Free · No sign-up · Runs in your browser

Free tools for designers and developers

Check colour contrast, build favicons, make placeholders, pull palettes from images and create device mockups. Everything happens on your device. Nothing is uploaded.

Explore the tools How it stays private

Five tools, one calm place

Each tool does one job well and works the same way: add your input, see the result at once, copy or download.

LiveContrast CheckerEnter two colours and see at once whether they pass WCAG AA and AAA. When they fail, get the closest colours that pass, and preview them the way people with colour blindness see them.LiveColour Placeholder GeneratorExact-size placeholder images in any colour, named for you.LivePalette from ImageDrop an image, get a palette you can paste into code.LiveFavicon and App Icon GeneratorOne image in, every icon and the HTML snippet out.LiveDevice Mockup GeneratorPut a screenshot in a clean device frame in seconds.

Looking for images? Conversi converts and shrinks images and is live now.

Try a contrast check right here

Change either colour and the ratio updates at once. Like what you see? Open the same pair in the full Contrast Checker for fixes, colour-blindness previews and more.

Contrast ratio

Passes: AA normal text, AA large text, AAA large text, UI and graphics.

Text colour

rgb(65, 80, 245) · hsl(235, 90%, 61%)

Background colour

rgb(255, 255, 255) · hsl(0, 0%, 100%)

AA normal text4.5:1Pass
AA large text3:1Pass
AAA normal text7:1Fail
AAA large text4.5:1Pass
UI and graphics3:1Pass

Open in the Contrast Checker

See a palette in one glance

Pick a sample, then tap any colour to copy its code. Palette from Image does the same for your own picture, with scales and exports.

Tap a colour to copy its HEX code.

Pull a palette from your image

Free, private and quick

Nothing is uploaded

Your images and colours are processed in your browser. They never reach our servers, so there is nothing to leak and nothing to delete.

No account, no cookies

Open a tool and use it. We do not ask for an email address, set cookies or run advertising trackers.

Fast because it is local

There is no queue and no waiting for a server. Results update as you type, drag or drop.

How every tool works

Pick a tool
Choose the job: contrast, placeholders, a palette, icons or a mockup.
Add your input
Type a colour, drop an image or paste from the clipboard. Every tool has an example button to try first.
Copy or download
Copy the code with one click, or download the file or ZIP. Your result is yours to use anywhere.

Questions, answered

Are these tools really free?

Yes. There is no trial, no watermark and no limit on how often you use them.

Are my files or colours uploaded anywhere?

No. Everything runs inside your browser on your own device. Closing the tab clears it.

Do I need to create an account?

No. There is no sign-up, no email and no login.

Can I use the results in commercial work?

Yes. Placeholders, icons, palettes and mockups you make are yours to use in personal and commercial projects. Check the licence of any image you bring yourself.

Which tools are available now?

All five are live now: the Contrast Checker, the Colour Placeholder Generator, Palette from Image, the Favicon and App Icon Generator and the Device Mockup Generator. Conversi, our image converter, is live too.