App icon color themes.

Drop the app's ICO, apply the tone, download the PNG and pack it as an ICO; then put it in the app's resources or the shortcut's Change Icon.

Tone the base icon in a color per edition: blue for standard, gold for premium, violet for enterprise. The shape stays, the color says which is which.

Use the UI's own palette as the tone; the icon then reads as a preview of the software inside.

Tone every icon of the suite with one hex; different shapes share one color identity.

Yes. Gradients and shading keep their lightness; only the hue moves, so detailed icons stay detailed.

Orange or yellow for beta, grey for dev builds: a glance tells the versions apart.

Each pixel is read as hue, saturation and lightness; the tone's hue and saturation replace the pixel's and its lightness stays. Shading and highlights stay, so the icon keeps its shape and only its color changes.

Pick a preset (Sepia, Ocean, Violet, Teal, Sunset, Forest, Rose, Slate) or type any hex. The same hex gives the same result on every icon, which is how a set stays consistent.

The largest frame of the ICO is toned and the result is a PNG. Modern browsers take a PNG favicon as it is; for a favicon.ico or a Windows icon, pack it with the PNG to ICO tool.

No. The ICO is read and its frames decoded by JavaScript on your device; the page makes no request with your file. Load it, go offline and it still works.

No. The "App icon color themes" tool is free and opens without a sign-in, an account or an install.

Up to 100 MB per file, the limit the tool states under its drop area. A larger file is refused with a plain message instead of being decoded.

No, it takes one file at a time. If you drop or choose several, only the first is used; run the tool again for the next one.

The edit is written as a PNG because PNG stores every pixel exactly, with a full alpha channel, so the result can be edited again without a second round of loss.

No. The browser decodes the image and the tool writes a new file from its pixels, so camera EXIF, GPS position and text chunks in the original are not copied into the result. Keep the original file if you need them.

No. The result has the same width and height in pixels as the source.

Closest to the "App icon color themes" tool: ICO color tone changer, Windows icon recolor tool, Windows desktop theme icons, Desktop shortcut icon fade. Each opens on its own page, free and in the browser.

The "App icon color themes" tool is one of 37 in its group. The group's page, /tools/ico, lists them all.

The tool is free. Its interface is built from shadcn.io's own components (Button, Input, Slider and the rest of the registry under /ui), which come in React, Vue, Svelte and Solid. Pro adds the blocks and templates for the product around it.