FREE TOOL
LINE sticker size checker
Verify sizes, transparency, and format before submitting — no install, no upload, completely free.
Sticker
≤370×320px
Main image
240×240px
Tab icon
96×74px
Format
Transparent PNG · even pixels
Drop sticker PNGs here or click to choose files
Files are checked entirely in your browser — nothing is uploaded.
Skip the resizing — generate spec-compliant stickers with AI
One photo becomes a main image, tab icon, and 12 stickers in ~3 minutes — the ZIP matches LINE Creators Market specs exactly.