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BrowserStack’s Screenshots FAQ sets a limit of 25 browser/device combinations per session. That is a per-session cap—not a published account-wide concurrency limit. BrowserStack’s documentation does not establish whether Screenshots requests queue when this cap is reached, or how long they might wait. Automate queue rules apply to its testing products, not automatically to Screenshots.
What is BrowserStack Screenshots’ documented limit?
BrowserStack Support says, “There is a limit of 25 browser device combinations per session.” The FAQ does not state a publication year. Read this as the maximum number of browser/device combinations included in one Screenshots session, not as a count of simultaneously running sessions. BrowserStack’s Screenshots FAQ does not explain what happens to requests beyond the cap.
Does Screenshots have an account-wide concurrency limit or queue?
The cited Screenshots documentation does not specify an account-wide concurrent-session allowance, a queue for Screenshots jobs, a queue timeout, or overflow behavior. The 25-combination cap alone does not answer those questions. If you need to plan parallel capture jobs, confirm the applicable limits and queue behavior with BrowserStack Support for Screenshots specifically rather than borrowing limits from another BrowserStack product.
How Automate queueing differs
BrowserStack documents queueing for Automate when test requests exceed an account’s purchased parallel-test capacity. Those tests can wait for available parallel slots. The docs describe queue allowances in relation to purchased parallels and a default maximum wait of 15 minutes. These are Automate rules, not evidence of Screenshots queue behavior.
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- Queue your tests describes Automate queue capacity and waiting.
- Running JS unit tests in parallel provides an Automate parallel-testing example.
BrowserStack lists reaching the parallel limit, high-demand browser/OS combinations, and region or pool constraints as possible reasons Automate sessions wait. Its guidance includes checking parallel capacity and broadening selections where practical. These explanations are scoped to Automate and should not be treated as a diagnosis of a Screenshots request.
Other BrowserStack capacity controls are product-specific
Self-hosted Automate Grid
BrowserStack’s self-hosted Automate Grid documentation says new Grids have a default concurrency of 50 and that Grid concurrency, queue timeout, and retry interval can be configured. These Grid settings do not define the Screenshots cap. See Customize your browser automation Grid.
Rank #2
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App Automate monitoring
The App Automate plan API exposes fields for maximum allowed parallel sessions, running sessions, queued sessions, and maximum queue allowance. Use those fields to inspect App Automate capacity; they are not a universal BrowserStack Screenshots monitoring API. See Get group plan information using App Automate API.
How to interpret a wait or limit in practice
- Identify the product. Confirm whether the request is BrowserStack Screenshots, Automate, App Automate, or a self-hosted Automate Grid.
- Identify what is being counted. Screenshots documents browser/device combinations per session; Automate documents parallel test sessions. They are different units.
- Check the relevant capacity surface. For App Automate, inspect the documented plan and usage fields. For Automate, check purchased parallels and applicable queue settings. For Screenshots, ask Support for its account-level concurrency and queue semantics because the cited FAQ does not publish them.
- Do not infer a Screenshots queue timeout. The 15-minute default belongs to Automate queue documentation; no Screenshots wait duration is established here.
Or skip the browser setup
If your goal is to capture website screenshots through an API instead of setting up browser automation, ScreenshotNeo takes a URL in one GET request and returns an image or PDF. For example:
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