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AI Image Upscaler

Model:

Drop an image to upscale

JPG, PNG, WebP up to 10MB

Preview
~1,500 tokens per image
Upscaled result
Download
Advanced options
Result
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Want better results? Premium models (GPT-5, Claude, Gemini) deliver higher quality.View Plans

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Add resolution and detail to small or low-quality images. Standard runs on the FLUX.2 Flex free pool; premium uses FLUX.2 Pro for higher-detail rebuilds.

How to Use AI Image Upscaler

1
Open AI Image Upscaler

Open AI Image Upscaler on Rewind.ai. No account needed to start.

2
Add your input

Enter your text or upload a file, then set any options AI Image Upscaler offers.

3
Get the result

AI Image Upscaler runs on our own GPU servers and returns a result in seconds. Download it, copy it, or share the link.

Use this tool via API

Call this tool straight from your own scripts. The endpoint follows the OpenAI REST format and signs requests with a bearer token, so client libraries you already use keep working. You are billed the same token rate as the web app.

API DocumentationGet API Key
curl -X POST https://api.rewind.ai/v1/images/generations/ \
  -H "Authorization: Bearer sk-rewind-..." \
  -H "Content-Type: application/json" \
  -d '{"model": "black-forest-labs/flux.2-flex", "image": "@photo.jpg", "scale": 4}'

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AI Image Upscaler FAQ

AI Image Upscaler on Rewind.ai is a free AI tool. There's no charge and no sign up needed to start.

Yes. You get 2,500 free tokens per day to use AI Image Upscaler and every other tool on Rewind.ai. A free account raises that to 5,000 tokens/day. You can buy more starting at $1.

AI Image Upscaler runs open-source AI models on our GPU servers. Send your request and the result comes back in seconds.

No. You can use AI Image Upscaler right away without signing up. A free account doubles your daily usage to 5,000 tokens and saves your history.

Anonymous users get 2,500 tokens/day. Free accounts get 5,000 tokens/day. Tokens reset every 24 hours. Each generation costs ~100-5,000 tokens depending on the operation.

Your data is processed on our servers and isn't stored permanently unless you choose to save it. We don't sell or share it.

Yes. Content from AI Image Upscaler is yours to use for personal or commercial work. The AI models we run are commercially licensed.

AI Image Upscaler matches the quality of paid services because it runs the latest open-source AI models. The difference is you don't pay per use.

AI Image Upscaler runs open-source AI models including Qwen 2.5, FLUX and Whisper. We update to newer models as they ship.

Yes. AI Image Upscaler works in any mobile browser, and the layout adapts to your screen size.

Sign up for a free account to get 5,000 tokens/day, double the anonymous limit. Or buy token packs starting at $5 for 200,000 tokens. See /pricing/ for all options.

Yes. After you generate content, you can download it, copy it, or share it via a unique link. Signed-in users can also view their generation history.

Sign up free for 10,000 tokens

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