Image MB to KB Converter

Convert Image from MB to KB Online

Need to reduce a large photo from MB to KB? Use this free Image MB to KB Converter to compress large JPG, JPEG and PNG images into a smaller file size. Upload your image, choose a target size in KB, and download the compressed photo.

Whether you need to reduce a 1MB image to 100KB, shrink a 2MB photo, or make a large image smaller for an online form, you can choose a custom file-size target. The tool helps you reduce the actual image file size instead of simply changing the file name or extension.

How to Convert MB to KB for an Image

1. Upload your photo — Click Upload Image or drag your (often multi-MB) file into the box above.
2. Switch to Compress to Size — Enter your target in KB, or change the unit to MB for a larger target.
3. Compress the image — The tool searches for the highest quality that still fits under your target.
4. Download the result — Check the before/after file size, then click Go to Download.

Why Reduce Image File Size?

Reducing image size can help when you need to:

• Upload a photo to a website with a strict file-size limit.
• Prepare an image for an online application or recruitment form.
• Make photo attachments smaller for email.
• Reduce the size of images used on websites and blogs.
• Save storage space by keeping smaller image files.

Image to KB Converter

ToolsGuru lets you reduce the actual image file size rather than simply changing the file name or extension.

You can use the target-size option to reduce the size of large images to a specific KB limit while keeping the best possible quality. This makes it easy to prepare photos for online applications, forms, document uploads, and other websites that require files to be within certain size limits.

Convert 1MB, 2MB or 5MB Images to KB

You can use the target-size option to reduce images of different starting sizes.

• 1MB to 100KB - Useful when an image needs to fit within a 100KB upload limit.
• 2MB to 200KB - Try this target when a website accepts images up to 200KB.
• 5MB to 500KB - Reduce a large image for a smaller upload, provided the resulting quality is acceptable.
• Large image to a custom KB size - Enter the exact target required by your website or application.

Supported Image Formats

Upload JPG, JPEG or PNG (most other common image formats will also open). The result is delivered as an optimized JPEG, which compresses photographic images far more efficiently than PNG — if you specifically need to keep a PNG's transparency, use Convert Image instead.

Common Photo Size Targets

Not sure what KB target you need? Here's what each common size is typically used for:

Image MB to KB Converter FAQ