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Reduce Image Size in KB

Type the exact number of kilobytes you need and get a file that fits - any image, any target.

Any Number of Kilobytes You Need

Upload forms rarely agree on a limit. One asks for 40 KB, the next for 120 KB, a third gives you a range. Rather than guessing at a quality percentage and checking the file size afterwards, type the number the form actually gave you and let the compressor find the setting that fits. It works by re-encoding at several quality levels and keeping the best result that stays under your target, then falls back to scaling the image down only if nothing else will fit - and tells you when it has done so.

How to Compress an Image

1

Upload your image

Pick a JPG, PNG, WebP, or GIF file from your device. It stays on your computer - nothing is sent to a server.

2

Set a target size or quality

Type the exact KB size a form or upload limit requires, tap one of the presets, or switch to the quality slider for manual control.

3

Download the compressed file

Check the before and after sizes, then save the smaller image in JPG, PNG, or WebP.

Everyday KB Targets

  • Government and exam portals with unusual limits like 40 or 120 KB
  • Signature and photo fields with separate size caps
  • Content systems that reject anything over a set kilobyte figure
  • Email systems with tight per-attachment limits
  • Trimming images to speed up a slow-loading page
  • Matching a size limit written in a submission guideline

Reducing to an Exact KB Size

What is the smallest size I can target?

You can type any number from 1 KB upwards. Very small targets on detailed photos will force a resize, which the tool reports so you are never surprised by the result.

Does it measure KB the same way my computer does?

Yes - 1 KB is 1024 bytes, the same convention your operating system and most upload validators use.

Which format should I choose?

JPG and WebP can hit small targets; PNG usually cannot because it is lossless. Leave the format on Keep unless the destination requires something specific.

Can I see the size before downloading?

Yes. The original size, the compressed size and the percentage saved are all shown above the preview, before you save anything.