A large PDF can be a real problem — many online forms reject files over 100 KB or 200 KB, and email has size limits too. With the free Compress PDF tool you can shrink any PDF right in your browser, with no upload and no signup.
How to compress a PDF — step by step
- Open the Compress PDF tool and choose your PDF.
- Enter a target size in KB (for example, 100 or 200), or leave it empty to let the tool compress automatically.
- Pick a compression level — Light, Medium or Strong — or keep it on Automatic.
- Click Compress & Download and save the smaller file.
Which target size should I choose?
- Government / exam form uploads — usually 100 KB to 500 KB. Enter the exact limit the form asks for.
- Email attachments — keeping a PDF under 1–2 MB avoids most limits.
- WhatsApp sharing — smaller files send faster on slow connections.
Why use this PDF compressor?
- 100% free — no signup, no watermark, no daily limit.
- Private — your PDF is compressed in your browser and never uploaded to a server.
- Target-size control — ask for an exact KB size, or let it shrink automatically.
- Preview — you see the first page before you download.
Tip: PDFs made from photos or scans shrink the most. A PDF that is only text is already small and may not reduce much — that is normal.
