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How to Compress an Image in Paint

By Janet | June 30, 2026

If you need a smaller file for email, upload forms, websites, or chat, learning how to compress an image in paint can help you reduce image size quickly. Microsoft Paint is simple, free, and already available on many Windows devices. This guide shows how to use Paint, when to use an online compressor, and how to keep your image clear.

how to compress an image in paint image compress

Why Compress an Image in Paint?

Large images can be hard to upload or share. A photo from a phone or camera may be several megabytes, even if you only need it for a form, profile, email, or document. Paint gives you a quick way to resize and save a lighter version.

Knowing how to compress image in Paint is useful because it does not require advanced design software. You can open an image, change its dimensions, and save it in a more practical format. This works well for everyday tasks where speed matters more than complex editing.

However, Paint is not a full image optimization tool. It mainly helps by resizing, cropping, and saving in a different format. For stronger compression and target file sizes, an online tool like Lynote can give you more control.

Easier Uploads

Many websites limit image file size. If your image is too large, the upload may fail or take too long. Compressing the image first makes the process smoother.

This is helpful for job applications, school portals, government forms, ecommerce uploads, and support tickets. A smaller file usually uploads faster and is easier for the system to process. That is one reason people search how to compress image size in Paint.

Faster Sharing

Large files can slow down email, messaging apps, and cloud uploads. Even if the file eventually sends, it may waste time. A compressed image is easier to share.

When you learn how to compress image using Paint, you can prepare a smaller version before sending. This is useful when sharing screenshots, receipts, profile photos, or product images. It keeps the file practical for everyday communication.

Less Storage Use

High-resolution images can take up a lot of space. If you save many images on your computer, storage can fill up quickly. Smaller images are easier to organize and archive.

Paint can help create lighter copies of images you do not need in full resolution. Keep the original when quality matters, then save a compressed copy for sharing. This gives you flexibility without losing your source file.

What Does Compressing an Image in Paint Mean?

Paint does not have a dedicated “compress” button in the same way some optimization tools do. Instead, it reduces file size mainly through resizing, cropping, and saving in a different format. These actions lower the amount of image data stored in the file.

For example, reducing an image from 4000 pixels wide to 1200 pixels wide can make the file much smaller. Cropping away unnecessary background can also reduce dimensions. Saving as JPEG may reduce file size more than saving as PNG for photos.

So when people ask how to compress image size using Paint, they usually mean reducing the image dimensions or changing the save format. This can work well for basic needs. For precise compression targets, Paint may need help from a dedicated image compressor.

3 Simple Ways to Compress an Image in Paint

There are several practical ways to reduce image size. You can resize the image in Paint, crop unnecessary parts, or use Paint together with an online compressor. Each method helps in a different way.

If you only need a quick smaller copy, Paint may be enough. If you need a specific file size, such as under 100KB or 500KB, use Lynote after editing. This gives you better control over the final result.

Below are three easy methods. Start with Paint for simple changes, then use Lynote when you need stronger compression or batch processing.

Method 1: Resize the Image in Paint

The most common way to compress an image in Paint is to resize it. Open the image in Paint, then choose the resize option from the toolbar. You can resize by percentage or by pixels.

For better control, choose pixels. Make sure “maintain aspect ratio” is enabled so the image does not stretch. Then reduce the width or height to match your real use case.

For example, if the image is 4000 pixels wide, try 1600 pixels or 1200 pixels wide for web or email use. This can reduce file size significantly. It is one of the easiest answers to how to compress image in Paint.

After resizing, save the image as a new file. Do not overwrite the original unless you are sure you no longer need it. A new copy lets you compare quality and file size safely.

Method 2: Crop Unnecessary Areas in Paint

Cropping is another simple way to reduce image size. If your image has empty space, extra background, or irrelevant edges, remove them. This makes the image more focused and often smaller.

Open the image in Paint and use the select tool. Highlight the area you want to keep, then choose crop. The canvas will shrink to the selected area.

This method works well for screenshots, receipts, documents, and product photos. It removes visual clutter and reduces dimensions at the same time. If you want to know how to compress image using Paint without changing the main subject, cropping is a good option.

After cropping, save a new copy. Check that important details are still visible. If the image contains text, make sure it remains readable after the crop.

