Best Image Size for Tumblr Posts

Resize images to ideal Tumblr post and profile dimensions — free online tool.

Getting the right image dimensions for social media platforms is essential for engagement, reach, and professional presentation. This guide covers the exact specifications for Tumblr Posts and shows you how to prepare your images to the correct dimensions using the free tools at imgresizr.com.

Recommended Image Specifications for Tumblr Posts

ParameterRecommended Value
Profile image400 × 400 px
Post / feed image1080 × 1080 px
Story / vertical format1080 × 1920 px
Cover / banner1500 × 500 px
File formatJPG or PNG
Max file size5 MB

How to Prepare Images for Tumblr Posts

Upload your image to imgresizr.com. Select the Resize tab. Enter the correct dimensions for Tumblr Posts as shown in the table above. Use the lock icon to maintain the aspect ratio if you only know one dimension. Click Resize to process your image. Download the result — your image is now correctly sized for Tumblr Posts. All processing happens in your browser; your image is never uploaded to any server.

Tips for Tumblr Posts

  • Always check the latest platform specifications — social networks update image requirements regularly
  • Use square (1:1) format images when sharing across multiple platforms — they adapt well to most layouts
  • Compress images below 500 KB to ensure fast loading on mobile connections
  • Consistent image style across posts builds brand recognition and audience trust
  • Test your profile photo at small sizes — many platforms display avatars at 40–50 px in feeds

Resize images for Tumblr Posts instantly, free at imgresizr.com.