Best Screenshot API in 2026: An Honest Comparison

Picking a screenshot API sounds simple until you actually try to compare them. Marketing pages blur together, pricing models are designed to confuse, and half the “feature lists” are just different words for the same thing.

We build len.sh, so we obviously have a bias. But we also use competitor APIs regularly during development and testing, and we have opinions based on real experience. This post is our honest attempt at a comparison that’s actually useful to a developer evaluating their options in 2026.

The five services we’re comparing:

1. len.sh
2. ScreenshotOne
3. Urlbox
4. Screenshotapi.net
5. APIFlash

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What We’re Comparing

We’re evaluating each API on the criteria that actually matter when you’re building a product:

• API simplicity — how fast can you go from zero to working screenshot?
• Feature set — does it cover the common use cases without workarounds?
• Pricing transparency — can you predict your bill?
• Performance — how fast are uncached requests?
• Developer experience — documentation, error messages, SDKs

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Quick Overview

Feature	len.sh	ScreenshotOne	Urlbox	Screenshotapi.net	APIFlash
Free tier	100/mo	100/mo	None	100/mo	100/mo
Full-page capture	Yes	Yes	Yes	Yes	Yes
PDF generation	Dedicated endpoint	Via format param	Yes	Limited	No
OG image generation	Dedicated endpoint	No	No	No	No
Custom JS/CSS injection	Yes	Yes	Yes	No	No
Signed URLs	Yes	No	Yes	No	No
Ad/cookie banner blocking	Yes	Yes	Yes	No	No
Output formats	PNG, JPEG, WebP, PDF	PNG, JPEG, WebP, PDF	PNG, JPEG, WebP, PDF	PNG, JPEG	PNG, JPEG
Element selector capture	Yes	Yes	Yes	No	No
Auth method	Query param or Bearer	Query param	Query param	Query param	Query param

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len.sh

Our API. We built len.sh because we wanted a screenshot API that was simple to integrate, transparent in pricing, and didn’t gate basic features behind expensive plans.

Strengths:

• Extremely simple API surface. One endpoint for screenshots, one for OG images, one for PDFs. No complex configuration objects or webhook callbacks required.
• All features available on all plans, including the free tier. No feature gating.
• Built-in OG image generation via /v1/og — no need to build HTML templates for social cards.
• Signed URLs for embedding screenshots in public contexts without exposing your API key.
• Custom JS and CSS injection for modifying pages before capture.
• Transparent pricing: €0 (100/mo), €19/mo (25,000/mo), €99/mo (500,000/mo).

Weaknesses:

• Newer service — smaller community and fewer integrations than established players.
• No webhook/callback mode for async processing.
• No geo-targeting (choose which region renders the page).

Getting started:

curl "https://api.len.sh/v1/screenshot?url=https://example.com&access_key=YOUR_API_KEY" \
  --output screenshot.png

That’s a working screenshot. One line.

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ScreenshotOne

ScreenshotOne is a well-established screenshot API with a solid feature set and good documentation.

Strengths:

• Mature platform with good uptime track record.
• Supports a wide range of parameters including geolocation-based rendering.
• Caching built in with configurable TTLs.
• Good documentation with clear examples.

Weaknesses:

• No dedicated OG image endpoint — you need to build your own HTML templates and screenshot them.
• No signed URL support — API key must be present on every request.
• Pricing tiers gate some features (like higher concurrency and priority processing) behind more expensive plans.
• The free tier is limited and requires a credit card for some plan upgrades.

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Urlbox

Urlbox is one of the most feature-rich screenshot APIs available. It supports nearly every rendering option you could want.

Strengths:

• Extremely comprehensive feature set: retina rendering, dark mode, proxy support, S3 integration, webhooks.
• Signed URL support for secure embedding.
• Long track record — one of the oldest screenshot APIs still actively maintained.
• Webhook callbacks for async processing.

Weaknesses:

• No free tier. Pricing starts at $19/month for 2,000 screenshots.
• Feature gating — some capabilities are only available on higher plans.
• The API surface is complex. There are a lot of parameters, which means a steeper learning curve.
• At high volumes, pricing gets expensive quickly compared to alternatives.

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Screenshotapi.net

A simpler, more budget-focused option for basic screenshot needs.

Strengths:

• Simple API — fewer parameters means less to learn.
• Free tier available (100 screenshots/month).
• Straightforward pricing.

