AVAILABLE FOR WEB, FLUTTER & QA PROJECTS
WhatsApp Link Preview Checker
The WhatsApp Link Preview Checker tests WhatsApp chat bubble previews, checking image file size constraints (under 300KB) and title formatting.
WhatsApp Link Parameters
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How to use this tool
1. Input Page URL & Metadata
Enter target URL, page title, and concise summary description.
2. Provide Image URL & File Size
Input og:image URL and ensure image size is under WhatsApp's strict 300KB limit.
3. Choose Device Platform
Simulate WhatsApp interface on iOS (rounded bubble) or Android (Material bubble).
4. Inspect Preview Bubble & Guidance
Review instant message rendering and actionable image weight recommendations.
Formula or logic used
WhatsApp Crawler & Scraper Constraints
WhatsApp's crawler (`WhatsApp/2.x`) enforces strict payload limits to conserve mobile bandwidth, dropping previews if images exceed 300KB.
Image File Size Limit: Maximum 300 KB (previews fail completely if file exceeds 300KB)Optimal Dimensions: 1200 x 630 px (square 600x600 px is also accepted for compact cards)Title Length: Truncated after ~65 characters on mobile devicesDescription Length: First 60-80 characters visible in chat bubbleHTTPS Requirement: Images served over HTTP without valid SSL certificates are rejected
Examples
Example 1: News Headline Article Shared in Group
Under 300KB threshold, generating immediate visual preview.
Example 2: Unoptimized Marketing Banner (1.2 MB)
Exceeds 300KB ceiling; tool warns user to compress image.
Common use cases
Direct-to-Consumer Marketing
Optimize product links shared in customer WhatsApp groups and broadcast channels.
Viral Referral Campaign Verification
Guarantee that invite/referral links generate engaging preview cards.
Image Compression Auditing
Identify and compress oversized Open Graph images that break WhatsApp sharing.
Regional Audience Optimization
Fine-tune link sharing for regions where WhatsApp is the dominant messaging app.
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Frequently asked questions
Why does WhatsApp show a blank gray box or no preview at all?
The #1 reason is image file size. WhatsApp strictly rejects preview images larger than 300KB. Compress your image using WebP or TinyPNG to keep it under 250KB.
Does WhatsApp require special meta tags?
No. WhatsApp uses standard Open Graph tags: og:title, og:description, and og:image. However, it requires an absolute HTTPS image URL.
Why doesn't my updated image show up immediately?
WhatsApp caches URL previews on local devices and routing proxies. Test updated URLs with a cache-busting query parameter (e.g. `?v=1`).
Are square or landscape images preferred for WhatsApp?
A standard 1200x630 (1.91:1) landscape image displays as a prominent banner card on modern versions of WhatsApp for iOS and Android.
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