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    Placeholder Image Generator

    Generate custom placeholder images for wireframes and mockups. Set size, colours, and custom text.

    Free to use. Runs in your browser.

    Enter a width, height, and optional text to generate a placeholder image as PNG or SVG. Useful for mockups, wireframes, and lorem-ipsum layouts.

    Why Placeholder Images Matter in Design

    Every designer and developer hits the same wall: you're building a layout, but the real images aren't ready yet. You could leave empty boxes, but that gives you zero sense of how the final page will actually feel. Placeholder images solve this by filling those gaps with correctly-sized graphics that show exactly where content will go.

    Think of placeholders like scaffolding on a building site. They aren't the finished product, but they let you see the proportions, test the spacing, and catch layout issues before the real materials arrive. Without them, you're designing blind.

    This generator creates placeholder images entirely in your browser using the Canvas API. Nothing gets uploaded, you pick your dimensions, colours, and optional text, then download a PNG instantly.

    Common Placeholder Sizes

    These are the dimensions you'll reach for most often, based on standard web and social media layouts:

    Use CaseWidthHeightAspect Ratio
    Hero Banner1920108016:9
    Blog Featured Image1200630~1.9:1
    Open Graph / Social Share1200630~1.9:1
    Product Thumbnail4004001:1
    Avatar / Profile Picture2002001:1
    Instagram Post108010801:1
    YouTube Thumbnail128072016:9
    Mobile App Icon5125121:1

    What this means for you: Keep this table handy when starting a new project. Using the right placeholder size from day one means fewer layout surprises when real images arrive.

    When to Use Placeholder Images

    Wireframing

    Low-fidelity layouts need image placeholders to communicate structure to stakeholders. Solid-colour blocks with dimension labels make proportions clear at a glance.

    Frontend Development

    When building components before assets are ready, placeholder images let you test responsive behaviour, lazy loading, and image containers with real dimensions.

    Client Presentations

    Custom-coloured placeholders that match a brand palette look far more professional than random stock photos or broken image icons in a mockup.

    Documentation & Tutorials

    When writing guides or README files, placeholder images demonstrate layout examples without requiring actual photography or licensed assets.

    Tips for Better Placeholders

    Match your brand colours. Using your project's background and accent colours in placeholders gives stakeholders a much more accurate preview. Generic grey boxes tell them nothing about the final feel.

    Add descriptive text. Instead of just showing "800 × 600", add labels like "Hero Image" or "Product Photo" so anyone looking at the layout knows what goes where.

    Use the right aspect ratio. If your final images will be 16:9, don't test with 1:1 placeholders. Mismatched ratios hide cropping and overflow issues that'll bite you later.

    Generate at the actual display size. Creating a 4000×3000 placeholder for a 400×300 thumbnail wastes filesize and doesn't test the real rendering path. Match the intended display dimensions.

    This Tool vs URL-Based Services

    FeatureThis ToolURL Services (placehold.co, etc.)
    Works offlineYes, runs in browserNo, requires internet
    Custom coloursFull colour pickerLimited to hex codes in URL
    Custom textAny text, font sizeURL-encoded text only
    Download filePNG downloadLinked via URL (no download)
    Use in HTML/CSSNeed to host the fileDirect URL in src attribute

    Use this tool when you need a downloadable file with custom branding. Use URL-based services when you want quick inline placeholders in HTML prototypes that don't need to persist.

    Related Tools

    Image Resizer

    Resize images to exact dimensions

    Favicon Generator

    Create favicons from any image

    Image Compressor

    Reduce image file sizes

    Aspect Ratio Calculator

    Calculate and convert aspect ratios

    Colour Palette Generator

    Generate colour schemes for your placeholders

    Image to WebP

    Convert images to WebP format

    How to use this tool

    1

    Set your desired width and height in pixels

    2

    Choose background and text colours to match your project

    3

    Click Generate Image, then download the PNG

    Common uses

    • Creating correctly-sized placeholders for wireframes and mockups
    • Testing responsive image layouts during frontend development
    • Filling design prototypes before real photography is available
    • Generating branded placeholder graphics for client presentations

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    Frequently Asked Questions

    What is a placeholder image?
    A placeholder image is a temporary image used during design and development to represent where real content will go. It fills layout gaps while real assets are being prepared.
    Can I customise the colours?
    Yes. Set both background and text colours using the colour pickers. Match your brand palette for more realistic mockups.
    What format is the download?
    Images are generated as PNG files using the HTML Canvas API, entirely in your browser. No server upload needed.
    What's the maximum image size?
    Canvas limits depend on your browser, typically up to 16,384×16,384 pixels. For most web use, dimensions under 4,000px are sufficient.
    Can I add custom text?
    Yes. By default, the image shows its dimensions (e.g. '800 × 600'). Enter custom text to label placeholders with their intended content like 'Hero Image' or 'Product Photo'.
    Are the images retina-ready?
    The image is generated at the exact pixel dimensions you specify. For Retina displays (2× DPR), generate at double your CSS dimensions, e.g. 1600×1200 for a 800×600 display slot.
    Can I use these in production?
    You can, but they're designed for development and mockups. For production, replace them with actual images optimised for your layout.
    Does it work offline?
    Yes. Once the page is loaded, the Canvas API generates images locally without any network requests.
    What common sizes should I use?
    Common sizes include 1200×630 (social share), 1920×1080 (hero banner), 400×400 (thumbnail), and 512×512 (app icon). Match your layout's actual image slots.
    Is the image quality adjustable?
    PNG is lossless, so quality is always maximum. The file size depends on dimensions and colour complexity, solid-colour placeholders are very small.
    Do you store my images?
    No. Everything happens in your browser using the Canvas API. Nothing is uploaded or stored on any server.
    Can I generate SVG instead?
    This tool generates PNG files. For SVG placeholders, you'd need to write SVG markup directly. PNGs work universally across all platforms and email clients.

    Results are for general informational purposes only and should be checked before use. They are not professional advice. See our Disclaimer and Terms of Service.