How to Compress JPEG Files Easily in 8 Methods [Online & Offline]


Whether you're a beginner photographer or an experienced graphic designer, effectively compressing JPEG files is a common challenge. This detailed guide introduces a two-pronged strategy, examining both offline and online methods to efficiently compress JPEG files. Whether you prefer using built-in applications on Windows 10 and Mac or utilizing online tools, we provide a step-by-step process to optimize your JPEG files without sacrificing visual quality.

compress jpeg


Part 1. How to Compress a JPEG [Offline]

This part introduces 4 simple methods about how to make a JPG file size smaller. Read to learn about them:

Method 1. How to Reduce JPEG File Size on Windows 10 Using Photos App

For Windows 10 users, the built-in Photos application can be used to compress individual JPEG images. However, this method is not suitable for users with a large number of images to compress, as each image requires manual size adjustment.

This is how to reduce file size of JPG using Photos application on Windows:

1. Open the JPG image you want to compress on your Windows 10 computer, and right-click on it.

jpeg compression on windows

2. Select the "Resize image" option from the right-click menu. In the pop-up window, you can use the slider to adjust your image to the desired size. You can also maintain the aspect ratio by changing the width and height proportionally.

reduce jpg size

Method 2. How to Reduce the Size of a JPEG on Mac

For Mac users, it's also as easy as a pie to reduce JPG file size using built-in tools or third-party applications. Here's a simple guide on how to do it using the Preview app, which is a default application on macOS:

1. Open the JPEG image you want to resize using the Preview app: simply right-click on the image file and select "Open With" > "Preview".

2. Click on the "Tools" menu in the top menu bar and select "Adjust Size". This will open a new window with options to modify the image dimensions.

compress jpeg file on mac

3. Adjust the dimensions of the image. Make sure the "Resample image" option is selected to maintain the image quality as you resize.

4. After adjusting the dimensions, click the "OK" button. You can then save the changes by clicking on "File" in the top menu and selecting "Export" or "Save As". Choose a location to save the resized image and select the JPEG format.

Method 3. How to Shrink JPEG File Size Using Adobe Photoshop CC

Adobe Photoshop CC is a powerful and widely used graphics editing software developed by Adobe Inc. It is known for its extensive features and capabilities, making it a go-to tool for graphic designers, photographers, web developers, and various other professionals in the creative industry. You can easily make JPEG file size smaller using Photoshop.

Here are the steps:

1. Open the JPG image you want to compress in Adobe Photoshop CC and choose "File" > "Export" > "Export As" options from the menu on the top.

compress jpeg file with ps

2. In the "Export As" window, choose "JPG" in the format option and freely choose the size you prefer. You can preview the compressed result in the window.

export as

3. Lastly, click the "Export All..." button to save your compressed image to your preferred directory.

Method 4. How to Reduce JPEG File Size Using Paint Tool SAI

Paint Tool SAI is a digital painting software designed for artists and illustrators, developed by Systemax Software. There is also an upgraded version of the original Paint Tool SAI. Like Photoshop, you can also compress JPEG files using this tool.

This is how to achieve it:

1. Open the JPG image you want to compress in the tool and choose "File" > "Export as" > ".jpg (JPEG)" options from the menu on the top.

how to reduce size of jpg with sai

2. Choose a location to save your JPG compressed and customize the compression settings according to your preference in the "JPEG Saver" window.

how to reduce file size of jpg

3. Lastly, click "OK" to save your photo.

Also read:

Optimize Your Images: How to Make Picture File Size Smaller

The Art of Image Compression: How to Compressing Images to 200 KB

Part 2. How to Reduce the File Size of a JPEG [Online]

There are also many JPEG file size reducers available online. You can use most of them for free without downloading any tools. The only thing to be aware of is that some online JPG size reducers may include advertisements.

Tool 1. How to Make JPEG File Size Smaller at compressjpeg.com

Compressjpeg.com is a free online JPEG compressor. On this website, you can compress JPG files in bulk. To use this website for compressing your JPEG images, simply drag and drop your pictures into the window on compressjpeg.com. The JPG compressor will automatically compress them. Afterward, just click "DOWNLOAD ALL" to download your files.

Note: You can only upload a maximum of 20 images at once.

how to make a jpg file size smaller online

Tool 2. How to Compress JPG Files at jpeg-optimizer.com

The JPEG Optimizer tool on jpeg-optimizer.com is another effective JPG file compressor. Like the previous tool, you can upload a maximum of 20 images at a time. What sets this website apart is that you can customize the "Max size" (such as 500KB, 200KB, 100KB, 50KB or less) and "Max width or height" for your images. Additionally, you have the option to output your images as JPEG, PNG, or GIF. The process is similar to the previous website - just upload your images, configure the compression parameters, and click "COMPRESS".

compress jpg at jpeg-optimizer.com

Tool 3. How to Reduce JPG File Size at www.freeconvert.com

You can also utilize the "Compress JPEG" tool on www.freeconvert.com for free JPG compression. Unlike the two tools mentioned above, on this website, you have the flexibility not only to customize compressing files to a specific size but also to choose from other "Compression methods" such as "By Image Quality", "Enter File Size Percentage", or "Compress Losslessly". In addition to these, there are other parameters available for more detailed adjustments. The process is similarly straightforward: simply upload your images, adjust the compression parameters, and click "Compress JPEG".

compress jpg at www.freeconvert.com

Tool 4. How to Reduce Size of JPG at www.xconvert.com

The "Compress JPEG" tool on www.xconvert.com is also a convenient and straightforward online tool for compressing JPEG images. Similar to the previous tool, you can customize how you want to compress your images, whether it's by adjusting the image size percentage or defining an exact compression size. It's easy to achieve on this website. To reduce JPEG sizes using this site, simply click "Add Files" to upload your images and then click "Compress".

compress jpg at www.xconvert.com

Last Words

As we wrap up our discussion on compressing JPEG files, it's clear that the digital landscape provides numerous solutions to meet various user requirements. Whether choosing offline methods on well-known platforms such as Windows 10 or Mac, or exploring online options with dedicated tools, the objective remains the same - achieving a balanced compromise between file size and image quality. With the insights gained from this guide, users can confidently manage the complexities of JPEG compression, ensuring their digital assets are not only stored efficiently but also easily shared across different platforms.

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