Welcome on Board

This is VAS's operating manual and feature dictionary.
Scroll down through "Getting Started → Core → Advanced";
the left menu stays with you—click any section to jump.
Ctrl+F search works too.
This is VAS's operating manual and feature dictionary.
Scroll down through "Getting Started → Core → Advanced";
tap the breathing light in the top right to jump to any section.
GETTING STARTED

Opening VAS for the first time

After downloading from the App Store and opening VAS, you'll see a fresh floating toolbar on your desktop. It stays where you place it—drag it freely.

VAS floating toolbar — Mac screenshot annotation tool

If the toolbar takes up too much space and you want it smaller—the breathing light mode is off by default. Turn it on manually in the toolbar's "Keyboard Shortcuts".

VAS 呼吸燈——120×6px 懸浮指示條,點擊即召喚工具列

VAS also lives in your macOS menu bar, shaped like a bottle in the top-right corner of your screen.

VAS 在 macOS 選單列上的位置——右上角瓶子
MENUBAR · Top right—VAS and Claude stand ready side by side.
Want VAS to disappear completely?

Click the bottle in the top-right menu bar (left-click) to summon or fully hide the desktop toolbar—we've thought of everything for desk minimalists.

VAS remains on standby in your menu bar.

Permissions & privacy

When VAS takes its first screenshot, macOS will request screen recording permission—this is required of all screenshot tools on macOS. If you declined, go to System Settings → Privacy & Security → Screen Recording, enable VAS, then reopen it.

Every screenshot, every OCR-recognized word, every QR code—processed entirely on your machine. Nothing uploaded, analyzed, or learned from. VAS has no server.

Taking your first screenshot

Press the VAS icon in the Dock or click the bottle in your menu bar—wherever VAS is, it appears before you, toolbar fully extended.

Choose a screenshot mode (full screen ⌘^1, window ⌘^2, rectangle ⌘^X), frame what you need—VAS brings it into the editor so you can continue weaving what words alone cannot hold.

Done editing? Drag it out to any window or document.

Three seconds. That's all.

CORE

One breathing light. One keystroke away.

When you're not using VAS but want it small and ready, turn on breathing light mode.

The toolbar collapses into a single 120×6px glimmer. Quiet. Unobtrusive. Waiting.

When you need it:

  • AllDrag an image near—the toolbar opens like a Venus flytrap, catches what you're dragging. Release, and the image goes straight into the editor. If you were editing something else, it tucks that away and continues.
  • Tauri onlyCopy a URL nearby—the light unfolds, toast appears: "Found ⟨URL⟩—click to capture." One click. Screenshot begins.
  • Tauri onlyCopy an image from your browser—toast asks "paste image?" You confirm. Straight to the editor.
Summon

If you tuck VAS into a corner of your desktop and forget where it is—we know the breathing light is genuinely subtle—

Click the VAS icon in your Dock. Wherever it is, it unfolds into the toolbar, waiting for you.

Capture Toolbar

The floating toolbar that lives on your desktop

VAS Mac 截圖工具浮動工具列

Fullscreen

Capture the entire screen and open it directly in the editor.

Window

Click a window to capture only that window's area.

Rectangle

Drag to select any rectangular region to capture. Frame a QR Code directly to auto-scan and reveal its content.

Delay

Set a 1–3 second delay to capture tooltips, dropdowns, and other transient UI states.

Open

Open an existing image from disk, or create a new canvas at a custom size.

Whiteboard

Open a blank canvas to build visuals from scratch.

Batch

Drop multiple images to convert them all at once to JPG, PNG, WebP, and more — with watermark and resize support.

Max 100 images per batch, 20mb per file

Help

Show keyboard shortcuts and link to this user guide.

Editor Interface

The second main space after a screenshot. The editor is divided into four operational zones:

VAS screenshot editor — annotation tools, OCR privacy masking and export
EDITOR · four operational zones.
  • Main Tool Menu——The vertical toolbar on the left. Select a tool to switch the canvas interaction mode. The active tool is highlighted in blue.
  • Property Options Panel——The top toolbar. Updates dynamically based on the selected tool — adjust colour, stroke width, opacity, line style, and more.
  • Floating Export Button——The floating button in the bottom-right corner. Drag it to reposition for left- or right-handed use. When finished, drag it to any target app to export. Tauri also offers a dedicated Sharesheet.
  • Status Bar & Smart Guides Toggle——The status bar in the bottom-left corner. Displays current zoom level and canvas size, with a toggle to enable or disable smart magnetic snapping.

