Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Clear out junk files and repair common Windows errors3Scan for outdated or missing drivers - takes under a minuteTo take a screenshot with GrabzIt’s JavaScript API, load its JavaScript library, use an application key authorized for the domain running your code, choose a source method such as ConvertURL, then handle the asynchronous result with onfinish. The API can convert a URL, supplied HTML, or the current page; it can display the result in the page, keep it hidden, or return it as a data URL. This guide shows the core flow and the choices that matter when configuring and saving captures.
Before you write the capture code
You need a GrabzIt application key and a page hosted on a domain authorized for that key. GrabzIt’s setup instructions state that the JavaScript API will not work until the domain is configured. This also helps prevent another site from using your key and consuming account resources. Follow the current JavaScript API setup instructions for the current library include and domain-authorization steps; the documentation may change, and the material available here does not establish a library release version.
Keep any application secret or storage credentials out of browser code. Browser-side JavaScript is visible to visitors. Use the JavaScript API for the client-side capture flow, and put retrieval or storage operations that require secret credentials behind a protected server endpoint.
Choose what to capture
GrabzIt provides three source methods. Each accepts an optional options object for capture settings.
The Tool Desk
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| Method | Use it for |
|---|---|
ConvertURL(url, options) |
A page identified by a URL. |
ConvertHTML(html, options) |
HTML markup supplied by your application. |
ConvertPage(options) |
The visitor’s current page. |
Choose ConvertURL when the target is an independently addressable page, ConvertHTML when you need to render markup you already have, and ConvertPage when the page currently open in the browser is the source.
Load the library and start a capture
Use GrabzIt’s current official code sample for the library URL and initialization pattern. The following illustrates the documented conversion and completion flow; replace the key, target URL, and options with your values, and verify the current CDN include in the live documentation before deploying.
<script src="https://cdn.grabz.it/javascript/ grabzit.min.js"></script>
<script>
const grabzIt = new GrabzIt("YOUR_APPLICATION_KEY");
grabzIt.ConvertURL("https://example.com", {
format: "png",
bwidth: 1280,
bheight: 800,
onfinish: function (captureId) {
console.log("Capture ready:", captureId);
},
onerror: function (error) {
console.error("Capture failed:", error);
}
}).Create();
</script>The CDN path above is illustrative rather than a verified current package URL; copy the exact script include and constructor syntax from GrabzIt’s JavaScript documentation before use. The documented API accepts optional JSON capture parameters, and onfinish receives the capture ID when the screenshot is ready. Error callbacks and supported settings are described in the live parameter and event reference.
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Choose how the result is returned
The conversion method starts the capture; the result method controls what happens with the completed output.
Create()inserts the capture at the beginning of the document body, or at the document root if there is no body.AddTo(elementOrId)puts the result in a particular page element. Supply the target element or its ID as documented.CreateInvisible()creates the capture without displaying it on the page.DataURI(callback, decrypt)passes a base64 data URL to a callback. The optionaldecryptargument is for encrypted captures.
For example, if the page should show the screenshot in a known container, use the documented AddTo result method instead of inserting it at the start of the body. Use a data URL when subsequent client-side code needs the encoded result. Choose invisible creation when the capture is needed for processing rather than presentation. Check the current JavaScript API reference for exact method chaining and callback syntax.
Configure dimensions, timing, and output
Capture settings are optional, but choosing the right ones avoids confusing a browser viewport with the dimensions of the resulting image.
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- Output format: The parameter reference lists formats including JPG, PNG, and PDF, along with other capture or export types. Select a format that suits whether the result is an image or document.
- Browser dimensions:
bwidthandbheightset the browser dimensions used to render the source. The reference lists a maximum of 10,000 pixels for browser dimensions; check the current reference and account package before relying on that limit. - Output dimensions:
widthandheightdescribe output image dimensions, not the browser viewport. Output-size maxima can depend on the account package, so there is no single universal maximum to assume. - Timing: Use
delaywhen a fixed wait is appropriate. The reference lists a maximum of 30,000 milliseconds. For pages that reveal content after a specific event,waitforcan wait for a matching visible element; its documented maximum wait is 25 seconds. - Full-page capture: The reference documents a full-length option where supported. Confirm that it applies to your chosen output type and package.
For exact parameter names, defaults, combinations, and account-dependent limits, use the live GrabzIt JavaScript parameter reference. The available documentation does not establish one set of defaults or output-size limits that applies to every format and package.
Handle completion and retrieve the capture
Captures complete asynchronously. The event reference describes onstart, onfinish, and error handling. Use onfinish to learn that the result is ready; its capture ID can then be passed to server-side code that retrieves the result.
A typical persistence flow is:
- Start the conversion from the browser.
- In
onfinish, send the capture ID to an application endpoint you control. - On the server, validate the request and the capture ID, then use a server-side GrabzIt API such as PHP
GetResultto retrieve the capture bytes. - Write the bytes to a location your application controls and return an appropriate status to the client.
The support example demonstrates the capture-ID-to-server-retrieval pattern, but it is not a complete security design. Protect your endpoint against unauthorized requests, validate its inputs, and do not place the application secret in client-side code. If using storage export, GrabzIt’s support guidance recommends its Secure Export URL option so browser code does not expose storage credentials.
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Troubleshoot common failures
- The API does not work on the page: Confirm that the page’s domain is authorized for the application key and that the library is loaded from the current documented URL.
- The callback never reports a ready capture: Check the browser console and network requests, verify the URL or HTML source, and add the documented error callback. Review the event and parameter reference for the current error behavior.
- The screenshot misses late-loading content: A fixed delay may be too short or waste time. Use a suitable
waitforselector when a visible element indicates that the needed content has loaded; ensure that the selector exists and becomes visible. - The image has unexpected dimensions: Check whether you set browser dimensions (
bwidth/bheight) or output dimensions (width/height), and verify the selected format’s limits for your package. - The result is not saved on your server: A capture ID is not itself the image file. Have a protected server endpoint retrieve the result through a server-side API and write the returned bytes.
- Credentials are exposed: Remove storage secrets from browser JavaScript. Use a server-side retrieval or GrabzIt’s Secure Export URL option as applicable.
Or skip the browser setup
ScreenshotNeo is a website screenshot API and MCP server for developers. A GET request can return a PNG, JPEG, WebP, or PDF. Its capture flow accepts cookie banners like a visitor and removes more than 60 known consent platforms, newsletter popups, and chat widgets before the shot; each step can be disabled. Bot checks and CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and responses identify the page verdict and billing status in headers. Its MCP server provides take_screenshot, get_page_info, and capture_pdf for AI agents and other MCP clients.
One cURL request looks like this (see the ScreenshotNeo API documentation for the current options and response details):
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpFor JavaScript, use the Node.js example below. It writes the response body to the process output; save it to a file or handle it in your application as needed.
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const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);Python equivalent:
import requests
r = requests.get("https://api.screenshotneo.com/v1/shot", params={"access_key": "YOUR_API_KEY", "url": "https://stripe.com"}, timeout=90)
open("shot.webp", "wb").write(r.content)The free plan includes 1,000 screenshots a month with no card; paid plans start at $5 for 3,000. Sign up for ScreenshotNeo free to try it without a card.
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- 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.
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- 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
Can I use GrabzIt to capture HTML that is not hosted at a public URL?
Yes. Use ConvertHTML to submit markup directly instead of capturing a URL.
Does onfinish return the screenshot image itself?
It supplies a capture ID. Use a documented result method or retrieve the capture through server-side code.
Quick Recap
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