How much does one API upscale cost?

Each successfully upscaled image costs 0.7 credit for supported 2x or 4x standard upscaling. Confirmed failed tasks return the reserved credit.

Can I process 1,000 to 2,000 images per day?

The current account limit is 2,500 tasks per UTC day with up to 20 active tasks. Queue work with controlled concurrency and contact support before relying on a larger daily workload.

Can one account have multiple API keys?

Yes. Create separate keys for applications or environments, then rotate or revoke each key independently. Usage and credits remain associated with the owning account.

Does the API support webhooks?

Customer webhooks are not available yet. Use the task status URL returned by the create request and poll with gradual backoff.

What happens if my request times out?

Retry the same logical request with the same idempotency key and identical parameters. The API returns the original task instead of creating a duplicate.

AI Image Upscaler API

Upscale images by 2x or 4x with one API

Send a public image URL, receive a task ID, and download a sharper result when processing is complete. No model deployment or GPU management required.

Get an API key Read the documentation

2x and 4x output
JPEG, PNG, and WebP input
Idempotent request retries

API price

0.7 credit

per successfully upscaled image. Failed tasks are refunded automatically.

Image upscaling that fits your backend

The API is designed for reliable server-to-server workflows instead of manual one-off uploads.

Asynchronous by default

Receive a task immediately and let image processing continue in the background.

Safe to retry

Reuse the same idempotency key after a timeout without creating another task or charge.

Clear task ownership

Every task is tied to the authenticated account, regardless of which of its API keys created it.

Failure-aware billing

Credits are reserved at submission, charged on success, and returned after a confirmed failure.

Built for repeatable image workflows

Use the same API contract across customer uploads, catalog pipelines, and internal media tools.

Ecommerce catalogs

Prepare sharper product photos for zoom views, marketplaces, and higher-resolution storefronts.

Creative asset pipelines

Upscale campaign graphics, generated artwork, and social assets before publishing.

Archive processing

Queue older or low-resolution image libraries and collect results through a consistent task API.

User-generated content

Add server-side enhancement to applications that receive images from customers or creators.

How the Image Upscaler API works

A three-step task model keeps slow image processing away from your application request thread.

01
Submit an image URL
POST a public HTTPS image URL, scale, output options, and a unique idempotency key.
02
Track the task
Use the returned status URL with gradual polling backoff until the task reaches a terminal state.
03
Store the result
Download successful output to your own storage instead of treating the delivery URL as a permanent archive.

Create your first upscale task

The create endpoint accepts a JSON body and returns a task immediately with HTTP 202.

Keep your API key on the server. Never expose it in browser or mobile application code.

Read the documentation

cURL

curl --request POST \
  --url https://www.upscayl.app/api/v1/upscales \
  --header "Authorization: Bearer $UPSCAYL_API_KEY" \
  --header "Content-Type: application/json" \
  --header "Idempotency-Key: catalog-image-1842" \
  --data '{
    "image_url": "https://example.com/product.jpg",
    "scale": 4,
    "face_enhance": false,
    "output_format": "png"
  }'

Supported inputs and task limits

Limits protect shared processing capacity and keep batch integrations predictable.

Input formats: JPEG, PNG, WebP
Input file: Up to 20 MB
Scale: 2x or 4x
Create requests: 60 per minute
Active tasks: 20 at a time
Daily tasks: 2,500 per UTC day

Simple credit billing

The API price is lower than the standard browser workflow and is the same for supported 2x and 4x tasks.

0.7 credit is reserved when a task is accepted.
A successful result charges exactly 0.7 credit.
A confirmed failed task returns the reserved credit.
An idempotent retry does not create another charge.

View credit plans

Image Upscaler API questions

Practical answers for planning a production integration.

Use the browser tool for manual images or the API for automated server-side processing.

Upscale images in your browser

Use the interactive web tool when you want to upload, compare, and download an image manually.

Open the image upscaler

Integrate the REST API

Read endpoint details, request parameters, response examples, retry guidance, billing states, and error codes.

Read API documentation

Ready to automate image upscaling?

Create a key and connect your first server-side image workflow.

Get an API key