WhatsApp accepts documents up to 100 MB, far more than any mail provider. This page aims at 90 MB to leave a margin, and the tool works down in three stages.
Very little quality is normally given up to reach it. The thing that ruins quality on this platform is sending pages through the photo picker rather than as a document.
Most PDFs never come near 100 MB, so this target mostly matters for the photo-heavy ones: a property brochure, a site inspection report with two hundred photographs, a wedding album, a full-resolution portfolio. Those can start well above the cap, and the ladder brings them under it with photographs that still look like photographs.
Where the 90 MB limit comes from
- WhatsApp document attachments100 MB, sender-side check
- Safe target for reliable delivery and preview90 MB
- WhatsApp Business, configurable by the account ownermay be lower
- Broadcasts and large groupseffective ceiling sometimes lower
- Photos sent as images rather than documentsrecompressed heavily by WhatsApp
WhatsApp raised its document limit to 100 MB while leaving image handling as aggressive as it always was, which is why how you send a file matters more than how large it is.
How the tool hits 90 MB
Add the PDF
WhatsApp takes documents up to 100 MB, which is far more generous than email. The file is measured against 90 MB to leave a margin, and it is read in locally rather than uploaded anywhere first.
Structure, then a ladder that usually stays at the top
The structural pass is free and often enough on its own at this cap. If the images still carry the weight they come down from 200 ppi, but very little quality is normally given up to reach 90 MB.
Stage three, which a WhatsApp document should never need
A file that cannot reach 90 MB is unusual and is almost certainly a very long scan. Splitting it is the better answer, since a rebuild at that length is slow and costs quality for no good reason.
Download, and read the result line
It names the size. Send the result as a document rather than as photographs, because sending pages as images is what actually destroys the quality on this platform.
Structure, then the images in place, then the pages as pictures. It stops at the first stage that fits.
Untouched at the first two stages. If the pages do get rebuilt, an invisible text layer keeps them searchable.
The IDs, forms and statements people compress for portals never leave the device.
What fits in 90 MB, and what does not
Almost anything, including scans running to several hundred pages. The cap is rarely the constraint here, which makes this the one target where the advice is mostly about how you send the file.
When it cannot reach 90 MB
A PDF too large for WhatsApp is unusual, since the document limit is far higher than email allows. Three checks:
- Confirm you are sending it as a document. Sent through the photo picker, pages are re-encoded as images and lose a great deal of quality. The document option keeps the PDF intact.
- Split a very long scan. Use Split PDF where the file runs past 100 MB, which in practice means a scan of several hundred pages.
- Rescan at a sensible resolution. A document that reaches 100 MB was almost certainly captured at a far higher resolution than it needs.
Send photos as a PDF document, not as images
WhatsApp recompresses every image sent as a photo, hard. A 4 MB picture arrives as a few hundred kilobytes with visible artefacts, and there is no setting to prevent it. A file sent as a document is transferred as it is. So the way to deliver photographs at quality on WhatsApp is to put them in a PDF and send the PDF as a document.
Where people use the 90 MB target
- Property brochures to prospective buyersphotos, fits
- Wedding and event albums shared with familyphotos, attempt 1 or 2
- Site inspection and engineering reportsphotos and text
- Full-quality design portfoliosimages
Why this runs in your browser
Messaging apps are used for personal paperwork more than anything else. Compressing locally means the document is not copied to a compression service before it is copied to the chat.
The tool is right above
Everything on this page runs in your browser. Scroll up, drop the file, and keep it on your machine.
Common questions
What people ask when sending a PDF through WhatsApp.
01Why not exactly 100 MB?
Files at the ceiling occasionally transfer and then fail to open on the receiving phone, and business accounts or groups may enforce a lower limit. Targeting 90 MB avoids the edge cases with no visible cost.
02Can I send the photos as images instead?
You can, and WhatsApp will recompress each one heavily with no way to prevent it. Sending them inside a PDF as a document preserves the quality you chose.
03Will the text still be readable?
Yes. Very little is given up to reach 90 MB, and the structural pass alone is often enough.
04Will the text still be selectable?
Yes, essentially always. A rebuild would only happen on a scan of several hundred pages.
05What if the file cannot get under 90 MB?
You get the smallest attempt with its size. Splitting is the better answer at this length, since a rebuild would be slow and cost quality for nothing.
06My file was already small. Why did it grow?
It returns an already-small file untouched. Send it as a document rather than through the photo picker.
07Are my files uploaded anywhere?
No. Rendering and compression run in your browser. The file never leaves the device.
08Is it free?
Free. Every tool, unlimited use, no signup.