Free Webtoon Slicer & Canvas Formatter
Auto-crop and format long vertical comic strips for LINE Webtoon Canvas (800×1280px), Tapas (940px), and social carousels. 100% private, client-side in your browser with 1-click ZIP export.
Drag & Drop Your Vertical Comic Strip Here
Supports long continuous scrolls (PNG, JPG, WebP up to 30,000px height).
Official LINE Webtoon Canvas Upload Requirements (2026 Guidelines)
📐 Resolution & Dimensions
LINE Webtoon requires images to be strictly 800 pixels wide and a maximum of 1,280 pixels tall per slice. This tool automatically resamples higher resolution art down to 800px.
💾 File Size Limits
Each individual slice must not exceed 2MB, and the total episode size must be under 20MB. JPEG format at 85–90% quality ensures crisp visual lines well under 300KB per slice.
📱 Mobile Reading Flow
The LINE Webtoon mobile reader seamlessly stitches contiguous slices together without any margin or white borders. Use our Phone Simulator above to verify seamless scrolling.