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URLbox can turn a webpage URL into a preview image you can place in an Indian blog post, archive, or link card. Choose a URL, image format, and viewport dimensions, then use a render link or the JSON API. For images you need to keep, save a copy: the synchronous JSON API’s render URL expires after 30 days, according to URLbox’s Quick Start.
What you need before creating a preview image
- A URLbox account and the API key and secret from its dashboard. URLbox’s quick start describes a seven-day free trial; check its current terms before relying on trial availability.
- The webpage URL you want to show. URLbox also accepts HTML input, but a page URL is the straightforward choice for an article preview.
- A target display size or aspect ratio. Decide how large the image will appear in the blog card before choosing capture dimensions.
The workflow is the same for an Indian blog as for other blogs. URLbox’s documentation does not establish India-specific pricing, GST treatment, INR billing, or regional availability, so confirm those details directly with the provider if they affect your setup.
Choose the URLbox capture settings
Viewport and responsive layout
URLbox documents a default viewport of 1280 by 1024 pixels. Set the width and height deliberately if the screenshot should resemble a phone, tablet, or narrow card. A webpage can rearrange its layout at different widths, so use the viewport that best represents the page you want readers to see.
Image format and cropping
URLbox documents PNG, JPEG, WebP, and AVIF output. Select a format that your blog platform and readers support, balancing image quality against file size. Thumbnail width and height and image-fit controls let you resize or crop the result; inspect the output for cut-off headlines or important page details.
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Viewport capture, full page, or one element
Use a viewport screenshot for a compact preview card. If readers need to see more of the page, URLbox supports full-page capture. It also documents element selection, which can be useful when the page area you want is a specific component rather than the full viewport.
Create and embed a URLbox preview
- Create a URLbox account and retrieve your API key and secret from its dashboard.
- Choose the target page URL, desired output format, viewport dimensions, and any thumbnail or crop settings.
- Generate a render link and place it in an image element, or use the JSON API for server-side workflows and synchronous or asynchronous rendering. See URLbox’s render options for supported controls.
- Open the result in the actual blog layout. Check that the crop, legibility, and aspect ratio work at the image’s displayed size.
- If the image must remain available beyond the temporary API link, download it to your blog’s media storage or configure URLbox cloud storage.
URLbox’s direct render-link workflow is intended for embedding, but production links should be secured. Its quick start describes secure render links signed with HMAC-SHA256 using the query-string options and secret key. The JSON API uses the secret as a Bearer token. Keep secrets on your server rather than exposing them in public blog markup. Follow the current authentication instructions in the URLbox Quick Start when implementing the link or API request.
Make the preview fit an Indian blog layout
- Match the capture’s aspect ratio to the card or featured-image slot used by your theme; a crop designed for a wide card may not suit a square archive tile.
- Review the result at the size readers will see, not just at its original dimensions. Small text may be unreadable in a thumbnail even when the capture itself is sharp.
- Check the crop after changing viewport size or fit settings. Important titles, navigation, or the page’s main image can fall outside the selected area.
- Remember that the source website can change after capture. Regenerate the preview when an updated image is important to the accuracy of the post.
Keep generated images available
URLbox states that the synchronous JSON API’s renderUrl expires after 30 days. Do not treat that temporary URL as permanent blog media. Download the resulting image into your blog’s media library or configure cloud-bucket storage through URLbox if durable access is required. The documentation cited here establishes the 30-day expiry for the synchronous JSON API response; check the current API documentation for the behavior of the specific workflow you use.
Or skip the browser setup
ScreenshotNeo provides a website screenshot API and MCP server. Its API accepts a URL in one GET request and can return PNG, JPEG, WebP, or PDF. The example below requests a WebP shot; see the ScreenshotNeo documentation for request options.
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Troubleshooting URLbox previews
The render link or image does not load
Check that the target URL is valid and that the render link was generated with the required options and authentication. For production use, follow URLbox’s secure-link signing instructions; do not expose the secret in client-side markup.
The preview is cropped incorrectly
Adjust the viewport and thumbnail dimensions or image-fit behavior, then render again. Compare the result against the actual dimensions of the blog card, and verify that the page’s responsive layout has not moved the important content.
The page looks different from what readers see
Test a viewport that matches the intended display, since responsive pages may render differently at different widths. Also remember that the source page can change, so an older screenshot may no longer match it.
A saved render URL stops working
If you are using the synchronous JSON API’s renderUrl, its documented 30-day expiration may be the cause. Save the image to your own media storage or configure cloud storage rather than relying on the temporary link.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Questions to settle before publishing
For a one-off preview, a render link may be enough. For a site that needs controlled authentication, durable files, or an asynchronous workflow, evaluate the JSON API and storage choices. In either case, test the rendered image in the blog’s real design before publishing, because capture dimensions and cropping affect what readers can actually see.
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