ImageSmith / social media post generator
AI social media post generator
Promotions, announcements, tips and behind-the-scenes images for your feed, in the shapes each platform shows best.
Your image appears here.
Sizes you'll need
| Placement | Size | Note |
|---|---|---|
| Instagram feed | 1080 × 1350 (4:5) or 1080 × 1080 | Portrait takes more screen space |
| Facebook feed | 1080 × 1350 or 1200 × 630 | Portrait for mobile, landscape for link shares |
| LinkedIn post | 1200 × 1200 or 1200 × 627 | Square stands out in the feed |
| Pinterest pin | 1000 × 1500 (2:3) | Portrait strongly preferred |
From each platform's published guidelines; they change occasionally. The image resizer crops to any of them.
What works
- Decide the platform first; portrait (4:5) takes the most feed space on phones.
- Keep one message per post. If it needs a paragraph, put it in the caption.
- Name your brand colors in every prompt so a series looks consistent.
- Use the color palette generator to lock those colors down.
Questions people ask
Which shape is best for Instagram?
Portrait 4:5 (1080 × 1350) takes up the most space in the feed and usually performs best. Generate portrait here, then use the image resizer's Instagram preset.
Does it write the caption too?
This tool makes the image. For image ideas, the prompt generator writes detailed descriptions; keep the post's text short and write the caption in your own voice.
Will my posts look consistent?
Consistency comes from repeating the same style words and colors in every prompt, e.g. "flat illustration, sage green and cream, rounded shapes". Save a prompt you like and reuse it as a template.