How to Cut Out Text with Channels and Build Gradients in Photoshop (Part 1)

Cut Type Out of Its Background, Then Build Color Behind It

This is part one of a two-part series. Here we’ll build the artwork in Photoshop — isolating a piece of type using Channels, then constructing a layered gradient background behind it — and export the pieces as PNGs. In part two we take those into After Effects and animate them into a looping GIF and MP4.

The technique that carries this is worth learning on its own: a channel-based selection produces a far cleaner cut-out of detailed type than any selection tool, and it takes about a minute.

Why Channels Beat the Selection Tools Here

Every RGB image already contains three grayscale images — the Red, Green and Blue channels — each showing how much of that color is present as light and dark values.

That means one of them is very likely to show your subject almost separated from its background already. Instead of tracing an edge by hand, you find the channel with the most contrast and let Photoshop do it. For lettering with fine detail this is dramatically better than any lasso or wand. Our guide to removing backgrounds in Photoshop covers the other approaches for comparison.

Finding the Right Channel

1. Open Window › Channels

   You’ll see RGB plus the three individual channels.

2. Click through Red, Green and Blue

   Look at each as a black and white image and ask one question: which one has the biggest difference between the subject and the background?

3. Pick the clear winner

   There always is one, and it changes per image. In this example Red shows the type and background at similar values — useless. Green separates them strongly. Blue is good but not as good. Green wins.

4. Duplicate that channel

   Drag it onto the new-channel icon at the bottom of the panel. Always work on the copy — editing an original channel changes the image itself.

Pushing the Contrast to Pure Black and White

The goal is unambiguous: subject pure white, background pure black. Anything gray becomes a partial selection, which is what produces soft or fringed edges.

With the duplicate channel selected, press Cmd/Ctrl + L for Levels. The eyedroppers are the fastest route — click the black-point eyedropper on a dark area and everything darker snaps to black. Click again on any remaining stragglers. Dragging the input sliders inward does the same job manually.

Push until the background is genuinely black and the type genuinely white, with no gray haze in between. There’s more on this in How to Master Adjustment Layers in Photoshop.

Turning the Channel Into a Selection

Hold Cmd/Ctrl and click the channel’s thumbnail, or click the dotted-circle icon at the bottom of the Channels panel. The marching ants appear.

One rule to remember: a channel selection always selects the light areas. White becomes selected, black becomes unselected, gray becomes partially selected. That’s why forcing the contrast first matters so much.

Switch back to the Layers panel with the selection still live.

Building the Stencil

Here’s a small piece of Photoshop behavior worth knowing: create a fill or adjustment layer while a selection is active and that selection becomes its layer mask automatically.

1. Add a Solid Color fill layer

   From the adjustments icon at the bottom of the Layers panel, or Layer › New Fill Layer › Solid Color. Choose black.

2. Hide the original layer

   You now have black type on transparency, with a perfect mask — and the original is no longer needed.

3. Invert the mask

   Click the layer mask and press Cmd/Ctrl + I. This flips it: the type becomes a hole and everything around it becomes solid.

That inversion is the whole trick. You’ve turned the text into a stencil — a solid card with letter-shaped holes in it. Anything placed underneath shows through the letters only. Which is exactly what makes the animation in part two work: nothing has to move except the layer behind the stencil.

Building the Gradient Background

With the stencil in place, everything below it is free to be as elaborate as you like.

1. Start with a solid color base

   Another Solid Color fill layer at the bottom — Aaron picks a purple-pink as a foundation. Turn the stencil back on and you can already see it through the letters.

2. Add a Gradient fill layer

   From the same adjustments icon at the bottom of the Layers panel, choose Gradient (or Layer › New Fill Layer › Gradient). Set the style to Radial and pick a foreground-to-transparent gradient so it blends into what’s beneath.

3. Reposition it by dragging on the canvas

   With the gradient dialog open, click and drag directly on the image to move the gradient’s center. The Scale slider makes it broader or tighter, and Reverse flips it inside out.

4. Duplicate it and change the color

   Cmd/Ctrl + J, double-click the copy, move it elsewhere on the canvas and give it a different hue. Two or three overlapping radial gradients in different colors produce far more interesting light than any single gradient.

Why fill layers rather than the Gradient Tool

You could paint gradients with the Gradient Tool onto normal layers. Don’t. A gradient fill layer stays live — double-click it at any point and you can change its colors, position, scale and style with nothing baked in.

That means you can build the whole composition roughly and then tune every color afterward while looking at the finished result, which is a completely different experience from committing to each choice as you go. The base solid color is editable the same way.

Exporting for After Effects

After Effects needs two flat files: the stencil (with real transparency) and the gradient background.

1. Hide everything except the stencil layer

   You’re exporting one element at a time.

2. File › Export › Save for Web

   The older dialog, and the most direct route to a transparent PNG.

3. Choose PNG-24 and check Transparency

   Both are required. PNG-8 will not hold a clean alpha channel, and without the Transparency box the letter holes fill with white — which destroys the entire effect.

4. Set the size

   Vector artwork can arrive enormous — over 8,000 pixels square here. 1080 × 1080 is right for social. You can resize in this dialog or beforehand via Image › Image Size.

5. Repeat for the gradient background

   Hide the stencil, show the gradient layers, export at exactly the same dimensions. The two files must match in size or they won’t line up in After Effects.

Where This Goes Wrong

Editing the original channel instead of a duplicate

Levels applied to a live channel changes the image itself. Always duplicate first.

Stopping while the channel is still gray

Gray means a partial selection, which shows up as soft or haloed edges on the type. Push Levels until it’s genuinely black and white.

Exporting PNG-8, or forgetting the Transparency checkbox

Either produces a file with white where the letters should be. PNG-24 with Transparency checked.

Exporting the two files at different sizes

They have to align exactly in After Effects. Same dimensions, both times.

Flattening gradients onto normal layers

Once painted, the colors are fixed. Fill layers stay editable to the very end, which is when you actually know what you want.

The Stencil Is the Idea Worth Keeping

Cutting type out with channels is useful. Inverting it into a stencil is the part that changes what you can do — because from that moment, anything you put behind it shows through the letters, and you never have to touch the type again.

Photographs, video, patterns, animated gradients: it all works the same way. Build the stencil once and the letters become a window rather than an object.

Quick Reference: Keys, Menus and Settings

• Find the channelWindow > Channels; drag the best one onto the new channel icon
• Black and whiteCmd/Ctrl + L, black point eyedropper on the background
• Load the selectionCmd/Ctrl-click the channel thumbnail
• Make the stencilBlack Solid Color fill layer, then Cmd/Ctrl + I on its mask
• Gradient backgroundGradient fill, foreground to transparent, Radial; Cmd/Ctrl + J to duplicate and recolor
• ExportFile > Export > Save for Web: PNG-24, Transparency checked, 1080 x 1080

No AI, no generative credits.