Placehold.it. Useful dynamic image generator for layout mockups—just drop an image in to a page pointing at http://placehold.it/300x200. Takes optional arguments for text, colour and format as well.
Recent articles
- Nano Banana Pro aka gemini-3-pro-image-preview is the best available image generation model - 20th November 2025
- How I automate my Substack newsletter with content from my blog - 19th November 2025
- Trying out Gemini 3 Pro with audio transcription and a new pelican benchmark - 18th November 2025