Relight API

About Relight

Describe new lighting and get the same photo relit.

Call it with the model name popnow/relight-v1/edit on POST /jobs/createTask, from 30 credits per image ($0.03).

Introduction

Relight changes the light in a photo. Describe the light you want and get the same people and scene back, lit that way: window light at sunset, blue hour, a hard overhead spotlight or a golden rim from behind. Nothing else in the frame is meant to change.

Key features

Light from a sentence

Write the source, direction, colour and hardness. The tool runs Qwen-Image-Edit-2509 with dx8152's Relight LoRA, trained on before-and-after relighting pairs, so it moves light and shadow rather than repainting the picture.

People and framing stay

Faces, clothes, pose and composition were unchanged in every test; only light, shadows and colour grade moved, which keeps a relit photo usable next to the original in a set.

Bigger mood shifts

A white dance studio became a dark room with one spotlight, and a misty dawn shore became a golden sunset with rim light.

Request parameters

Pricing

Prices are in credits, the same credits you use on the website (1 credit = $0.001). The hold is taken when the task is accepted and settled to the actual charge when it finishes; failed tasks are refunded.

For an exact number before you run, send the same body to POST /jobs/quote.

Use cases

Rescue flat photos

Add direction and mood to evenly lit portraits and product shots that came out of a softbox or an overcast day looking lifeless.

Time of day

Move a location photo to blue hour or golden hour without going back to the location, for example a salt flat at blue hour with the truck lights on.

One look for a set

Bring photos taken in different light to one consistent look for a campaign, a lookbook or a carousel.

Prompt guide & pro tips

Start with "Relight the image with"

Then name the light source and where it comes from. Specific beats vague: "a single hard spotlight from directly above" works better than "dramatic".

Remove old shadows first

If the photo already has hard shadows, run Shadow Remover first and relight the clean result.

Expect props for motivated light

Asking for window light can add a window to the scene. If you do not want new objects, describe light only ("warm light from the left").

Change one thing per run

Ask for one light setup at a time. When a result is close, keep the seed and adjust only the colour or the direction in the prompt, so you can compare the two versions side by side.

API quick start

Call the Relight API in three steps

1. Create an API key. Sign in to PopNow and create a key in the API console. Keys start with sk-popnow- and use the same credits as the website.
2. Send the request. POST /jobs/createTask with model popnow/relight-v1/edit and an input object that follows the parameter table. The response returns a task ID straight away.
3. Get the result. Poll GET /jobs/recordInfo with the task ID, or pass a callBackUrl and we post the result to it. Download the output links when the task succeeds.

# 1. Create the task. Keep the Idempotency-Key if you retry after a network error.
export IDEMPOTENCY_KEY="$(uuidgen)"
curl -X POST https://api.popnow.ai/api/v1/jobs/createTask \
  -H "Authorization: Bearer $POPNOW_API_KEY" \
  -H "Content-Type: application/json" \
  -H "Idempotency-Key: $IDEMPOTENCY_KEY" \
  -d '{
  "model": "popnow/relight-v1/edit",
  "input": {
    "prompt": "A ceramic teapot on a linen cloth, soft window light, muted palette",
    "image_url": "https://media.popnow.ai/influencer/examples/marco.webp",
    "output_format": "jpeg"
  }
}'

# 2. Copy data.taskId from the response, then poll until state is succeeded, failed, canceled or expired.
TASK_ID="TASK_ID_FROM_RESPONSE"
curl "https://api.popnow.ai/api/v1/jobs/recordInfo?taskId=$TASK_ID" \
  -H "Authorization: Bearer $POPNOW_API_KEY"

Replace the prompt and any links with your own. The API tab has the response, polling and callback reference.

Relight API questions

More about Relight

Try it

Relight AI Image Generator onlineCreate images with Relight in PopNow

Docs

Relight model ID and input schema in the API docsPopNow API quickstart: your first request in five minutesImage generation guide for the PopNow APIWebhooks: get Relight results without polling