Line art colorizer
Upload a high-contrast line drawing and AI Line Art Colorizer fills it with color while your strokes stay exactly where they are. Start with flat cel color, switch to soft shading, add up to five palette colors with notes for specific regions, overlay the original line art to check alignment, then download a PNG and compare it side by side with the drawing you started from.
Upload one line drawing, choose flat or soft shading, add up to five optional palette colors with region notes, then compare the colorized artwork with your original outlines before you download.
JPG, PNG, or WebP, up to 5 MB, 256-4,096 px per side, no more than 16 MP
240 characters left
One colorized drawing per run. The line work is kept as structure, so compare the outlines and regions before you use the result.
25 credits per colorized drawing, returned if the task fails. Not free or unlimited; the tool fills the regions your outlines define instead of redrawing the drawing.
Example resultResults
The same workflow handles a hand-drawn character, a botanical study, and a product sketch. Each card shows the source line art and the colorized artwork made from it.
Settings: Flat cel color · 4 colors
An original character drawing with clean outlines and a shadow under the feet. Flat color fills the skin, jacket, denim, and boots while every contour stays on the exact stroke it started on, which is the look a character sheet or webcomic panel needs before you add effects.
Settings: Soft shading · 5 colors
A botanical study of a flowering stem with fine petal and leaf contours. Soft shading adds gentle gradients to petals, leaves, and the vase so the study reads as volume rather than filled shapes, and the fine ink lines that define every petal are preserved throughout.
Settings: Flat cel color · 5 colors
A furniture concept sketch in loose pencil outlines with a scale figure and dimension marks. A five-color brand palette applied by region keeps the wood, upholstery, metal legs, and shadow consistent, so the concept reads as a finished pitch image instead of a rough drawing.
At a glance
Line art is a drawing reduced to outlines. Colorizing it means filling the regions those outlines enclose without redrawing the lines, which is different from colorizing an old black-and-white photograph. This page does the drawing case, and here is exactly what it delivers, reviewed on September 24, 2026.
How it works
The workbench on this page runs the whole job: upload, style, palette, download. Nothing is charged until you press the generate button.
01
Add one high-contrast JPG, PNG, or WebP drawing. Dark outlines on a light background work best. The uploader checks the file type and size locally, and reads the pixel dimensions before you spend anything.
02
Flat cel color gives solid fills with crisp edges, which suits manga, comics, and vector-style illustrations. Soft shading adds gentle gradients and shading for painted illustrations. Flat is the default, and you can switch before generating.
03
Add up to five colors with the swatch control, then use the notes field to describe regions in plain words, such as warm wood, teal jacket, or soft sky. Leave both empty and the tool picks a restrained palette from the drawing.
04
After the task finishes, the result appears beside the original drawing. Toggle the line overlay to confirm the original strokes still line up, download the PNG, then change the palette or style and generate again if you want a different take.
Studio controls
Every control on this page changes the generated artwork. They are mapped to the way illustrators already work with line art.
The drawing is treated as the final line layer. Color is placed inside the regions the outlines already define, so contours, panel borders, and proportions are not redrawn or shifted.
Solid, even fills with clean boundaries and no gradients. This is the default because it matches the fill layer most comic, manga, and character-sheet workflows expect.
Base colors with gentle gradients, soft shadows, and smooth highlights that stay inside the existing outlines, for illustration and painterly concepts.
Up to five exact colors plus a short region description. The model maps each color to the area it fits and keeps the same color consistent across similar regions.
Comparison
Colorizing a drawing looks similar to other color jobs but the requirements are different. Here is how the main options compare for line art specifically.
| Method | Output | Line work | Palette control | Effort | Best for |
|---|---|---|---|---|---|
| AI Line Art Colorizer (this page) | Your line drawing filled with color on the original outlines | Strokes, shapes, and framing preserved | Up to 5 colors plus region notes | One upload, about a minute | Illustrators, comic and webcomic pages, product and floral sketches |
| Manual flatting in a paint app | Hand-painted fills under your own line layer | Full, but traced region by region | Unlimited, but every region is manual | Hours per drawing | Final production art where you need total control |
| Photo colorizer for black-and-white photos | A grayscale photograph with natural inferred color | Keeps photo texture, not drawn line art | Automatic, no palette or region control | One upload | Restoring old black-and-white photographs |
| General AI editor recolor tools | A restyled edit of whatever image you feed in | May repaint or reinterpret the drawing | Prompt-based, hard to keep exact hex swatches | Learning curve plus iteration | Mixed image edits and compositing outside line art |
Input guide
Results track the clarity of the drawing. Use this check before you upload so the first pass is the one you keep.
