Lumoshot - Screenshot Capture & Annotation

Capture, annotate, redact, and copy polished screenshots locally. No account, no upload.

Lumoshot is a screenshot annotation tool that lets you capture, annotate, redact, and copy polished screenshots — all locally, without any account or upload. Stop wasting time writing long text explanations. Add arrows, spotlights, step numbers, click icons, and speech bubbles in seconds. Hit Cmd+C and paste directly into Slack, Notion, GitHub, or any tool you use. KEY FEATURES 🔦 Spotlight Dim the entire screen and highlight only what matters. Instantly guide your viewer's eye — no text needed. 🖱️ Click Icon Place a cursor icon + radial lines to show exactly where to click. Communicate "click here" without typing a single word. 💬 Speech Bubble A text callout with a movable tail. Point precisely at any button or field. 🔢 Step Numbers Auto-incrementing numbered badges (1, 2, 3…). Perfect for documenting flows and tutorials. 💧 Blur / Redact One-click mosaic to hide personal info, API keys, or anything sensitive before sharing. 🖋️ Arrows, Rectangles, Text All the essential annotation shapes, with full color and stroke controls. NON-DESTRUCTIVE EDITING Every shape stays editable. Reorder Z-index, resize, recolor, or delete at any time — nothing is baked into the image until you export. KEYBOARD-FIRST WORKFLOW Left-hand shortcuts (V = select, A = arrow, P = pen, L = spotlight, C = click icon…) keep your right hand on the mouse. Inspired by pro tools like Figma and VS Code. HOW IT WORKS 1. Capture — Full screen, visible area, or drag to select a region 2. Annotate — Add shapes and effects with keyboard shortcuts 3. Share — Cmd+C to clipboard, then paste anywhere. Or Cmd+S to save. Everything runs locally in your browser. No data leaves your machine.