image Compressor Tools for Optimization

Doesn’t it seem too tiresome and tedious when a website takes an extra fraction of second to load? Speed up your website and save the bandwidth by polishing your bloated images using these top image compressor tools mentioned below.

Images are vital for a website to gain and retain the attention of the users. The photographs taken with modern high-quality cameras come with high definition (big image files), which are not suitable to use on the web pages as it is, which leads to high load time. In one of our previous posts, we had provided some simple tips to speed up a website. It concludes that Image Compression facilitates the reduction of the file size hence, making it optimized for the website. Now, Let’s discuss some of the popular image compressor tools available on the Internet, to help you facilitate with speeding up your website!

What are Image Compressor Tools?

Image compression is a manner in which data is compressed especially digital images, in order to cut down the value of transmission and storage. There are several such tools available online which help the websites in the image optimization, hence loading quickly in the browser.

These tools help in pacing up the website’s functioning. In fact, research shows that for every additional second a website takes to load, it witnesses a prominent loss in the conversions. Therefore, these tools are a must when it comes to balancing the load speed. And in turn, maintaining the SERP ranking. As it seems like a “ranking factor”, suggested by Google. And, it planned on to move on to ‘mobile first‘ in 2017.

“To make our results more useful, we’ve begun experiments to make our index mobile-first. Although our search index will continue to be a single index of websites and apps, our algorithms will eventually primarily use the mobile version of a site’s content to rank pages from that site, to understand structured data, and to show snippets from those pages in our results. Of course, while our index will be built from mobile documents, we’re going to continue to build a great search experience for all users, whether they come from mobile or desktop devices.

If you have a responsive site or a dynamic serving site where the primary content and markup is equivalent across mobile and desktop, you shouldn’t have to change anything.” – GOOGLE

Thus, let’s move ahead and witness some of these image compressor tools which are ruling the market these days;

1. ImageOptim

ImageOptim image compressor tool

This is a lossless image compressor tool. It is the one in which quality of the image does not get affected while reducing its size. It is pretty smooth and efficient to get a hand on. Once you download it, all you need to do is ‘drag and drop’ the images so as to compress them. If you are operating on Mac system, then this is the blogging tool one must have in order to produce ‘web-ready’ images.


  • SVG image optimizations via SVGO.
  • Supports multiple image formats like png, jpeg, & .gip animations.
  • Openly available and is completely free.


  • Compatibility with Mac only.
  • It strips down the metadata like Geolocation of the image, EXIF etc.

2. OptiPNG

OptiPNG image compressor tool

It is a small command-line tool equipped with PNG image optimizers. It can magically shrink the size without any further loss. It transmutes images with external formats like BMP, GIF, PNM and TIFF & also acts as a PNG integrity checker.


  • Examines several parameters for the sake of providing smallest file size.
  • Efficient single-purpose image optimizer.


  • Command line tool can be difficult to use for novice users
  • Multiple images sometimes get defined on the same command line.
  • Functioning is unpredictable; sometimes no modifications take place while, at times, shrink some files by 20% or so.

3. jStrip

jStrip image compressor tool

It is a tool pertaining to the open and free source which helps in cutting the file size without having to forego its quality. It does not modify the compressed image data thus, less bandwidth is utilized by webmasters.


  • No modification of the compressed image data.
  • Also notifies when no changes are required.


  • Overwrites the original file with stripped version.

4. Caesium Image Compressor

Caesium Image Compressor tool

This is a free and open source image compressor which is compatible with windows. It can compress PNG, JPG, JPEG and BMP images while providing the flexibility to choose the compression level for images.


  • Handiness to choose different compression levels
  • Provides one with the comparison preview of originally uploaded and compressed images.
  • Lets one recognize the space they’ve saved due to compression.

5. PNG Gauntlet

PNG Gauntlet image compressor tool

This tool is specialized in optimization of PNG files and is available for windows. It is suitable for converting GIF, JPEG, TIFF, and BMP image files into PNG format. To get the possible smallest PNG images, it unites PNGOUT, OptiPNG, and DeflOpt techniques.


