Private by design
TraceLine line art example

Extract the lines. Refine the details.

Automatic extraction with professional manual control — all processed locally in your browser.

Start editing

Upload a photo to extract clean line art — or apply a style preset. All processing runs locally in your browser. Your image never leaves your device.

Click or drop to start

💡 If lines aren't coming out clearly, try preparing your image with LinePrep first.

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See what TraceLine can do.

Hover to reveal the original photo.

TraceLine example
TraceLine example
TraceLine example
TraceLine example
TraceLine example
TraceLine example
TraceLine example
TraceLine example

Turn photos into production-ready line art.

Generate production-ready line art, not just simple outlines. Built specifically as a reliable foundation for illustration, tracing, and professional design workflows.

Refine your results directly in the browser. Erase noise, draw missing lines, and adjust details through a seamless interface optimized for both desktop and tablet workflows.

Total privacy with 100% local processing. Your images are processed directly on your device and never uploaded to any external server, keeping your sensitive data secure.

写真から線画を抽出

Smart Line Extraction

Extract clean, balanced lines from any photo instantly. Perfect as a solid foundation for tracing, illustration, or design work.

ブラウザで線画を編集

Direct Manual Editing

Erase unwanted noise or draw missing lines directly in the browser. Perfect your image on the spot without switching to other tools.

ズームして線画を微調整

Fluid Canvas Navigation

Zoom in for pixel-perfect cleanup and pan smoothly. Intuitive controls designed for a natural feel on both desktops and tablets.

ローカル処理で安全

100% Local & Private

All processing happens directly on your device. Your images are never uploaded to any server, ensuring complete privacy and speed.

Who uses Tracelyx TraceLine?

Illustrators, designers, and artists who need production-ready line art — not just a simple filter.

Illustrators

Extract clean line art from reference photos as a starting point for hand illustration. Use the built-in draw and erase tools to refine every detail before exporting a production-ready base for your artwork.

Graphic Designers

Convert photos into line-style assets for posters, packaging, editorial layouts, and brand materials. TraceLine gives you a clean, editable line layer without the noise of automated vectorizers.

Print & Craft Makers

Create line art from photos for screen printing, laser cutting, embroidery patterns, and sticker designs. Extract and clean the lines you need, then export a crisp PNG ready for your production workflow.

Architects & Drafters

Turn scanned hand sketches and site photos into clean digital line drawings. Use the erase and draw tools to remove unwanted detail and reinforce structural lines before exporting.

Content Creators

Transform photos into line-art style visuals for social posts, YouTube thumbnails, and creative campaigns. A distinctive illustrated look that stands out in feeds without requiring advanced design skills.

Educators & Students

Create line-art diagrams and reference sheets from photos for educational materials, presentations, and study notes. All processing runs locally — no account or software installation needed.

Frequently Asked Questions

Is my image uploaded to a server?

No. All line extraction and editing happens entirely in your browser using local processing. Your files never leave your device and are never sent to any server.

What kinds of photos work best with TraceLine?

TraceLine works well on photos with clear subjects and defined edges — portraits, objects, architecture, sketches, and illustrations. For small or low-resolution images, running LinePrep first to scale up the source will produce cleaner results.

Can I edit the extracted lines after generation?

Yes. Use the Edit / Draw mode to erase unwanted noise, draw missing lines, and make pixel-level adjustments directly in the browser. Zoom in for detailed work and undo mistakes with a single click.

What is the difference between TraceLine and LinePrep?

LinePrep prepares your source image for tracing by scaling it up and reducing noise. TraceLine then performs the actual line extraction and lets you edit the result. For best results, use LinePrep first on small or noisy images, then open the output in TraceLine.

Can I use the output for commercial projects?

TraceLine produces line art from your own images, which you can use freely in your projects. Make sure you own the rights to the source images you upload.

Is Tracelyx TraceLine free?

Yes, completely free. No account required, no usage limits, no watermarks.

How to Use TraceLine: A Complete Guide

Getting Started in 3 Steps

TraceLine 3-step guide: upload, adjust, download
  1. Upload your image — Click the upload area or drag and drop any photo. TraceLine accepts JPEG, PNG, and WebP files. Because all processing runs entirely in your browser, there are no server-side file size restrictions.
  2. Choose a preset and adjust settings — Select from the line-art presets at the bottom of the canvas. Use the Contrast slider to control how bold or fine the extracted lines appear, and the Photo Fade slider to blend the original photo with the line art output.
  3. Refine and download — Switch to Draw or Eraser mode to clean up noise, fill in missing lines, or add your own marks. Zoom in for pixel-level precision. When satisfied, click Download to save your line art as a PNG file.

Tips for Best Results

Source image quality matters most. TraceLine performs best on photographs with strong contrast between the subject and background. Soft, low-contrast images — such as foggy scenes or overexposed photos — may produce faint or uneven lines. If your photo is small, blurry, or noisy, run it through LinePrep first to upscale and sharpen it before importing into TraceLine.

For detailed illustrations and objects, set the Contrast slider higher to capture fine internal lines, then use the Eraser tool to remove unwanted texture in areas you want to keep blank. For portraits, a medium Contrast setting typically preserves facial structure without over-extracting skin detail. The Undo button lets you step back freely, so experiment without hesitation.

Why Your Images Never Leave Your Device

TraceLine local processing — your image never leaves your browser

TraceLine processes images entirely inside your browser using the HTML Canvas API. Unlike most online image tools that send your files to a remote server, TraceLine never transmits your image data over the network. The moment you close the browser tab, all image data is gone — no server stores your files, no database logs your content, and no third party ever receives your images.

This local-first approach is especially important for professional work. Designers handling client assets, architects working with confidential drawings, and anyone processing sensitive visual content can use TraceLine with complete confidence. Privacy is not a paid tier — it is the fundamental architecture of every tool on Tracelyx.

Using TraceLine in Your Design Workflow

TraceLine workflow: photo to PNG line art to design tools

TraceLine is designed as a preparation step rather than a final output. The PNG you export works as a clean base layer for further work in Procreate, Photoshop, Illustrator, Clip Studio Paint, or any vector tracing application. Illustrators import the line art as a new layer and paint beneath it. Graphic designers use it as the foundation for vectorization. Craft makers scale it in cutting machine software before production.

For the cleanest vectorization results after exporting from TraceLine, use a threshold of around 128 in your tracing tool. If you need a true vector SVG, Inkscape's Trace Bitmap or Adobe Illustrator's Image Trace both work well with TraceLine output. Export at 2× or higher resolution from TraceLine to give your vectorizer finer line data to work with.

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