Make a PDF smaller for WhatsApp and Telegram

1 min read·25 July 2026

WhatsApp and Telegram have file limits: WhatsApp max 100 MB, Telegram max 2 GB but documents over 10 MB load slowly. Compress your PDF for faster sending.

Why a PDF is too large for WhatsApp

A PDF with many images, high resolution, or many pages can easily be 20–50 MB or more. WhatsApp accepts files up to 100 MB, but large files are slow to send and receive.

Compress PDF in PDFrust

Open the Compress tool on PDFrust. Upload your PDF. Choose the compression level (default works well for most documents). Download the compressed version. Send it via WhatsApp, Telegram, or Signal.

Compress PDF

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How much smaller does it get?

Compression depends on the content: PDFs with many photos become 50–80% smaller. PDFs with pure text barely shrink (text is already compact). A 20 MB photo PDF typically becomes 5–8 MB.

Alternative: compress images separately

Does your PDF consist mainly of photos? Use the image compress tool to specifically shrink the images in the PDF. This gives more control over quality vs. file size.