Twitter Card Generator

Create optimized Twitter Cards for better engagement and professional appearance on Twitter

Card Type

Content Information

Optimal: 50-70 characters 0/70
Optimal: 120-200 characters 0/200

Summary Large: 1200x675px | Summary: 144x144px

Account Information

The Twitter handle of your website/brand

The Twitter handle of the content creator

Quick Presets

Twitter Preview

Image Preview
Twitter Card Title
Description will appear here to give users context about your content...
example.com

Generated Twitter Card Tags

Testing & Validation

🔧 Twitter Card Validator

Use Twitter's Card Validator to test your implementation:

cards-dev.twitter.com/validator

📋 Implementation

  • • Add tags to the <head> section of your HTML
  • • Ensure images are publicly accessible
  • • Test with different card types for optimal results

📊 Optimization Tips

  • • Use high-quality, relevant images
  • • Keep titles concise and compelling
  • • Include your Twitter handle for attribution

Features

  • 🐦 All Twitter Card types supported
  • 👁️ Real-time Twitter preview
  • 📊 Character count optimization
  • 📱 Mobile app card support
  • 🎬 Video player card integration
  • ✅ Built-in validation tools
  • 🎯 Ready-to-use presets

Benefits

  • 🚀 Increased Twitter engagement
  • 👆 Higher click-through rates
  • 🎨 Professional appearance
  • 📈 Better content visibility
  • 🔗 Enhanced link sharing
  • 💯 Twitter algorithm optimization
  • 📱 Mobile-optimized cards

Example algorithm (days)

// Using date objects in most languages:
days = (date2 - date1).days
Example: Days between 2025-01-01 and 2025-03-01 = 59 days (non-leap year).

6. Days Until

What it does: "Days Until" calculates how many days remain until a target date (a birthday, holiday, event). It is essentially a date-difference from today to a future date but often presented with friendly copy and optional recurrence handling for yearly events.

Features

Example: Today is 2025-09-24 — Days until 2025-12-25 (Christmas) = 92 days.

Putting it all together — Building reliable web calculators

Here are practical tips for developers and product managers building these tools on websites and mobile apps:

Sample HTML form (simplified)

<form id="percentage-form">
<label>Base: <input name="base" type="number" step="any" /></label>
<label>Percentage: <input name="percent" type="number" step="any" /></label>
<button type="submit">Calculate</button>
</form>

Attach client-side JS to compute results instantly and show them inside an accessible result container.

Design & SEO considerations

These calculator pages are highly searchable. Follow these quick SEO tips:

Conclusion

Age, Percentage, Loan, BMI, Date Difference, and Days Until calculators are simple but powerful tools that deliver immediate value. When implemented carefully — with correct formulas, clear UX, accessibility, and privacy considerations — they can significantly improve user engagement and trust. Developers should prefer reliable libraries for date and numeric handling, clearly document assumptions, and provide helpful explanations so users can understand and act on their results.

If you’d like, I can also provide ready-to-use JavaScript snippets for any of the calculators above (for example, a full amortization table script for the Loan Calculator or a BMI widget with unit toggles). Tell me which one you want first and I’ll include a copy-pasteable implementation.

Written as a detailed guide for developers and product teams building small utility calculators for web and mobile. Updated: 2025-09-24.