Exact KB Reducer
Reduce Image to Exact File Size
Reduce an image to a specific KB limit online. Choose 20 KB, 50 KB, 100 KB or a custom maximum and download a result at or below the target size.
Target-size image workflow- 1Choose
- 2Set target
- 3Reduce
- 4Download
Processing complete
Your target-size images are ready
Quick feedback
Did this tool work well for you?Only this tool rating and a local timestamp are stored in your browser. No file data is included.Private browser workspace
How it works
- 1
Choose an image
- 2
Set your maximum KB and dimension preference
- 3
Download a result within the limit
A useful thing to know
Will the output be exactly that many bytes?
The tool aims for the best quality at or below your limit, not an artificially padded file. Here 1 KB is 1,000 bytes. If fixed dimensions cannot fit, you get a clear message instead of an oversized result.
How we handle your dataExact KB Reducer guide
Meet strict upload limits more reliably
Many application portals reject an image even when it looks small on screen because they check the actual file size in kilobytes. Exact KB Reducer is designed for those situations. Instead of choosing only a visual quality level, you enter a maximum file-size target and FileVoxa adjusts the image to try to fit under that limit.
The achievable result depends on the image. A detailed photograph needs more data than a simple signature or plain-background portrait. Very low targets may require stronger compression or reduced dimensions, which can make fine text, hair, edges or facial detail softer.
Use the portal’s stated limit as the target, then inspect the downloaded image before submission. If the instructions give a range, staying comfortably inside that range while preserving clarity is usually more useful than forcing the smallest possible file.
Practical checklist
A better target-size workflow
- Enter the real maximum given by the destination portal.
- Check the output size after processing.
- Zoom in on signatures, text and facial details.
- Keep the original so you can create a different version for another portal.
Common questions
Why can quality change? Smaller files require less image data. Can the result be exactly the number entered? The goal is to fit under the maximum; encoding works in steps, so exact byte-for-byte matching is not always meaningful. Processing stays in your browser.