How to Use Seedream 4.5 for Image-to-Image Editing: The Complete Guide

Seedream 4.5 by ByteDance is one of the most consistent image-to-image models on the market — and the one we reach for whenever an image needs to be edited rather than regenerated from scratch. Where text-to-image asks the model to imagine, image-to-image gives it an anchor: take this image, and apply this change.

This guide walks through the full image-to-image workflow on Skyvid, with prompt patterns, common pitfalls, and a few non-obvious tips.

When image-to-image beats text-to-image

Anytime you have a starting image that's already 80% right, image-to-image is the right tool. You spend 5 credits making it 100% right, instead of 50+ credits trying to regenerate from text and hoping the result happens to match.

Concrete cases:

• Outfit and accessory swaps — keep face, pose, scene; change clothes
• Background replacement — keep subject; swap setting
• Style transfer — same composition, different aesthetic (photoreal → anime, photo → illustration)
• Edit and extend — add objects, remove distractions, expand canvas
• Character variations — slight pose, expression, or lighting changes while keeping identity

For any of these, text-to-image asks too much of luck.

The basic workflow

1. Open Seedream 4.5 on Skyvid
2. Upload your source image (any common format — JPG, PNG, WebP)
3. Pick Image-to-image mode
4. Write your edit prompt
5. Set the edit strength (how much the model should change)
6. Generate

Each generation costs 5 credits. Below we cover what to put in the prompt and how to use edit strength well.

Prompt patterns that work

Image-to-image prompts are different from text-to-image prompts. You're describing the change, not the scene. A few patterns that consistently land:

1. Lead with the verb

✅ "Change the jacket to a black leather biker jacket"
❌ "A person wearing a black leather biker jacket standing in a city"

Restating the entire scene wastes attention. The image already shows the scene. Tell Seedream what's different.

2. Be specific about what stays

"Change the background to a snowy mountain landscape.
Keep the subject's pose, outfit, and lighting unchanged."

Image-to-image models sometimes change more than you asked for. Naming what's locked materially improves results.

3. Use named referents for multi-subject edits

"Change the woman on the left's hair to platinum blonde.
Do not change the man on the right."

For images with multiple subjects, position references (left/right, foreground/background, holding/wearing) are clearer than vague descriptors.

4. For style transfer, name the target style precisely

✅ "Restyle as a 1990s Studio Ghibli anime painting"
❌ "Make it anime"

"Anime" covers 30 years of distinct aesthetics. Be specific.

Edit strength: the underrated dial

Edit strength controls how aggressively Seedream rewrites the image. It's the most underused parameter.

• 0.2-0.3 (subtle): Lighting tweaks, color grading, minor details
• 0.4-0.5 (moderate): Outfit changes, expression tweaks, object additions/removals
• 0.6-0.7 (substantial): Background replacement, pose changes, style transfer
• 0.8+ (heavy): Major composition changes — face/identity may drift

Start at 0.5 for most edits. Dial down if the model changes too much, up if it doesn't change enough. Don't go above 0.8 if identity preservation matters.

Six common edits and the prompts that get them

Outfit swap

Prompt: "Change the outfit to a navy double-breasted suit with white shirt.
Keep face, hair, pose, and background unchanged."
Edit strength: 0.5

Background replacement

Prompt: "Replace the background with a softly blurred Parisian street at golden hour.
Keep the subject, lighting on subject, and pose unchanged."
Edit strength: 0.6

Photo-to-illustration

Prompt: "Restyle as an editorial pencil illustration with light cross-hatching
and a muted color palette. Preserve composition and proportions."
Edit strength: 0.7

Object removal

Prompt: "Remove the cup from the table. Restore the table surface naturally."
Edit strength: 0.4

Adding an object

Prompt: "Add a small black leather notebook on the desk to the left of the laptop."
Edit strength: 0.4

Expression change

Prompt: "Change the expression to a subtle warm smile. Keep face, head angle,
hair, and lighting unchanged."
Edit strength: 0.35

Pitfalls to avoid

1. Asking for impossible edits

If your source shows the subject from the front, asking to "show their back" requires the model to invent everything outside the frame. Image-to-video can do this; image-to-image gets confused. Either reframe the request, or use text-to-image for a fresh angle.

2. Overlong prompts

Image-to-image prompts work best at 15-40 words. Long prompts dilute attention. Strip filler ("a beautiful," "stunning," "high quality") — Seedream's defaults are already photoreal.

3. Vague style references

"Make it more artistic" tells the model nothing. Name the style: "1960s magazine editorial," "Wes Anderson symmetrical composition," "Caravaggio dark Renaissance."

4. Forgetting to lock identity

If you want the same person across multiple edits, add "preserve identity and facial features exactly" to every prompt. Without that anchor, identity drifts subtly across generations.

Seedream 4.5 vs alternatives

For image-to-image specifically:

For most workflows — and especially when the edited image will be animated next — Seedream is the safest default. Its output flows cleanly into video models like Kling 2.5 or Seedance 2.0.

The Seedream → Seedance pipeline

A workflow worth highlighting:

1. Generate or edit your hero still with Seedream 4.5 (5 credits per iteration)
2. Iterate until composition, lighting, and identity are exactly right
3. Animate with Seedance 2.0 for motion-heavy content, or Kling 2.5 for general-purpose motion

Total cost: ~25-50 credits for a polished animated hero shot. The same output via text-to-video alone would cost 2-3x and offer less control.

Try it

Open Seedream 4.5 on Skyvid — free tier includes daily credits. Upload an image and try one of the six prompt patterns above to see how it behaves.

FAQ

Does Seedream 4.5 preserve faces in image-to-image? Yes — at edit strengths ≤0.6, identity stays locked. Above that, add "preserve identity exactly" to the prompt.

What resolutions does Seedream 4.5 support? Native generation up to 2K. For 4K outputs, run the edited image through Topaz upscale (bundled in Skyvid's Studio tier).

Can Seedream edit text in images? For best in-image text editing, use Flux 2 Pro — it has stronger text rendering. Seedream is better at non-text edits.

How many edits can I chain? Unlimited. Each output can become the input for the next edit. For complex composites, chain 3-5 small edits rather than asking for everything in one prompt.

Will Seedream edits look right when animated? Yes — Seedream's aesthetic is specifically tuned to flow into video models. This is why we recommend it over Flux for image-to-video pipelines.