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How to Use ScreenshotMachine for Open Graph Images (and Which CLI You Mean)

ScreenshotMachine documents a hosted API called from Bash; og-screenshots is the separate local CLI for Open Graph image generation. Here is how each workflow works.
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There is no dedicated “ScreenshotMachine CLI” identified in ScreenshotMachine’s documentation. It documents a hosted screenshot API that you can call from Bash with curl. A separate project, og-screenshots, is a local CLI specifically for generating Open Graph images. The right workflow depends on whether you want a hosted API request or local image generation.

Choose the right tool for the job

Option Where capture runs Input and setup Best fit
ScreenshotMachine API ScreenshotMachine’s hosted service HTTP GET request; requires a customer key and a page URL A script or application that needs to request a screenshot from a hosted API
og-screenshots Locally, using installed software Node.js 16+, Chrome, and ImageMagick; accepts a URL, sitemap, or RSS feed Generating images for one or multiple discovered pages on a machine you control

ScreenshotMachine’s documentation describes a Bash/ curl example for its API; it does not call that example a dedicated CLI. The local og-screenshots project is a separate tool, marked beta in its README. Its README says it was tested only on macOS and that the process can sometimes hang, so compatibility on other platforms and reliability should not be assumed.

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Use ScreenshotMachine’s hosted API from Bash

The API request is an HTTP GET to ScreenshotMachine’s documented screenshot endpoint. You supply your customer key and the URL to capture; dimensions and other capture settings are optional. The example below keeps credentials as placeholders. Get a customer key through your ScreenshotMachine account rather than putting a real key in a public script.

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Make and save a request

  1. Choose the page URL and output dimensions. ScreenshotMachine documents width-by-height dimensions, with width from 100 through 1920 pixels and height from 100 through 9999 pixels; full is accepted for full-page captures.
  2. Set the format and device if needed. Documented formats are JPG, PNG, and GIF; device values are desktop, phone, and tablet.
  3. Send the GET request and redirect the image response to a file.
#!/usr/bin/env bash
set -euo pipefail

CUSTOMER_KEY="YOUR_CUSTOMER_KEY"
PAGE_URL="https://example.com/page"

args=(
  --data-urlencode "key=${CUSTOMER_KEY}"
  --data-urlencode "url=${PAGE_URL}"
  --data-urlencode "dimension=1200x630"
  --data-urlencode "device=desktop"
  --data-urlencode "format=png"
)

curl -Gs "https://api.screenshotmachine.com" "${args[@]}" -o output.png

The 1200×630 dimensions here are a practical Open Graph example, not a ScreenshotMachine-specific recommendation. The --data-urlencode options ensure that characters in the URL are encoded as query parameters. ScreenshotMachine’s own guide recommends percent-encoding the page URL.

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Adjust capture behavior safely

  • Full-page capture: use dimension=full when you need the full page rather than a fixed-size image.
  • Wait time: increase the delay for long pages, images, or animations that need time to render. ScreenshotMachine recommends a longer delay for these cases.
  • Cache: cacheLimit accepts 0 through 14 days. Use zero to request that a cached image not be used.
  • Public requests and secret phrases: the API guide recommends a hash for requests made directly from public HTML. The hash is the MD5 of the URL parameter value followed by the secret phrase. If a secret phrase has been set, requests with a missing or incorrect hash are ignored. Do not expose the secret phrase in public client-side code; use a server-side request when you need to keep it private.

The ScreenshotMachine Python repository also demonstrates constructing an API URL and retrieving the image to output.png: ScreenshotMachine’s screenshotmachine-python repository. The API documentation does not establish a current price or a free allowance, so check the provider’s current account terms before relying on a particular cost.

Generate Open Graph images with the local og-screenshots CLI

Use this route if by “ScreenshotMachine CLI” you meant a command-line tool dedicated to producing Open Graph images. It is a distinct Node.js project, not a ScreenshotMachine product. The project README lists Node.js 16+, Chrome, and ImageMagick’s convert command as requirements.

