How to make a PDF smaller to send on WhatsApp
WhatsApp can send large documents, but big PDFs are slow to send on mobile data and slow to open for the person receiving them. Shrinking the file first makes it send in seconds.
Compress a PDF nowOn your phone
- Open pdfsofo.com in your phone's browser and tap Compress.
- Add the PDF from Files (iPhone) or Downloads (Android).
- Pick Email size or Smallest, check the preview, then tap Share.
- Choose WhatsApp in your phone's share menu and pick the chat.
On a computer
Do the same at pdfsofo.com, download the smaller PDF, then attach it in WhatsApp Desktop or WhatsApp Web with the paperclip button.
Tips
- Photos of documents shrink the most, often 70–90%.
- If you're sending several photos of pages, combine them into one PDF first, which is easier for the other person to read.
- Need a password on it? Turn on Protect before sharing; the other person will need the password to open it.
Free, no watermark, no sign-up, and your file never leaves your device.Compress a PDF now
Questions
Does pdfSofo work on iPhone and Android?
Yes. It runs in the phone's browser; no app to install.
Does WhatsApp reduce the quality of PDFs?
No. WhatsApp sends documents as they are; that's why shrinking them first helps.
Tools for this
Compress a PDFShrink big PDFs, usually scans and photos, and see exactly how each option looks before you save.JPG to PDFTurn photos of documents, receipts or scans into one tidy PDF.
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