Imageslot API Examples: Hands-On Demos for Every Use Case

Explore real-world Imageslot API examples for avatars, banners, card images, overlays, and accessible placeholders. Each demo includes a live API image, annotated code, and best practice tips—so you can copy, adapt, and integrate Imageslot into your next web project instantly.

Developer using Imageslot API to generate placeholder images for a web project

Quick Overview: What Can You Do with Imageslot API?

Avatars & Profiles

Generate avatars, initials, or user placeholders in any color or size.

See Example

Banners & Heroes

Create banner, hero, and section images for layouts and wireframes.

See Example

Cards & Grids

Fill card, gallery, or tile layouts with matching aspect ratio placeholders.

See Example

Text Overlays

Add custom text, font size, bold & italic to any placeholder image.

See Example

How to Use Imageslot API for Avatars in Web Apps

Avatar and profile placeholders improve user experience in social apps, comment sections, and user dashboards. With Imageslot, you can generate on-the-fly avatars with initials, brand colors, or random backgrounds—no static assets required.

avatar placeholder with initials JD on green background||avatar placeholder, user profile, initials, web app#|#Live demo: Imageslot API avatar placeholder showing initials JD with a green background#|#avatar-placeholder-jd.png
<img src="https://imageslot.com/v1/120x120?bg=3DA35D&fg=fff&text=JD&filetype=png" alt="User avatar placeholder">
// Generates a 120x120px PNG avatar with initials "JD" and green background
Pro Tip: You can randomize initials or background color for each user by updating the text= and bg= parameters server-side or with JavaScript.
See all text options

Imageslot Banner Image Example: Responsive Heroes & Section Headers

Banner and hero images are essential for modern web layouts. Imageslot lets you instantly create full-width demo banners for landing pages, blog headers, and app sections—customizable in size, color, and format for perfect layout fit.

banner placeholder, hero image, wide aspect ratio||banner placeholder, hero header, web landing page, wide image#|#Imageslot API banner image placeholder for hero section, white text on blue background#|#banner-placeholder-hero.jpg
<img src="https://imageslot.com/v1/1200x400?bg=173559&fg=fff&text=Hero+Banner&filetype=jpg" alt="Section banner placeholder">
// 1200x400px JPG, white text on deep blue for hero/section headers
Accessibility: Always set alt text to describe the image's role or content. For decorative placeholders, use alt="".
Compare formats

Responsive Card Image Placeholder API Example

Cards and grid layouts need flexible images that match your aspect ratio and design intent. With Imageslot, you can tailor placeholder dimensions for product cards, blog previews, or gallery tiles—ensuring visually stable, responsive layouts.

card placeholder image, gray background, modern web design||card image placeholder, grid layout, ui design, aspect ratio#|#Imageslot card image placeholder in a typical card/grid aspect ratio#|#card-placeholder-grid.png
<img src="https://imageslot.com/v1/400x250?bg=ececec&fg=23272f&text=Card+Image&filetype=png" alt="Card image placeholder">
// 400x250px PNG, gray with dark text, ideal for cards, tiles, grids
Best Practice: Match your placeholder's aspect ratio to your real images for zero layout shift. Learn more about image sizes.
Read Sizing Guide

Text Overlay Placeholder API Demo: Headings & Labels

Need to demo headlines, button labels, or custom text in your design? The Imageslot API supports text=, fontsize=, bold, and italic—so you can show realistic headings, calls-to-action, or product names right in your wireframes.

text overlay placeholder, bold heading, teal background||text overlay placeholder, headline, web design, banner demo#|#Imageslot text overlay placeholder for banner or section heading demo#|#text-overlay-placeholder.png
<img src="https://imageslot.com/v1/600x100?bg=1A726B&fg=fff&text=Overlay+Demo&bold=1&fontsize=32&filetype=png" alt="Text overlay placeholder">
// 600x100px PNG, bold white text on teal, for banners/headings
Tip: For maximum readability, use strong contrast between bg= and fg= colors. Accessibility tips
Custom Text Options

Accessible Placeholder Images with Imageslot API

Accessibility is essential for all users. Imageslot helps you create high-contrast placeholders and lets you set custom alt text and ARIA labels for screen readers. You can even simulate accessible states in your prototypes and UI tests.

accessible placeholder, high contrast text, white background||accessible placeholder image, high contrast, alt text demo#|#Accessible placeholder image with high contrast text and alt attribute set#|#accessible-placeholder-demo.png
<img src="https://imageslot.com/v1/320x120?bg=fff&fg=23272f&text=Accessible&filetype=png" alt="Accessible placeholder image for user profile" aria-label="User profile placeholder">
// High-contrast, alt + ARIA for screenreader support
Tip: Use bg=fff and fg=23272f for high-contrast accessible placeholders. Always describe purpose in alt text.
Accessibility Guide

Frequently Asked Questions: Imageslot API Usage

Simply set the desired width and height in the API URL, e.g. /v1/500x300?filetype=png. You can generate sizes on-the-fly via templates or variables in your code. For full guidance, see Image Sizing Guide.

Yes! Use the text= parameter for any custom label, headline, or initials. You can also adjust font size, bold, italic, and more. See Text Overlay Example above or full text styling features.

Always specify width and height in your <img> tag to avoid layout shift. Use descriptive alt text for SEO and accessibility. Choose the smallest suitable image size and serve images via CDN for best performance. Read more.

Yes—Imageslot is designed for fast CDN delivery and robust integration with any stack. For production, use the correct filetype, set cache headers, and replace with real images as soon as they're available. Review integration guides for more.

Just build a URL like /v1/350x200?bg=ececec&fg=23272f&text=Demo&filetype=png and use it in your <img>, Figma, or code. You can generate as many as you need for layouts, wireframes, presentations, or rapid prototyping. See all features.