Dark, reasonably even outlines on a white or transparent background colorize most reliably, because the model can see every closed region clearly.
Very pale or broken strokes can leave regions open, which lets color bleed across shapes. Darken the outlines or clean the scan first for a tighter result.
Traced photo outlines work when the trace is clean. If the trace has hatching or heavy shading, expect the color to follow that hatching instead of reading as flat regions. Photo to Line Drawing on this site produces a cleaner starting file.
Colorizing keeps the framing you upload. Crop and straighten the scan before uploading so the output matches the composition you actually want.
This tool expects line art. A full-color photo is handled by the image colorizer and photo restoration pages instead, which are built for photographic input.
Lettering, screentone, and dense cross-hatching can be treated as regions. Expect some cleanup, and keep a copy of the original layer if the artwork is going to press.
Where it fits
Illustrators and small creative teams use the same short loop: draw lines, colorize, compare, download, repeat.
Color a penciled panel in flat cel color to preview the palette across a page before committing to final flatting.
Turn an ink botanical study into a soft-shaded illustration for prints, packaging, and stationery.
Apply a brand palette to concept sketches so a client pitch reads as a finished product image.
Turn product photos into line art firstProduce colored line art for prints, stickers, and coloring books, and keep the uncolored drawing as a second product.
Explore coloring-page workflowsFAQ
It is a tool on Banana Pro AI that takes a black-and-white line drawing and fills it with color while keeping the drawn outlines. You upload one drawing, choose flat cel color or soft shading, optionally set up to five palette colors and region notes, then download a colorized PNG.
The image colorizer is for black-and-white photographs: it infers natural photographic color and keeps film grain and texture. AI Line Art Colorizer is for drawings: it keeps your line work as the structure and fills the regions those lines define. If your input is a photo, use the image colorizer; if it is ink or pencil line art, use this page.
Yes. The line drawing is treated as fixed structure. Color is placed inside the regions the outlines already close, so strokes, contour shapes, proportions, and framing are not redrawn. Use the line overlay toggle after generating to confirm the original lines still line up with the result.
Flat produces solid, even fills with crisp color boundaries and no gradients, which matches the fill layer in comic and vector workflows. Soft shading keeps the same base colors but adds gentle gradients, soft shadows, and highlights inside the outlines. Flat is the default.
Yes. Add up to five colors with the palette control and describe regions in the notes field, for example sky blue for the background and warm wood for the furniture. The tool maps each color to the region it best fits and keeps the same color consistent across similar areas.
No. The overlay that shows your original line art on top of the colorized result is a local browser preview. It does not upload anything or start a new task, so you can toggle it and adjust opacity as often as you like after a run finishes.
Upload one JPG, PNG, or WebP line drawing up to 5 MB and between 256 and 4,096 pixels per side, no more than 16 megapixels. You get back a 1K PNG in the original aspect ratio that you can download and drop straight onto a line layer in your own editor.
25 credits per run. Credits are returned automatically if the task fails, and nothing is charged for uploading, resizing, or the local overlay check. You can change the palette or style and run it again whenever you want a different color direction.
Related tools
These pages cover the steps that usually come before or after colorizing line art.
Turn a photo into clean black-and-white line art, then bring the drawing back here to color it.
Add natural color to black-and-white photographs, built for photo texture rather than line art.
Generate new illustrations and concepts when you need a fresh subject instead of coloring an existing drawing.
Turn a photo into a printable coloring page, the uncolored companion to a colorized drawing.
Start colorizing
Upload a drawing, pick flat or soft shading, set an optional palette, and download a colorized PNG with your outlines intact.
Colorize line art