✳ FREE, NO UPLOAD
X (Twitter) post image size
1600×900 pixels (1.78:1). 16:9 previews in full without cropping in the timeline; taller images get cut off until tapped.
- Width
- 1600 px
- Height
- 900 px
- Recommended format
- JPEG or PNG
Resize your image to exactly this
Batch is unlimited and free - every image is processed on your device, so there is no queue and no daily cap.
Dimension guidance reviewed 12 September 2026 · how we check this
Frequently asked
What size should a X (Twitter) post image be?
1600×900 pixels. 16:9 previews in full without cropping in the timeline; taller images get cut off until tapped.
What file format should I use?
JPEG for photographs and PNG where you need transparency or crisp text. This tool outputs JPEG at high quality.
Do I have to upload my image to use this?
No. The resize runs in your browser using the canvas API - the image never leaves your device, and there is no daily limit.
Koldflux exports covers and carousel slides already sized correctly for every channel you publish to.
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