Tumblr Blog Header Resizer3000 × 1055 px
Resize any image to exactly 3000×1055px for Tumblr. Free, instant, and nothing leaves your browser.
- Dimensions
- 3000 × 1055 px
- Aspect ratio
- 2.84:1
- Max file size
- 20MB
- Best format
- JPG
How to resize an image for Tumblr
Add your image
Click Choose image or drop a file into the box above. JPG, PNG and WebP all work.
Check the crop
The preset is already set to 3000×1055px. Drag inside the preview if you want to reposition the crop.
Download
Pick a format and click Download. You get a Tumblr Blog Header at exactly 3000×1055px.
Tumblr Blog Header size at a glance
Tumblr blog headers vary by theme, but 3000×1055 works well for most built-in and popular custom themes. The large size ensures sharpness on high-DPI screens.
Why 3000×1055 matters
Blog customization is central to Tumblr culture. A well-sized header sets the tone for the entire blog and is often the first thing visitors notice.
What happens when the size is wrong
Undersized headers look pixelated on retina screens. Wrong ratios get cropped differently depending on the active theme, creating unpredictable results.
Best practices
- Check your specific theme's recommended dimensions — they vary significantly.
- Keep important content centered since different themes crop differently.
- Test on both desktop and mobile as Tumblr themes often have separate mobile views.
Frequently asked questions
What size should a Tumblr Blog Header be?
The recommended size for a Tumblr Blog Header is 3000×1055 pixels (2.84:1 aspect ratio). The maximum file size is 20MB.
How do I resize an image for Tumblr Blog Header?
Upload your image to the resizer above. It will automatically crop and resize to 3000×1055px. Adjust the crop position if needed, then download the result. Your image never leaves your device.
Which format should I use for a Tumblr Blog Header?
Tumblr accepts JPG, PNG. We recommend JPG — Blog header size depends on the theme. 3000×1055 covers most built-in themes at high resolution.
Is my image uploaded anywhere?
No. TinyResize runs entirely in your browser. The file is read from your device, resized on your device, and downloaded from your device. Nothing is sent to a server.