Pixelcut
A final design result showing a black and white graphic of a tree with its outlines made extremely thick and bold, demonstrating an outline thickener tool.

AI Outline Thickener

Trusted by 70 million people
171,800 Reviews
Developer API
Available on iPhone & Android

How to Thicken Image Outlines

  1. 1

    Upload your image

    Start by uploading the drawing, illustration, or photo you want to edit. The tool works with various image formats.

  2. 2

    Enter your prompt

    Describe how you want the outlines to look. For example, type 'Make the outlines on this drawing 50% thicker'.

  3. 3

    Generate your edit

    Click the generate button and let the AI intelligently thicken the lines based on your instructions.

  4. 4

    Download your image

    Your image with newly thickened outlines is ready. Download the high-resolution PNG file to use in your projects.

Give your illustrations and drawings a powerful new look by instantly increasing their line weight. A thicker outline can transform the mood of your artwork, making subjects pop and adding a sense of stability and presence, much like how bold lines can emphasize a tree's solid form. Simply upload your image, and our AI tool handles the rest. This process allows artists and creators to experiment with different visual styles, adding impact to their designs without needing to redraw anything, saving time and effort.

Instantly Enhance Your Line Art

A comparison image showing an apple with a thin outline on the left and the same apple with a very thick, bold outline on the right, illustrating an outline thickener effect.
You have complete creative control over your image's line weight without needing complex software. Describe how you want the lines to appear, whether you're aiming for a subtle enhancement or a dramatic, heavy outline. You can guide the AI to achieve the exact thickness you envision by simply typing instructions. This text-based approach simplifies the editing process, making it accessible for everyone to modify their images quickly and effectively. Get the perfect line weight for your project in just a few moments.

From Subtle to Bold in Seconds

A before-and-after image demonstrating an outline thickener. On the left is a yellow star with a thin black outline, and on the right is the same star with a very thick, bold black outline.
Thickening the outlines of an image makes it more eye-catching and readable, which is perfect for a variety of applications. Use it to make your logos more prominent, prepare illustrations for printing, or make your social media posts stand out. The enhanced definition ensures your visuals grab attention and communicate clearly. Every edit results in a high-resolution PNG file that is crisp, clean, and ready for use in both digital and print formats, ensuring your final product always looks professional.

Create High-Impact Visuals for Any Project

A before-and-after style illustration showing two cartoon clouds. The cloud on the left has a very thin outline, while the identical cloud on the right has a very thick, bold outline, demonstrating the effect of an outline thickener.
It’s Fast: Upload your image and get bolder lines in seconds. It’s Easy to Use: No complex tools or skills needed. Just upload your image and write a simple text prompt to describe the desired thickness. AI-Powered: Our tool intelligently identifies and thickens the outlines in your image for a consistent look. Versatile Editing: Works great on a wide range of images, including digital illustrations, scanned drawings, and even photographs. High-Quality Downloads: Receive a high-resolution, watermark-free PNG file every time.

Why use Pixelcut's AI Outline Thickener?

A before-and-after graphic showing two star icons. The 'before' star on the left has a thin outline, and the 'after' star on the right has a very thick, bold outline, illustrating the effect of an outline thickener.
Illustration and Comics: Add emphasis and a professional touch to your character designs and comic book panels. Coloring Pages: Thicken the lines of your designs to create clear and easy-to-color pages for kids and adults. Logo Design: Make your brand's logo more impactful and visible across different mediums. Crafting and Stencils: Create bold, easy-to-trace outlines for stencils, vinyl cuts, and other DIY projects. Photography: Apply a unique stylistic effect to your photos by adding a graphic, illustrative outline to your subjects.

Outline Thickener Use Cases

A before-and-after illustration of an outline thickener. On the left, a blue circle and yellow star have thin black outlines. On the right, the same shapes have very thick, bold outlines, making them stand out.

Frequently Asked Questions

Pixelcut is loved by over 2 million people

  • My favorite app

    Great app, easy to use. Helps our small business save time and money to create different marketing materials professionally. Thank you.
    Shaelyn D.
  • Best background remover

    I need a good background remover for my work and I've been through them all it feels like. This one is the best by far. It's so easy to use and the results always look amazing. Thank you Pixelcut!
    Kira H.
  • Love it

    It's amazingly easy and gives the perfect results for my bags and accessories. It looks like it was done by a professional photographer.
    Mary J.