Firn for webtoons
One world, paced for the thumb.
A vertical scroll episode is not a comic page turned sideways. It reads top to bottom, one beat at a time, with air between the panels so the moment lands before the next one arrives.
Firn composes your chapters into 800×1280 strips (one to three panels each, generous vertical breathing room) from the same world bible that could just as easily open as a visual novel or a book.
Worth being straight with you: this builds real strips at the sizes LINE and Tapas ask for, and it is a serious drafting studio. It is not a one-click publisher, and you should not expect to skip the editing pass.
Free to start. Strip-image export is a premium format. Everything you make is yours.
Built for the scroll
Strips, not pages. Spacing that reads as timing.
The layout engine composes strips at 800×1280 pixels with one to three panels each and 200 pixels of vertical space between beats: the pause between reveals that vertical-scroll readers feel with their thumb, not just their eyes.
Three webtoon-specific panel templates give the Designer a vocabulary for the strip: a full-width establishing beat, a stacked dialogue pair, a fast three-panel action run. It composes strips straight from your chapter scenes: prose becomes scene beats, beats become panel art, panels become finished strips.
What lands on disk
An episode, cut into posting-ready strips.
Export an episode and you get a folder of strips at the width the platform wants — 800 pixels for LINE Webtoon, 940 for Tapas — plus a plain list of what is on each one:
- Strips numbered in reading order, so they upload in the right sequence without you renaming anything
- Every strip at 800×1280, one to three panels, built from the beats of your scene
- Speech bubbles, captions and sound effects already lettered onto the art
- A line per strip saying how many panels, which scene, and who is in it
Nothing about the files is ours. They are ordinary images, and you upload them to LINE Webtoon or Tapas yourself, from your own account.
# Episode 04: "The frost reaches the pier"
# 14 strips · 800x1280 · reading order top -> bottom
strip_010.png 800x1280 panels: 1 scene: pier_dawn
strip_011.png 800x1280 panels: 2 scene: pier_dawn
strip_012.png 800x1280 panels: 2 scene: pier_dawn
strip_013.png 800x1280 panels: 3 scene: mara_confrontation
strip_014.png 800x1280 panels: 1 scene: mara_confrontation
# manifest.json (excerpt)
{ "id": "strip_013",
"size": [800, 1280],
"panels": 3,
"scene": "mara_confrontation",
"cast": ["elara", "mara"],
"bubbles": 4, "sfx": 1 }Lettering that lands in the strip
Bubbles, captions, and SFX composited in.
Speech bubbles in five shapes, caption boxes, sound effects and panel borders go straight onto the art, so what comes out already reads as an episode — not a stack of bare pictures you still have to letter yourself.
The same cast, episode after episode
A face that survives a hundred panels.
Webtoons are long. A series is hundreds of panels across dozens of episodes, and the fastest way to lose a reader is a lead who looks like a different person every scroll.
Reference banks, not lucky rolls
Every lead has a set of reference images, and every new panel is drawn from them — so your cast stay recognisably themselves instead of drifting into strangers halfway down the episode.
It notices when a face starts slipping
If a character starts drifting from how they are supposed to look, Firn catches it and tightens back up — rather than leaving you to spot it and roll the dice again.
Continuity that reads the whole series
The Editor checks for the breaks a long-running strip makes: a name gone wrong, a timeline that contradicts itself, a scene set in the wrong place, art that doesn't match what the bible describes.
One canon, one bible
The strip is one door out of the same world.
Your cast, your places, your timeline and the shape of the story all live in one place. The webtoon is one way of looking at it — and the same world can open as a visual novel, a comic, a book or an audiobook without rebuilding anybody.
Rename a character once and it cascades everywhere they appear: every strip, every caption, every other format drawn from the same core. The lead you named in episode one stays that name in the spin-off you haven't written yet.
You direct. The crew proposes.
It's your strip. Say how it was made.
Readers can tell when a series is on autopilot, and they are right to ask. Firn proposes; you decide. A strip gets suggested, art gets suggested, and none of it goes anywhere until you have said yes.
Firn keeps an activity ledger of what the crew drafted, directed, and rejected in the studio, so when a platform or a reader asks how the work was made, you can answer plainly instead of guessing.
Same world, another shape
Want it paneled for print instead?
The comic and manga path lays the same scenes out as bound pages (left-to-right or right-to-left) instead of one long scroll. Or browse every format to see what one bible can become.
Where webtoons live
Plain strips, ready for your dashboard.
You get strips at 800 or 940 pixels wide — the sizes LINE Webtoon and Tapas ask for — and you upload them yourself, on your own account, on your own schedule. Your world stays here, so the next episode starts from what you built rather than from memory.