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Tumblr
Tumblr 1:1 · 128×128

Tumblr Profile

Resize any image to 128×128 pixels (1:1 aspect ratio) in your browser — no upload, no login, no paywall. Tumblr avatar spec.

Browser-side · your image never leaves your device
Unlimited

Drop an image here

or click to browse · JPEG / PNG / WebP · up to 50 MB

By uploading, you agree to our Terms of Service and Privacy Policy. Your images are processed locally in your browser and never leave your device.

Need to remove the background first? Try PicPeel →

Spec details

Output size
128×128
Aspect ratio
1:1
Max file size
1 MB
Formats
JPEG, PNG, GIF
lossless

💡 For best results, start with an image at least as wide as the target size. Upscaling small images can introduce blur.

Tumblr profile picture size: the 2026 spec

This guide covers the official spec, format requirements, and the practical workflow imgsize.cc uses to get it right in your browser.

Why these dimensions

Tumblr avatars render at 128×128 on profile visits and 32×32 in the dashboard. The recommended upload is 128×128. The 1:1 aspect ratio is mandatory — Tumblr auto-masks avatars with a rounded square.

Specification breakdown

The "safe area" inside the frame

Crop the central content of your image to the central 80% of the frame. Tumblr Profile may crop or overlay UI elements near the edges, so critical content should stay well within the safe zone.

Common mistakes

Frequently asked questions

Can I use an animated GIF avatar?

Yes! Tumblr supports animated avatars.

How imgsize.cc handles it

Drop your source image into the workbench above. The crop box defaults to a 1:1 aspect ratio. Resize, crop, and download as a 128×128 pixel PNG — all in your browser, no upload required.