  • An effortless tool to employ.
  • Can witness the comparison parallelly in real time.


  • Only a few options for stating preferences.

6. PNG Optimizer

PNG Optimizer image compressor tool

Yet another PNG image optimizer on our list is PSYDK’s PngOptimizer. It can also convert BMP, GIF and TGA images into PNG images. This application is available in two variations: Windows x64 (64 bits) and Windows x86 (32 bits).


  • Notably reduces the PNG size making them downloadable at a faster pace.
  • Rapid processing on multicore CPUs.
  • It can optimize animated PNGs.


  • Only compatible with PNG files.


RIOT image compressor tool

Radical Image Optimization Tool (RIOT) possess the ability to optimize JPEG, GIF, and PNG files. It renders flexibility to upload files in batch mode while providing one a free-pass to determine the number of colors, contrast, brightness, gamma, invert and metadata settings for the images. The basic tools like pan, zoom, rotate and flip are also present in its interface.


  • It can also perform the function of a resizing tool.
  • It can assist various resample filters like Lanczos3, Catmull Rom, Bicubic, and others.


  • It’s GUI is apprehensible, but may puzzle irregular users.

8. File Optimizer

File Optimizer image compressor tool

The File Optimizer can compress almost any file format. It has a plain interface, in which a file can be added simply by dragging. In the column, the original and compressed file sizes with relative percentage size of compressed images can be seen. Spare metadata and other information are removed for decreasing the file weight.


  • It has a rooted, upfront and user-friendly interface.
  • It provides terrific results at compression which can’t be judged by the look of its interface.


  • It replaces the source file but it is directed to Recycle Bin which makes it retrievable yet this can be a trouble.
  • Currently, it’s interface is only confined to the English language

Google’s Bonus: Guetzli – Image Compressor tool

Cookie as meant in Swiss-German language, Guetzli, is a new open source JPEG encoder created by Google itself for digital images and web graphics. This freshly released algorithm provides high quality and visually lossless image compression. You can get it from here.

It claims to deliver quality pictures which are approximately 35% smaller than any other available methods for that matter. It has been developed with an aim of providing a smooth user experience in terms of image compression. Since images offer the biggest contribution to the web page sizes; optimizing them is the most essential part of improving your site’s performance. Guetzli is also said to be very similar to Google’s Zopfli, in terms of its algorithm.

“Approximates color perception and visual masking in a more thorough and detailed way than what is achievable by simpler color transforms and the discrete cosine transform.” (Source)

According to some reviews;

“Guetzli is slower than the encoders it out-performs”PetaPixel

“The one downside of Guetzli is that the use of search algorithms takes ‘significantly longer’ to compress image file sizes than existing methods.”ZDNet

“It’s most likely useful on image-heavy websites.”CNet

For a in-depth reading on more about Guetzli’s functionalities, you can refer to this post.

So, Which Image Compressor to Pick?

There are two types of image compression namely, lossy and lossless which can be further used to describe whether a definite amount of data would be retrieved or not in the compression of a file. Lossy compression talks about deleting certain data which is available in the file, whereas lossless compression involves no such elimination.

On account of electing any one of the image compressor tools, you can adopt two ways, either by segregating options which one can avail from each tool or by drawing the comparison between the size and quality of compressed images obtained from each one. As per the quality of compressed images, all tools are rewarding.

While pondering over the issue of image compression. It seems obvious to address the importance of themes which are employed to design a website. These web pages must contain modified and compressed codes in order to accelerate the website’s performance. TemplateToaster web design software harmonizes all these elements by providing themes that a user can design according to his/her preference. It generates themes whose code is optimized. Exercising such a technique is fruitful for the website in the long run. Its importance cannot be overlooked as page speed and the overall browsing experience are an important aspect to look forward to.