# sagarbhati23/background-remover architecture

> Architecture diagram of the GitHub repository sagarbhati23/background-remover, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-11-15). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/sagarbhati23/background-remover
- Repository: https://github.com/sagarbhati23/background-remover

## Overview

Background Remover is a browser-based image tool: a user selects an image, submits it to the backend, and receives a transparent PNG to view or download. The frontend handles file selection, upload, and display/download; the backend exposes the documented health check and removal API. Image decoding, background removal, and PNG encoding are distinct processing stages implemented together in one backend file. The README documents the API workflow, and the excerpts show its implementation; no separate storage or external service is evident.

Main entry points: [`backend/api/main.py`](https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py) (Remove endpoint), [`frontend/app.js`](https://github.com/sagarbhati23/background-remover/blob/main/frontend/app.js) (Image interface)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_frontend["Browser interface"]
  node_browser_ui["Image interface<br/>[app.js]"]
end

subgraph group_api["Backend API"]
  node_remove_api["Remove endpoint<br/>[main.py]"]
  node_health_api["Health endpoint<br/>[main.py]"]
end

subgraph group_processing["Image processing"]
  node_decode_image["Decode image<br/>[main.py]"]
  node_remove_background["Remove background<br/>[main.py]"]
  node_encode_png["Encode PNG<br/>[main.py]"]
end

node_user(("User"))
node_rembg["rembg library"]

node_user -->|"selects image"| node_browser_ui
node_browser_ui -->|"uploads image"| node_remove_api
node_remove_api -->|"decodes upload"| node_decode_image
node_remove_api -->|"processes image"| node_remove_background
node_remove_background -->|"calls removal"| node_rembg
node_remove_api -->|"encodes output"| node_encode_png
node_remove_api -->|"returns PNG"| node_browser_ui
node_browser_ui -->|"displays and downloads"| node_user
node_user -.->|"checks status"| node_health_api

click node_browser_ui "https://github.com/sagarbhati23/background-remover/blob/main/frontend/app.js"
click node_remove_api "https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py"
click node_health_api "https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py"
click node_decode_image "https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py"
click node_remove_background "https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py"
click node_encode_png "https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_browser_ui,node_user toneBlue
class node_remove_api,node_health_api toneAmber
class node_decode_image,node_remove_background,node_encode_png toneMint
class node_rembg toneIndigo
```

## Components

### Browser interface

- [Image interface](https://github.com/sagarbhati23/background-remover/blob/main/frontend/app.js): `frontend/app.js`

### Backend API

- [Remove endpoint](https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py): `backend/api/main.py`
- [Health endpoint](https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py): `backend/api/main.py`

### Image processing

- [Decode image](https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py): `backend/api/main.py`
- [Remove background](https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py): `backend/api/main.py`
- [Encode PNG](https://github.com/sagarbhati23/background-remover/blob/main/backend/api/main.py): `backend/api/main.py`

### Other components

- **User**
- **rembg library**

## Connections

- User → Image interface: selects image (evidence: `frontend/app.js`)
- Image interface → Remove endpoint: uploads image (evidence: `frontend/app.js`)
- Remove endpoint → Decode image: decodes upload (evidence: `backend/api/main.py`)
- Remove endpoint → Remove background: processes image (evidence: `backend/api/main.py`)
- Remove background → rembg library: calls removal (evidence: `backend/api/main.py`)
- Remove endpoint → Encode PNG: encodes output (evidence: `backend/api/main.py`)
- Remove endpoint → Image interface: returns PNG (evidence: `frontend/app.js`)
- Image interface → User: displays and downloads (evidence: `frontend/app.js`)
- User → Health endpoint: checks status (evidence: `README.md`)