Comparing JPEG Low Quality Levels

This section provides a quick comparison of image quality of JPEG image files with some lower compression quality levels 75%, 50%, and 25%.

After comparing JPEG images with high compression quality levels: 95%, 90% and 85%, I want to look at some lower levels: 75%, 50% and 25%.

1. Open GIMP-Red-Gradient-Spiral.xcf and save it as GIMP-Red-Gradient-Spiral_075.jpg in JPEG format with a 75 quality level.

2. Open GIMP-Red-Gradient-Spiral.xcf and save it as GIMP-Red-Gradient-Spiral_050.jpg in JPEG format with a 50 quality level.

3. Open GIMP-Red-Gradient-Spiral.xcf and save it as GIMP-Red-Gradient-Spiral_025.jpg in JPEG format with a 25 quality level.

4. Open all JPEG files with Microsoft Paint and view them in Zoom/Large Size mode. We can do comparison of different JPEG quality levels now:
JPEG Image Quality Comparison

Obviously, lower JPEG quality levels give us very poor quality images.

Of course, lower JPEG quality level results smaller image file size:

    1,443 GIMP_Red_Gradient_Spiral_025.jpg
    1,928 GIMP_Red_Gradient_Spiral_050.jpg
    2,603 GIMP_Red_Gradient_Spiral_075.jpg
   10,914 GIMP_Red_Gradient_Spiral_100.jpg

Last update: 2008.

Table of Contents

 About This Book

 Introduction to Microsoft Windows

 Introduction to Windows Explorer

 Introduction to Internet Explorer

 "Paint" Program and Computer Graphics

 GIMP - GNU Image Manipulation Program

JPEG Image File Format Quality and Size

 Saving Images in JPG/JPEG Format

 Saving Images in BMP (Windows Bitmap) Format

 Comparing File Sizes of Image File Formats

 Comparing JPEG High Quality Levels

Comparing JPEG Low Quality Levels

 GIF Image File Format and Transparent Background

 "WinZip" - ZIP File Compression Tool

 "WinRAR" - RAR and ZIP File Compression Tool

 FTP Server, Client and Commands

 "FileZilla" - Free FTP Client and Server

 Web Server Log Files and Analysis Tool - "Analog"

 Spyware Adware Detection and Removal

 IE Addon Program Listing and Removal

 Vundo (VirtuMonde/VirtuMundo) - vtsts.dll Removal

 Trojan and Malware "Puper" Description and Removal

 VSToolbar (VSAdd-in.dll) - Description and Removal

 Spybot - Spyware Blocker, Detection and Removal

 Setting Up and Using Crossover Cable Network

 Home Network Gateway - DSL Modem/Wireless Router

 Windows Task Manager - The System Performance Tool

 "tasklist" Command Line Tool to List Process Information

 "msconfig" - System Configuration Tool

 Configuring and Managing System Services

 Windows Registry Key and Value Management Tools

 Startup Programs Removal for Better System Performance

 Winsock - Windows Sockets API

 Java on Windows

 Glossary of Terms

 Outdated Tutorials

 References

 PDF Printing Version