Rentrik

Reduce Image to Exact KB Online Free

Force any photo to exactly 20 KB, 50 KB, 100 KB, or any custom size for SSC, UPSC, Railway and college form portals. Processed entirely in your browser - nothing uploaded.

100% private. Your files never leave your device - all processing runs in your browser.

Drop your photo here, or tap to select

Supports JPG, PNG, WEBP - up to 25 MB

Browse file

How to use

  1. 1

    Upload your image

    Drop or select a JPG, PNG, or WEBP image.

  2. 2

    Select target KB

    Pick a preset (20 KB, 50 KB, 100 KB) or type a custom value. Most exam portals need 20–50 KB.

  3. 3

    Click Reduce to KB

    The tool runs a binary search over quality levels to hit exactly your target size.

  4. 4

    Download

    Download the result. The file will be at or under your target KB.

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Frequently asked questions

What KB size does SSC require for photos?
SSC CGL and SSC CHSL typically require the photo to be between 20 KB and 50 KB in JPEG format. Check your exam notification for exact limits.
What KB size does SSC require for signatures?
SSC typically requires signature files to be 10–20 KB in JPEG format.
What KB size does Railway (RRB) require?
RRB typically requires photo 20–50 KB and signature 10–40 KB. Always verify with the official notification.
Will reducing to a very small KB hurt quality?
Yes, very small targets (under 10 KB) will visibly reduce quality. Most portals accept 20–50 KB which gives good-enough quality.
Is my photo uploaded anywhere?
No. The entire process happens in your browser using Canvas. Nothing is ever sent to a server.
What if the tool can't reach my target?
It will return the smallest achievable size and show a warning. This can happen if the target is extremely small (under 5 KB). Try a slightly larger target.