Does my image actually stay on my device?

Yes. The resize runs in your browser using the Canvas API. We never see, store, or transmit your image. You can verify this in your browser's network tab — only static files load, no upload requests.

What's the catch? Why is this free?

No catch. The whole tool runs in your browser, so there are no servers and no bandwidth costs. We're validating demand first; a paid tier with batch resize and API access may come later.

Can I batch resize multiple images?

Yes — one click exports your photo resized to all 17 marketplace presets as a ZIP. Single-image batch export is built in; multi-image upload is on the roadmap.

Do you support my country's platform?

Yes — imgsize.cc supports Amazon (US, IN), Etsy, Shopify, Walmart, Flipkart, Instagram, TikTok, YouTube, LinkedIn, X, Facebook, Pinterest, Threads, Mastodon, Twitch, Snapchat, Behance, Substack, Medium, Dribbble, Tumblr, Vimeo, SoundCloud, Discord, WhatsApp and Spotify. If we don't have your platform yet, request it via email.

What image formats can I export?

JPEG, PNG, TIFF, and GIF. PNG is the default for product photos because it preserves transparency and is the format Amazon prefers. JPEG is smaller and great for social posts.

Rakuten Item Image Size: 640×640 (2026 Spec)

Rakuten Japan image size: the 2026 spec

This guide covers the official 640×640 px (recommended), 100×100 px (minimum) specification, format requirements, and the practical workflow imgsize.cc uses to get it right in your browser.

Why these dimensions

Rakuten Japan's listing feed renders at 640×640 in the search grid, with retina support up to 1280×1280. The 640×640 upload matches the grid size exactly, avoiding unnecessary bandwidth. Rakuten Apparel is the strictest category — pure white background is enforced, and listings with off-white backgrounds are auto-suppressed. Other categories accept any background.

Specification breakdown

Size: 640×640 px (recommended), 100×100 px (minimum)
Format: JPEG, PNG, GIF
Max file size: 5 MB
Aspect ratio: 1:1 (square, mandatory)

The "safe area" inside the frame

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

Common mistakes

Non-square images — letterboxed with white
Image under 100×100 — listing fails Rakuten's pre-checks
Off-white background in Apparel — auto-suppressed

Frequently asked questions

Is Rakuten Global Market different from Rakuten Japan?

Functionally identical for image specs. Different shipping/logistics policies.

Does Rakuten accept TIFF?

No. Use JPEG, PNG, or GIF only.

How imgsize.cc handles it

Drop your source image into the workbench above. The crop box defaults to a 1:1 aspect ratio matching Rakuten's spec. Resize, crop, and download as a 640×640 pixel PNG — all in your browser, no upload required.

Rakuten Item Image

Spec details