WordPress themes use different featured image sizes. The most common is 1200×628px (Facebook/Twitter link preview ratio) or your theme square thumbnail size.
WordPress Image Dimensions 2026
| Format | Dimensions | Notes |
|---|---|---|
| Featured image (standard) | 1200 × 628 px | Works for most themes and social sharing |
| Square thumbnail | 1080 × 1080 px | For themes using square post thumbnails |
| Wide banner | 1920 × 600 px | For full-width page hero sections |
| Gallery image | 800 × 600 px | Standard 4:3 for photo galleries |
| Max upload size | Depends on hosting | Usually 8-64 MB; configurable in PHP settings |
Tips
- Use the highest resolution original for best quality — resize down, never up
- Save as JPG for photos, PNG for graphics with text or transparent background
- Use Fourmeld Image Tools to resize to exact WordPress dimensions free
FAQs
What happens if I use the wrong WordPress image size?
The platform auto-crops or compresses the image, often cutting off important content or reducing quality.
Should I resize before uploading?
Yes — pre-sizing to the exact dimensions prevents the platform from applying additional compression.
What image format is best?
JPG at 80-90% quality for photos. PNG for graphics with text. WebP for websites.
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