WhatsApp supports PDF sharing directly — no workarounds needed. You can send a PDF as a document attachment in any WhatsApp conversation, and the recipient can open it directly in the app or save it to their device. The main practical consideration is file size: WhatsApp limits document attachments to 100MB, which covers most PDFs but not the largest files.
Sending a PDF on iPhone
On iPhone, WhatsApp can access PDFs stored in the Files app:
- Open WhatsApp and navigate to the conversation
- Tap the + icon next to the text field
- Select Document from the options
- Browse to the PDF in the Files app and tap it to select
- Tap Send — the PDF appears as a document in the conversation
Alternatively, find the PDF in the Files app first, long-press it, tap Share, and select WhatsApp from the share sheet. Choose the contact or group you want to send it to and confirm. This route is faster when you're already in the Files app browsing documents.
Sending a PDF on Android
On Android the process is similar:
- Open the conversation in WhatsApp
- Tap the paperclip attachment icon
- Select Document
- Browse your device storage to find the PDF
- Tap the file and then Send
You can also share directly from a file manager app: find the PDF, long-press, tap Share, and select WhatsApp. This is useful when the PDF is in a specific folder in your storage.
Sending a PDF on WhatsApp Desktop or Web
WhatsApp Web and the desktop app also support PDF sharing. Open the conversation, click the paperclip icon, select Document, and browse your computer for the PDF file. Click Open and then Send. This is often faster when you're already working on a computer and the PDF is in your downloads or documents folder.
WhatsApp desktop also supports drag-and-drop — drag the PDF file directly into the conversation window and drop it. WhatsApp asks whether to send as a document or as media; always choose Document for PDFs to preserve the file format and prevent WhatsApp from attempting to treat it as an image.
The 100MB File Size Limit
WhatsApp's document limit is 100MB — generous enough for most PDFs. If your file exceeds this, compress it first. WukongPDF's PDF Compression tool at www.wukongpdf.com typically reduces PDFs by 50-70%, bringing most files well under 100MB. After compressing, check the file size before attempting to send.
For files that remain over 100MB even after compression — very high-resolution design files, large technical manuals with many images — use a cloud storage link instead. Upload to Google Drive or Dropbox, copy the sharing link, and paste it into the WhatsApp conversation as a message. The recipient taps the link and downloads the file.
How Recipients Open PDFs From WhatsApp
When someone receives a PDF on WhatsApp, they see a document preview in the conversation with the filename and file size. Tapping it opens the PDF in a viewer — on iPhone it opens in a preview where they can also choose to open in another app. On Android it opens in the default PDF viewer or offers a choice of apps. Recipients can save the PDF to their device by tapping the download icon. Saved PDFs go to the Downloads folder on Android or the Files app on iPhone, from where they can be accessed without WhatsApp.