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ScreenshotMachine documents an HTTP screenshot API you can call from Bash with curl; the available sources do not establish a separate ScreenshotMachine CLI program. Pass session cookies in the cookies parameter, and set the documented Accept-Language and User-Agent controls with accept-language and user-agent. The reviewed API documentation does not show a general-purpose arbitrary-headers parameter.
Call the API with cookies and documented header controls
ScreenshotMachine’s API uses an HTTP GET request to https://api.screenshotmachine.com. The request needs your customer key and target page URL. This Bash example follows the vendor’s documented curl pattern and adds cookie, language, and user-agent parameters:
CUSTOMER_KEY="YOUR_CUSTOMER_KEY"
URL="https://example.com/account"
COOKIES="session=YOUR_SESSION_VALUE;theme=dark"
LANGUAGE="en-US"
USER_AGENT="Mozilla/5.0 (compatible; ExampleBot/1.0)"
ARGS=(
--data-urlencode "key=$CUSTOMER_KEY"
--data-urlencode "url=$URL"
--data-urlencode "cookies=$COOKIES"
--data-urlencode "accept-language=$LANGUAGE"
--data-urlencode "user-agent=$USER_AGENT"
)
curl -Gs "https://api.screenshotmachine.com" "${ARGS[@]}" > output.pngThis is an adaptation of the vendor’s Bash example and parameter documentation, not a tested command. Replace the example values with your own authorized credentials and session data. The --data-urlencode options encode parameter values for the request, including values with reserved characters.
Pass cookies safely
Use cookies for semicolon-separated cookie name/value pairs, for example session=YOUR_SESSION_VALUE;theme=dark. ScreenshotMachine says cookie data must be percent-encoded; its documented encoding example turns name1=value1;name2=value2 into name1%3Dvalue1%3Bname2%3Dvalue2. With curl, --data-urlencode "cookies=$COOKIES" handles parameter-value encoding in the request pattern above.
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Only send cookies you are authorized to use. Treat session cookies as credentials: do not commit them to source control, place them in public scripts, or expose them in shared logs.
Which headers can you set?
accept-languagecontrols the documentedAccept-Languagerequest header, such asen-US.user-agentcontrols the documentedUser-Agentrequest header. The API documentation includes a Samsung Galaxy S20 browser user-agent example.
The reviewed official Website Screenshot API documentation does not establish a generic arbitrary-header parameter. Do not assume curl’s own --header option, or a guessed API parameter such as headers=Authorization:..., will make ScreenshotMachine forward custom headers to the target page.
Rank #2
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- 24 months manufacturer warranty
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Cookies are not click or hide actions
The cookies parameter sends cookie pairs for the capture. The separate click option clicks a CSS selector before capture, while hide hides selected page elements; the documentation gives cookie banners as an example for hiding. These options alter page interaction or appearance and do not transmit an authenticated session cookie. See the vendor’s Website Screenshot API documentation for the API’s available capture options.
Authentication and error handling
Every request needs a customer key. ScreenshotMachine also documents an optional secret phrase: when configured, calculate hash as the MD5 hash of the target URL concatenated with that phrase. The service ignores requests with a missing or incorrect hash. Keep the key, secret phrase, and session cookie private.
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallIf the saved image appears to show an error instead of the page, inspect the X-Screenshotmachine-Response response header. Documented error codes include invalid_key, invalid_url, invalid_selector, and no_credits; the service may return an error image for an invalid or incomplete call.
Rank #3
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Common problems and fixes
- The screenshot is an error image: check
X-Screenshotmachine-Response, then verify the customer key, target URL, selector if used, and remaining credits based on the reported error. - The page is not authenticated: confirm the session cookie is current, authorized, and correctly encoded; cookie values can expire or be scoped to a different site or path.
- The language or browser identity is wrong: use the documented parameter names
accept-languageanduser-agent, rather than assuming an arbitrary header field is supported. - The URL or cookie contains reserved characters: keep
--data-urlencodein the curl arguments so values are encoded as request parameters.
Other capture settings that may matter
The API documentation also describes dimensions, device presets, image formats, wait delay, zoom, CSS-selector capture, and cropping. These affect how a page is rendered or which part is captured; they are separate from cookie transmission and the two documented header controls. The API requires the target page URL, and ScreenshotMachine strongly recommends percent-encoding it.
Or skip the browser setup
ScreenshotNeo offers a one-request screenshot API; its documented parameter names also work with names used by other screenshot APIs. For a basic capture:
Rank #4
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curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpSee the ScreenshotNeo API documentation for request options. It accepts cookie and consent banners like a visitor and removes more than 60 known consent platforms, newsletter popups, and chat widgets before capture; each of those steps can be turned off. Bot checks, blank pages, failed loads, timeouts, and cache hits cost nothing, and responses identify the page verdict and billing status in headers. Its MCP server provides take_screenshot, get_page_info, and capture_pdf tools for AI agents and MCP clients. The free plan includes 1,000 shots a month with no card; paid plans start at $5 for 3,000 shots.
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Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
Does ScreenshotMachine have a standalone CLI?
The reviewed official sources document a Bash and curl method for calling the HTTP API, not a separate CLI executable.
Can I send an Authorization header to the captured website?
The reviewed official API page does not document a generic arbitrary-header parameter, so it does not establish support for forwarding an Authorization header.
Quick Recap
Best Value
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