Birthday Reminder Tool

Birthday Reminder Tool is a simple and practical online tool that helps users manage friends and family birthday information, automatically calculate days until each birthday, and highlight upcoming birthdays and today's birthdays.

Features

• Birthday Management: Easily add, edit and delete friends and family birthdays
• Smart Sorting: Auto-sort by days until birthday, upcoming birthdays at top
• Today's Reminder: Highlight today's birthdays with celebration message
• Upcoming Alerts: Automatically mark birthdays within one week
• Countdown Display: Show precise countdown days for each birthday
• Relationship Tags: Support adding relationship labels (Mother, Father, Friend, etc.)
• Import/Export: Support JSON format data export and import for backup
• Local Storage: Uses browser local storage to auto-save data
• Real-time Update: Calculates in real-time when page is open, accurate without refresh

How to Use

1. Add Birthday: Enter name, birth date and relationship in the top form, click "Add Birthday"
2. View List: Added birthdays display below, sorted by countdown
3. Today's Reminder: If there's a birthday today, a prominent celebration notice appears at top
4. Upcoming Alerts: Birthdays within one week display special markers
5. Delete Birthday: Click the delete button on the right of each birthday record
6. Export Data: Click "Export Data" button to download birthday data in JSON format
7. Import Data: Click "Import Data" button to select JSON file to restore birthday data

Use Cases

• Family Use: Remember birthdays of parents, children, siblings
• Social Management: Manage birthdays of friends, colleagues, clients
• Marketing Reminders: Businesses record VIP customer birthdays for timely wishes
• Work Reminders: HR or admin manage employee birthday benefits
• Couple Use: Record partner and family birthdays for surprises

Relationship Tags Reference

• Mother, Father, Spouse, Child, Sibling
• Grandparent, Maternal/Paternal Grandparent
• Relatives (Uncle, Aunt, Cousin, etc.)
• Friend, Colleague, Client
• Other custom relationships

Data Notes

• All data is stored in browser local storage
• Changing browsers or clearing cache will lose data
• Regular export is recommended for backup
• Import will overwrite existing data, please operate carefully