SnapAPI/sdk/python/README.md

# SnapAPI Python SDK

Official Python client for [SnapAPI](https://snapapi.eu) — the EU-hosted screenshot API.

**Zero dependencies.** Uses only Python standard library (`urllib`).

## Installation

```bash
pip install snapapi
```

## Quick Start

```python
from snapapi import SnapAPI

snap = SnapAPI("your-api-key")

# Capture a screenshot
screenshot = snap.capture("https://example.com")

with open("screenshot.png", "wb") as f:
    f.write(screenshot)
```

## Usage

### Basic Screenshot

```python
png = snap.capture("https://example.com")
```

### With Options

```python
jpg = snap.capture(
    "https://example.com",
    format="jpeg",
    width=1920,
    height=1080,
    quality=90,
)
```

### Full-Page Capture

```python
full = snap.capture(
    "https://example.com/blog",
    full_page=True,
    device_scale=2,  # Retina
)
```

### Mobile Viewport

```python
mobile = snap.capture(
    "https://example.com",
    width=375,
    height=812,
    device_scale=2,
)
```

### Wait for Dynamic Content

```python
screenshot = snap.capture(
    "https://example.com/dashboard",
    wait_for_selector="#chart-loaded",
    wait_until="networkidle2",
)
```

### Dark Mode Capture

```python
# Capture in dark mode (prefers-color-scheme: dark)
dark_screenshot = snap.capture(
    "https://example.com",
    dark_mode=True,
    format="png",
)
```

### Custom User Agent

```python
# Set a custom User-Agent string for the request
screenshot = snap.capture(
    "https://example.com",
    user_agent="Mozilla/5.0 (compatible; SnapAPI/1.0)",
    format="png",
)
```

### Hide Elements Before Capture

```python
# Hide cookie banners, popups, ads
clean_screenshot = snap.capture(
    "https://example.com",
    hide_selectors=[
        ".cookie-banner", 
        ".popup-overlay",
        "#advertisement",
        ".tracking-notice"
    ],
)

# Hide single element
single_hide = snap.capture(
    "https://example.com", 
    hide_selectors=".newsletter-popup",
)
```

### Custom CSS Injection

```python
# Inject custom CSS before capture
styled = snap.capture(
    "https://example.com",
    css='body { background: #1a1a2e !important; color: #eee !important }',
)

# Combine with other options
combined = snap.capture(
    "https://example.com",
    css=".hero { padding: 80px 0 } h1 { font-size: 48px }",
    dark_mode=True,
    hide_selectors=[".cookie-banner"],
)
```

### JavaScript Injection

```python
# Execute custom JavaScript before capture
interactive_screenshot = snap.capture(
    "https://example.com",
    js="""
    // Dismiss modal popup
    document.querySelector('.modal-overlay')?.remove();
    
    // Scroll to specific content
    window.scrollTo(0, 500);
    
    // Click button to reveal content
    document.querySelector('#show-more-btn')?.click();
    
    // Wait for animation to complete
    await new Promise(resolve => setTimeout(resolve, 1000));
    """,
)

# Combine with other options for complex scenarios
complex_capture = snap.capture(
    "https://example.com/app",
    js='document.querySelector(".sidebar").style.display = "none";',
    css="body { zoom: 0.8 }",
    wait_for_selector="#content-loaded",
    hide_selectors=[".ad-banner", ".cookie-notice"],
)
```

### Crop Specific Areas (Clip)

```python
# Crop a specific rectangular area from the screenshot
cropped_screenshot = snap.capture(
    "https://example.com",
    clip={
        "x": 100,      # X coordinate (pixels from left)
        "y": 50,       # Y coordinate (pixels from top)
        "width": 800,  # Width of the crop area
        "height": 600, # Height of the crop area
    },
)

# Useful for capturing specific UI elements or sections
header_screenshot = snap.capture(
    "https://example.com",
    clip={"x": 0, "y": 0, "width": 1280, "height": 120},  # Top banner only
    format="png",
)
```

### Error Handling

```python
from snapapi import SnapAPI, SnapAPIError

snap = SnapAPI("your-api-key")

try:
    screenshot = snap.capture("https://example.com")
except SnapAPIError as e:
    print(f"API error {e.status}: {e.detail}")
```

## API Reference

### `SnapAPI(api_key, base_url="https://snapapi.eu", timeout=30)`

### `snap.capture(url, **options) -> bytes`

| Option | Type | Default | Description |
|--------|------|---------|-------------|
| `url` | `str` | — | URL to capture (required) |
| `format` | `str` | `"png"` | Output: `png`, `jpeg`, `webp` |
| `width` | `int` | `1280` | Viewport width (320–3840) |
| `height` | `int` | `800` | Viewport height (200–2160) |
| `full_page` | `bool` | `False` | Capture full page |
| `quality` | `int` | `80` | JPEG/WebP quality (1–100) |
| `wait_for_selector` | `str` | — | CSS selector to wait for |
| `device_scale` | `float` | `1` | Device pixel ratio (1–3) |
| `delay` | `int` | `0` | Extra delay in ms (0–5000) |
| `wait_until` | `str` | `"domcontentloaded"` | Load event |
| `dark_mode` | `bool` | `False` | Emulate prefers-color-scheme: dark |
| `hide_selectors` | `list` | — | CSS selectors to hide before capture |
| `css` | `str` | — | Custom CSS to inject before capture (max 5000 chars) |
| `clip` | `dict` | — | Crop rectangle: `{"x": int, "y": int, "width": int, "height": int}` (mutually exclusive with full_page/selector) |

### `snap.health() -> dict`

Returns API health status.

## EU-Hosted & GDPR Compliant

SnapAPI runs entirely on EU infrastructure (Germany). Your data never leaves the EU.

## License

MIT — [Cloonar Technologies GmbH](https://snapapi.eu)