What image formats can I upload?

You can upload PNG, JPEG, WEBP, AVIF, TIFF, BMP, and GIF files.

What is the difference between Floyd-Steinberg dithering and no dithering?

Floyd-Steinberg dithering diffuses quantization errors to prevent color banding in low-bit modes, while no dithering produces solid color blocks.

How does the black/white threshold option work?

It determines the luminance cutoff point (from 0 to 100) when converting an image to 1-bit monochrome.

Can I preserve metadata like EXIF tags during conversion?

Yes, you can check the 'Preserve Safe Metadata' option to keep safe metadata in the output PNG.

Why would I use 8-bit indexed PNG instead of 24-bit RGB?

An 8-bit indexed PNG limits the palette to 256 colors, which significantly reduces file size while maintaining visual quality for simple graphics.

Elysia Tools

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Image Bit Depth to PNG Converter

Convert images to exact monochrome, indexed, grayscale, RGB, or RGBA PNG bit depths with verified output.

Execution

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1 examples

Image Bit Depth to PNG Converter

Convert images to exact monochrome, indexed, grayscale, RGB, or RGBA PNG bit depths with verified output.

{
  "type": "file",
  "filePath": "/public/samples/image-bit-depth/image-to-bit-depth-png-example.png"
}

Inputs

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6 options

FilesUpload source files for this workflow.1

Image FilefileRequired

Single file max size: 100 MBSupported types: image/png, image/jpeg, image/webp, image/avif, image/tiff, image/bmp, image/gif

SettingsAdjust formats, ranges, numbers, and modes.4

Output PNG ModeselectOptionalDitheringselectOptionalBlack/White ThresholdnumberOptionalBackground ColorcolorOptional

TogglesEnable or disable optional behavior.1

Preserve Safe MetadatacheckboxOptionalEnabled when checked

Result

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Samples

Image Bit Depth to PNG Converter

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Learn when to use this tool, what it supports, and how real users apply it.

Key facts

Overview

When to use

How it works

Use cases

Examples

1. Optimizing Assets for an E-Ink Display

2. Reducing Web Asset File Size

FAQ

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