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Convert PNG to PBM

Convert PNG images to PBM (Portable Bitmap) format for monochrome image storage

Click to upload file or drag and drop file here

Maximum file size: 10MB Supported formats: image/png

Key Facts

Category
Media
Input Types
file, number
Output Type
file
Sample Coverage
4
API Ready
Yes

Overview

This tool allows you to convert PNG images into PBM (Portable Bitmap) format, enabling efficient storage and processing of monochrome bitmap data.

When to Use

  • •When you need to prepare images for legacy systems or hardware that only support monochrome bitmap formats.
  • •When you want to reduce image complexity by converting color or grayscale PNGs into a strict black-and-white PBM file.
  • •When you are developing software that requires simple, uncompressed pixel data for image processing tasks.

How It Works

  • •Upload your source PNG file using the file selector.
  • •Adjust the binarization threshold value between 0 and 255 to define the cutoff point for black and white pixels.
  • •Click the convert button to process the image and download your new PBM file.

Use Cases

Preparing graphical assets for low-resolution embedded displays.
Converting images for use in monochrome printing or specialized scanning software.
Creating simple bitmap masks for image editing workflows.

Examples

1. Preparing Icons for Embedded Displays

Embedded Systems Engineer
Background
The engineer is designing a UI for a monochrome LCD screen that requires raw PBM files.
Problem
The source icons are high-resolution color PNGs that need to be converted to a simple 1-bit format.
How to Use
Upload the icon PNG and set the threshold to 128 to ensure clear contrast.
Example Config
threshold: 128
Outcome
A clean, monochrome PBM file ready for integration into the device firmware.

2. Optimizing Graphics for Legacy Software

Software Developer
Background
A legacy application requires input images to be in the PBM format for processing.
Problem
The developer has a library of PNG images that the legacy software cannot read.
How to Use
Upload the PNG and adjust the threshold to 200 to capture only the darkest lines of the image.
Example Config
threshold: 200
Outcome
A converted PBM file that the legacy application can successfully import and process.

Try with Samples

image, png, file
PNG Samples
Sample PNG images in different aspect ratios and resolutions
title token png
image
Web Image Processing Python Samples
Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion
preferred input family image
image
Web Image Processing Go Samples
Web Go image processing examples including image reading/saving, image resizing, and format conversion
preferred input family image
image
Android Image Processing Kotlin Samples
Android Kotlin image processing examples including reading/saving images, scaling, and format conversion
preferred input family image
image

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FAQ

What is a PBM file?

PBM stands for Portable Bitmap, a simple monochrome image format that stores pixels as either black or white.

What does the binarization threshold do?

The threshold determines which pixels become black and which become white based on their original brightness; values below the threshold become black, and those above become white.

Can I convert color images to PBM?

Yes, the tool will automatically convert color information into monochrome based on the threshold you set.

Is there a file size limit?

Yes, the maximum file size for uploads is 10MB.

Does this tool support batch conversion?

No, this tool currently processes one PNG file at a time.

API Documentation

Request Endpoint

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

Request Parameters

Parameter Name Type Required Description
imageFile file (Upload required) Yes -
threshold number No -

File type parameters need to be uploaded first via POST /upload/png-to-pbm 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-png-to-pbm": {
      "name": "png-to-pbm",
      "description": "Convert PNG images to PBM (Portable Bitmap) format for monochrome image storage",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=png-to-pbm",
      "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]