About

This tool generates a 1×1 pixel PNG image directly in your browser. Often referred to as a "spacer GIF" or "placeholder", single-pixel images are a staple in web development for layout adjustment, tracking pixels, or efficiently filling backgrounds with a solid color using minimal bandwidth.

Unlike standard image editors that require complex setups to create such a small file, this utility uses the Canvas API to render the byte stream instantly. It supports full alpha transparency, allowing you to create the ubiquitous "transparent pixel" used to push content without visible elements. The generated files are optimized, typically weighing less than 100 bytes.

Formulas

The tool constructs the image by defining a standard RGBA color model where the final pixel color C is defined as:

C = RGBA

Where R, G, and B are integers in the set Z such that 0 ≤ x ≤ 255, and A (Alpha) is a float where 0.0 represents full transparency and 1.0 represents full opacity. The browser converts this data into a Base64 string using the schema:

data:image/png;base64,[encoded_data]

Reference Data

Property	Value / Standard	Description
Dimensions	1×1 px	Smallest possible raster image size.
File Format	PNG (Portable Network Graphics)	Lossless compression, supports Alpha channel.
Header Signature	89 50 4E 47	Magic bytes identifying the file as PNG.
Color Depth	32-bit (RGBA)	8 bits per channel (Red, Green, Blue, Alpha).
Typical Size	68 - 95 Bytes	Extremely lightweight for fast loading.
MIME Type	image/png	Standard internet media type.
Encoding	Base64	Text representation for embedding directly in HTML/CSS.

Frequently Asked Questions

Set the "Opacity" slider to 0%. The preview background will show a checkerboard pattern, indicating the pixel is fully transparent. This is commonly used for "spacer" images.

Yes. Copy the generated Base64 string and use it in your CSS like this: background-image: url('data:image/png;base64,...');. This saves an HTTP request.

A 1x1 pixel PNG contains minimal data: a header, a tiny data chunk (IDAT) describing one pixel, and an end chunk (IEND). The compression algorithm efficiently handles uniform data.

Yes. The image generation happens entirely within your browser's memory using the HTML5 Canvas API. No data is sent to any server.