Clearer upload
Recommended512×512 1:1
Practical square for modern screens. Tumblr scales it down for dashboard and search.
Use in toolTumblr · Image size
Tumblr Profile Picture Size
Tumblr help lists an ideal avatar around 128×128. Export a clearer 512×512 square so dashboard thumbs stay readable, then download in your browser.
Browser crop · stays on your device
Crop your Tumblr profile picture
512 × 512
Add a photo to crop
Upload a face or mark—or try the sample—then keep the subject in the center before you download.
Size specs
Always square. Dashboard and post chrome show a tiny tile—keep the face or mark centered.
Publish
Export this for Tumblr upload.
| Asset | Pixels | Ratio | Notes | Action |
|---|---|---|---|---|
| Clearer upload Recommended | 512×512 | 1:1 | Practical square for modern screens. Tumblr scales it down for dashboard and search. | Use in tool |
What Tumblr shows
Reference sizes and crops—not always separate upload files.
Help-center ideal (reference)
128×128 1:1
Tumblr appearance help cites 128×128 as an ideal size—not a reason to ship a soft file. Prefer 512×512.
Use in tool| Asset | Pixels | Ratio | Notes | Action |
|---|---|---|---|---|
| Help-center ideal (reference) | 128×128 | 1:1 | Tumblr appearance help cites 128×128 as an ideal size—not a reason to ship a soft file. Prefer 512×512. | Use in tool |
Tumblr avatars are tiny tiles next to every post
Your avatar appears beside posts, in search, and on the blog. Tumblr appearance help cites an ideal size around 128×128 with a 10 MB file cap. That ideal is a display-oriented target—shipping a soft 128 file looks muddy on phones. Prefer a clearer 512×512 master and let Tumblr scale down.
Themes and the modern Tumblr UI may show rounded squares or tight tiles. Keep the subject centered so neither corners nor theme masks remove the only face.
The header image is a wide blog banner (Tumblr help cites 2048×1152). Do not stretch that landscape into the avatar slot.
Photo posts are another job—dashboard columns are narrower than your camera roll. Crop posts on the post guide; keep this page for identity only.
Good vs weak crop
Same circle mask—corners disappear; design for the tiny comment-size icon.
Reads beside a post
- Subject centered
- Clearer than 128 soft upscale
- True square export
Soft or edge-only
- Header strip stretched into 1:1
- Busy group shot at dashboard size
- Only detail in the corners
Before you upload
Tick these off against your crop preview—nothing is saved.
Related surfaces compared
Similar-looking slots often use different ratios—do not reuse one export for all of them.
Avatar / profile picture
512 × 512
This page. Blog and dashboard identity.
Header image
2048 × 1152
Wide blog banner—separate export.
Photo post
1280 × 720
Feed still—different job.
| Surface | Typical size | Note |
|---|---|---|
| Avatar / profile picture | 512 × 512 | This page. Blog and dashboard identity. |
| Header image | 2048 × 1152 | Wide blog banner—separate export. |
| Photo post | 1280 × 720 | Feed still—different job. |
Design for dashboard size first
Most people meet your avatar next to a post, not on a full-screen about page. Fill the tile with one clear face or mark. Thin wordmarks fail when the tile shrinks.
- Prefer bold contrast on light and dark themes.
- GIFs may convert to stills—confirm Tumblr’s current behavior if you rely on motion.
- Coordinate color with the header without cloning the same crop.
Avatar is not the header
Headers are wide 16:9 banners per Tumblr help. Avatars are squares. Reuse photography if you want—export two files.
- Header size — 2048 × 1152 banner
- Post size — 1280 × 720 feed still
File requirements
JPEG, PNG, or WEBP are commonly supported. Prefer sRGB. Keep weight reasonable—help cites a 10 MB cap for appearance images.
- Clearer upload
- 512 × 512 px
- Help-center ideal
- 128 × 128 px
- Aspect ratio
- 1:1
- Formats
- JPEG, PNG, or WEBP
- File cap (help)
- About 10 MB
Common mistakes
- Uploading a soft 128×128 and expecting retina clarity.
- Stretching the header into the avatar slot.
- Putting the only logo in a corner themes round away.
- Oversized multi-MB files that fail to upload.
How to use the crop tool
Upload a photo, choose Clearer upload (512×512), drag until the subject fills the center, then download. Processing stays in your browser.
- Prefer PNG for flat marks; JPG for photos.
- Judge the avatar beside a real post after publish.
After you download
From this download to a live upload in a few minutes.
- 1
Download the 512×512 JPG or PNG from the tool.
- 2
In Tumblr blog appearance / edit appearance, update the avatar.
- 3
Check the dashboard and your blog on phone and desktop.
- 4
If the face feels clipped, re-crop and upload again.
Frequently asked questions
What size is a Tumblr profile picture?
Tumblr help cites an ideal around 128×128. Prefer a clearer 512×512 square upload so dashboard thumbs stay readable.
Is the avatar circular?
Themes vary—many show a square or rounded tile. Keep the subject centered either way.
Can I use a GIF avatar?
Tumblr may convert GIFs to still images for avatars. Confirm current behavior if motion matters to you.
Can I crop Tumblr avatars here?
Yes. The in-browser crop stays on your device until you download and upload to Tumblr yourself.