---
title: "POST /improve"
method: POST
path: "/improve"
tags: ["Improvement Program"]
---

# POST /improve

`POST /improve`

Submit an image to the remove.bg Improvement program
* Contribute an image that remove.bg is currently not able to remove the background from properly
* Help us make remove.bg better
* Get better results for similiar images in the future

Notes:
  * By submitting images through the API you agree to the <a target="_blank" rel="noopener" href="/ipc">Improvement Program Conditions</a>
  * File size: up to 22MB
  * Input resolution: up to 50 megapixels
  * up to 100 files per day. <br> Higher rate limits are only available to high-volume solution users; get in touch <a href="/enterprise/contact">here</a>.

Requires either an API Key to be provided in the `X-API-Key` request header or an OAuth 2.0 access token to be provided in the `Authorization` request header.

Please note that submissions are used on a best-effort basis and the extent of expected improvement varies depending on many factors, including the number of provided images, their complexity and visual similarity. Improvements usually take several weeks to become effective.

## Request body

- ImprovementProgramJson
  - `image_file_b64` string — Source image file (base64-encoded string). (If this parameter is present, the other image source parameters must be empty.)
  - `image_url` string — Source image URL. (If this parameter is present, the other image source parameters must be empty.)
  - `image_filename` string — Filename of the image, if not provided it will be autodetected form the submitted data.
  - `tag` string — Images with the same tag are grouped together.

## Response `200`

Image submitted

## Other responses

- `400` — Error: Invalid parameters or input file unprocessable
- `403` — Error: Authentication failed
- `429` — Error: Rate limit exceeded

---

[API](https://skmtc.dev/remove/apis/background-removal-api.md) · [All operations](https://skmtc.dev/remove/apis/background-removal-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/remove/background-removal-api/revisions/d155c05b2a6f/schema)