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KaiConvert
Local

Compress an image without guessing

Move the quality slider, watch the file size change, and download when the trade-off looks right.

Drop an image here

or click to browse

Accepted: JPG, PNG, WEBP, AVIF, BMP

Try one of these

Processed locally. Your image never leaves your device.

Keep going without re-uploading

Your image stays loaded in the editor. Pick the next action and carry on.

Most compressors give you a single button and a promise. That is fine until the result is either still too big or visibly mushy, and you have no way to steer it. Compression is a trade-off, and the only sensible interface is one that shows you both sides of it.

KaiConvert re-encodes your image at the quality you choose and reports the exact resulting size, the original size and the percentage saved. Switching format matters too: the same photo as WebP is often 25–35% smaller than as JPEG at a visually identical quality.

What you get

  • Real numbers, not promises

    The size shown is measured from the actual encoded blob, so what you see is what you download.

  • Format matters as much as quality

    Compare JPEG and WebP at the same quality. WebP usually wins on size; JPEG wins on universal compatibility.

  • Resize first for the biggest win

    A 6000px photo displayed at 1200px is wasting 96% of its pixels. Resizing before compressing beats any quality slider.

  • Metadata goes with it

    Re-encoding drops EXIF, GPS and camera data, so the output is smaller and quieter about where it came from.

How it works

  1. 1

    Load your image

    The original file size is recorded so the comparison is against the real thing, not an estimate.

  2. 2

    Pick a format and quality

    JPEG or WebP for photos, PNG when you need lossless or transparency. The slider runs from 1 to 100.

  3. 3

    Check the saving

    The panel shows original size, new size and percent saved. Adjust until you are happy.

  4. 4

    Download

    The encoded blob is handed straight to your browser. It was never sent anywhere to be compressed.

Why use KaiConvert

  • No upload for local tools
  • Works offline once the page is loaded
  • Cloud AI is always clearly labelled before you start

Frequently asked questions

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