Multi-color Gradient PNG Creator

Generates a pixel-by-pixel continuous horizontal gradient PNG that smoothly blends between 2 to 6 hex color stops you provide, entirely in your browser, ready to download. A free online tool from Staaarter, right in your browser.

Runs locallyUpdated 2026-07-26

Overview

Introduction

This tool builds a smooth, continuous gradient PNG that blends across up to 6 hex color stops, computed pixel by pixel in your browser.

Unlike a discrete swatch strip, every column gets its own precisely interpolated color, so the transition looks seamless.

What Is Multi-color Gradient PNG Creator?

A pure pixel generator that treats the list of hex colors as evenly-spaced stops along the canvas width, and linearly interpolates RGB values between each consecutive pair of stops for every column.

The result is a genuinely continuous multi-stop gradient, the same visual effect as a CSS linear-gradient with multiple color stops, rendered as a real PNG file.

How Multi-color Gradient PNG Creator Works

Each column's horizontal position is normalized to a value from 0 to 1, then mapped onto one of the color-stop segments (the space between two consecutive stops).

Within that segment, the column's exact fractional position determines how far to linearly interpolate between the segment's two RGB endpoints, and the resulting color fills every pixel in that column.

When To Use Multi-color Gradient PNG Creator

Use it whenever you need a smooth multi-color background, banner, or design element, such as a brand-colored gradient header image.

It's also useful for previewing how several brand or theme colors blend together before committing to them in a design.

Features

Advantages

  • Produces a genuinely continuous, artifact-free gradient rather than visible color bands.
  • Supports up to 6 color stops for complex multi-color blends, not just a simple two-color fade.
  • Runs entirely client-side with no external dependencies.

Limitations

  • The gradient direction is always horizontal; there's no vertical or diagonal option in this tool.
  • Color stops are always evenly spaced along the width; there's no way to bunch stops closer together at one end.

Examples

Two-color sunset fade

Input

width=600, height=100, colors=[#FF512F, #F09819]

Output

A 600x100 PNG smoothly blending from orange-red to golden orange

With exactly 2 stops, the entire width is one continuous interpolation segment.

Three-color brand gradient

Input

width=600, height=100, colors=[#6A00F4, #E100FF, #00C2FF]

Output

A 600x100 PNG blending through purple, magenta, and cyan across two segments

With 3 stops, the first half of the width interpolates between stops 1-2 and the second half between stops 2-3.

Best Practices & Notes

Best Practices

  • Use a wide canvas for the smoothest visual blend, since more pixels means finer interpolation steps.
  • Order your color stops so adjacent colors are reasonably close in hue for the most pleasing transitions.

Developer Notes

The segment-selection and RGB interpolation math lives in a pure, DOM-free lib function operating on a plain pixel buffer, fully unit-testable in isolation; only the component paints the resulting buffer onto a <canvas> for preview and PNG download.

Multi-color Gradient PNG Creator Use Cases

  • Designing a smooth multi-color banner or header background
  • Previewing a brand color palette as a blended gradient
  • Generating gradient textures for UI or game asset design

Common Mistakes

  • Providing only 1 color stop, which is rejected since a gradient needs at least 2 endpoints.
  • Expecting a vertical gradient — this tool only produces horizontal blends.

Tips

  • Use the Gradient Palette Generator afterward if you want a handful of discrete swatch colors sampled from the same gradient.
  • Try reordering your color stops to see how the transition order changes the overall visual flow.

References

Frequently Asked Questions