Manga Effect Line Maker
Create manga-style focus lines, speed lines, and solid flashes for comics and thumbnails. Drag to move the focal point, tune density and thickness, and download as a transparent PNG. Everything runs locally, free for commercial use.

Pick a line type: focus lines, speed lines, or a solid flash.
Drag on the canvas to move the focal point. Adjust density, thickness, and colors in the right panel.
Click "Download PNG" to save a transparent effect-line image.
Create Effect Lines in 3 Easy Steps!
Pick a line type
Choose focus lines, speed lines, or a solid flash. Presets give you a polished starting point in one tap.
Adjust the pattern
Drag on the canvas to move the focal point, then tune density, thickness, variation, and colors. Hit Shuffle for a new random pattern.
Download
Click "Download PNG" to export a high-resolution image with a transparent background, ready to layer over manga panels or thumbnails.
v1.0.0(2026/07/03)
- Initial release
- Support 3 effect line types: focus lines, speed lines, and solid flash
- Freely move the focal point by dragging on the canvas (can be placed off-canvas)
- Adjust line count, thickness, variation, and center blank area (with ellipse support)
- Seed-based random generation (pattern stays identical until you change settings; shuffle for a new one)
- 8 presets with visual previews
- Canvas size selection (1:1 / 16:9 / 9:16 / 4:3 / custom)
- Transparent PNG export (1x/2x/3x) and copy to clipboard