[Four FREE Solutions] How to Compress a JPEG on Windows/Mac/iPhone

Many users do not want to put their personal image files into online tools because of security issues or limitations. Here we recommend the WorkinTool image converter. It is an all-in-one image editor. It supports over 100 image formats for image compression and provides custom options. Download it now and try it for yourself.
😍 1. Up to FREE 5 image batch conversions and compression try-out.
🤩 3. Easy interface for users to edit with THREE STEPS.
😎 4. Support more than 100 different image formats to operate.
🥳 5. Cover all the features that you can on the market and interesting filters.
😊 6. Available for image conversion, compression, matting, watermark, and more.

Last updated on Feb 28, 2023 by Sebastian Written by Sebastian
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[Four FREE Solutions] How to Compress a JPEG on Windows/Mac/iPhone


Whether it’s a photo you took with your phone’s camera or a picture you downloaded from the Internet, sometimes they just don’t fit your needs because of their size. For example, official courts and local schools in each state and county have different requirements for the size and format of documents they accept. If you upload a JPEG image that exceeds its size requirement, the upload will fail. Or your personal, commercial website has too many digital images that take users too long to load. It will also adversely affect your business. So learning how to compress a JPEG is a must-go.

By compressing JPEG images, users can reduce the memory consumption of the images while keeping the image quality as much as possible, thus making it easier to transfer and store the pictures. In this tutorial, we will share some valuable and practical methods on how to compress a JPEG with four free compression methods on different platforms and systems.

How to Compress a JPEG on Windows Desktop

The problem of reducing image size on Windows is both simple and challenging. If you only want to reduce the size, you can use the Paint app to cut unnecessary parts of the image (through the cropping feature) to reach the goal. However, it will destroy the whole picture. And we are discussing the method to compress a JPEG without altering its quality. Unfortunately, there is no built-in tool that can help you do it. Where can you find a means to get the best compression? Well, here is your answer.

workintool image converter

image converter download

Considering all the factors, WorkinTool Image Converter should be a great helping hand. It is a professional image editing solution. This tool contains all the photo editing features users need. It includes things like image format conversion, compression, editing, applying or removing watermarks, text, filters, stickers, etc. And for the image compression feature offers options allowing users to customize how they would like to compress images. More importantly, the compression feature also supports batch compression. That means you don’t have to repeat the same operation over and over. And you don’t have to worry about image formatting because it supports more than 100 formats to operate. As the most common format, JPEG is undoubtedly included. This tool makes it easy to do all the editing work. Each feature has a simple instruction. Even beginners in image editing can get the job done effectively.


Compression Mode: Customize, Shrink First, Equilibrium Compression, Clarity First.

Custom Option: Clarity, Size, Resolution, Target Size.

Output Format: Original Format, JPG.

💳 Price

Free-trial Plan: Up to five image conversions and compression in bulk with watermarks.

Premium Plan: $10.95/month, $29.95/annual, $39.95/lifetime.


🤩 Pros:

  • Cheap compared with other image editor tools
  • Fast format conversion
  • Batch conversion available
  • Image detail adjustments
  • Various photo editing features
  • No ads or pop-ups

🤔 Cons:

  • Temporary only Windows
  • Weak toolbar distribution



How to Compress a JPEG on Windows:

1. Open WorkinTool Image Converter and click the option to Compress Images.

2. Select the JPEG picture(s) you want to compress and add them to the window.

how to make gifs smaller

3. Adjust the settings to customize your JPEG compression, including image size ratio, clarity ratio, resolution, and target size.

workintool compress a jpeg

4. After making those adjustments, you can click “Start” to compress immediately and wait for the result.

workintool compress a jpeg 2

As you can see from the comparison image, the compressed JPEG increasingly shrinks five times in size after using this tool to compress. Users can compress up to five shots in a batch. You can upgrade to premium pro for unlimited features and services if you want more.

workintool compress a jpeg 3

💖 Additional WorkinTool Image features 💖

Convert Image to PDF Blur the Background of a Picture How to Convert JPG to WebP
Make a Blurry Picture Clear Make a Photo in Black and White Convert TIFF to JPG
Crop a Screenshot on Windows and Mac Aging Filter to Make You Look Young Again Convert HEIC to JPG


How to Compress a JPEG on Mac

preview mac

Unfortunately, while the Image compression is very effective, WorkinTool Image Converter is currently not available for Mac. But you don’t have to be upset. There is one built-in app that can also help users to compress standard images on Mac. And that is the Preview app.

The Preview app is a built-in tool for every Mac user. It not only previews PDF files, but it also has a powerful image editor that allows you to do a lot of things. Today we will use the image compression feature to shrink the image to the appropriate size. This makes it easier for users to store them for the long term or share them with others.

The specific steps are as follows:

Step 1. Right-click on your JPEG pictures, and select Open With > Preview (default).

mac convert image to pdf

Step 2. Tap File selection to find Export in the drop-down menu.

mac convert image to pdf 2

Step 3. Move the quality slider to compress the image to the required size. Click Save to save the new compressed file.

mac compress jpeg


Shrink Image size on iPhone

If you want to reduce the size of your images on your iPhone, one of the easiest ways to do so is to save them in Apple’s proprietary HEIC format. This format conversion method is more suitable for users to store images. It can be a smaller file size to save high-quality photos. But the disadvantage is that the compatibility of the HEIC format could be better. Many systems do not support such a format.

  • Settings > Camera > Formats > High Efficiency.

heic format


How to Compress a JPEG through Email

There is also a way to compress images on iOS without downloading any software or converting them. That is to use the compression features included with the Mail app. After emailing those compressed images, download and save them back to your computers. It could be complex. Hey, it is free without downloading other apps. If you need it, try it.

email compress jpeg


  1. Open the Mail app and write a New Message.
  2. Find the option: Insert Photo or Video and select the photos you want to compress.
  3.  Tap the upper arrow icon to send them.
  4. Then you need to select different file sizes to use to send your photos.
  5. While you can open the email and download those compressed images back.


How to Compress a JPEG Online

If you want to be unrestricted by systems or devices that allow you to compress images whenever you want, there may be another way. Try the online image compression tool. For example, you can try the WorkinTool Online Image Compressor. This free online tool allows users to upload four of the most common image formats, including the most standard JPEG format, and then compress them with one click. It also supports batch compression. You can upload multiple images and squeeze them together.


How to Use the Online Tool:

1: At first, open your Website explorer and get on the WorkinTool online Image Compressor.

add gif online

2: Upload the JPEG picture(s). It also supports users in adjusting compression levels.

online jpeg compressor

3: Click Convert and wait for the result. Then you can save the compressed JPEG on your device.

online jpeg compressor 2


Suppose users need to convert images into batches. This tool can only work with four files at a time to correct. The maximum size of each uploaded file is 20 MB.


More to Share

After many tests that proved to be effective, we have written this compression JPEG method guide. Exactly four approaches correspond to four platforms and devices. So no matter which system device our readers are using, they can find the right way to compress the image size. You can shrink the JPEG file to any size you want by taking the most straightforward steps. For users on the Windows side, we strongly recommend that you try the WorkinTool image converter. After all, users can enjoy free compression.
Are you excited about compressing your JPEG files like you wanted?

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