RedBubble · Print on Demand

Upload Once.
Sized Perfect.
Every Product.

Stop guessing pixel dimensions. Pick your RedBubble product, drop your image — RedResizer resizes it perfectly. One click, ready to upload.

⚡ Resize Free — No signupHow it works →
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🎯12 RB Products
⚡Instant Resize
💾PNG Download
🆓100% Free · No Signup
The Tool

Your RedBubble Resizer

🔴Resize
👕T-Shirt
🔵Sticker
🖼️Poster
📱Case
💾Download
🎨Design
✂️Crop
📐Scale
🛍️POD
RedBubble Resizer
Perfect dimensions for every RedBubble product — instantly
① Pick Your Product
② Upload Your Image
🖼️
Drop your image here
JPG or PNG · Click to browse
🎨
Pick a product, drop an image
Your perfectly sized PNG will be ready to download in seconds
Simple as 1-2-3

How RedResizer Works

01
Pick Your Product
Choose from 12 RedBubble products — T-shirts, stickers, phone cases, posters, duvet covers, and more. Exact specs baked in, always up to date.
02
Drop Your Image
Upload your JPG or PNG. RedResizer resizes and centers it to RedBubble's exact pixel dimensions — 100% in your browser, nothing uploaded to a server.
03
Download & Upload
Hit download. Your perfectly sized PNG is ready to go straight into RedBubble. No Photoshop, no guessing, no rejected uploads.
Supported Products

Every Format Covered

👕 Apparel
T-Shirt — 2875×3900
Hats & Blocks — 8000×8000
All-Over Print — 5000×5000
📱 Accessories
Phone Case — 1187×1852
Tote Bag — 2000×2000
Sticker — 2800×2800
🖼️ Home & Wall
Poster — 6000×8000
Duvet Cover — 7632×6480
Mug — 3200×2000
📓 Stationery
Notebook — 2400×3200
Laptop Sleeve — 3500×2500
Shop Banner — 2400×600