Compress PDF for WhatsApp

WhatsApp allows documents up to 100 MB, raised from the older 16 MB limit that still applies to some older client versions. Telegram permits up to 2 GB and Signal up to 100 MB. Even well within these limits, smaller files send far more reliably over mobile networks.

Yes. Open this page in Safari or Chrome on your phone, tap the drop zone, choose your PDF from Files or Google Drive, and compress. Everything runs on the phone itself. Documents above roughly 50 MB may be slow on older handsets because compression is memory-intensive.

No. WhatsApp compresses photos and videos sent as media, but documents — including PDFs — are transmitted byte-for-byte exactly as you sent them. If you want a PDF to be smaller, you have to compress it beforehand.

It is gone from the page entirely. The document is held only in the tab's volatile memory during processing and is discarded when the tab closes. Nothing is written to browser storage, no cookie records it, and no copy exists anywhere else — your original stays untouched on disk.

Text always stays sharp because it remains real vector text rather than an image. Embedded photographs are downsampled and re-encoded, so quality loss scales with how aggressive a preset you choose. Less Compression is visually near-identical to the original.

Nothing persists. The compressed result lives in your browser tab's memory until you download it, and everything is discarded the moment you close or refresh the page. There is no server-side copy because the file was never sent anywhere.

Compression is one-way, but your original file is never modified — it stays exactly where it was on your device. The compressed version is written as a separate download, so you always retain the source and can simply try again with a gentler preset.

Yes, in two ways. Pick one of four calibrated presets for a quality-led decision, or switch to Target Size mode and enter an exact figure in KB or MB. Target mode steps through progressively stronger settings and stops at the highest quality that still fits your limit.

Yes. Drop in as many files as you like and they are queued automatically. Processing is deliberately sequential rather than parallel: compressing several large PDFs simultaneously would compete for memory and can crash the browser tab, so each file is handled in turn.

Yes, with no file limits, no watermarks and no account. Because processing happens on your device rather than our servers, there is no per-file cost to recover and therefore no reason to meter your usage.