Compress a PDF online
This free PDF compressor reduces the file size of your PDF so it is easy to email, upload to a form or share on WhatsApp. Choose a compression level, or enter the exact size limit you need, such as 100 KB, 200 KB, 500 KB or 1 MB.
Your PDF is processed inside your browser. It is never uploaded to a server, so private documents stay private.
How to compress a PDF
- Click Select PDF or drag and drop your file.
- Choose Recommended, High compression, or Set a maximum file size and enter KB or MB.
- Click Compress PDF and wait while each page is optimized.
- Download your smaller PDF.
How to reduce a PDF to a specific size
Many websites and exam or job portals ask for a PDF under 200 KB, 500 KB or 1 MB. Choose Set a maximum file size, type your limit and pick KB or MB. The tool lowers the image resolution and quality step by step until your PDF fits.
Tips for a smaller PDF
- Scanned pages and photos shrink the most.
- If the result is blurry, raise the size limit or use Recommended.
- If the PDF is mostly text, it may already be small. Compressing it into images can make it larger.
- Compress one file at a time for the fastest result on a phone.