Free — runs entirely in your browser
X (Twitter) Post Image Resizer (1200 × 675)
Resize images to the exact 16:9 size X displays in the timeline, so nothing gets cropped after you post.
Drop images here, or click to browse
JPEG, PNG, WebP · one image free, batch requires the Pro Pass
Target dimensions
Output format
Output: 1200 × 675 · WEBP · 90% quality
X (Twitter) Post size details & FAQ
Resize images to the exact 16:9 size X displays in the timeline, so nothing gets cropped after you post.
Privacy
Browser-native safety
Every resize runs on the Canvas API inside your tab. Files are never sent to a server, so there's nothing to leak.
Speed
Zero upload latency
No round trip to a backend — output is ready the instant the browser finishes drawing the canvas.
Fidelity
Perfect aspect ratio
Presets are locked to their platform's exact ratio, with a warning before any crop would clip your subject.
Other X sizes
Frequently asked questions
Yes. Resizing a single image to any preset, including the 1200×675 x (twitter) post size, is free with no account and no watermark.