How to Compress PDF to 400KB Online Free
Step: 01
Upload a PDF from your computer, choose a file, or drag and drop it.
Step: 02
Hit the “Compress PDF” button to compress the PDF to 400 KB.
Step: 03
Press “Download Compressed PDF” to save the file to your device.

PDF Compression Made Easy: Reduces Size to 400 KB
Works on:
Windows
Linux
Mac
iPhone
Android
Compress PDF
Shrink your PDF files fast with our simple and safe tool. PDFs are great for sharing and printing, but sometimes, they are too big. Our tool quickly reduces your file size so you can email, print, or share it easily.
PDF Quality
When you shrink a PDF, its quality may drop a little. Our PDF compressor keeps your file as clear as possible. We strive to maintain sharp details so the small PDF still looks good for reading and printing.
Upload from Cloud
Uploading files is simple with our tool. You can drag and drop your file or choose one from your computer or Dropbox. Our easy process lets you start working with your file quickly from anywhere you like.
Batch Compress
Compress multiple PDFs in one go, batch processing up to four files simultaneously. Streamline large or bulk compression tasks with ease, save time, and handle multiple documents without sacrificing quality.
Secure and Private
We delete your files shortly after compressing. We don’t store, share, or access your documents. We prioritize your privacy and security so you can compress files worry-free.
Exactly 400 KB?
Our advanced compression algorithm tries to shrink your PDF to exactly 400 KB every time. It works fast, keeps your document’s quality intact, and makes sharing and storing files effortless.