Microlink’s documented screenshot flow returns a screenshot asset URL and image metadata; it does not document writing the screenshot directly to your S3 bucket. To save a capture in your bucket, request the screenshot from Microlink, fetch the returned asset on a trusted server, then upload its bytes to S3 with an object key of your choice.
How the Microlink-to-S3 workflow works
Microlink generates the screenshot; your application handles the transfer and storage. Microlink describes its screenshot parameter as generating a screenshot over the target URL, and its response example includes an asset URL plus image metadata. Its comparison page does not list native upload to your own storage as part of that flow. Microlink screenshot documentation · Microlink comparison page
- Send Microlink a request for the target page with screenshot enabled.
- Read the screenshot asset URL from the API response.
- Fetch that URL from your backend or another trusted application component and read the response bytes.
- Upload those bytes to S3 using a bucket name and object key.
The fetch-and-upload steps connect two documented interfaces: Microlink’s screenshot asset output and AWS’s S3 object upload operation. Confirm the precise response fields and content type for the Microlink options you use.
Runnable Node.js example
This example uses Microlink’s API to request a screenshot, then fetches the returned asset and sends it to S3 with AWS SDK for JavaScript v3. Set the environment variables before running it. The precise Microlink request and response fields can depend on the options and account setup, so check the screenshot documentation for the request shape you use.
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import { S3Client, PutObjectCommand } from "@aws-sdk/client-s3";
const targetUrl = process.env.TARGET_URL;
const bucketName = process.env.S3_BUCKET;
const objectKey = process.env.S3_KEY ?? "captures/page.jpg";
const microlinkKey = process.env.MICROLINK_API_KEY;
if (!targetUrl || !bucketName || !microlinkKey) {
throw new Error("Set TARGET_URL, S3_BUCKET, and MICROLINK_API_KEY");
}
const microlinkUrl = new URL("https://api.microlink.io/");
microlinkUrl.searchParams.set("url", targetUrl);
microlinkUrl.searchParams.set("screenshot", "true");
// Add Microlink authentication or other options here as required by your setup.
const captureResponse = await fetch(microlinkUrl, {
headers: { "x-api-key": microlinkKey },
});
if (!captureResponse.ok) {
throw new Error(`Microlink request failed: ${captureResponse.status}`);
}
const capture = await captureResponse.json();
const screenshotUrl = capture?.data?.screenshot?.url;
if (!screenshotUrl) {
throw new Error("Microlink response did not contain data.screenshot.url");
}
const imageResponse = await fetch(screenshotUrl);
if (!imageResponse.ok) {
throw new Error(`Screenshot asset fetch failed: ${imageResponse.status}`);
}
const imageBytes = new Uint8Array(await imageResponse.arrayBuffer());
const contentType = imageResponse.headers.get("content-type") ?? "application/octet-stream";
const s3 = new S3Client({ region: process.env.AWS_REGION });
await s3.send(new PutObjectCommand({
Bucket: bucketName,
Key: objectKey,
Body: imageBytes,
ContentType: contentType,
}));
console.log(`Saved screenshot to s3://${bucketName}/${objectKey}`);Install the AWS client package with npm install @aws-sdk/client-s3. AWS SDK credentials and region should be provided through the standard trusted server environment or role configuration for your deployment, not hard-coded in this script. The S3 operation shown is AWS SDK v3’s PutObjectCommand, which accepts a bucket, key, and body. AWS PutObject examples
Choose the S3 key and access behavior
Object key
An S3 object is identified by its bucket and key. Choose a deterministic key if each new capture should replace the same stored object, or include a timestamp or unique identifier when you need to retain separate captures. Make the naming and retention behavior an explicit application decision.
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Privacy and delivery
Do not assume Microlink’s returned asset URL is a permanent URL for your S3 object. Decide whether the uploaded object remains private or is made available through a controlled application or CDN path. Keep credentials out of browser code and public URLs; grant the server-side upload identity only the permissions needed for the chosen bucket workflow.
Failure handling, reliability, and cost
Treat the capture request, asset retrieval, and S3 upload as separate failure points. Check HTTP status at both fetch boundaries, validate that the screenshot URL exists, and surface S3 errors rather than reporting success prematurely. AWS’s PutObject examples discuss service errors, including oversized-object conditions. Add retries only where appropriate for your application, and make retries safe for your key strategy: reusing a deterministic key overwrites the same object, while unique keys can create additional retained objects.
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Microlink’s plan limits, prices, and availability can change; verify current details on its API page before estimating capture costs. This integration also stores an object in your AWS account, so consider the applicable S3 storage and request costs for your workload; no total cost can be inferred without your region, volume, retention, and access pattern.
Or skip the browser setup
ScreenshotNeo is a screenshot API and MCP server for developers. It can accept cookie or consent banners before capture and remove more than 60 known consent platforms, newsletter popups, and chat widgets; each step can be turned off. Bot checks, blank pages, timeouts, failed loads, and cache hits are not billed, and responses include page-verdict and billing headers. Its MCP server provides screenshot tools for Claude, Cursor, and other MCP clients.
For a simple screenshot request, call the API and save the returned image response. See the ScreenshotNeo documentation for API options and response handling:
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curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpScreenshotNeo returns the screenshot; to store it in S3, your application still needs to upload the resulting bytes to your bucket. The free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000. Sign up free for ScreenshotNeo.
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Frequently Asked Questions
Does Microlink upload the screenshot directly into my S3 bucket?
Its documented flow returns a screenshot asset URL; the application performs the fetch and S3 upload.
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Can I make the Microlink screenshot URL my permanent S3 URL?
No. The returned asset URL and your S3 object are separate resources; use your bucket and key, then configure delivery for the S3 object as needed.
Quick Recap
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