ASCII Art Generator

The ASCII Art Generator converts any image — a photo, a logo, a screenshot, a meme — into text made entirely of characters that you can copy, paste, download or save as a picture. ASCII art is text-art: instead of pixels, the shading of your image is recreated with letters, digits and punctuation, where dense characters stand in for dark areas and sparse characters for light ones. It is perfect for README banners, code-comment headers, terminal splash screens, retro forum posts, email signatures and shareable social images.

Unlike most online converters, this tool runs 100% in your browser. Your image is never uploaded, so it is safe for private photos, internal logos and anything you would rather not send to a third-party server. It is fast, free and works offline once the page has loaded.

How it works

When you load an image, the tool draws it onto a tiny off-screen canvas whose width equals the number of characters you asked for. Because a monospace glyph is roughly twice as tall as it is wide, the height is sampled at half scale so the final art keeps the correct proportions. For every cell the tool reads the red, green and blue values, composites transparent pixels over white, applies your brightness and contrast adjustments, then computes the perceptual luminance using the standard weighting 0.299·R + 0.587·G + 0.114·B.

That brightness — a value between 0 and 1 — is mapped onto a character ramp ordered from dark to light. The darkest pixels pick the densest glyph at the start of the ramp; the brightest pick a space at the end. Switching ramps changes the texture: the Standard ramp has 70 steps for smooth photographic shading, while Block shades, Simple, Binary, Dots and Hash ramps give cleaner, more graphic results. The Invert option swaps the mapping for light-on-dark terminals, and Colour mode keeps each character tinted with its source pixel for vivid, poster-like output.

Example

Take a square logo and set the width to 80 characters. With the Standard ramp you get a detailed greyscale rendering about 80 columns wide and 40 rows tall. Switch to Block shades and the same logo turns into clean filled blocks that read well at a glance. Nudge contrast up by 30 to make edges pop, tick Colour, and download a PNG to post the art straight to social media. Need it for a code comment instead? Choose the Simple ramp, copy the text, and paste plain @%#*+=-:. characters that survive any editor.

Every conversion, adjustment and export happens locally — your image and the resulting art stay entirely on your device.