Best Webtoon Canvas and Export Sizes in 2026: Complete Guide

You have finished generating your webtoon episode. The panels look great, the characters are consistent, and the pacing flows. Now you need to export it — and suddenly you are faced with a wall of resolution options, file format choices, and conflicting platform requirements.

This guide is a complete reference for webtoon canvas dimensions, export settings, and platform specifications in 2026. Bookmark it. You will need it.

The Universal Standard: 800px Width

If you remember one number, remember 800. An 800-pixel wide canvas is accepted by every major webtoon platform: LINE Webtoon, Tapas, Bilibili Comics, KakaoPage, Naver Webtoon, and Lezhin Comics. It is the safest starting point.

Why 800px? It matches the screen width of most smartphones when the image is scaled to fit. On a typical 1080px-wide phone screen, an 800px canvas with some padding fills the display comfortably. Text is readable without zooming, and artwork detail is preserved.

Platform Width Reference

Platform	Required Width	Recommended	Max File Size	Format
LINE Webtoon (Canvas)	800px	800px	20MB	JPG, PNG
Tapas	940px	940px	10MB per episode	JPG, PNG
Bilibili Comics	720px min	1200-1600px	30MB	JPG, PNG
KakaoPage / Daum	720px	720-800px	15MB	JPG
Naver Webtoon	720px	720px	20MB	JPG, PNG
Lezhin Comics	800px	800px	20MB	JPG, PNG
Social media (X/IG)	1080px	1080-1600px	Varies	PNG, WebP

HD and 4K: Future-Proofing Your Exports

While 800px is the delivery standard for platform upload, there are strong reasons to create and store your webtoons at higher resolutions:

• High-DPI screens: Modern phones have 2x and 3x pixel densities. An 800px image on a 3x screen looks soft compared to a 1600px or 2400px export.
• Print potential: If your webtoon gets popular enough for a print collection, 800px images will look pixelated in print. 4K (4096px) gives you print-quality source files.
• Downsampling quality: Starting from a higher resolution and downscaling to 800px produces sharper results than generating directly at 800px.
• Future platform changes: Platforms increase their resolution requirements over time. Creating at HD now means you will not need to regenerate later.

StarVeil AI supports export at up to 4096px width (4K), which gives you maximum flexibility. Export once at 4K, then batch-downscale for each platform's requirements.

Height: The Unlimited Dimension

Webtoon height is effectively unlimited. All major platforms accept any image height, because webtoons are designed to be one continuous vertical scroll (or split into manageable chunks).

However, there are practical limits:

• File size: A 800×30,000px PNG can easily exceed 20MB. Split long episodes into multiple image files.
• Upload limits: Some platforms have per-file size caps. Check the table above.
• Loading performance: Readers on slow connections will struggle with a single massive file. Chunking is better UX.

Best practice: For episodes longer than ~40 panels, split the export into 2-3 image files. StarVeil AI handles this automatically.

File Format: PNG vs WebP vs JPEG

Format	Quality	File Size	Best For
PNG	Lossless, highest quality	Large	Final exports, archival, print source
WebP	Near-lossless at 75%+ quality	25-35% smaller than PNG	Web delivery, platform uploads where supported
JPEG	Lossy, quality degrades with text	Smallest	Platforms that require JPEG (KakaoPage)

Recommendation: Export in PNG for your archive. Convert to WebP for platforms that support it. Use JPEG only when the platform requires it — and check text legibility after compression.

AI-Specific Export Considerations

AI-generated webtoons have some unique export considerations:

• Generation resolution vs. export resolution: AI generates at a native resolution (e.g., 2K in StarVeil AI). Exporting at 4K may involve upscaling. For best results, generate at the highest native resolution your tool supports.
• Artifact checking: AI images can have subtle artifacts that become visible at higher resolutions. Review your export at 100% zoom before finalizing.
• Consistency across resolution: Characters that look consistent at 800px may show small differences at 4K. Review key panels at full resolution.
• Batch processing: When exporting multiple episodes, use consistent settings. StarVeil AI remembers your export preferences across sessions.

Quick Reference: Export Checklist

1. ☐ Generate at highest native resolution (2K-4K)
2. ☐ Review 2-3 key panels at 100% zoom
3. ☐ Export master copy as PNG at full resolution
4. ☐ Create platform-specific versions at required widths
5. ☐ Check file sizes against platform limits
6. ☐ Verify text legibility at target resolution
7. ☐ Upload and preview on target platform before publishing

For the complete webtoon creation workflow, see our guide on how to make a webtoon with AI.