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How dark-mode screenshots work
A screenshot API normally opens a page in a browser and captures what the browser renders. A dark-mode setting asks that browser to report a dark color-scheme preference, commonly through the prefers-color-scheme media feature. If the site has dark styles that respond to the preference, the capture can appear dark. If it does not, the preference alone cannot make the page dark.
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Some sites apply a theme using their own toggle or saved setting instead. Such sites may need extra setup beyond emulating the browser preference; ScreenshotEngine notes that local storage or a custom theme toggle can require additional steps: ScreenshotEngine dark-mode guidance.
Screenshot APIs and approaches to compare
The available specifications describe different controls, not comparative capture quality, uptime, price, or speed. Choose based on the settings you need and whether you want to operate browser automation yourself.
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| Option | Dark-mode control | Capture and output controls | Operational responsibility |
|---|---|---|---|
| ScreenshotNeo | Dark mode is among its documented options. | Full-page capture, viewport and device options, and PNG, JPEG, WebP, or PDF output are available. | Hosted API or MCP server; the provider operates the browser infrastructure. |
| ScreenshotAPI.net | Its dark_mode parameter defaults to false. The vendor says it attempts dark rendering when a site supports a dark theme or built-in dark styles. |
See the provider documentation for its current capture controls. | Hosted service. |
| Screenshot API | Its dark boolean defaults to false and sets prefers-color-scheme: dark. |
Its documentation lists viewport limits, full-page behavior, output formats, delay, and timeout details. | Hosted service. |
| Playwright | Browser context configuration supports colorScheme: 'dark', emulating prefers-color-scheme. |
The Page screenshot API supports full-page capture, image format, scale, clipping, and a screenshot path. | You manage browser installation, execution, and capture environment. |
The provider-specific details above are vendor-published specifications: ScreenshotAPI.net documentation and Screenshot API documentation. Check the current documentation before building against parameter names or limits. No evidence here establishes a price or quality winner among providers.
Capture a page in dark mode with Playwright
Playwright is the self-managed route when you need control over browser contexts or want to integrate captures into an existing automation workflow. Install Playwright and its Chromium browser using the commands below, then save this script as dark-shot.mjs. It sets the context color scheme before navigation and writes a full-page PNG.
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npm install playwrightnpx playwright install chromium- Save the following as
dark-shot.mjs:
import { chromium } from 'playwright';
const url = process.argv[2] ?? 'https://example.com';
const browser = await chromium.launch({ headless: true });
try {
const context = await browser.newContext({
colorScheme: 'dark',
viewport: { width: 1440, height: 900 },
});
const page = await context.newPage();
await page.goto(url, { waitUntil: 'networkidle', timeout: 60_000 });
await page.screenshot({ path: 'dark-shot.png', fullPage: true, type: 'png' });
await context.close();
} finally {
await browser.close();
}- Run
node dark-shot.mjs https://example.com. The resulting file isdark-shot.pngin the current directory.
The example uses a 1440 × 900 viewport, waits for network idle, then captures the full page. For pages that keep network connections active, such as those using long polling, network idle may never arrive; use an appropriate page-ready selector or a bounded wait instead. For a fixed viewport capture, omit fullPage: true. To save JPEG or another supported format, change the screenshot type and file extension; Playwright’s screenshot documentation describes the available options: Playwright screenshots.
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Make visual comparisons repeatable
For visual regression work, keep the browser version and execution environment consistent between baseline and comparison captures. Playwright cautions that rendering can vary with the host operating system, browser version, settings, hardware, power source, and headless mode: Playwright visual comparisons. Also keep viewport dimensions, device scale, fonts, and page state stable. Otherwise, differences may reflect the environment rather than a site change.
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Or skip the browser setup
Use ScreenshotNeo’s hosted API when you would rather request a capture than install and operate a browser. The URL below is the API base; its docs describe the available parameters and response: ScreenshotNeo API documentation.
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpReplace YOUR_API_KEY with your key and change the target URL as needed. Configure dark mode using the API’s documented options. ScreenshotNeo removes supported cookie and consent banners, newsletter popups, and chat widgets before capture; each cleanup step can be turned off. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and response headers report the page verdict and billing status. It also offers an MCP server with screenshot, page-info, and PDF-capture tools for AI agents. The free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000 screenshots.
Sign up for ScreenshotNeo’s free plan to try 1,000 screenshots a month without a card.
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Troubleshooting dark-mode captures
- The page remains light: Confirm the API’s dark-mode option is enabled or that Playwright uses
colorScheme: 'dark'. Then check whether the site supports the browser preference. A site controlled by its own toggle or local storage may need that state set separately. - The capture times out: The page may keep network activity open. In Playwright, replace
networkidlewith a wait for a meaningful selector or a bounded delay. With a hosted API, consult its current timeout and wait controls. - The image cuts off content: Use full-page capture if the API or screenshot method supports it. Lazy-loaded content may require scrolling or a service option that loads lazy images before capture.
- Two captures differ unexpectedly: Compare browser version, OS, viewport, scale, fonts, and headless settings, and use the same execution environment for both runs.
- The site’s consent prompt or overlay appears: Handle the site’s consent state or use a capture service with cleanup controls; verify that the relevant cleanup step is enabled.
Cost, reliability, and operating trade-offs
With Playwright, there is no per-capture API price established here, but your team is responsible for browser infrastructure, updates, execution capacity, retries, and keeping environments consistent. A hosted API shifts browser operation to the provider and may expose request-level controls such as wait behavior and timeouts. The sources do not establish comparative uptime, latency, fidelity, support quality, or pricing for the non-ScreenshotNeo providers in this guide, so compare their live plans and terms directly rather than inferring a winner from feature lists.
For ScreenshotNeo, every plan includes all features. Monthly plans listed are Free (1,000 shots), Starter ($5 for 3,000), Growth ($15 for 15,000), Pro ($39 for 60,000), Scale ($99 for 250,000), and Business ($249 for 1,000,000); yearly billing gives two months free. See the provider’s current site and documentation for plan terms.
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Frequently Asked Questions
Does requesting dark mode make every website dark?
No. The page must support the browser’s dark color-scheme preference or use a theme state that the capture setup can apply.
Should I use a hosted API or Playwright?
Use a hosted API to avoid managing the browser runtime; choose Playwright when you want to control and operate the automation environment yourself.
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