What is WhatsApp's PDF file size limit?

WhatsApp allows document files up to 100MB. However, for fast sending and reliable delivery, especially on mobile data, keeping PDFs under 10MB is recommended.

Why can't I send a PDF on WhatsApp?

If your PDF is over 100MB, WhatsApp will reject it. If it's under 100MB but still failing, it may be a network issue. Compressing with PDFTash reduces file size dramatically — making it fast and reliable to send.

How do I send a large PDF on WhatsApp?

Compress the PDF with PDFTash first — most PDFs reduce by 70–90%. Then share the document file on WhatsApp (tap the paperclip icon → Document → select your compressed PDF).

Does compressing a PDF affect how it looks on WhatsApp?

No. The PDF opens exactly as normal in WhatsApp's built-in viewer. Text is always sharp, and images look identical at normal viewing sizes.

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Reduce PDF Size for WhatsApp — Free

Compress any PDF so it sends instantly on WhatsApp. Works on iPhone, Android and WhatsApp Web. No signup, no watermark, completely free.

💬 WhatsApp PDF Size — What You Need to Know

WhatsApp File Limit

100MB maximum per document

Any PDF under 100MB can be sent. But large files load slowly on mobile data.

Recommended Size

Under 10MB

PDFs under 10MB open instantly in WhatsApp. Under 5MB is ideal for mobile data users.

For Fast Delivery

Under 2MB

For group chats with many members, keep PDFs under 2MB so everyone can load it quickly.

WhatsApp Web

Same 100MB limit

Works the same on WhatsApp Web (browser). Compressed PDFs attach and send faster.

How to Send a Compressed PDF on WhatsApp

📱

On iPhone (iOS)

Compress PDF above → Download → Open WhatsApp → Chat → Tap paperclip → Document → Select PDF from Files app

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On Android

Compress PDF above → Download → Open WhatsApp → Chat → Tap paperclip → Document → Select from Downloads folder

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WhatsApp Web

Compress PDF above → Download → Open web.whatsapp.com → Chat → Click paperclip → Select document → Pick compressed PDF

🖇️

WhatsApp Business

Same as WhatsApp — paperclip → Document. Business accounts can also send via WhatsApp API with up to 100MB.

Frequently Asked Questions — PDF for WhatsApp

What is the WhatsApp PDF size limit?

WhatsApp allows document files up to 100MB. However, large PDFs load slowly on mobile data and can fail to send on poor connections. Compressing to under 10MB ensures fast, reliable delivery on all network speeds.

Why is WhatsApp saying my PDF is too large?

If your PDF exceeds 100MB, WhatsApp will reject it. Compress it with PDFTash first — most PDFs shrink by 70–90%, bringing even large files well within WhatsApp's limit.

How do I compress a PDF on my phone for WhatsApp?

Open pdftash.com/reduce-pdf-size-for-whatsapp in your mobile browser (Safari or Chrome). Upload your PDF, download the compressed version, and share it in WhatsApp. No app download needed.

Can I send a PDF on WhatsApp without compressing?

Yes, if it's under 100MB. But for fast delivery and to avoid failures on slow connections, compressing to under 10MB is strongly recommended for group chats and business use.