SVG Placeholder Generator: Dummy Images for Prototyping
Type a width, a height and a label, pick two colors, and get a tiny, razor-sharp SVG placeholder that scales forever. Copy the markup, grab a ready-to-paste data URI, or download SVG/PNG, all generated in your browser.
What is the svg placeholder generator?
The SVG Placeholder Generator makes lightweight prototype placeholder images from a set width, height and custom label plus background and foreground colors. Copy the razor-sharp scalable SVG, grab a ready data URI, or download SVG or PNG. Free, with presets and live preview, generated in your browser.
The GigAI SVG Placeholder Generator makes the clean grey (or on-brand) boxes you drop into a layout while the real imagery is still being shot, cropped or exported. Instead of a heavy JPEG or a third-party placeholder URL that phones home and breaks offline, you get a single SVG: a colored rectangle with a centred caption: by default the image's own dimensions, so the box literally tells you how big it is. Set the width and height in pixels, type any label you like (a ratio, a component name, ‘Hero image’, an emoji), and pick the background and text colors with native pickers. Because the result is a vector, one ~250-byte file stays perfectly crisp at any size and on any pixel density, unlike a raster placeholder that blurs the moment it's scaled. Copy the SVG markup for your JSX or template, or switch to a URL-optimized data URI you can paste straight into an <img src>, a CSS background-image or a Tailwind class with zero extra network requests. Need a real bitmap for a tool that won't take SVG? Export a transparent-free PNG at 2× from the browser canvas. Live preview updates as you type, undo/redo walks back every tweak, one-click presets cover the common ad and social sizes, and nothing (not your labels, not your colors) ever leaves the tab.
- Difficulty:
- Easy
- Typical time:
- ~10s
- Processing:
- 100% browser processing
Last updated
How to use the svg placeholder generator
- 1
Set the dimensions
Type a width and height, or pick a preset like 16:9, square or a banner size. The caption updates to match unless you've set a custom label.
- 2
Add a label & colors
Leave the default ‘W × H’ or type your own text, then choose background and text colors to match your design. The preview redraws as you go.
- 3
Choose your output
Copy the SVG markup for code, switch to a data URI to paste into an <img> or CSS, or download a scalable .svg or a .png at 2×.
- 4
Iterate freely
Tweak sizes and labels for each slot in your layout. Undo/redo steps back through everything and Reset returns to defaults.
What SVG Placeholder Generator includes
Any size, exact pixels
Set width and height directly in pixels or start from a preset (16:9, square, banner, avatar). The caption defaults to the live dimensions, so the placeholder documents its own size.
Custom label, your words
Replace the default ‘W × H’ with anything, a ratio, a component name, ‘Hero image’, an emoji. Font size auto-scales to the box, or override it to taste.
Background & text colors
Pick the fill and caption colors with native pickers or type a hex. Match your design tokens so the placeholders read as intentional, not accidental.
One-click data URI
Toggle to a URL-optimized data URI and paste it straight into an <img src>, a CSS background-image or a Tailwind arbitrary value. No file, no extra request, works offline.
SVG or PNG export
Download a scalable .svg that stays crisp forever, or rasterise a .png at 2× on the browser canvas for tools and mockups that won't accept vectors.
Presets, undo & live preview
Common ad and social sizes are one click away, a big preview updates as you type, and full undo/redo walks back every dimension, label and color you've tried.
Why use our svg placeholder generator
Reserve the layout in seconds
Drop a clean, correctly-sized box into your grid so spacing, aspect ratio and reflow are right long before the real image lands. No design app, no stock placeholder service.
Bytes, not kilobytes
A labelled SVG placeholder is roughly a quarter of a kilobyte and scales to any resolution. Swap out a bloated dummy JPEG and your prototype loads instantly.
No external placeholder URLs
Unlike hosted placeholder services, nothing is fetched from a third party. Your data URI is self-contained, so the prototype renders offline, in Storybook, and behind a firewall.
On-brand, not off-the-shelf grey
Set the colors to your palette and the label to real component names so stakeholders see an intentional wireframe instead of a jarring stock box.
Built for the way you work
From quick one-off fixes to daily workflows, see how people put this tool to use.
- Frontend developer
Fill an image slot before assets land
Paste a data-URI placeholder into an <img> or CSS background so a component renders with the right dimensions in Storybook and dev builds while the real graphic is still in production.
- Product designer
On-brand wireframe boxes
Generate correctly-sized boxes in the brand palette, labelled with real component names, so early prototypes and design reviews read as intentional rather than unfinished.
- QA & content teams
Test responsive layouts
Swap in placeholders at exact ad, hero and thumbnail sizes to check reflow, cropping and lazy-loading behaviour without waiting on final imagery.
- Email & docs
Mockup imagery for slides & templates
Export a PNG placeholder for a deck, an email template or documentation where a labelled box communicates ‘image goes here’ at the right proportions.
Supported formats
Everything is processed locally in your browser, your files never leave your device.
- SVG
- PNG
Frequently asked questions
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Common problems, solved
Hit a snag? Here are quick fixes for the issues people run into most.
My label is cut off or overflows the box.
The auto font size scales to the shorter side, but long custom labels can still spill on a very narrow placeholder. Lower the font-size override, shorten the text, or make the box wider. The caption is centred and won't wrap.
The data URI doesn't render in my <img> tag.
Make sure you copied the whole string including the leading data:image/svg+xml prefix, and that it's wrapped in quotes in the src attribute. If a strict CSP blocks inline SVG, use the downloaded .svg file as a normal src instead.
The PNG looks soft when I scale it up.
PNG is raster and only holds the pixels you exported. Increase the width and height before exporting, or use the SVG: it's resolution-independent and stays sharp at any size.
The text color is invisible against the background.
Foreground and background are too close in luminance. Pick a darker text color on a light box (or vice-versa) so the caption keeps enough contrast to stay readable.
Get the most out of it
Leave the label empty-of-custom-text to let it auto-track the dimensions, the box then always states its own size, which is handy in a busy layout.
Use a data URI for throwaway prototypes and the downloaded .svg file once a placeholder is part of a committed component.
Match the background to a muted brand tone and the text to your body color so placeholders read as intentional wireframe, not raw grey.
Set the label to the real component or slot name (‘Product card’, ‘Avatar’) so reviewers know exactly what each box will become.
Prefer SVG over PNG wherever the target accepts it, it's a fraction of the size and stays crisp on every screen.
What's new
Recent updates and improvements to the svg placeholder generator.
Initial release, width/height, custom label and background/foreground colors with a live preview, SVG + data-URI output and SVG/PNG export.
Added one-click size presets (16:9, square, banner, avatar, story), a font-size override, undo/redo across every change, and keyboard shortcuts.
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Your privacy is built in
Every placeholder is generated in your browser, the SVG, the data URI and the PNG rasterisation all run locally on your device. Your dimensions, labels and colors are never uploaded, stored or logged, and no third-party placeholder service is contacted, so the tool works fully offline and closing the tab leaves nothing behind.
- Runs in your browser
- No uploads
- Nothing stored
Ready to try the svg placeholder generator?
Free, private and instant. SVG Placeholder Generator runs right in your browser.