Users often find themselves in a position where they have several images they want to keep, but the space requirement for those is in Gb’s. So, you have no option other than deleting them to make some space on your HDD.
However, there are options to optimize these images to make them low in size. So, you can use them with ease over the internet, and it will cost you around one-third of the disk space.
How to select the best services and applications for image compression
The internet has many image-compression tools, and there is an enormous number of tools available. But, only some of these applications are good.
The image compression means that some information in the original image is discarded during the compression process. Its effects will be visible if you zoom the image. So, it is best to choose an application that has these characteristics.
Choose the application which reduces the size to one-third of the image
The recommended size for a website by Google is less than 1Mb. So, all images, gifs, markup, and code should be below 1Mb. You have to choose an application that reduces your image size to at least one-third of its original size.
High-speed compression of images in less time
It is most likely that you have to compress versions of the same image and test them out on your website before finalizing them. So, time efficiency is a must thing.
Keep an eye on the other features an application provides
The users seldom use only the image compression feature. The features like exporting, resizing, and adding multiple images are the best ones in an application.
Top 10 best image compressors online to use in 2021
The Caesium image compressor is the best software to use for image compression on your pc. It is feature full and free and offers most features as a standalone tool. It gives users image compression up to ninety percent of the original size of the image.
The interface is simple, and a new user learns this application quickly. The program is compatible with many formats PNG, JPG, JPEG & BMP. It allows users to set the quality of the output images, and it also gives the option to choose the format for the output images.
For example, if you want the images to be compressed and converted. You can do that. It is not limited to that.
It also gives users an option to resize their images too. It means you can set the format and resolution in which you want them to be exported.
Other than that, the users also get an option to set the quality of the images. This option is only limited to JPG format, and it is unavailable in other formats.
The lowest quality gives the artifacts so, it is recommended to keep the level of quality to at least 20 percent.
After evaluating everything, it is a good choice to choose if you want to convert bulk images, resize them, and format them in a time-efficient way.
- A lot of functions
- Quality control
- Compatibility for different formats
- No quality setting option for formats other than JPG
- Size reduction performs poorly in formats other than JPG
- Command-Line application for Linux
Windows, macOS, Linux, and Android
Around 20-25 Mb
- Free, open-source
2. PNG Gauntlet
It is another application used for image compression. It has a simple interface and offers different, more technical image optimization options for images.
The users have complete control over how they want the compression. It will give a better result if you know how to optimize it. It utilizes different techniques to optimize images, such as OptiPNG, PNGOUT, and DeflOpt.
It gives you different options to set bit-depth, color-type, filter-type for compression. There are a lot more options for advanced users which they can fine-tune to get the best results.
The interface is simple, and new users can use it on the default options, and it will work great. It allows users to convert load to any format regardless of its inputted format.
It is only for Windows, which is a bit downside, but it should be the first choice of users looking for a GUI-based program with advanced options.
- Simple and fast
- Good for advanced users
- Offers various compression techniques for PNG
- Limited to PNG
- No option to set quality
- No resize functionality
900Kb download size
It is another image compression software that is free, and you can use it to compress your PNG files more efficiently without losing any original details of the image.
It also supports other lossless image formats like BMP, GIB, TGA, and it even compresses APNG, which is animated PNG and is much like the GIF files.
The program is available to users in two versions. One is for the users who would like to use a GUI version, while the other is for advanced users who prefer more control over the output of the software.
The effectiveness and compression strength of both versions is the same. But the GUI version offers a straightforward approach and has very few functions.
The flow of the program is simple. A user opens up the folder and drags the image in the window to optimize them.
It is super-light in terms of weight at 158kB, and it is the best choice to work with if you are on limited bandwidth.
Sadly, the software doesn’t have a version for macOS. Instead, it is only available for Windows and Linux operating systems.
- Super easy to use
- Low size and high image compression
- No version for macOS
- Fewer controls
- No image tools like resizing and conversion
117kB – 158kB
It is an image compression software for macOS. It is an application for compressing images on mac with ease. Since there are not many applications available, the ImageOptim is a recommended application for your mac. It requires at least 10.9+ versions of macOS to work.
It offers users drag and drop workflow, which they can learn with ease. It is compatible with all of the popular image formats.
It removes invisible tags and information from the photos, such as EXIF metadata, embedded thumbnails, GPS position, comments, and unwanted color profiles.
Plus, its lossy minification feature lets you create good thumbnails from the images by discarding some of the minor details that are un-noticeable.
After getting ImageOptim on your macOS, you don’t need different tools because it combines some of the best image compression tools that offer the best techniques under one hood. The tools combined are MozJPEG, pngquant, Pngcrush, Google, Zopfli, SVGO, and 7zip.
It may take some time while compressing PNG files. It is due to the reason that it is using PNGOUT and Zopfli compression to compress PNG files, and it makes it take longer to process them. If you encounter this problem, then turn them off from the settings.
It should make the compression process fast, but the result will be marginally bad with both tools turned on.
- Best image compression tool for macOS
- Combines different techniques and tools
- It is free and open-source
- No application for Windows
- Fewer functions
macOS, Linux, (Online version works on all platforms including Windows)
It is a small command-line tool for advanced users who want to use image compression via batch programs. These users can make their batch programs and configure the program according to their needs.
The programs could be learned with the little help dialogue appearing on the first startup. After that, if you want to access more options, you can type optipng -h to get more help options.
It offers seven compression levels. The default setting has an optimization level two set. Apart from that, it gives detailed optimization options by which an advanced user can set the process according to his requirements. It supports different types of file formats PNG, BMP, GIF, PNM, and TIFF.
