---
slug: "flashcap"
title: "FlashCap"
description: "A macOS screenshot capture and annotation app. Supports arrow annotations, mosaic/blur/fill masks, timer capture, clipboard copy, and drag-and-drop sharing."
url: "https://www.ytyng.com/en/bio/flashcap"
achieved_at: "2026-01-27"
updated: "2026-02-15T05:20:51.983Z"
category: "アプリケーション"
image_url: "https://media.ytyng.com/20260130/ae017f934d1d4319af0367a61ef2e1d7.png"
lang: "en"
---

# FlashCap

# FlashCap

A macOS screenshot capture and annotation app.

## Features

- **Interactive screenshot capture** - Area selection capture
- **Timer capture** - 3/5/10 second delayed capture (configurable in Preferences)
- **Arrow annotation tool** - Customizable color, thickness, white stroke, and drop shadow
- **Mask tool** - Mosaic, blur, and fill modes with 8-direction resize handles
- **Clipboard integration** - Copy file path or image to clipboard
- **Drag & drop** - Drop directly to external apps like Slack
- **Undo support** - Cmd+Z to undo arrow and mask operations
- **Configurable save location** - Choose from tmp / macOS default / custom folder

## Tech Stack

- **Frontend**: SvelteKit 2 + Svelte 5 (runes syntax), TypeScript
- **Backend**: Rust (Tauri 2.x)
- **Build**: Vite, pnpm

## Repository

[GitHub](https://github.com/ytyng/flashcap)