Call CaptureKit from your Node.js backend with GET https://api.capturekit.dev/v1/capture, pass the page as the url query parameter, and authenticate with your API key in the x-api-key header. The example below saves a PNG response to a file. It uses the current /v1/ endpoint rather than older examples that use access_key.
What you need before making the request
- A CaptureKit account, an API key issued in its current dashboard at app.capturekit.dev, and available credits. The getting-started guide explains account and key setup: CaptureKit documentation.
- A server-side Node.js environment with the built-in
fetchAPI. Keep the API key on the server: do not place it in browser JavaScript or a public repository. - The target page must be supplied as a URL. The capture endpoint is
GET /v1/captureonhttps://api.capturekit.dev.
There is no documented India-only endpoint or setup. The available documentation does not establish India-specific pricing, taxes, latency, or data residency, so check with the provider for those details if they affect your deployment.
Make a screenshot request in Node.js
Set CAPTUREKIT_API_KEY in the server process environment, then save this as an ES module file such as capture.mjs. Replace the example URL with the page you want to capture.
import { writeFile } from "node:fs/promises";
const apiKey = process.env.CAPTUREKIT_API_KEY;
if (!apiKey) {
throw new Error("Set CAPTUREKIT_API_KEY in the server environment.");
}
const endpoint = new URL("https://api.capturekit.dev/v1/capture");
endpoint.searchParams.set("url", "https://example.com");
endpoint.searchParams.set("format", "png");
const response = await fetch(endpoint, {
method: "GET",
headers: { "x-api-key": apiKey }
});
if (!response.ok) {
const detail = await response.text();
throw new Error(`CaptureKit request failed (${response.status}): ${detail}`);
}
const image = Buffer.from(await response.arrayBuffer());
await writeFile("capture.png", image);
console.log("Saved capture.png");The code checks the HTTP status before treating the response as image data. On success it reads the response body as bytes and writes those bytes to disk. If your application stores files in object storage or returns them to a caller, replace writeFile with that application’s storage or response logic. See the CaptureKit capture endpoint reference for current parameters and response details.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Keep the API key out of browser code
Use an environment variable or your hosting platform’s secret manager. Do not send the key to a web page or mobile app: users can inspect client-side code and network requests. Avoid committing a local environment file containing the key.
Choose the output format
The endpoint documents PNG, JPEG/JPG, WebP, and PDF output; PNG is the default. Specify the desired format with endpoint.searchParams.set("format", "webp") or the corresponding supported format before sending the request.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
| Format | Typical fit | Implementation consideration |
|---|---|---|
| PNG | General screenshots where preserving crisp text and lossless output matters. | Default format; treat the response as binary image data. |
| JPEG/JPG | Photographic or image-heavy pages where lossy compression is acceptable. | Use the matching file extension and content handling in your application. |
| WebP | Web delivery when the consuming application supports WebP. | Ensure downstream clients or storage metadata identify the chosen format correctly. |
| A document-style capture rather than a raster image file. | Handle and name the response as a PDF; consult the endpoint reference for its PDF-specific options. |
The format choice affects how you should name, store, and serve the returned bytes. Do not assume that the image-saving code above is suitable unchanged for PDF workflows.
Store the output in your application or use the documented S3 options
The endpoint reference describes S3-related parameters as an alternative output path. Choose between receiving and storing the returned data in your own application flow or configuring the documented S3 upload options. Check the current endpoint reference for the exact parameter names and requirements; do not guess them or send S3 settings copied from an older API version.
Recommended Free Tools
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Credits, plans, and request costs
CaptureKit documents one credit per screenshot capture call. Its general billing documentation says successful synchronous calls are billed and errors are generally free, subject to endpoint-specific exceptions. Do not assume every HTTP status has identical billing treatment; consult the endpoint and billing documentation for the current rules. This example is synchronous and does not use an asynchronous job or polling flow.
The pricing page currently advertises a free tier with 100 credits and paid monthly tiers. Allowances and prices can change, so review CaptureKit pricing before estimating spend. Compare your expected monthly successful capture volume with the live plan allowance rather than relying on a price or limit copied into a tutorial.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Troubleshooting common responses
| Status | Documented meaning | What to check |
|---|---|---|
400 |
Bad request. | Confirm that the url parameter is present and is a valid page URL, and that any optional parameter is supported by the current endpoint. |
401 |
Invalid, inactive, or expired API key. | Check that the server has the current key and sends it in the exact x-api-key header. The February 2026 migration announcement says the new dashboard issues a new API key; an older key or access_key-style example may not work. |
402 |
Payment required. | Check your account’s available credits and current plan in the dashboard. |
| Rate limit response | Request rate limit reached. | Reduce request frequency and consult the current API documentation for applicable limits and retry guidance. |
500 |
Internal error. | Capture the status and response detail for diagnosis, then retry cautiously or contact CaptureKit support if it persists. |
The example includes response text in thrown errors to help diagnose failures. Avoid logging secrets, and be careful not to expose internal response details to end users.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Or skip the browser setup
For a one-request alternative, ScreenshotNeo is a website screenshot API with an MCP server for AI agents. Its clean-shot processing removes cookie banners, newsletter popups, and chat widgets before capture; bot checks, blank pages, and failed loads are not billed. Here is a Node.js request that saves a WebP response:
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://stripe.com' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);
if (!res.ok) throw new Error(`ScreenshotNeo request failed: ${res.status}`);
const shot = Buffer.from(await res.arrayBuffer());
await import('node:fs/promises').then(({ writeFile }) => writeFile('shot.webp', shot));See the ScreenshotNeo API documentation for request options. Its MCP server lets AI agents take screenshots, and the free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000. Learn about ScreenshotNeo or sign up free.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Frequently Asked Questions
Does this example require a special Indian API key?
No India-specific key or endpoint is documented. Use the current key from the CaptureKit dashboard and check with the provider for region-specific billing or data-handling questions.
Can this pattern return a PDF instead of an image?
Yes. The endpoint documents PDF output; set the supported format accordingly and handle the returned bytes as a PDF rather than saving them with an image extension.
Quick Recap
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.
Free tools Windows power users keep installed
One-click scans. No signup required.
