Convert color palettes between formats

Convert ASE and GPL files for free

Choose an ASE or GPL palette, or drag it into the converter. The tool automatically identifies the file format and converts it to the other, preserving the swatch colors and names supported by both formats.

Everything happens locally in your browser. Your palette isn't uploaded, stored, or sent to a server.

You can even disconnect from the internet after loading the page and the converter will continue to work. Its source code is available under the MIT license, so you can inspect how your files are handled.

View the open-source ASE/GPL converter →

Open existing palettes. Export wherever you need them.

Suisai opens four common palette file formats directly:

• ASE — Adobe Swatch Exchange: used by Adobe applications and supported by other design tools.
• ACO — Photoshop Swatches: open and edit existing Photoshop swatch collections.
• GPL — GIMP Palette: used by GIMP and supported by applications such as Inkscape.
• CLR — macOS Color List: the native format used by the macOS system color picker.

ASE, GPL, and CLR palettes can be edited and saved back in their original formats. ACO palettes can also be opened and edited, but changes must be saved as ASE, GPL, or CLR.

For use elsewhere, Export supports thirteen formats:

Keep the names you've already given your colors

A palette is more useful when its swatches have meaningful names. Suisai preserves existing color names when opening and editing supported palette files, and carries those names into exports wherever the destination format supports them.

For unnamed colors, Suisai can suggest names from a collection of 31,914 named shades, matched using OKLab. You can replace those suggestions with your own names at any time.

When exporting code or stylesheets, Suisai converts color names into usable identifiers and handles duplicates, helping keep your output organized and consistent.

Edit the original or export a new copy

Opening a palette in Suisai doesn't require converting or moving it. ASE, GPL, and CLR files can be edited and saved back to their original locations, while Save As lets you choose a different location or supported palette format.

When you need a separate file for another application, use Export to generate it without changing your working palette. You can also drag a complete palette from its window into Finder or another destination, using your last-used export settings.

For larger collections, Suisai's Palette Library can index your existing folders without importing them into a proprietary database. Your files stay where you choose, while their colors become searchable and reusable across projects.

More ways to work with your palettes

Converting files is only one part of working with color. Suisai also lets you organize your existing collections, edit individual swatches, and use your colors in design and development projects.

• Manage your palette Library →Find and reuse colors across existing palette files and watched folders.
• Build and edit palettes →Open existing palettes, refine individual colors, and create new collections.
• Take your palettes into code →Export named colors into stylesheets, application code, and other formats.
• Check color contrast →Every pair in a palette graded against WCAG 2.2, in the browser.

Your palettes, ready for wherever you work.

Open, edit, and convert existing palette files in one native macOS application. Preserve your colors and names, export into thirteen different formats, and keep your collections searchable without moving them into a proprietary database.

One purchase. No subscription. No account or analytics.

If Suisai isn't right for you, a full refund is available within 30 days for direct purchases via Paddle. No reason needed.

macOS 14 or later · Universal · One-time purchase