Webtoon Cropper
Specialized cropping tool for vertical scroll webtoon images
Webtoon Cropper
The Webtoon Cropper splits a long vertical scroll download into individual pages — this is a required step for webtoon-format content, not an optional cleanup tool. WTN Suite can't load a raw continuous scroll directly; it needs pages to work with.
Why This Step Is Required
- WT-Downloader gives you a raw, continuous vertical strip — often 10,000+ pixels tall
- WTN Suite's pipeline needs that strip split into individual pages before you can load a chapter
- Pages keep their text bubbles and dialogue intact on purpose — the AI reads that text later to write accurate narration
- Run every webtoon chapter through this tool before moving on to Load Chapter & Review Panels
ℹ️ Info
For page-based manga/manhua (standard book pages, not a continuous scroll), use the Manga Cropper instead — that's a separate tool outside WTN Suite's core webtoon workflow.
How to Use
Open Webtoon Cropper
Click "Webtoon Cropper" on the toolbar.
Load Your Image
Select one or more vertical webtoon strip images. These are typically very tall images (thousands of pixels in height).
Draw Horizontal Cut Lines
Click on the image to place horizontal lines where you want to split the strip. Each line creates a division point — the image is cut into segments between these lines.
- Move a line: Drag it up or down
- Delete a line: Select it and press Delete
- Zoom: Mouse wheel to zoom in and place lines precisely
Export
Click Export. The strip is sliced at each cut line, producing individual page images numbered from top to bottom — these still have text bubbles/dialogue intact, ready to load into Load Chapter & Review Panels.
How It Differs From Manga Cropper
The Webtoon Cropper works differently because webtoons scroll vertically:
- Manga Cropper: You draw boxes anywhere on a page (any position, any size)
- Webtoon Cropper: You draw horizontal lines across a tall strip (full-width cuts)
The result is the same — individual page images ready for the pipeline — but the workflow matches the content format.
Tips
💡 Tip
Place cut lines at natural scene breaks — where the background changes, a new character appears, or there's a clear visual gap between panels. This produces the cleanest individual pages, and cutting mid-dialogue can split a character's speech across two pages, which hurts narration quality downstream.
💡 Tip
Don't worry about being pixel-perfect. Small amounts of extra space at the top or bottom of a segment won't affect the AI analysis or video output.
Common Issues
⚠️ Warning
Very long strips take a moment to load. Webtoon images can be 10,000+ pixels tall. Give the tool a few seconds to fully load and render the image.
Next Steps
- Pipeline Overview — Load your cropped pages into the AI pipeline with "Load Chapter & Review Panels"
- Manga Cropper — For page-based manga instead (unrelated to the core webtoon workflow)