Picking the header format is the first real decision in any WhatsApp template, and many teams choose an image simply because it looks better in the preview. WappBlaster supports image, video, document and location headers, plus quick-reply and call-to-action buttons and carousels, all sent as bulk campaigns on the official WhatsApp Business Platform. The useful question is which format makes the reader's next action obvious, and what each choice costs you in approval, file handling and delivery.
Matching each rich media format to a WhatsApp campaign job
| Format | Good for | Poor fit |
|---|---|---|
| Image header | Single product launch, event poster, offer creative | Dense text, tables, terms and conditions |
| Carousel | New collection, several property listings, menu sections | One item with lots of detail |
| Document (PDF) | Price lists, catalogues, invoices, admission forms | Anything meant to be glanced at once |
| Video | Product demo, site walkthrough, short how-to | Rural or low-bandwidth audiences, long talks |
| Location | Store opening, event venue, delivery bay | Online-only businesses |
A garment wholesaler in Surat sending a new season's range would use a carousel to show six designs with a "Get price list" button, then send the full PDF only to retailers who tap it. That keeps the first message light and the heavy file going only to people who want it.
Preparing rich media files so campaign messages arrive
Meta sets a size cap per media type, and video and documents have the least room. In practice you should aim far below those caps. A recipient on a patchy mobile connection sees a grey placeholder and a spinner, and many will never wait for it.
- Export images as compressed JPEG or PNG at phone-screen width; a 4,000-pixel product shot adds weight and no clarity.
- Keep campaign videos short and encode them as MP4 with H.264; trim the logo intro.
- Flatten PDFs and strip embedded fonts you do not need; a scanned catalogue of 40 pages should be split by category.
- Host the media at a stable HTTPS URL or upload it once and reuse the media reference across the send.
Buttons are where rich media campaigns turn into action
Media catches the eye; buttons convert. Quick-reply buttons (up to three per message) suit choices such as "Interested", "Send price list" and "Not now". Call-to-action buttons open a URL or dial a number. A URL button with a dynamic suffix lets every recipient land on their own product page or order page. Pairing a "Stop offers" quick reply with every promotional template also gives unhappy recipients an option other than the block button.
Personalising the media itself in WhatsApp campaigns
The header does not have to be the same file for everyone. With personalised images and PDFs, each contact can receive a certificate, quotation or event pass with their own name and details printed on it. Schools use this for fee receipts, and event organisers for entry passes with a QR code. If you only need the same PDF sent automatically after a trigger, the guide to sharing a PDF automatically on WhatsApp covers that simpler case.
How WhatsApp approval differs by rich media header type
Meta approves the template together with its header type. If your approved promo uses an image header, you cannot send a video through it; that needs a new template. Plan your library with this in mind: a "new arrivals image" template, a "new arrivals video" template and a "price list document" template, each with the same tone but submitted separately. The sample media you upload during submission should be representative, because reviewers look at it. Carousel and catalogue templates have their own structure, where each card carries its own media and buttons.
When rich media works against a WhatsApp campaign
Do not attach a video to a payment reminder or an appointment confirmation: the recipient needs two lines of text and a date, and the heavy file just delays it. Avoid image headers that contain all of the message's words as pixels, since they are hard to read and unsearchable in the chat. And do not send a large PDF to a full list when only a fraction will open it; the delivered-but-unread count in your analytics will tell you quickly.
Does media change the price?
No. Meta prices each delivered message by its category and the recipient's country, not by whether it carries an image or a PDF. WappBlaster passes that charge through at cost on top of a flat platform fee of ₹7999 annually (or $200 for businesses outside India), so a carousel campaign costs the same per message as a plain text one in the same category.