Method 3: Use Lynote After Editing in Paint

Paint is useful for basic resizing, but it does not offer detailed compression controls. If you need a smaller file with better control, use Lynote Image Compressor after editing in Paint. This creates a simple two-step workflow.

First, resize or crop the image in Paint. Then upload the edited image to Lynote. Choose a suitable compression level or target file size.

This is especially helpful when a website requires a strict upload limit. Paint can reduce dimensions, while Lynote can reduce the file size further. Together, they make it easier to handle how to compress image size using Paint and still get a clean final image.

After compression, preview the result before downloading. Check faces, text, product details, or document numbers. If everything looks clear, download the optimized image and use it wherever needed.

Best Format to Save Images from Paint

The file format you choose can affect size and quality. JPEG is usually best for photos because it creates smaller files. It works well for images with many colors, gradients, and natural details.

PNG is better for screenshots, graphics, logos, and images with sharp text. However, PNG files can be larger, especially for photos. If a PNG is too large, try resizing first or compress it with Lynote.

BMP should usually be avoided for sharing because it creates very large files. It may preserve detail, but it is not efficient for web, email, or upload forms. If your goal is how to compress image size in Paint, JPEG is often the practical choice for photos.

How Much Should You Resize an Image?

The right size depends on where the image will be used. A profile photo may only need 500 to 1000 pixels wide. A website image may need 1200 to 1600 pixels wide.

If you are sending an image by email, a smaller version is usually enough. For documents or forms, keep the image clear but not oversized. For printing, keep a higher-resolution copy.

Avoid resizing too aggressively. If the image becomes blurry or text becomes unreadable, increase the dimensions. Good compression should reduce file size while keeping the image useful.

How to Compress Image Size in Paint Without Losing Clarity

Start by reducing dimensions gradually. A huge photo can often be made much smaller without visible quality loss. But cutting the size too far can make details look soft.

Use Paint to resize the image based on actual use. Then open the saved copy and view it at normal size. If it looks clear, the resize is probably fine.

For better results, combine Paint with Lynote. Paint handles simple edits, while Lynote handles stronger file-size reduction. This is a practical workflow for how to compress image size in Paint without making the image look poor.

Common Mistakes to Avoid

The first mistake is overwriting the original file. Once you save over the original, it may be difficult to recover full quality. Always save a compressed copy with a new file name.

The second mistake is using the wrong format. Saving a photo as PNG may create a larger file than expected. Saving a text-heavy screenshot as low-quality JPEG may make the text blurry.

The third mistake is reducing dimensions too much. A tiny file is not useful if the image is unreadable. Balance file size with the purpose of the image.

When Should You Use an Online Compressor Instead?

Use an online compressor when Paint is not enough. If you need the image under a specific size, Paint may require trial and error. Lynote can make that workflow faster.

Online compression is also better when you have multiple images. Instead of opening each image in Paint, you can upload and process them more efficiently. This is useful for blog images, ecommerce photos, reports, and email attachments.

You can still use Paint first for cropping or resizing. Then use Lynote for final optimization. This gives you a flexible workflow that works for both simple and stricter file-size needs.

FAQ

How do I compress image in Paint?

You can compress image in Paint by opening the file, using Resize, reducing the pixel dimensions, and saving a new copy. For photos, saving as JPEG often creates a smaller file. If you need stronger compression, use Lynote after resizing.

How do I compress image size in Paint?

To compress image size in Paint, reduce the width and height of the image or crop unnecessary areas. This lowers the amount of image data in the file. Save the result as a new image and check the file size.

How do I compress image using Paint for email?

To compress image using Paint for email, resize the image to a smaller width, such as 1200 or 1600 pixels. Save it as JPEG if it is a photo. Then attach the smaller copy to your email.

How do I compress image size using Paint under 100KB?

Paint alone may not reliably hit a strict size like 100KB. Resize the image in Paint first, then upload it to Lynote and set a smaller target size. Preview the result before downloading to make sure it still looks clear.

Conclusion

Learning how to compress an image in paint is useful for quick resizing, cropping, and basic file-size reduction. Paint works well for simple edits, while Lynote helps when you need stronger compression or a target file size. Use both together to create smaller images that are still clear and easy to share.