🔒 Your files, your eyes only. We never even get a look.
PDF · Compress · Free

Compress a PDF for WhatsApp

Sized for quick sending and receiving over WhatsApp, especially on mobile data.

🗜️
Click to choose a PDF, or drag it here
One file at a time

How to compress a PDF for WhatsApp

WhatsApp's actual document size limit is generous — up to 100MB for files sent as a "document" attachment, far higher than most people assume. But that hard cap isn't really the practical concern for most everyday sharing over WhatsApp: a large PDF can be slow to send and even slower for the recipient to download on a weak mobile signal or a limited data plan, which is the more common real-world problem, especially for the ID copies, receipts, and informal contracts that get shared over WhatsApp constantly in India.

Rather than compressing just enough to squeeze under WhatsApp's 100MB ceiling, it's worth compressing well below it — a quality setting around 45-60% typically produces a file in the low single-digit megabytes for a normal multi-page document, which sends and downloads almost instantly even on a 3G/4G connection. On a phone screen, that quality level is virtually indistinguishable from the original for text documents and ID scans, so there's little practical downside to compressing more aggressively than you might for an email attachment.

What's WhatsApp's file size limit for documents?
Up to 100MB when sent as a document attachment — much higher than most people expect, and rarely the actual constraint for everyday sharing.
Why does my PDF take so long to send on WhatsApp even though it's under the limit?
WhatsApp's 100MB cap is a ceiling, not a target — on a slow mobile connection, even a 10-15MB file can take a noticeable amount of time to upload and download. Compressing to a few megabytes makes sending and receiving near-instant regardless of connection quality.
Does compressing affect image quality when viewed on a phone screen?
At the quality range recommended here (45-60%), the difference is minimal on a phone screen — phone displays don't resolve fine detail the way a large monitor or print would, so moderate compression rarely looks noticeably worse in this context.

Related tools

Compress a PDF to under 1MB Compress a PDF to under 5MB Compress a PDF to under 10MB Compress a PDF for email Compress PDF (standard)