, so visual quality throughout the document is fully preserved.
Why did my file only get slightly smaller?
If your PDF is mostly scanned images rather than text, the size reduction will be modest, since this tool optimizes document structure rather than recompressing images.
Is there a file size limit?
No hard limit, though very large files (over roughly 100MB) may take a little longer since everything processes on your own device.
Is my file uploaded anywhere?
No. This tool processes your file directly in your browser. It is never sent to a server, stored, or seen by anyone.
Is there a file size or daily limit?
No daily limit. Very large files (roughly 100MB+) may be slow since everything runs on your own device's memory rather than a server.
Do I need to create an account?
No. Every tool on this site is free and requires no sign-up.