XMate

Save profile notes on X and quickly adjust scheduled post time with shortcut buttons.

XMate is a memo and scheduling helper extension for X (formerly Twitter). Key features - Korean IME input safeguard to reduce last-syllable truncation while composing posts - Create, edit, and delete per-user notes on profile pages - Show saved notes inline next to user names in timeline - userId-based storage so notes survive handle changes - Multi-device sync with chrome.storage.sync - View/search/delete saved notes and check storage usage in Options - Quick schedule-time shortcuts in the scheduling modal - In 5m, 10m, 30m, 1h - +1h, -1h, +1d, -1d Data handling - Only user-entered notes are stored. - Data is kept in browser sync storage and is not sent to a separate custom backend server. v0.3.0 - Resolved the Chrome Sync Storage limitation (8KB per item quota limit) caused by storing all user records in a single aggregate key - Compressed internal JSON payload keys to a single character during storage I/O to significantly reduce overhead. - Result: The storage footprint per user has been slashed by over 70% allowing synchronize about 1,400 users simultaneously.