Thumbnail· 5 min read
X (Twitter) Thumbnail Generator with AI (1200×675)
Generate 16:9 X (Twitter) post and link-card thumbnails with AI. Upload a photo, describe the vibe, export a 1200×675 PNG or JPG — free, no watermark.
X (formerly Twitter) shows in-feed images and link cards at roughly 16:9. 1200×675 hits the summary_large_image card size and is the safe upload for post images. Use AI to generate a bold horizontal composition that survives the feed's aggressive cropping.
Step-by-step
- Upload a reference photo.
- Pick the X (Twitter) preset (1200×675).
- Prompt: ‘subject on left third, minimal dark background, editorial style’.
- Generate, add a short headline (max 6 words).
- Export PNG or JPG.
X-specific tips
- In multi-image tweets X crops to a rough 16:9 — keep the subject centered vertically.
- For link previews, set the same 1200×675 image as twitter:image and og:image on your page.
- Small text disappears in the feed — 60 px+ at 1200×675 is the floor.
Try it now
Ready to put this into practice? Everything runs in your browser — no uploads, no signup.
Open the tool →