How to Use Generative Fill in Photoshop: A Complete Guide

Generative Fill is one of the most significant features Adobe has added to Photoshop in years. Powered by Adobe Firefly, it lets you add, remove, or extend image content using a simple text prompt — and the results blend seamlessly with the existing photo. If you've heard about it but aren't sure how it works or what affects the quality of your results, here's a clear breakdown.

What Is Generative Fill in Photoshop?

Generative Fill uses Adobe's Firefly AI model to generate new image content directly inside Photoshop. Unlike copy-paste editing or manual cloning, it synthesizes entirely new pixels that match the lighting, texture, perspective, and color palette of your existing image.

You can use it to:

• Add objects that weren't in the original photo
• Remove unwanted elements without leaving visible artifacts
• Extend a canvas beyond its original borders (sometimes called Generative Expand)
• Replace backgrounds or swap out specific areas with something new

The feature is non-destructive by default — generated content appears on its own Generative Layer, so your original image is always preserved.

What You Need Before You Start

Not every version of Photoshop includes Generative Fill. Here's what to check:

• Photoshop version: Generative Fill was introduced in Photoshop 24.5 (mid-2023). You need a current Creative Cloud subscription and an up-to-date installation.
• Adobe account and internet connection: Firefly processing happens in the cloud, so an active connection is required. Results aren't generated locally on your machine.
• Generative credits: Adobe allocates a set number of generative credits per month depending on your Creative Cloud plan. Each generation (including variations) consumes credits. Once credits run out, generation is either paused or limited until the next cycle.

How to Use Generative Fill: Step by Step

1. Make a Selection

Generative Fill works within a selection. Use any selection tool that fits your goal:

• Rectangular Marquee or Lasso for rough areas
• Object Select or Quick Select for isolating subjects
• Select Subject for full-subject isolation

The quality and shape of your selection directly influences how well the generated content integrates. A sloppy selection often produces awkward edges.

2. Open the Contextual Task Bar

Once you have a selection, a floating Contextual Task Bar appears near the bottom of your canvas. Click Generative Fill. This opens a small prompt field.

If the task bar isn't visible, go to Window > Contextual Task Bar to enable it.

3. Enter a Text Prompt (or Leave It Blank)

Type a description of what you want to generate — or leave the field empty.

• With a prompt: Photoshop generates content matching your description. Be specific about style, subject, and context. "Stone wall with ivy" will give very different results than "modern glass window."
• Without a prompt: Photoshop attempts to fill the selection based purely on surrounding context. This works well for removing objects or filling neutral areas like sky or ground.

4. Click Generate

Photoshop sends the request to Adobe's Firefly servers and returns three variations by default. These appear as options in the Properties panel under the Generative Layer.

You can scroll through variations, generate new ones, or accept one as your working result. Each additional generation round consumes more credits. 🎨

5. Refine or Iterate

Generated results aren't always perfect on the first try. Common refinement approaches include:

• Adjusting the selection boundary and regenerating
• Rewording your prompt to be more or less specific
• Using the Eraser or a layer mask on the Generative Layer to blend edges manually
• Combining multiple generative fills in the same image

Factors That Affect Your Results

Generative Fill doesn't behave identically for every user or every image. Several variables shape what you get:

Generative Fill vs. Generative Expand

These are related but distinct:

• Generative Fill operates inside your existing canvas, replacing or adding content within a selection.
• Generative Expand extends the canvas itself outward — useful when you need more space around a subject, want to change aspect ratio, or need to reframe a composition.

For Generative Expand, use the Crop tool, drag the canvas beyond the current image boundary, and select Generative Expand from the task bar.

What Generative Fill Doesn't Do Well 🔍

Understanding the limits helps set realistic expectations:

• Precise text generation inside images is still unreliable — Firefly often distorts letters or words
• Highly specific real-world objects (a particular car model, a specific person's face) won't reproduce accurately
• Very small selections can produce blurry or incoherent content
• Hands and fine details at close range often require manual cleanup after generation

Results also vary based on how well the prompt aligns with what Firefly's training data supports. Abstract or niche subjects tend to produce less consistent outputs than common subjects like landscapes, skies, furniture, or generic people.

How Skill Level Changes the Experience

Generative Fill has a low barrier to entry — anyone can make a selection and click generate. But the gap between beginner results and experienced results is significant.

Someone new to Photoshop may find the basics work well for simple object removal or background extension. A more experienced editor will combine Generative Fill with precise masking, blending modes, manual retouching, and layered adjustments to produce results that are difficult to distinguish from the original image.

The tool amplifies what you already know how to do in Photoshop. Your existing comfort with selections, layers, and compositing determines how much control you have over the final output — and how much cleanup work your generations typically require.