How do I use the placeholder image generator (SVG)?
- Set the width and height in pixels.
- Choose a background colour and optional label.
- Press Make placeholder and copy the SVG or data URI.
Placeholder image generator (SVG): frequently asked questions
Why SVG instead of PNG?
SVG placeholders are a few hundred bytes at any size and stay sharp on every screen.
What size is best for social share images?
1200×630 pixels, which works for Facebook, LinkedIn, WhatsApp and X.
What are placeholder images for?
Holding space in layouts and prototypes until real images are ready.
What sizes should I use?
Match the final aspect ratio, such as 1200×630 for social previews.
Can I add text to the placeholder?
Yes. Labels help reviewers see which image goes where.
Should placeholders go live?
No. Replace them with optimised images before launch.
What format should final images use?
WebP or AVIF for photos, SVG for logos and icons.
Do placeholders affect layout shift?
Reserving the right space prevents layout shift when images load.
What is the ideal OG image size?
1200×630 pixels.
Are generated images free to use?
Yes.