Composited
#808080
What is the Alpha Compositor?
The Alpha Compositor is a free online color tools from Markvibe. Composite foreground over background by alpha. It runs entirely in your browser — your data never gets uploaded — and works on desktop, tablet and mobile with no sign-up.
Reviewed by The Markvibe Team · Last updated 2026-06-28
Example
A worked example so you know exactly what to expect.
Input
(your input goes here)
Output
(the Alpha Compositor runs in your browser and shows the result instantly)
How to use Alpha Compositor
- 1Open the Alpha Compositor above on MarkVibe — it loads instantly with no sign-up.
- 2Enter or paste your input into the Alpha Compositor field.
- 3Tweak any options to control exactly how Alpha Compositor produces the result.
- 4Click the action button — Alpha Compositor runs locally in your browser and shows the result.
- 5Copy the output to your clipboard or save it, then share the Alpha Compositor link with anyone who needs it.
Why use our Alpha Compositor
- ✓ 100% free Alpha Compositor — no sign-up, no watermark, no hidden limits
- ✓ Runs entirely in your browser so your data never leaves your device
- ✓ Blazing-fast results — built for speed by Markvibe
- ✓ Mobile-friendly: use Alpha Compositor on phone, tablet, or desktop
- ✓ One of 184+ color tools utilities under one roof
- ✓ Privacy-first: no tracking of inputs, no accounts, no ads in the tool area
Alpha Compositor — frequently asked questions
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