Annotate edits & reference images

Two ways to control an image without re-rolling on Sunra: annotate-and-edit a specific region (local inpainting), and steer results with reference images and @ mentions.

Two features give you fine control without starting over: annotate-and-edit changes a specific part of a result, and reference images steer a generation toward a look, subject, or composition. Together they're how you go from "close" to "exactly right."

The image generator's prompt bar — the + button attaches reference images, which you can then mention with @ inside the prompt.
The image generator's prompt bar — the + button attaches reference images, which you can then mention with @ inside the prompt.

Annotate-and-edit a region

Click any image result to open a full-screen editor. Mark the area you want changed, type an instruction, and Sunra regenerates just that part — the rest stays put. The toolset:

  • Select, Brush, and Rectangle — define the region to edit.
  • Text — add or place words.
  • Eraser — remove from the marked area.
  • A color picker for the brush and text.

Worked example. You generated a portrait you like, but the shirt is the wrong color and there's a stray cup on the table:

  1. Brush over the shirt → instruction: *"make the shirt forest green."* Regenerate.
  2. Rectangle around the cup → instruction: *"remove the cup, fill with the wood table."* Regenerate.

Two small passes, and everything you already liked — the face, the pose, the light — is untouched.

Note
Some models edit without a mask at all. Nano Banana Pro precision editing takes a plain instruction ("change the background to a beach") and makes a surgical, localized change while keeping everything else consistent — handy when the area is awkward to paint. GPT Image 2 also edits in place from a text instruction.

Annotate vs re-prompt

  • Annotate when the image is right except for one area — a detail, an object, a word.
  • Re-prompt when the whole composition or style is off and you want a fresh take.

Editing preserves the parts you already liked, so it's usually the cheaper, faster path once a generation is close.

Reference images and @ mentions

Attach up to 10 reference images — upload, paste, drag, or "use as reference" from the gallery — to guide style, composition, or a specific subject.

While writing the prompt, type @ to point at a specific attached image:

Dress @Image1 in the jacket from @Image2, in the setting of @Image3.

It's the cleanest way to combine several references into one shot, and it removes the ambiguity of "the blue one" when you have multiple images attached.

Tips

  • Keep edit instructions small and specific — one change per pass beats a paragraph of changes.
  • For references, attach images that are sharp and on-message; a cluttered reference muddies the result.
  • Stack the two: generate with references, then annotate-and-edit the last detail.

For the broader image workflow and model choices, see Image generation basics and Prompting for images. For standalone fixes like background removal or upscaling, see Editing & cleanup tools.

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