All annotation tools at a glance — keyboard shortcut in parentheses

Select

SelectV Box SelectM

Draw

PenP LineL RectangleR FillB

Annotate

TTextT NumberN StampU Mosaic / BlurX

Privacy & Masking

OCRG Privacy MaskK

Canvas

Zoom In⌘= Zoom Out⌘- Fit to Window⌘0

Layout

CropC ResizeS Extend CanvasE Overlay ImageO One-click Template

Other

Undo⌘Z Redo⌘⇧Z

Export

When you're done editing, VAS gives you four exits:

  • Drag out—pull the image straight from the editor to your desktop, Finder, Slack, anywhere that accepts images. No saving, no dialogs. Drag and it's gone.
  • Copy to clipboard—press ⌘C, image goes to your clipboard, ⌘V it anywhere.
  • Tauri onlyShareSheet—macOS native share panel. AirDrop, Messages, Mail, social media.
  • Save—JPG / PNG / WebP / GIF / BMP / TIFF / PDF.
ADVANCED

OCR & QR Code

A screenshot doesn't always mean you're editing.

OCR · Text recognition

Recognized text goes straight to your clipboard by default. After the screenshot, ⌘V and paste anywhere.

Tauri onlyFor supported language markets, OCR applies localized privacy masking

It recognizes local ID numbers, credit card numbers, and phone formats, applying appropriate handling during recognition.

QR Code · Scan

VAS decides what to do based on how much of the QR Code your frame contains:

  • Fully framed—treated as intentional scanning. Opens the link directly.
  • Loosely framed (partial)—asks you first: "Open this link?"
  • Background element—no action. Screenshot goes straight to the editor.

Keyboard shortcuts

Built-in editor shortcuts, organized in four groups:

Tool switching
選取工具V
框型選取M
筆型工具P
線條工具L
矩形框R
色塊B
文字工具T
編號標記N
符號印章U
馬賽克/模糊X
OCR 文字辨識G
隱私遮蔽K
裁切C
調整大小S
延伸畫布E
疊入圖片O
Canvas
放大 =
縮小 -
適合視窗 0
平移畫布Space + 拖曳
切換磁吸對齊\
Edit
撤銷 Z
重做 Z
複製 C
貼上 V
複製最終影像 C
全選 A
刪除選取物件Delete /
Object
15° 鎖定旋轉Shift + 旋轉
等比縮放Shift + 拖曳角落
跳過磁吸Alt + 拖曳
微調 1 px
微調 10 pxShift
結束折線繪製Double-click

Custom settings

VAS intentionally offers few settings because we believe good tools get defaults right. What you can adjust:

  • Show / hide desktop toolbar—left-click the bottle in the menu bar.
  • Breathing light toggle—off by default. Enable it manually via "Keyboard Shortcuts" in the toolbar.
  • Tauri onlyCustom keyboard shortcuts—remap any shortcut to your preferred combination with the paid version.

Key acceptance rules

F1 … F12 F keys (no modifier needed)
⇧F5、⌘⌃A Combinations with modifiers
A、1、X Bare letters or numbers
⌘Q、⌘W、⌘H、⌘, System-reserved shortcuts
單獨 ⌘ / ⌃ / ⌥ Modifier keys alone

Troubleshooting & edge cases

No permissions granted — VAS doesn't respond
macOS will show a system prompt. Follow it to System Settings → Privacy & Security → Screen Recording, enable VAS, then reopen VAS. This is a hard macOS requirement — VAS cannot bypass it.
I put VAS in a corner of the desktop and can't find it
The breathing light is only 120×6px, so it's genuinely easy to lose. Click the VAS icon in the Dock—wherever it was, it'll appear in front of you and expand into the toolbar. Or just left-click the bottle in the menu bar to hide the desktop toolbar entirely, and use right-click for everything after that.
Web screenshot captured a login page
Web screenshot opens a background browser instance to capture the page—that instance has no login state. For pages requiring authentication, we currently recommend a browser extension like FireShot.
Dual-display behavior
Dual-display scenarios are specifically optimized. Full-screen captures the screen where your cursor is; delayed screenshots also use cursor position to determine the target display. If you encounter unexpected behavior, please let us know.
Can I customize keyboard shortcuts?
Yes, in the paid version. The free version includes three screenshot shortcuts: ⌘^1 / ⌘^2 / ⌘^X.