SnapAPI/sdk/python/README.md
SnapAPI Developer 91a08bab70 Add js parameter for custom JavaScript injection
- Add js parameter to ScreenshotOptions interface (max 5000 chars)
- Execute JavaScript via page.evaluate() after delay, before CSS/hideSelectors
- 5-second timeout with JS_TIMEOUT error handling
- JS_EXECUTION_ERROR for script failures with sanitized error messages
- Support in both GET and POST endpoints with validation
- Updated OpenAPI spec for both GET and POST routes
- Added comprehensive test coverage (service + route layers)
- Updated SDK documentation (Node.js and Python) with examples

Test results: 414 tests passing (includes new JS injection tests)
2026-03-05 12:07:54 +01:00

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# 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",
)
```
### 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"],
)
```
### 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 (3203840) |
| `height` | `int` | `800` | Viewport height (2002160) |
| `full_page` | `bool` | `False` | Capture full page |
| `quality` | `int` | `80` | JPEG/WebP quality (1100) |
| `wait_for_selector` | `str` | — | CSS selector to wait for |
| `device_scale` | `float` | `1` | Device pixel ratio (13) |
| `delay` | `int` | `0` | Extra delay in ms (05000) |
| `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) |
### `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)