Convert Raw Pixel Buffer to PNG

Convert a headerless raw pixel buffer file to a PNG image. You must provide the image dimensions, channel count, and bit depth.

Use this tool when you need to preview or export a headerless raw pixel buffer as a PNG image. It does not parse photographic camera RAW containers such as DNG, ARW, CR2, or NEF. The conversion is only correct when the width, height, channel count, and bit depth you enter exactly match the source buffer.

Click to upload file or drag and drop file here

Maximum file size: 200MB

Key Facts

Category
Images, Audio & Video
Input Types
file, text, select
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

Easily convert headerless raw pixel buffer files into standard PNG images. By specifying the exact image dimensions, color channels, and bit depth, this tool reconstructs raw binary pixel data into a viewable PNG file, making it perfect for debugging graphics pipelines, framebuffers, and custom image processing outputs.

When to Use

  • •When you have a raw binary file containing uncompressed pixel data and need to visualize it.
  • •When debugging custom camera sensors or image processing pipelines that output headerless raw formats.
  • •When you need to convert raw 8-bit or 16-bit grayscale, RGB, or RGBA buffers into standard PNG files.

How It Works

  • •Upload your headerless raw pixel buffer file.
  • •Enter the exact width and height of the image in pixels.
  • •Select the correct number of color channels (Grayscale, Grayscale + Alpha, RGB, or RGBA) and the input bit depth (8-bit or 16-bit).
  • •Choose your preferred PNG compression level and click convert to generate and download the PNG image.

Use Cases

Visualizing raw framebuffers extracted from embedded systems or GPU memory dumps.
Converting raw sensor outputs from machine vision cameras into standard images.
Verifying the output of custom graphics rendering engines during development.

Examples

1. Debugging an Embedded Framebuffer Dump

Embedded Systems Engineer
Background
An engineer has dumped the raw RGB display buffer from an LCD controller to debug a rendering glitch.
Problem
The dump is a headerless binary file, making it impossible to view in standard image viewers.
How to Use
Upload the raw dump file, set the width to 800, height to 480, select 3 channels (RGB), and set the bit depth to 8-bit.
Example Config
Width: 800, Height: 480, Channels: 3 (RGB), Bit Depth: 8-bit, Compression: 6
Outcome
A clear 800x480 PNG image is generated, showing the exact state of the display buffer for easy debugging.

2. Converting 16-bit Grayscale Medical Sensor Data

Imaging Software Developer
Background
A developer is working with a raw 16-bit grayscale sensor output from a medical imaging device.
Problem
The raw sensor output needs to be converted to a standard format for integration testing.
How to Use
Upload the raw sensor file, specify the dimensions as 1024x1024, select 1 channel (Grayscale), and choose 16-bit depth.
Example Config
Width: 1024, Height: 1024, Channels: 1 (Grayscale), Bit Depth: 16-bit, Compression: 9
Outcome
A high-fidelity 16-bit grayscale PNG image is created, preserving the full dynamic range of the sensor data.

Try with Samples

image, png, file
PNG Samples
Sample PNG images in different aspect ratios and resolutions
title token png
image, png
Web Image Processing Python Samples
Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion
matched family image,png
image, png
Camera RAW Photo File Samples
Downloadable sample files covering Sony ARW, Canon CR2, Adobe DNG, Nikon NEF, and a generic RAW binary file for testing camera RAW upload workflows.
title token raw
file
Web Image Processing Go Samples
Web Go image processing examples including image reading/saving, image resizing, and format conversion
matched family image,png
image, png

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FAQ

Can this tool convert camera RAW files like DNG, CR2, or NEF?

No, this tool only converts headerless, uncompressed raw pixel buffers, not photographic camera RAW formats.

What happens if I enter the wrong width or height?

The output image will appear skewed, scrambled, or fail to render because the pixel alignment will be incorrect.

Does this tool support 16-bit per channel raw data?

Yes, you can select either 8-bit or 16-bit per channel depth depending on your source buffer.

How do I handle transparency in my raw buffer?

Select the 4-channel RGBA option to preserve the alpha channel transparency in the output PNG.

What does the compression level option do?

It controls the PNG compression ratio; level 0 is uncompressed and fastest, while level 9 offers maximum compression but takes longer to process.

API Documentation

Request Endpoint

POST /en/api/tools/raw-to-png

Request Parameters

Parameter Name Type Required Description
imageFile file (Upload required) Yes -
width text Yes -
height text Yes -
channels select Yes -
bitDepth select Yes -
compression select No -

File type parameters need to be uploaded first via POST /upload/raw-to-png to get filePath, then pass filePath to the corresponding file field.

Response Format

{
  "filePath": "/public/processing/randomid.ext",
  "fileName": "output.ext",
  "contentType": "application/octet-stream",
  "size": 1024,
  "metadata": {
    "key": "value"
  },
  "error": "Error message (optional)",
  "message": "Notification message (optional)"
}
File: File

AI MCP Documentation

Add this tool to your MCP server configuration: 

{
  "mcpServers": {
    "elysiatools-raw-to-png": {
      "name": "raw-to-png",
      "description": "Convert a headerless raw pixel buffer file to a PNG image. You must provide the image dimensions, channel count, and bit depth.",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=raw-to-png",
      "command": "",
      "args": [],
      "env": {},
      "isActive": true,
      "type": "sse"
    }
  }
}

You can chain multiple tools, e.g.: `https://elysiatools.com/mcp/sse?toolId=png-to-webp,jpg-to-webp,gif-to-webp`, max 20 tools.

Supports URL file links or Base64 encoding for file parameters.

If you encounter any issues, please contact us at [email protected]