Plan speech-bubble space while you thumbnail the page, but do not bake dialogue, bubbles, sound effects, or translations into the illustration.
Keep at least four editable production layers:
Clean comic art
Bubble shapes and tails
Sound effects and display lettering
Dialogue or translation text
Flatten those layers only when you create a delivery export. This gives the letterer room to change line breaks, enlarge a German bubble, redraw a translated sound effect, or fix a typo without regenerating the art.
In our October 28, 2026 test, we generated one 1600 x 900 clean comic master with Vertex gemini-nano-banana-2.1, then exported English and German versions from the same art. The German version changed bubble geometry, line breaks, SFX, and dialogue. It required zero art regenerations, and the clean-art SHA-256 remained unchanged.
Start with text-free panels in LlamaGen.AI Comic Strips, reserve negative space for lettering, and keep the production text editable until approval.
Why This Becomes a Chapter-Level Problem
One speech bubble is easy. A complete chapter is not.
A recent r/aicomicmakers lettering discussion highlighted the work that begins after the art is finished: bubble placement, font choice, line breaking, reading order, SFX, page-to-page consistency, and repeating the process for every language.
The most useful comments point in two directions that should not be confused:
One experienced creator said art and text must remain separate. They use generated pages for ideas but rebuild lettering and SFX manually.
Another creator said bubbles must be considered early because their first chapter repeatedly produced balloons that were too large or too small for the panels.
Both are right. Plan lettering early; preserve editability late.
If you postpone all bubble decisions until final art, dialogue may cover faces and actions. If you generate final text inside the art, every typo and translation becomes an image-repair problem.
Our Layered Lettering Test
We used the same four-panel library scene for every output:
Panel 1: A repair robot enters a giant library with a moon map.
Panel 2: It mistakes a sleeping orange cat for the head librarian.
Panel 3: A stack of books falls while the robot protects the map.
Panel 4: The robot salutes; the cat opens one unimpressed eye.
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Comic Lettering Workflow: Keep Art, Bubbles, and Translation Separate - LlamaGen.AI Blog
The clean-art prompt explicitly prohibited letters, speech bubbles, signs, logos, watermarks, and sound effects. It also requested blank areas near the upper edges of panels 1, 2, and 4.
Test Conditions
Item
Test value
Test date
October 28, 2026
Clean-art model
Vertex gemini-nano-banana-2.1
Working size
1600 x 900
Clean-art generations
1
Clean-art gateway request
21.862 seconds
English local composite export
0.816 seconds
German local composite export
0.537 seconds
Art regenerations for German
0
Mobile QA width
390 pixels
The image request and local export times describe this one run, on this machine and network. They are not product latency, pricing, or credit benchmarks.
The experiment used one clean illustration layer, then added independent bubble, SFX, and dialogue layers. The checkerboard areas represent transparency, not missing art.
The Four-Layer Contract
1. Clean Art
The art layer contains only illustration pixels: characters, props, backgrounds, lighting, panel borders, and deliberate empty space.
It should not contain:
AI-generated dialogue
Empty white bubbles that cannot be moved
Sound effects fused with objects
Captions or translated text
Temporary review notes
This is the source you return to when a new language or revised script arrives.
2. Bubble Shapes
Bubble geometry is a layout decision, not part of the dialogue string.
Keep the outline, fill, and tail editable so you can change:
Width and height
Tail direction
Speaker assignment
Distance from faces
Reading order
Space for longer translations
Clip Studio Paint's official balloon documentation describes balloons as editable layers with adjustable shapes, tails, control points, line thickness, and fill. The exact tool is optional; the editable behavior is the requirement.
3. SFX
Sound effects sit between art and language. They may interact with the scene like illustration, but they may also need localization.
In our English export, the falling books use WHUMP!. In German, that layer changes to RUMMS!. The books, robot, and cat do not change.
Keep SFX separate when:
A translator may localize it.
The effect overlaps important art.
The client needs a text-free edition.
A print version needs a different crop.
You may replace display lettering later.
4. Dialogue and Translation
Store dialogue as editable text boxes, not pixels. A translation is not simply a string replacement: line length, word shape, punctuation, vertical rhythm, and font support can change.
The official Clip Studio Paint text documentation notes that wrapped text depends on the text frame and that text outside the frame can become invisible. That is why every locale needs a visual fit check after translation.
What Changed in the German Export
We changed four production decisions:
Layer
English
German
Art affected?
Bubble 1
Short oval
Wider oval for KARTENRÜCKGABE
No
Bubble 2
Two English lines
Two longer German lines
No
SFX
WHUMP!
RUMMS!
No
Final dialogue
Two lines
Two longer lines in a taller bubble
No
The clean-art checksum was 6ec0247c2cce... before and after both exports. We also resized the German export to 390 pixels wide and checked the smallest dialogue without zooming. It remained readable in the test preview.
This does not mean every translation can reuse the same page layout. It means the art can remain stable while the letterer adapts the editable layers.
Failure Test: Translating a Flattened Page
To reproduce the common failure, we flattened the English bubbles, SFX, and dialogue into the comic page. We then placed the German text over that flattened image without access to the clean art.
