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Top 5 best Image Compressors

The internet is replete with websites and tools catering to end users seeking image size reduction. Within this article, we will meticulously catalog the five most exceptional image compressors, rigorously assessed and picked by our team.

Prior to enumerating the top 5 image compression tools, it is prudent to establish a clear understanding of what constitutes an image compressor and to delineate the essential attributes that qualify a particular tool as the preeminent image compressor.

What is image compressor?

A software application that reduces the size(weight) of the digital images is called an Image Compressor. Usually image compressors reduce the image file-size in bytes without degrading image quality below an acceptable threshold.

Image compression is essential for various applications, including web graphics, digital photography, video streaming, and more. It helps reduce storage space requirements, decrease transmission bandwidth, and improve loading times for web pages.

Types of Image Compression

There are two main types of image compression: lossless compression and lossy compression. Following is the major difference in both of them;

  1. Lossless Compression:
    • Lossless compression reduces the file size of an image without sacrificing any of the image’s original quality. When you decompress a losslessly compressed image, you get an exact replica of the original image.
    • Common lossless image compression formats include:
      • GIF (Graphics Interchange Format): Primarily used for simple images and animations. It uses a limited color palette.
      • PNG (Portable Network Graphics): Supports both lossless and lossy compression. It’s commonly used for web images with transparency.
      • BMP (Bitmap): An uncompressed format, but it can be compressed using lossless methods like Run-Length Encoding (RLE).
  2. Lossy Compression:
    • Lossy compression reduces the file size of an image by removing some of the image data. This results in a loss of image quality, but it can achieve much higher compression ratios compared to lossless methods.
    • Common lossy image compression formats and techniques include:
      • JPEG (Joint Photographic Experts Group): Widely used for photographs and complex images. You can adjust the degree of compression to balance quality and file size.
      • WebP: A modern image format developed by Google, which supports both lossless and lossy compression. It provides good quality with smaller file sizes.
      • JPEG 2000: A more advanced version of JPEG with better compression efficiency and quality, but it’s less commonly used than the standard JPEG.
      • HEIF (High Efficiency Image File Format): Developed by the MPEG group, it offers better compression and quality compared to JPEG.
      • AVIF (AV1 Image File Format): Based on the AV1 video codec, AVIF provides high compression efficiency and quality for images.

Features of the best image compressor tool

Usually the best image compressor will chosen according to the need. If someone is looking for the reduction file-size without losing the quality, will have other list than that of those who are looking for just file reduction regardless of losing quality of the image.

The best image compressor tools typically share several important features that make them effective and user-friendly. When evaluating image compressor tools, we have considered the following features:

  1. User-Friendly Interface: An easy-to-use and well-designed user interface can enhance the overall experience. If the isn’t user friendly then it has no worth at all, as end user will be unable to use/understand it properly.
  2. Image Format Support: Support for Various Image Formats: The tool should be capable of compressing a wide variety of image file formats, including JPEG, PNG, GIF, and more.
  3. Bulk Compression: The ability to compress multiple images at once can save time, especially when working with large numbers of images.
  4. Bulk download: The ability to download multiple compressed images as a zip file at once, can save time, especially when working with large numbers of images.
  5. Preview of Comparison: A preview feature to compare the original and compressed image sizes can help you evaluate the impact of compression. The tool should show the reduction in file size as a percentage or numerical value, giving you insight into the level of compression applied
  6. Lossless Compression: A good tool should compress image without degrading image quality below an acceptable threshold. That’s the optimal compression where you get your image file size reduced but without compromizing on the quality of the image.
  7. Compression Speed: Faster compression speeds are important, especially when processing large image files.
  8. Security and Privacy: Ensure that the tool respects your privacy and doesn’t store or share your images without permission.
  9. Platform Compatibility: The tool should be available for various operating systems and devices, including Windows, macOS, and mobile platforms.
  10. Price and Free Options: Consider the pricing structure, and look for free or trial versions to test the tool before purchasing. At least offer free version.

Top 5 best Image Compressors

By using in mind above mentioned 10 features of the best image compressor tool, we have picked up top 5 best image compressors.

  1. TinyPNG
    • TinyPNG ( is known for its efficient compression algorithms that can significantly reduce the file size of PNG and JPEG images.
    • It offers both lossy and lossless compression options.
    • The website has a simple and user-friendly interface, making it easy for users to upload and compress images.
  2. ImageOptim
    • ImageOptim ( is a free, open-source desktop application for macOS that allows you to compress images quickly and easily.
    • It supports various image formats and employs lossless compression techniques.
    • The tool provides batch processing for optimizing multiple images at once.
  3. Classtools24
    • Classtools24 ( is a collection of education tools for classroom. It also offers online image compressor tool that supports majority of the image formats, including WebP, PNG, JPG, AVIF, GIF or SVG images.
    • It provides lossless compression, allowing users to get compressed image without losing image quality.
    • Classtools24 allows to drag and drop image to instantly compress the image without clicking/pressing the browse button.
    • You can see the real time progress of each image as classtools24 image compressor displays the not only the progress of image uploading but also compressing and zipping.
    • One of the best feature is it allows to upload images in bulk that start compressing asynchronously and download back as a zip file instead of downloading each compressed image.
    • ( is a web-based tool that offers both lossy and lossless compression for JPEG, PNG, GIF, and SVG images.
    • It provides real-time previews of the compressed images, so users can compare the quality before and after compression.
    • The website is straightforward to use, and it doesn’t require registration.
  5. Optimizilla
    • Optimizilla ( is an easy-to-use online image compressor designed for JPEG and PNG files.
    • It allows you to adjust the compression level for each image separately, providing a fine level of control.
    • The website provides a side-by-side preview of the original and compressed images for visual comparison.


These image compressors cater to different user preferences, whether you need lossless or lossy compression, batch processing, or quick online optimization. To ensure you choose the best one for your specific needs, consider factors such as the type of images you are working with, the desired level of compression, and the ease of use. The choice between lossless and lossy compression depends on the specific requirements of the image and the desired trade-off between image quality and file size.


Muhammad Shehzad

Shehzad is an entrepreneur. He enjoys while writing about technologies. Badminton, Cricket, Counter strike and Mobile legend Bang bang are his favourite games to play.

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