Compress Image to Exact Size

Compress an image to an exact file size such as 20 KB, 50 KB or 100 KB — the limit many application forms, exam portals and ID uploads require. The tool finds the best quality that fits under your limit, entirely in your browser.

Your files never leave your device.

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How to use the Compress Image to Exact Size

1Choose a photo, signature or document scan.
2Pick a preset (20, 30, 50, 100, 200 or 500 KB) or type your own limit.
3Click Compress — the result is guaranteed to be at or below the limit — and download it.

What is the Compress Image to Exact Size?

Government, university and job portals often reject uploads above a fixed size. This tool searches for the highest JPG quality that fits under your limit and, only if that is not enough, reduces the dimensions step by step.

Sizes use 1 KB = 1,024 bytes, the definition most upload forms use. The output is a JPG (or WebP if you choose it), and photo metadata is removed whenever the image is re-encoded. A JPG or WebP that is already under the limit is returned unchanged.

In-depth guide

How Compressing a Photo to an Exact KB Size Actually Works →

Frequently asked questions

Why is my 20 KB photo so small in pixels?

A 20 KB limit is very tight. When the lowest acceptable quality still does not fit, the tool reduces the width and height until it does. Crop to the face or document first to keep more detail.

Will the result be exactly 20 KB?

It will be at or just below the limit — never above — because forms reject files that are even one byte too large.

Is the Compress Image to Exact Size free and private?

Yes. The Compress Image to Exact Size is free, needs no account, and processes your files entirely in your browser. Files are never uploaded to a server or stored.

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