# Convert PNG to Interlaced PNG

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

> Canonical page: https://elysiatools.com/en/tools/png-to-interlaced-png

- **Category:** Media

- **Keywords:** png, interlaced, convert, image, format, loading, performance, optimization, adam7

## 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.

## Inputs

- **PNG Image File** (file): Select PNG image to convert to interlaced
- **Quality (0-100)** (range): Quality of the final interlaced PNG image
- **Compression Level (0-9)** (range): 0 = no compression, 9 = maximum compression (recommended for interlaced)
- **Adaptive Filtering** (checkbox): Use adaptive filtering for better compression with interlaced images

## 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.

## Frequently asked questions

### 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.

## Related tools

- [Animated WebP/APNG to MP4](https://elysiatools.com/en/tools/animated-webp-apng-to-mp4): Convert animated WebP or APNG images to MP4 video format using ImageMagick or FFmpeg command line tools
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- [Convert AVIF to PNG](https://elysiatools.com/en/tools/avif-to-png): Convert AVIF images to PNG format with transparency support and high quality output
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- [Convert CR2 to PNG](https://elysiatools.com/en/tools/cr2-to-png): Convert Canon CR2 RAW files to PNG format. Automatically extracts image dimensions and metadata from the RAW file.
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- [Convert DNG to PNG](https://elysiatools.com/en/tools/dng-to-png): Convert DNG (Digital Negative) RAW files to PNG format. Automatically extracts image dimensions and metadata from the RAW file.

## Samples

- [PNG Samples](https://elysiatools.com/en/samples/png-samples): Sample PNG images in different aspect ratios and resolutions
- [PNG Viewer Samples](https://elysiatools.com/en/samples/png-viewer-samples): Sample PNG, BMP and AVIF images for the in-browser PNG Viewer
- [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion
- [Web Image Processing Go Samples](https://elysiatools.com/en/samples/web-image-processing-go): Web Go image processing examples including image reading/saving, image resizing, and format conversion

## Related content

- [Image Encoding Tuning for Weight, Loading, and Delivery](https://elysiatools.com/en/hubs/image-encoding-and-delivery-optimization): Tune PNG bit depth, palette, and transparency, choose progressive or baseline JPEG loading, dial WebP quality modes, and compress TIFF for archives until every image fits its destination.