PDF Compressor
Reduce PDF file size to 100 KB, 200 KB or any size for online forms — free and private
Free Online PDF Compressor
This free PDF Compressor reduces the file size of your PDF so you can upload it to job portals, exam forms, scholarship websites and email without any trouble. Many online applications only accept documents under 100 KB, 200 KB or 500 KB, but scanned certificates and mark sheets are often several MB. With this tool you can choose a compression level or simply enter the target size in KB, and it will create the best-quality PDF that fits within that limit.
How to Compress a PDF
- Click Select PDF File and choose your PDF from your phone or computer.
- Choose a Compression Level: Low, Recommended or Extreme.
- If the portal has a size limit, enter it in Target Size in KB (for example 200). You can also tick Black & White for an even smaller file.
- Click Compress PDF, check the new size, then click Download Compressed PDF.
Features
- Compress PDF to a specific size in KB, such as 100 KB or 200 KB.
- Three compression levels to balance quality and file size.
- Black & White option for scanned documents to save even more space.
- Shows the original size, new size and percentage saved.
- Supports password-protected PDFs if you know the password.
- 100% private — your PDF is compressed in your browser and never uploaded to any server.
Tips for Job Application Documents
Start with the Recommended level and check that the text is still easy to read before uploading. If you need a very small file, enter the exact KB limit from the official notification instead of choosing Extreme, so you keep the best possible quality. Black & White works well for certificates and mark sheets, but keep colour for documents where a coloured stamp or photo matters. This tool turns each page into a compressed image, so it works best for scanned documents. Text in the compressed PDF cannot be selected or copied.
Frequently Asked Questions (FAQs)
How do I compress a PDF to 100 KB or 200 KB?
Select your PDF, type 100 or 200 in the Target Size in KB box and click Compress PDF. The tool automatically finds the best quality that fits within that size.
Is my PDF uploaded to any server?
No. Compression happens entirely in your browser. Your PDF never leaves your device.
Can I select or copy text after compressing?
No. To make the file much smaller, each page is saved as a compressed image, so the text cannot be selected or copied. The document still looks the same and is fine for uploading and printing.
Why is my PDF not getting smaller?
Some PDFs, such as text-only files created on a computer, are already very small. In that case the tool tells you that your original file is already optimized and you can use it as it is.
Which compression level should I choose?
Recommended gives the best balance for most documents. Choose Low if quality matters most, or Extreme if you need the smallest file. If there is a size limit, enter it in KB instead.
Can I use this PDF compressor on my mobile phone?
Yes. It works in any modern browser on Android and iPhone, with no app installation needed.