Weaknesses:

• Limited output formats (PNG and JPEG only, no WebP).
• No element selector capture, no JS/CSS injection, no ad blocking.
• No PDF generation endpoint.
• Documentation is sparse compared to competitors.
• Slower average response times in our testing.

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APIFlash

APIFlash markets itself as a “simple screenshot API” and delivers on that promise, though with a more limited feature set.

Strengths:

• Clean, simple API design.
• Free tier with 100 screenshots/month.
• Good response times for basic screenshots.
• Fresh mode to bypass cache on demand.

Weaknesses:

• No PDF generation.
• Limited to PNG and JPEG output.
• No JS/CSS injection, no element selectors.
• No signed URLs.
• Fewer wait strategies for dynamic content.

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Pricing Comparison

This is where the differences get concrete. Here’s what each service costs at different scales:

Monthly Volume	len.sh	ScreenshotOne	Urlbox	Screenshotapi.net	APIFlash
100 (testing)	Free	Free	$19 (min plan)	Free	Free
5,000	€19	$29	$49	$14	$14
25,000	€19	$79	$149	$49	$49
100,000	€99	$199	$349	$129	$129
500,000	€99	Custom	Custom	Custom	Custom

A few things stand out:

1. len.sh has the most aggressive pricing at scale. 500,000 screenshots for €99/mo is hard to beat. Most competitors are in “contact sales” territory at that volume.
2. Urlbox has no free tier, which makes it harder to evaluate without committing money.
3. Screenshotapi.net and APIFlash are price-competitive at low volumes but offer significantly fewer features.
4. ScreenshotOne is reasonably priced for mid-range volumes but gets expensive quickly.

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Developer Experience

We care a lot about DX, so here’s how the integration experience compares.

Time to First Screenshot

API	Steps to first screenshot
len.sh	Sign up, get key, one curl command
ScreenshotOne	Sign up, get key, one curl command
Urlbox	Sign up, add payment, get key, one curl command
Screenshotapi.net	Sign up, get key, one curl command
APIFlash	Sign up, get key, one curl command

Most are similar here. Urlbox’s requirement for payment before you can test is a friction point.

SDK Support

API	JavaScript	Python	Ruby	PHP	Go
len.sh	Yes	Yes	Yes	Yes	Yes
ScreenshotOne	Yes	Yes	No	Yes	No
Urlbox	Yes	No	Yes	No	No
Screenshotapi.net	No	No	No	No	No
APIFlash	No	No	No	No	No

len.sh has the broadest official SDK coverage. ScreenshotOne and Urlbox have partial coverage. The others rely on raw HTTP.

Error Messages

This is underrated. When something goes wrong, a clear error message saves hours of debugging.

len.sh returns structured errors with specific codes:

{
  "error": {
    "code": "INVALID_URL",
    "message": "The provided URL is not valid",
    "request_id": "req_abc123"
  }
}

Most competitors return similar structured errors, though the specificity varies. ScreenshotOne’s errors are good. Urlbox’s are good. The smaller providers tend to return less descriptive messages.

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When to Choose Each API

Choose len.sh if you want the simplest possible integration, transparent pricing, full feature access on every plan, and you value OG image generation and signed URLs.

Choose ScreenshotOne if you need geo-targeted rendering and are comfortable with a more established platform, and the pricing works for your volume.

Choose Urlbox if you need the most comprehensive feature set available (webhooks, S3 integration, dark mode simulation) and budget isn’t a primary concern.

Choose Screenshotapi.net or APIFlash if you have basic screenshot needs, low volume, and want the cheapest possible option.

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Our Honest Take

We built len.sh because we thought the screenshot API market was overcomplicating a fundamentally simple problem. You have a URL, you want an image. The API should be one HTTP call, the pricing should be predictable, and every feature should be available to every customer.

That said, if you need geo-targeted rendering or webhook callbacks, Urlbox or ScreenshotOne might be a better fit today. We’re building toward those features, but we’d rather be honest about what we don’t have than oversell.

For the majority of screenshot use cases — OG images, link previews, visual monitoring, PDF generation, thumbnail galleries — len.sh gets you to production faster and costs less at every scale.

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Try It Yourself

The best way to evaluate a screenshot API is to actually use it. Sign up for a free len.sh account and run your first request:

curl "https://api.len.sh/v1/screenshot?url=https://your-site.com&access_key=YOUR_API_KEY" \
  --output test.png

No credit card. No commitment. 100 free screenshots per month to see if it fits your workflow.