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Convert PNG to Interlaced PNG

Convert PNG images to interlaced PNG format for better loading performance and user experience

Click to upload file or drag and drop file here

Maximum file size: 50MB Supported formats: image/png

0 90 100

Quality of the final interlaced PNG image

0 9 9

0 = no compression, 9 = maximum compression (recommended for interlaced)

Use adaptive filtering for better compression with interlaced images

Key Facts

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

Overview

Optimize your web images by converting standard PNG files into interlaced PNGs, which use the ADAM7 algorithm to allow images to appear gradually as they load, significantly improving perceived performance for users on slower connections.

When to Use

  • •When you want images to display a low-resolution preview before the full file finishes downloading.
  • •When optimizing website assets to improve user experience on high-latency mobile networks.
  • •When you need to balance image quality with progressive rendering capabilities.

How It Works

  • •Upload your standard PNG image file to the tool.
  • •Adjust the compression level and quality settings to suit your specific file size requirements.
  • •Enable adaptive filtering to ensure the most efficient encoding for the interlaced structure.
  • •Process the file to generate an interlaced PNG that renders progressively in web browsers.

Use Cases

Improving the perceived loading speed of large hero images on landing pages.
Enhancing user experience for mobile users accessing image-heavy web content.
Preparing web graphics that need to remain visible and recognizable even during slow network conditions.

Examples

1. Optimizing Hero Banners

Web Developer
Background
A website hero banner is taking too long to load, leaving a blank space for users on mobile devices.
Problem
The image is too large and loads all at once, causing a poor user experience.
How to Use
Upload the hero image, set compression to 9, and enable adaptive filtering to generate an interlaced version.
Example Config
quality: 85, compressionLevel: 9, adaptiveFiltering: true
Outcome
The image now renders a low-resolution preview immediately, keeping the user engaged while the full-quality image loads.

2. Reducing Perceived Latency

UI/UX Designer
Background
A product gallery page contains high-resolution PNG icons that appear abruptly once fully loaded.
Problem
The sudden appearance of images creates a jarring visual jump for the user.
How to Use
Convert the icons to interlaced PNGs to allow for a smooth, progressive fade-in effect.
Example Config
quality: 90, compressionLevel: 9, adaptiveFiltering: true
Outcome
The icons now appear gradually, creating a smoother and more professional visual transition for the gallery.

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
Windows Image Processing C++ Samples
Windows C++ image processing examples including reading/saving images, resizing, and format conversion using Windows Imaging Component (WIC)
preferred input family image
image

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FAQ

What is an interlaced PNG?

An interlaced PNG uses the ADAM7 algorithm to store image data in a way that allows the browser to display a blurry, low-resolution version of the image before the entire file is downloaded.

Does interlacing increase file size?

Interlacing can slightly increase the file size compared to a non-interlaced PNG, but it provides a much better perceived loading experience for the end user.

What is the recommended compression level?

A compression level of 9 is recommended for interlaced images to ensure the best balance between file size and image quality.

Can I convert multiple images at once?

This tool is designed to process one PNG image file at a time.

Is the image quality lost during conversion?

You can control the output quality using the quality slider, allowing you to maintain high visual fidelity while enabling the interlaced feature.

API Documentation

Request Endpoint

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

Request Parameters

Parameter Name Type Required Description
imageFile file (Upload required) Yes -
quality range No Quality of the final interlaced PNG image
compressionLevel range No 0 = no compression, 9 = maximum compression (recommended for interlaced)
adaptiveFiltering checkbox No Use adaptive filtering for better compression with interlaced images

File type parameters need to be uploaded first via POST /upload/png-to-interlaced-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-png-to-interlaced-png": {
      "name": "png-to-interlaced-png",
      "description": "Convert PNG images to interlaced PNG format for better loading performance and user experience",
      "baseUrl": "https://elysiatools.com/mcp/sse?toolId=png-to-interlaced-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]