Compress an Image to 100KB

A sensible target for everyday uploads

A 100KB image is a practical target for many online forms, compact product thumbnails, profile photos, and email assets. It is large enough to retain useful detail in a modestly sized photograph, but small enough to transfer quickly on mobile connections. The result depends more on the original dimensions and format than on a single quality setting. A well-framed 800-pixel photograph can often look better at 100KB than a 4000-pixel original pushed through harsh compression.

Make the file smaller in the right order

First match the image dimensions to the destination. Next choose JPEG or WebP for photographs and consider JPG for compatibility with older upload systems. Keep PNG only when transparency or crisp flat artwork is essential. Then lower quality gradually and inspect the result, especially faces, small text, gradients, and product edges. The tool removes unnecessary metadata, but metadata alone will not turn a multi-megabyte camera photo into a clear 100KB file. Resizing is usually the decisive step.

Before you submit

Read the destination site’s rules closely: “under 100KB” may sit beside required width, height, aspect ratio, file extension, or colour-background instructions. Download the finished image and check its size in your device’s file information before uploading. Avoid editing a compressed image repeatedly, because each JPEG save can add artifacts. Keep an original copy and create a fresh compressed version if you need a different target later.

How to use this tool

1. Upload an original JPG, PNG, or WebP file.
2. Choose dimensions and format that meet your destination’s rules.
3. Compress, inspect the result, and download a copy.

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Frequently asked questions