It offers minor editing options with the normal compression process as well. Its -snip function lets you cut out the image from the source image, and the -strip function gives you the ability to remove any useless metadata from the image while compressing it.
It is very technical. So, we don’t recommend it to new users. It has a very steep learning curve. But if you want to build a web app or a desktop application, or a batch program, then it is a good program to integrate with your application.
- Highly customizable
- Can make multiple batch programs based on it
- Resource demanding
- Steep learning curve
It is a free web app that everyone can use for image compression with ease. It is an online tool, and you can use it on any platform.
The interface of this compression tool is simple and user-friendly. The users have to drag and drop the image on the page, and they will automatically fetch the location of the image on your disk drive. After that, the images will be uploaded, and with one click, they will be converted.
You can download these converted images with ease by clicking the link next to them. A simple indicator will also show you the size decreased from the compression process.
Normally, this image compression tool lets you compress twenty images at once with each having a max size of 5 Mb. If you want to compress a batch of images, then you have to go pro.
The TinyPNG Web Pro version will give you some advantages over the free one. It removes the limit of 20 images per compression and gives you the max size limit per photo of 75Mb.
If you are a webmaster, then there is good news for you too. It is because they have extensions for WordPress and Magento content management systems that you can use to optimize the images uploaded to your site without visiting TinyPNG.
- Web-based tool
- Extensions for popular CMS
- High compression of PNG and JPEG
- Paid tool (Free version limited to 20 images with 25Mb size limit)
- Only PNG and JPEG is supported
- Lossy compression
No Installation package except extensions
- 25$ per user license per year
It is an online image compression tool with functionality equivalent to desktop applications. But, some of its functions are locked until you subscribe to their pro plan.
With Compressor, you can choose between your compression type and set it according to your demands. It allows you to select between Lossy, Lossless, and custom compression techniques. You can get better results by using these techniques.
In the Lossy technique, some details of the images get discarded, while in Lossless compression, the details aren’t discarded.
It is a bit expensive, but it offers some cool desktop-grade features like image resizing, bulk renaming, and image quality controls. These are premium features and are only available to the user after subscribing.
The compatible formats you can compress with this tool are PNG, JPEG, GIF, SVG, and WebP formats. The image compression process is customized to give you the best images to boost your search engine optimization scores.
It is indeed a desktop equivalent web-based software if you don’t mind paying a little more for a premium product.
- Desktop equivalent online tool
- Platform independent
- Customizable and featureful
- No extensions for popular CMS
- Free version file size limit only 10Mb
No installation is required
- Premium $50 per year
It is an image compression tool aimed at enterprise customers. Perfect for those who have to compress a lot of images automatically. It has flexible plans for customers managing different websites based on bandwidth. The offers start at a very fair price.
The Kraken offers you to use their API to embed in your applications. For quick processing of the images, they also provide users with cloud storage.
To offer more convenience, they also provide various other things, such as using the CDN of your choice and processing the uploaded images while you are away.
It is because everything is done on the server-side. So, the image compression continues even when the browser is closed. You can compress as many images as needed. And you don’t have to upload them individually.
Just make a Zip file with all the images inside in the desired folder structure. It will compress all of the photos. It will discover inside a zip file.
- Different packages
- Batch Background processing
- Little difficult to use for a new user
Web-based, plugins for WordPress and Magento
No Installation package except extensions
- Free Limited to 1Mb size per Image
- Micro $5/month 500Mb of Images; $5 per additional GB
- Basic $9/month 2Gb of Images; $4 per additional GB
- Advance $19/month 5Gb of Images; $3 per additional GB
- Premium $39/month 15Gb of Images; $2 per additional GB
- Enterprise $79/month 60Gb of Images; $1 per additional GB
It is another online free tool that lets you do lossy and lossless optimization of images for free.
The compressed images will be available on the website for an hour before they are deleted. It is a free service. So, they can’t save your images for long. It offers resizing tools and quality adjustment, and compatibility with various popular formats.
You can compress a max of 25 images per process with each maximum of 50Mb, which is higher than most free web-based tools considering it is free software.
The website is ad-free, and there are no fees for a premium version. It is a considerable choice if you are finding for a free tool without any annoying advertisements.
As it is free, it is not recommended to use it for compressing personal photos since the usage of uploaded photos is not defined properly.
- No Ads
- High size limit 50Mb per image
- No batch functionality
- API not available
- Unclear policy on the usage of Photos
No installation required
- Free/No Ads
It is a simple web-based image compressor for compressing JPEG and PNG images for usage across the internet. It allows users to upload and process 20 images at once with no size limit.
It offers some unique features too. To achieve better image compression the users, get also the option to remove un-used color information from the images.
It is a highly recommended feature if you are compressing the design assets for your website. If the images have two or three colors, you can simply reduce the other colors in the assets.
It is free software with no ads. So, image compression of your family photos is not recommended while you are free to use it to compress design assets and web-page assets.
- Color adjuster
- No size limit
- Free/no ads
- Fewer functions
- No policy available on the usage of images
- Only PNG and JPEG are supported
No installation required
- Free/no ads
There are a ton of image compression tools in the market. But, only a few of them are worth using for image compression. If you are looking to do image compression on the PC/Mac, then the Caesium image compressor is the best one to use.
If you are a casual user looking for a web-based tool, then TinyPNG is your go-to tool. If you are an enterprise user looking for the best web-based paid tool, then Kraken is the best one to choose.
In the end, these are just recommendations. All of the image compressing tools discussed in the article work great, and it is recommended to choose a tool that works great for you and doesn’t cost that much.