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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallPut the image and text in the same wrapper, make that wrapper position: relative, and position the text with position: absolute. React renders both elements; CSS places the text over the image. This web React pattern keeps the words as selectable, accessible HTML text rather than baking them into the image.
Build the overlay in React
Use a wrapper as the positioning reference. The text can be a caption, heading, button, or other JSX content.
function ImageWithText({ src, alt, children }) {
return (
<div className="image-overlay">
<img className="image-overlay__image" src={src} alt={alt} />
<div className="image-overlay__text">{children}</div>
</div>
);
}Render it with the image URL, appropriate alternative text, and the content to overlay:
<ImageWithText src="/images/mountain.jpg" alt="Snow-covered mountain above a lake">
<h2>A view worth the climb</h2>
</ImageWithText>React uses className to assign CSS classes. Keep the layout rules in a stylesheet:
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.image-overlay {
position: relative;
width: 100%;
aspect-ratio: 16 / 9;
overflow: hidden;
}
.image-overlay__image {
display: block;
width: 100%;
height: 100%;
object-fit: cover;
}
.image-overlay__text {
position: absolute;
inset: auto 1rem 1rem;
color: white;
background: rgb(0 0 0 / 65%);
padding: 0.75rem 1rem;
}The 16 / 9 aspect ratio is just an example; choose a shape that fits the design. The wrapper remains in normal document flow, while its positioned text is removed from normal flow and placed relative to that wrapper. Without position: relative on the intended wrapper, the text may instead align to a different positioned ancestor.
Fit the image without distorting it
The CSS above sizes the image to the wrapper, then uses object-fit to decide how the image fills that box. Choose based on whether cropping or empty space is acceptable:
object-fit: coverfills the box while preserving the image’s proportions, but may crop its edges.object-fit: containshows the complete image, preserving its proportions, but may leave unfilled space in the box.
Avoid relying on the default fill behavior when the image and box have different proportions: it can stretch and distort the image. object-fit affects a resized image element, so set its rendered width and height as in the example.
Keep the overlay readable and accessible
Use real text and check contrast
Keep the overlay words in JSX rather than drawing them into the image. Actual text can be selected and styled, and it scales better than text embedded in an image. Check contrast where the text appears on the actual photo: WCAG 2.2 guidance specifies at least 4.5:1 for normal text and 3:1 for large text, subject to the criterion’s exceptions. A translucent panel or gradient can help maintain contrast over varied backgrounds, but verify the resulting text/background combination.
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The image and overlay caption are separate content. For an informative image, give alt a concise description of the meaningful image content; do not merely write “image” or repeat the overlaid caption. If the image is decorative and the overlay already provides the relevant information, use alt="" so assistive technology can skip it.
When the words must become part of an image
For ordinary page content, a live HTML overlay is usually the more flexible choice. Text burned into an image or drawn on a canvas becomes image-like output, not ordinary text. Embedded text can be harder to scale and to adjust for foreground and background needs. If a canvas is used to produce a single composed graphic, provide an accessible description—for an image-like canvas, MDN recommends role="img" with an aria-label.
Troubleshoot common overlay problems
- Text appears in the wrong place: ensure the wrapper containing both elements has
position: relative, and that the text is positioned absolutely. Check for another positioned ancestor if it still uses the wrong reference. - Text and image drift apart when the layout changes: keep both inside the same wrapper and size the image to that wrapper.
- The image looks stretched: set the image’s rendered dimensions and choose
coverif cropping is acceptable orcontainif all image content must remain visible. - The caption disappears against part of the photo: check contrast over the exact region behind the text and add or adjust a backing panel or gradient.
- A screen reader announces the wrong thing: decide whether the image conveys information independently of the overlay, then provide descriptive
alttext oralt=""for a decorative image.
Or skip the browser setup
If your goal is a screenshot of a page that already contains the React overlay, ScreenshotNeo can capture the rendered page with one API request. It does not create the React component or replace the CSS implementation above.
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For example, capture a public page as WebP:
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpSee the ScreenshotNeo API documentation for parameters and response details. ScreenshotNeo removes cookie banners, popups, and chat widgets before the shot; bot checks, blank pages, and failed loads are never billed. Its MCP server lets AI agents take screenshots. The Free plan includes 1,000 screenshots a month with no card, and paid plans start at $5 for 3,000. Learn about ScreenshotNeo, then sign up free.
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