Getting Started with the Outline Tool
First, visit the HeronTool website and locate the "Outline" tool (under the Image Processing category). Click to enter, then upload the image you want to work with. The tool automatically analyzes edges, but you can manually adjust parameters for precise stroke control.
Step 1: Adjust Stroke Parameters
In the right panel, set the stroke "Width" (1-50 px), "Color" (from the palette or hex code), and "Opacity". To outline only specific areas, use "Mask Mode" and paint over the regions you want. Click "Preview" to see the result.
Step 2: Apply and Export
Once satisfied, click "Apply" to generate a high-resolution outlined image. Export as PNG (for transparent backgrounds) or JPG. For batch work, use HeronTool's "Batch" feature to apply the same outline style to multiple images at once.
FAQ
Q: How do I make outlines look more natural? Lower opacity to around 80% and choose a color close to the image's dominant tone.
Q: What formats are supported? JPG, PNG, BMP, and WebP.
Q: Can I undo? Yes, there's an undo before preview, but after applying, you'll need to re-upload the original.
Additionally, HeronTool offers a "Blog Outline" (文章大纲) tool for organizing your writing, complementing the image outline tool for cohesive content and visuals.