The result preserved the old English letters underneath the German translation. The new words collided with the old ones, and the English SFX remained behind the German SFX.
The layered version replaced only the editable production assets. The flattened version would require one of three repairs:
Recover the clean source page.
Paint over every old letter and reconstruct the art beneath it.
Regenerate the affected panels and risk character or composition drift.
This is why a flattened PNG or JPEG should be a delivery artifact, not the master file.
A Production File Structure That Survives Translation
Keep predictable names and separate source from export files:
PSD, CSP, SVG, or another editable format can work. The format matters less than preserving layer names, text editability, font information, and a clean art master.
Step-by-Step Workflow
Step 1. Generate Text-Free Panels
Use a prompt that reserves space but prohibits generated lettering:
Create a four-panel comic page with clear reading order.
Keep the same robot and orange cat in every panel.
Reserve clean negative space for future speech bubbles.
Do not render dialogue, captions, signs, letters, logos, watermarks, or SFX.
LlamaGen.AI Comic Strips can help you build the visual sequence and maintain story context before the final lettering pass.
Step 2. Add Temporary Bubble Footprints Early
During thumbnails or layout review, add rough bubbles with approximate dialogue volume. Do not polish them yet.
Approve:
Speaker order
Tail direction
Required negative space
Reading path
Maximum dialogue volume
This catches the "bubble is larger than the panel" problem before final art.
Step 3. Lock the Clean Art
Once panel composition is approved, export a text-free master and record its version or checksum. Future lettering edits should not silently modify it.
Step 4. Build Editable Bubbles and Text Separately
Keep bubble shape and text distinct when the tool allows it. A short English phrase may need a wider German balloon even when the font size stays the same.
Step 5. Isolate SFX
Treat SFX as a named layer or group. Decide per project whether it remains universal, is transliterated, or is localized.
Step 6. Create One Locale Export at a Time
For each language:
Replace dialogue text.
Review line breaks.
Resize bubbles instead of shrinking type until it is unreadable.
Check translated SFX.
Verify fonts include every required glyph.
Export web and print targets from the same approved source.
Step 7. Run Mobile and Print QA
Check the actual delivery size, not only the full-resolution canvas.
Can the smallest line be read at phone width?
Does any tail point to the wrong speaker?
Does text touch the bubble edge?
Does a translated bubble cover a face, hand, or prop?
Are SFX and dialogue in the correct language?
Is the exported file flattened while the source stays editable?
Approval Gates
Gate
Approver checks
Locked after approval
Art
characters, props, panel order, negative space
clean art version
Bubble layout
reading order, size, tails, face clearance
locale bubble geometry
Source dialogue
wording, speaker, punctuation, line intent
source-language text
SFX
placement, overlap, localization policy
locale SFX layer
Translation
meaning, tone, line breaks, glyph coverage
locale text layer
Export
mobile, print, crop, color, filename
delivery asset
If a translation forces a panel crop or character repositioning, return to the art gate. Do not hide an art change inside a lettering revision.
Common Failures and the Cheapest Repair
Failure
Why it happens
Cheapest repair
Fake AI text inside art
text was requested during image generation
return to clean art and add editable text
Bubble covers a face
no footprint was reserved during layout
move or resize bubble; regenerate only if no safe space exists
German copy becomes tiny
original bubble was treated as fixed
enlarge bubble or rewrite line breaks
English SFX remains in translated page
SFX was fused with art
use clean master and replace SFX layer
Old and new dialogue overlap
translation was placed over a flattened export
recover source layers; do not paint over the master
Font misses glyphs
locale coverage was not checked
choose a font family with required characters
FAQ
Should I ask an image model to render final speech-bubble text?
Usually no. Generate clean art, then add dialogue with an editable text tool. Image models can create useful composition ideas, but final lettering needs exact spelling, line breaks, font control, and revision history.
Should bubbles be added early or late?
Plan their footprints early and finalize their geometry after the visual sequence works. Keep them editable until the locale export is approved.
Should bubble shapes and dialogue be separate layers?
Yes, when your tool supports it. A translator may need to change line breaks and bubble size independently. Some applications combine text and balloons into one editable object; that is still safer than rasterizing both into the art.
Should SFX be translated?
It depends on audience and editorial policy. Keep SFX separate so the decision remains reversible. A text-free international master is also useful for later localization.
Did the layered workflow make translation faster?
In this test, local English and German composites both rendered in under one second, and the German version required no art regeneration. That is one controlled run, not a universal speed claim. The durable benefit is that a text change did not put approved art at risk.
What should the final deliverables include?
Keep the editable source, clean art master, font list, locale text, and flattened delivery exports. Do not archive only the final JPEG or WebP.
Written by Jay and reviewed by the LlamaGen.AI content team. The test illustration was generated once through Vertex with gemini-nano-banana-2.1. Bubble, SFX, translation, failure, and export layers were composited locally from the same clean art. Timings, checksums, and outputs describe this test only.
Create your text-free page in LlamaGen.AI Comic Strips, approve the visual sequence, and keep lettering editable until every language passes review.
Related hot tags
Truyện tranh AI
Lettering
Comic Translation
Speech Bubbles
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