Screenshot API

Capture screenshots of the current page and search text to find its pixel coordinate.

screenshot() - Capture Screenshot

Captures a screenshot of the current page.

from predicate import screenshot
import base64

# Capture PNG screenshot
data_url = screenshot(browser, format="png")

# Save to file
image_data =

Parameters:

• browser (PredicateBrowser): Browser instance
• format (str/string): Image format - "png" or "jpeg" (Python default: "png", TypeScript: options object)
• quality (int/number): JPEG quality (1-100, default: 80). Ignored for PNG.

Returns: Base64-encoded data URL string

find_text_rect() / findTextRect() - Search text to get its pixel coordinates

Finds all occurrences of text on the page and returns their exact pixel coordinates. This is useful for locating UI elements by their visible text content without needing element IDs or selectors.

from predicate import find_text_rect, click_rect

with PredicateBrowser() as browser:
    browser.page.goto("https://example.com")

    # Find "Sign In" button
    result = find_text_rect(browser, "Sign In")

Parameters:

• browser / page (PredicateBrowser/Page): Browser instance or Playwright Page
• text (str/string): Text to search for (required)
• case_sensitive / caseSensitive (bool, optional): If True, search is case-sensitive (default: False)
• whole_word / wholeWord (bool, optional): If True, only match whole words surrounded by whitespace (default: False)
• max_results / maxResults (int/number, optional): Maximum number of matches to return (default: 10, max: 100)

Returns: TextRectSearchResult with:

• status (str/string): "success" or "error"
• query (str/string): The search text that was queried
• case_sensitive / caseSensitive (bool): Whether search was case-sensitive
• whole_word / wholeWord (bool): Whether whole-word matching was used
• matches (int/number): Number of matches found
• results (list/array): List of text matches, each containing:
  • text (str/string): The matched text
  • rect (TextRect): Absolute rectangle coordinates (with scroll offset)
  • viewport_rect / viewportRect (ViewportRect): Viewport-relative coordinates
  • context (TextContext): Surrounding text (before/after)
  • in_viewport / inViewport (bool): Whether visible in current viewport
• viewport (Viewport): Current viewport dimensions and scroll position
• error (str/string): Error message if status is "error"

Use Cases:

• Find buttons, links, or labels by their visible text
• Locate UI elements without CSS selectors or element IDs
• Get exact pixel coordinates for click automation
• Search for specific text in dynamic content
• Verify text visibility and position

Notes:

• Returns both absolute coordinates (including scroll offset) and viewport-relative coordinates
• Includes context text (20 chars before/after) to help identify matches
• Respects page scroll position - use in_viewport to filter visible matches
• Maximum 100 results to prevent performance issues
• Does not consume API credits (runs locally in browser)