screenshot image height

[imad07mos]

how to limit screenshot height to x viewport ? bas64 for tall pages is too large for bulk crawling

[ntohidi]

@imad07mos hi, you can set the screenshot_height_threshold parameter in CrawlerRunConfig:

async def main():
    browser_config = BrowserConfig(
        accept_downloads=True,
        downloads_path=os.path.expanduser("~/.crawl4ai/screenshots"),
    )
    async with AsyncWebCrawler(config=browser_config) as crawler:
        run_config = CrawlerRunConfig(
            screenshot=True,
            adjust_viewport_to_content=True,
            wait_for_images=True,
            screenshot_height_threshold=500,
        )
        result = await crawler.arun(url="https://www.amazon.com", config=run_config)
        if result.success and result.screenshot:
            screenshot_size = len(result.screenshot) * 3 / 4 / 1024  # Size in KB
            print(f"Successfully captured a viewport-only screenshot using the threshold trick.")
            print(f"Screenshot size: {screenshot_size:.2f} KB")
            from base64 import b64decode
            with open("screenshot.png", "wb") as f:
                f.write(b64decode(result.screenshot))
        else:
            print("Failed to get screenshot.")

[imad07mos]

To clarify, i use api directly for non stop data stream, i had to add another api layer on top of it to cut the output

[imad07mos]

Thanks for replying, but this setting is not for limiting height. It's to change screenshot taking strategy for long pages because default strategy is limited at certain height .

…

On Wed, 2 Jul 2025 at 12:02 Nasrin ***@***.***> wrote: @imad07mos <https://github.com/imad07mos> hi, you can set the screenshot_height_threshold parameter in CrawlerRunConfig: async def main(): browser_config = BrowserConfig( accept_downloads=True, downloads_path=os.path.expanduser("~/.crawl4ai/screenshots"), ) async with AsyncWebCrawler(config=browser_config) as crawler: run_config = CrawlerRunConfig( screenshot=True, adjust_viewport_to_content=True, wait_for_images=True, screenshot_height_threshold=500, ) result = await crawler.arun(url="https://www.amazon.com", config=run_config) if result.success and result.screenshot: screenshot_size = len(result.screenshot) * 3 / 4 / 1024 # Size in KB print(f"Successfully captured a viewport-only screenshot using the threshold trick.") print(f"Screenshot size: {screenshot_size:.2f} KB") from base64 import b64decode with open("screenshot.png", "wb") as f: f.write(b64decode(result.screenshot)) else: print("Failed to get screenshot.") — Reply to this email directly, view it on GitHub <#1235 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEAP2Y2IFXDZK5R2U3VZ6C33GO32VAVCNFSM6AAAAAB7XASHFKVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTGNRTHE3DINY> . You are receiving this because you were mentioned.Message ID: ***@***.***>