How-to guide
How to compress a PDF
Reduce file size for sharing or email attachments — without sending your document to a server to do it.
Compression runs in your browser — the original and the compressed version stay on your device.
Why local compression matters
Most online PDF compressors work by uploading your file to their server, compressing it there, and returning the result. There is an irony in this: you are transmitting your document to a third-party server in order to reduce its size before sending it somewhere else.
Filecraft compresses entirely in your browser. The document never leaves your device at any point in the process — not the original, not the compressed output, not at any intermediate step.
Step by step
Four steps from original to compressed — all in your browser.
- 1
Open the Compress PDF tool
Navigate to the Compress PDF tool. No account is required.
- 2
Drop your PDF
Select or drag the file you want to compress. It is read into your browser's memory.
File location: Your browser
- 3
Choose a compression level
Select your preferred level — low, medium, or high. Higher compression reduces file size more but may affect image quality.
File location: Your browser
- 4
Download the compressed PDF
The compressed file is written directly to your device. Close the tab and browser memory is cleared.