Guide · 01 — Toolbar

Mac screenshots start at this toolbar

That floating toolbar on your desktop is where everything in VAS begins — four capture modes, plus the color picker, ruler, delay and batch, all live here. When you're not using it, it folds into a single breathing light.

Toolbar

Your floating gateway to capture and tools on the desktop

延遲截圖
Batch

Click any button on the toolbar · its description appears below

Fullscreen

Capture the whole screen and drop straight into the editor. Multi-display capture supported.

Window

Pick the mode, then click any window to capture just that window.

Region

Drag to select any rectangular area and capture it. Frame a QR Code directly and VAS scans it and shows the contents.

Long Screenshot Tauri only

Automatically detects the frontmost Google Chrome window, scrolls to capture the full page and stitches it together — even clearing repeated back-to-top buttons along the way.

＊On first use, grant VAS permission under System Settings → Privacy & Security → Accessibility.

Color Picker Tauri only

Eyedrop the exact color code of any pixel on screen; frequently used colors are saved to Recents and sync with the editor's palette.

Ruler Tauri only

Drag a box that snaps to edges to measure pixel dimensions, or click two points for point-to-point distance. Measurement lines can be selected, deleted, undone and redone, and are baked into the image on export.

Open

Open an existing image from your Mac.

All versionsPNG / JPG / WebP / TIFF / GIF / SVG，Tauri onlyBMP

Canvas

Open a blank canvas and build an image from scratch, with transparent-layer support.

More

Holds delayed capture and batch conversion. Set a delay of 0–8 seconds to catch fleeting states like tooltips, hovers and dropdowns.

Batch: up to 100 images at once, 20 MB per file.

Help

Shows the keyboard-shortcut overview, with links to the user guide and a breathing-light toggle.

Color Picker

Pick the color of any point on screen; switch and copy HEX / RGB / HSL in one click. Frequent colors are saved to Recents and stay in sync with the editor's palette.

rgb(49, 49, 48)
HEXRGBHSL
Recent
Ruler

Drag a box that snaps to edges to measure pixel dimensions, or click two points for point-to-point distance. Measurement lines can be selected, deleted, undone and redone.

① Snap guides · as the cursor nears an object or text edge, dashed crosshairs surface and the endpoint snaps to the edge — no shaky hand-aligning.
② Line · Diagonal · Box — whatever you need
Line · single axis
40 px Near horizontal / vertical → auto-locks to pure H or V
Diagonal · length + H/V components
V 42 H 40 Line 58
Box · measure a frame or text width & height
Page heading 190 × 33 pt
③ Combined examples
Frame & text size
354 × 319 pt
Spacing between frames
356 pt
Batch Convert

Convert many images to one format in a single pass — and while converting, resize them uniformly, add a watermark, and choose where they save. Made for processing large batches of screenshots or assets.

Add files

  • Drag images into the window, or click “Select files” to pick them; you can also “+ Add files” to keep adding.
  • Up to 100 images per run.

Supported formats

  • Reads — PNG, JPG/JPEG, WebP, GIF, BMP, TIFF, SVG (vector art is rasterized inside the app).
  • Writes — PNG, JPG, WebP, GIF, BMP, TIFF — six formats. Tauri onlyBMP and TIFF are Tauri-only.
  • When writing JPG/WebP you can set quality (1–100%); if the batch contains SVGs you can set the SVG output width (which decides the rasterization resolution).

Uniform resize (optional)

  • Fix the width or the height to a set pixel value; the other side scales proportionally.

Watermark (optional · text and image can be used together)

  • Text watermark — enter the text (Chinese and Japanese supported), size, color, opacity, and a nine-grid position (corners / edges / center).
  • Image watermark (logo) — pick an image, set its width ratio (relative to the original), opacity, and nine-grid position, with a live preview.
  • Both share the margin setting; when both are on, text sits below and the image on top.

Save location

  • The same folder as the source files, or a folder you choose.
  • You can tick “Delete originals after converting” — the originals go to the Trash (still recoverable, not permanently deleted).
  • Progress shows image by image as it converts.

Breathing Light & Summon

When you're not using VAS but still want it standing by, small and quiet on your desktop, turn on breathing-light mode.

The toolbar shrinks to a single 120×6px sliver of light — understated, out of the way, quietly waiting for you.

滑鼠靠近 · 點一下召喚

At rest it's a 120×6px breathing light; hover and it gathers into a breathing orb, click and it springs open into the full toolbar. Five seconds after your cursor leaves, it quietly folds back into the breathing light — the whole desktop experience lives right here.

And when you need to reach for it:

  • All versionsDrag an image close — the toolbar opens like a Venus flytrap and catches the image you bring it. The moment you let go, the image drops straight into the editor; if you were already editing something else, it tucks that away and reopens the editor so you can keep going.
  • Tauri onlyDrag an image out to export — the editor collapses like a black hole, giving you the maximum desktop space and view to save or hand off. Drag in a single motion to any window / dialog / folder, however you like. The moment you let go, it reopens the editor so you can keep going.
  • Tauri onlyCopy an image from your browser — a toast pops up asking whether to “paste the image”; say yes and it drops straight into the editor. Or paste it into the editor directly with your own custom shortcut.
Summon

If you parked VAS in some corner of your desktop and forgot where it went —
we know the breathing light really is that subtle —

click the VAS icon in your Dock, and wherever it is,
it expands into the toolbar and waits for you to come to it.