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  • Image Upscale

RealESRGAN x4

Upscales images with AI enhancement, increasing resolution up to 4x while preserving textures and details.

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Sample Outputs

Real outputs generated with RealESRGAN x4 on deAPI.

“A monarch butterfly on a purple flower, macro photography, wing detail visible” “A monarch butterfly on a purple flower, macro photography, wing detail visible”

“A detailed stone gargoyle on a Gothic cathedral, weathered texture, architectural detail photography” “A detailed stone gargoyle on a Gothic cathedral, weathered texture, architectural detail photography”

“A tiger walking through tall grass, wildlife photography, detailed fur texture” “A tiger walking through tall grass, wildlife photography, detailed fur texture”

“A plate of sushi with detailed fish texture, close-up food photography, sharp details” “A plate of sushi with detailed fish texture, close-up food photography, sharp details”

“An old brick building facade with fire escape, urban architecture, fine details” “An old brick building facade with fire escape, urban architecture, fine details”

“A medieval castle on a hilltop at sunset, landscape photography, fine stone detail” “A medieval castle on a hilltop at sunset, landscape photography, fine stone detail”

“A vintage pocket watch with intricate engravings, product photography, fine metalwork detail” “A vintage pocket watch with intricate engravings, product photography, fine metalwork detail”

“Portrait of a woman with green eyes and red lipstick, studio lighting, beauty photography” “Portrait of a woman with green eyes and red lipstick, studio lighting, beauty photography”

Capabilities

What you can do with RealESRGAN x4.

Image Upscale

Upscale images with AI-powered enhancement. Increase resolution up to 4x while preserving textures and fine details.

Technical Specifications

Resolution

128–2048 x 128–2048 px

How to use in deAPI

Integrate RealESRGAN x4 into your app with a single API call.

POST https://api.deapi.ai/api/v1/client/img-upscale

curl · deAPI img-upscale 

curl -X 'POST' \
  'https://api.deapi.ai/api/v1/client/img-upscale' \
  -H 'accept: application/json' \
  -H 'Authorization: Bearer YOUR_API_KEY' \
  -F 'model=RealESRGAN_x4' \
  -F 'image=@/path/to/file'{
    "model": "RealESRGAN_x4",
    "image": "BASE64_OR_URL"
}

Tip: The API returns a request_id. Use webhooks (recommended) or poll GET /request-status/{request_id} for results.

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Frequently Asked Questions

Upscales images with AI enhancement, increasing resolution up to 4x while preserving textures and details.
RealESRGAN x4 increases image resolution by 4× using AI that intelligently fills in detail. It preserves textures, edges, and fine details rather than simply interpolating pixels. A 512×512 image becomes 2048×2048.
Input images should be between 128×128 and 2048×2048 pixels. The output will be 4× larger in each dimension — for example, a 512×512 input becomes 2048×2048.
Sign up for a free deAPI account at https://deapi.ai/register and get $5 in free credits — no credit card required. Then open the playground, select RealESRGAN x4, and generate your first result in seconds.
deAPI is pay-per-use with no subscriptions or monthly fees. Check the pricing page at https://deapi.ai/pricing for current per-generation rates.
Yes. RealESRGAN x4 is available via the deAPI REST API. Submit a request, receive a request ID, and poll for the result. See the API documentation at https://docs.deapi.ai for code examples in Python, Node.js, and cURL.
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RealESRGAN x4 for Free

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