There are two ways to turn a photo into line art. An edge filter finds places where the picture changes from light to dark, then draws a line there. An AI redraw looks at the photo and draws a new picture of it. The filter stays faithful but copies the mess, and the redraw looks cleaner but may change what it sees.
Our Photo to Line Art tool has both, so this guide uses it for the examples. On November 3, 2026, we read the tool's code, so the settings and numbers here come from there. We didn't run the paid AI mode for this article, and we say so where it matters. Use your own photos, or pictures you have the rights to.
Decide based on what you plan to do with the lines.
| Your goal | Use | Why |
|---|
| Trace a portrait or a building | Exact outline | Every line follows a real edge in the photo |
| A photo with fur, grass or a knit sweater | AI redraw | An edge filter turns that texture into speckles |
| Cut the lines with a machine, or print very large | AI redraw, Clean or Outline style | These are the styles that give you an SVG |
| A soft, shaded drawing | AI redraw, Pencil sketch | It keeps gray tones, so it isn't strictly line art |
| A logo you own, or a simple silhouette | AI redraw, Outline only | It asks for main contours and almost no inside detail |
| Keep the photo on your device | Exact outline | It runs in your browser and never uploads the photo |
Exact outline needs no account, costs nothing and works entirely on your device. It uses a classic method called difference of Gaussians. In plain words, it blurs the photo twice by different amounts, compares the two copies and marks a line where a spot is darker than its surroundings.
That last part has a useful effect. Flat areas stay white, even dark ones, so black hair or a navy jacket gets an outline instead of a solid black patch.
- Open Photo to Line Art and set Mode to Exact outline.
- Add a JPG, PNG or WebP photo. It should be at least 256 pixels on each side, and the tool works at up to 1,600 pixels on the long edge.
- Set Detail. Less, Balanced and More change how much of the photo becomes a line.
- Set Line weight. Fine leaves the lines alone, Medium grows them by 1 pixel on each side, and Bold grows them by 2.
- Choose US Letter or A4, then download the PDF or PNG, or print directly.
The code gives each Detail setting a blur size and a sensitivity. Those three pairs are 2.4 and 5 for Less, 1.6 and 3 for Balanced, and 1.1 and 1.8 for More. Lower numbers catch smaller and fainter edges.
So when a photo looks speckled, the fix is to move Detail toward Less. That raises the blur and asks for a stronger edge before it draws a line. When a face loses its features, move toward More. The preview updates as you change settings, so you can settle this before you download anything.
AI redraw costs 3 credits a photo. Without an account you get 1 free page a day from this mode, while the site's daily free pages last. A new account gets 2 free credits, which isn't enough for one redraw at 3 credits.
- Keep Mode on AI redraw and add your photo.
- Pick a Style: Clean line art, Outline only or Pencil sketch.
- Set Line weight, unless you chose Pencil sketch, which hides that option.
- Set Detail to Less, Balanced or More.
- Turn on Remove background if you only want the subject, and Transparent PNG if you want a version without the white page.
- Press Convert to line art. The screen tells you it usually takes 15 to 30 seconds.
There is no preview before you spend the credits, which is the main difference from Exact outline. If a run fails, the credits go back to your balance.
The Clean line art instruction tells the model to treat dark hair, dark clothing and dark skin like light ones, drawing the outline and leaving the inside white. Results can still vary, so look closely at faces. A redraw can change small features, and we did not test a batch of faces for this article.
Line weight isn't sent to the model. The tool thickens the finished drawing instead, by 0 steps for Fine, 2 for Medium and 3 for Bold.
| Exact outline | AI redraw |
|---|
| Cost | Free | 3 credits |
| Account | None | Not needed for the one free page a day |
| PNG | Yes | Yes, 2,400 pixels on the long edge |
| PDF | US Letter or A4 | US Letter |
| SVG | No | Clean and Outline styles |
| Transparent PNG | No | Optional |
| Saved in My Pages | No | Yes, for 30 days, if signed in |
Transparent PNG works by reading how dark each pixel is. Black ink stays solid and white becomes see-through, so you can lay the lines over a color background in a card or a design.
If you already pay for Photoshop, MiniTool's guide gives a short recipe. Open the photo, run Filter, Stylize, Find Edges, then add a Black and White adjustment layer and a Levels layer to control how dark the lines look. That is another edge method, so it has the same problem with texture, and Levels takes a bit of practice.
ImageOnline's Photo to Line Drawing tool is another free, in-browser choice. Its page says it uses a Canny edge detector and offers sliders for detail, lines and line width. It can also flip the result to white lines on black and save as PNG, JPG or WebP.
We don't offer that flip, so if you want chalk-style white lines, that tool is worth a look. Our Exact outline has preset choices instead of sliders, and no SVG.
Everyone says to use a sharp, well-lit photo. It helps more to know what each method does with a bad one.
An edge filter draws lines wherever brightness changes. Harsh shadows across a face become lines across a face, and a busy background comes out as busy as your subject. Shoot in soft, even light, or crop close, because the filter can't tell the person from the wallpaper.
An AI redraw can simplify a busy background, and it has a switch to remove it. But it has to guess at anything it can't see. A blurry or tiny face gives it little to work with, so crop in on a clear version and upload the largest copy you have.
Line art or a coloring page?
Both are black lines on white. A coloring page wants thick, closed shapes with room for a crayon, and line art can be finer. If you plan to color the result, Photo to Coloring Page has styles built for that job, and our guide on how to turn a picture into a coloring page covers that path.
If you want solid shapes to cut and paint through, the free Stencil Maker is the better fit.
Yes. Exact outline is free, needs no sign-up and has no limit we set in the code. AI redraw also gives you 1 free page a day without an account, as long as the site's daily free pages last.
Use the PDF for a normal sheet of paper. If you are making a large print, the SVG from AI redraw stays sharp at any size.
Exact outline keeps it on your device. AI redraw sends it to our server and an image model. We don't store the original, and the result is kept for 30 days.
That is texture being read as edges. In Exact outline, move Detail to Less. If the specks remain, try AI redraw, which simplifies the picture as it draws.
Only with images you have the rights to, and our Terms of Service set the rules for AI tool results. Read them before you sell anything.
Last checked November 3, 2026.
