Exact transparent overlays for TikTok LIVE

Cut the window. Keep every other pixel.

This tool changes alpha values inside one exact rectangle. It does not redraw faces, rewrite text, invent dimensions, or upload your images anywhere.

SELF_CONTAINED No API key $0 per image No AI model

Browser editor

Build the transparent webcam window

Files stay on this device

Load the overlay

The overlay is the only source of output pixels. PNG is required for lossless preservation.

Choose overlay Single-frame PNG

No overlay loaded.

Load a reference

Optional. Draw the webcam box on a screenshot and copy its geometry.

Choose reference Any browser-readable image

No reference loaded. Draw directly on the overlay instead.

Map the rectangle

When dimensions differ

The tool reports the scale and both coordinate sets.

Source

Overlay

Upload an overlay to begin.

Drag to draw. Use the coordinate fields below for exact values.

Optional guide

Reference

Optional reference screenshot.

A reference can have different dimensions from the overlay.

Live result

Transparent output

Waiting

The verified output appears here.

Checkerboard pixels are genuinely transparent in the preview.

Pixel geometry

Transparent rectangle

Coordinates use x, y, width, height. Right and bottom edges are exclusive.

X Y Width Height

Load an overlay to set the rectangle.

Required validation

RGBA export report

Canvas—

Transparent box—

Interior alpha—

Full alpha—

Outside changes—

PNG formatNot encoded

ResultWaiting

Machine-readable report

{}

Independent check

Transparent PNG verifier

Drop an exported PNG here. The verifier decodes it separately and checks its actual PNG color type and alpha channel.

Choose PNG to inspect Nothing is uploaded

Inspection result

No PNG selected.

What this tool does

Deterministic means boring in the best possible way.

Changes

Only alpha bytes inside the selected rectangle.

Preserves

Every RGBA channel outside the rectangle and every RGB channel inside it.

Requires

A modern browser. No server, login, API key, or AI model.

Privacy

File processing happens in browser memory on your device.

Limits

8-bit single-frame PNG overlays up to 30 million pixels. References may be PNG, WebP, or JPEG.

Version 1.0.0 · Updated August 4, 2026 · Core classification: SELF_CONTAINED · Source on GitHub