Image to ASCII Art Converter
Transform any image into ASCII art with four rendering algorithms, six character sets, and colored output. Upload a photograph, logo, or illustration by clicking, dragging, or pasting from your clipboard. Choose between luminance mapping, Sobel edge detection, Floyd-Steinberg dithering, or hybrid mode. Fine-tune with brightness, contrast, and width controls. Export as plain text, colored HTML, or ANSI terminal output.
Drop an image, paste from clipboard, or click to upload
Supports PNG, JPG, GIF, WebP
Frequently Asked Questions
How does image to ASCII conversion work?
The converter samples the brightness of small regions in your image and maps each region to an ASCII character. Darker areas get denser characters like @ or #, while lighter areas get sparser characters like periods or spaces. This tool offers four algorithms: standard luminance mapping, Sobel edge detection for line-art outlines, Floyd-Steinberg dithering for smoother gradients, and a hybrid mode that combines luminance with edges.
What is the Braille HD character set?
Braille mode uses Unicode braille patterns (U+2800 to U+28FF) where each character encodes a 2x4 grid of dots. This gives 8 times the resolution of regular ASCII characters, producing much sharper and more detailed output. It works especially well for photographs and detailed illustrations.
What is the difference between the four algorithms?
Luminance mapping is the classic approach that maps pixel brightness to characters. Edge detection uses the Sobel operator to find outlines and renders them as directional line characters (|, -, /, \). Dithering uses Floyd-Steinberg error diffusion to produce smoother gradients with better tonal accuracy. Hybrid mode overlays detected edges on top of luminance-mapped characters for the most detailed result.
How does colored output work?
In Colored HTML mode, each ASCII character is wrapped in an HTML span element with the original pixel color. The preview shows the actual colored characters on a dark background. You can download the result as an HTML file or copy it. ANSI mode generates terminal escape codes for 256-color output that works in most modern terminals.
What image formats are supported?
The converter accepts PNG, JPEG, GIF, and WebP image formats. You can upload by clicking, dragging and dropping, or pasting from your clipboard (Ctrl+V / Cmd+V). For best results, use high-contrast images with clear subjects.
How do I get the best results?
Start with a high-contrast image. Use the brightness and contrast sliders to fine-tune the tonal range. Try the Detailed character set for the widest range of tones, or Braille for maximum resolution. For photos, try Dithering mode. For logos and line art, Edge Detection works best. Adjust the output width to balance detail against display width.