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Install and capture one page

npm i -g og-screenshots
og-screenshots --url "https://example.com/page"

To invoke it without a global install, the README also documents:

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npx og-screenshots --url "https://example.com/page"

By default, output goes to ./public/screenshots, uses the WebP extension, skips images that already exist, runs with concurrency 3, uses quality 100, and has a 60000-millisecond timeout. The README recommends 1200×630 output for Open Graph images. Use --overwrite if you want existing images replaced.

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Process a sitemap or RSS feed

The required --url accepts one URL, a sitemap, or an RSS feed. When given a sitemap or feed, the tool can process multiple detected URLs. Keep the input scoped to pages for which you actually need images, and use the project’s cap and tuning options when appropriate.

Useful options

Option Use
--url Required input: one URL, sitemap, or RSS feed.
--overwrite Replace output images that already exist; without it, existing images are skipped.
--transform Apply a transform; the README lists the option but its exact accepted values should be checked in the project’s current help or README.
--max-screenshots Limit the maximum number of screenshots processed.
--window-size Set the browser window size.
--chrome-path Specify the Chrome executable path.
--imagemagick-path Specify the ImageMagick executable path.

Consult the og-screenshots repository for the project’s current option syntax and installation details. The README identifies the project as beta; it does not establish recent maintenance status.

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Or skip the browser setup

If you want a hosted request instead of installing and maintaining local capture dependencies, ScreenshotNeo provides a screenshot API. One GET request can return a screenshot or PDF; the response also identifies page verdict and billing status. Cookie/consent banners, newsletter popups, and chat widgets can be removed before capture, and those cleanup steps can be turned off. Bot checks, blank pages, timeouts, failed loads, and cache hits are not billed. Its MCP server offers take_screenshot, get_page_info, and capture_pdf tools for AI agents.

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Example cURL request (replace the URL with the page you want):

curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com/page -o shot.webp

See the ScreenshotNeo documentation for request options and response details. ScreenshotNeo has 1,000 screenshots per month on its free plan with no card required; paid plans start at $5 for 3,000 screenshots. Learn about ScreenshotNeo or sign up for the free plan.

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Troubleshooting

The ScreenshotMachine URL is rejected or behaves unexpectedly

  • Confirm that the request includes both the customer key and a page URL. URL-encode the URL; in Bash, use --data-urlencode.
  • Check that dimensions use the documented width-by-height format and stay within the documented ranges, or use full for a full-page capture.
  • If a secret phrase is set and the request is made from public HTML, a missing or incorrect hash causes the request to be ignored. Keep the phrase out of browser code.

The local CLI cannot find Chrome or ImageMagick

Install the listed dependencies or set --chrome-path and --imagemagick-path to their executable paths. The README’s platform testing is limited to macOS, so failures elsewhere may reflect unverified compatibility.

The local run hangs or does not replace an image

The project README warns that runs can sometimes hang. Its default behavior also skips images already present in the output directory; use --overwrite when replacement is intended. The default timeout is 60000 milliseconds, and the README lists --max-screenshots and --window-size as controls if you need to limit or adjust a run.

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Which workflow should you use?

  • Choose ScreenshotMachine when you want to call a hosted screenshot API from a script and have an account key.
  • Choose og-screenshots when you want a local CLI that can work from a URL, sitemap, or RSS feed and you can meet its software requirements.
  • Choose a hosted alternative such as ScreenshotNeo when you prefer not to set up local browser dependencies and need documented clean-capture behavior and billing verdicts.

Frequently Asked Questions

Does ScreenshotMachine publish an official command-line executable?

The cited ScreenshotMachine API documentation describes Bash and cURL usage, not a separately named or installed ScreenshotMachine CLI.

What is the recommended image size in the og-screenshots README?

It recommends 1200×630 pixels for Open Graph images.

Does ScreenshotMachine’s documentation establish a current free tier?

No. The cited documentation does not establish current pricing or a free allowance.

Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

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