betterimage.io - One card, every size you post.
betterimage.io is a social card and OG image editor. Paste a post URL and it reads the page's title, description, author and images, picks a design that fits and shows four variants, or start from one of 100+ ready-made designs for blog posts, launches, quotes, testimonials, events, podcasts and product listings. One card exports at every size you post: 1200x630 link preview, YouTube thumbnail, Instagram square and portrait, story and Pinterest pin, and the preview is the exact file you download. The editor and watermarked downloads are free with no signup; $4.99 once removes the mark. For developers there are signed og:image URLs, a REST API, a zero-dependency npm package and an MCP server for Claude, Cursor and VS Code.