Frequently Asked Questions

10 common questions about the D-Day share card tool.

Q1. Do I need to sign up?

No. The tool is free with no signup required. Your inputs stay in your browser's localStorage only.

Q2. Can I use the generated cards commercially?

Yes — cards you generate belong to you. The gradient backgrounds and emojis are free-to-use building blocks with no licensing restrictions.

Q3. Why is the Instagram Story size 1080×1350?

Instagram officially recommends 4:5 (1080×1350) for Stories and Reels covers. It avoids cropping issues compared to full 1080×1920, and the same image can be reused for feed posts.

Q4. KakaoTalk link previews aren't showing up.

KakaoTalk's crawler is slow, so the first share may show text only. The most reliable fix is to download the 1080×1350 PNG and attach it directly.

Q5. Besides exams and weddings, what else works?

Any milestone works — job start dates, trips, due dates, concerts, sports events, finals, anniversaries, birthdays. The "General" theme keeps it neutral for anything that doesn't fit the 6 preset categories.

Q6. Does the countdown follow the device timezone?

Yes. Target date is interpreted as local midnight in your browser, so the countdown reflects whichever timezone you're currently in.

Q7. Is the countdown data embedded in the URL?

Yes. The URL encodes title, date, and theme as query parameters — share the link and anyone opens the same countdown.

Q8. What happens after the target date passes?

After the target date, the card switches to "D+N" — the number of days elapsed. You can keep it running as an anniversary counter.

Q9. Are other languages supported?

Currently EN and KO only. Additional languages (JA, ZH, etc.) will follow based on usage signals.

Q10. The downloaded image looks low-resolution.

The on-screen preview is scaled. The downloaded PNG is always at full resolution (1080×1350 / 1200×1200 / 1200×630).