Bookmarklets

Drag any button below to your bookmarks bar and you will have instant access to color tools on any website — no extension required.

What Is a Bookmarklet?

A bookmarklet is a small JavaScript program stored as a browser bookmark. When clicked, it runs on the current webpage — instantly adding color picking, palette extraction or contrast checking to any site. Bookmarklets do not require installation, do not access your data remotely, and can be deleted from your bookmarks like any other bookmark.

How to Install a Bookmarklet

Make sure your browser's bookmarks bar is visible (Ctrl/Cmd + Shift + B in most browsers).
Drag any button below directly onto your bookmarks bar.
Navigate to any website and click the bookmarklet to activate it.

Available Bookmarklets

Eyedropper on Any Page

Samples any color on the current page. Click the bookmarklet, then click any pixel to see its HEX, RGB and HSL values.

Eyedropper

Copy Page Background

Instantly copies the background color of the current page as HEX to your clipboard.

Copy BG Color

Open in OmniColor Picker

Sends the current page background color to the OmniColor color picker for deep analysis.

Open in Picker

Extract All Page Colors

Lists all unique background colors used on the current page, sorted by frequency.

Extract Page Colors

Check Text Contrast

Checks the WCAG contrast ratio of the current page's text against its background.

Check Contrast

Safety & Privacy

All OmniColor bookmarklets:

Run entirely in your browser on the page you are viewing
Do not send any data to any server
Do not track, log or store anything
Are fully visible in plain JavaScript — you can inspect them before installing
Can be deleted like any bookmark (right-click → Delete)

Browser Support

Bookmarklets work in all modern browsers: Chrome, Firefox, Safari, Edge, Opera. Some browsers block JavaScript bookmarklets on certain pages (like chrome://, about:, or content security policy-restricted pages) — this is by design and cannot be overridden.

Note: We do not currently ship official OmniColor browser extensions. Bookmarklets are our way of providing instant-access tools without the overhead of extension stores, permissions, or updates.