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PDFImageTools

Compress an image to 300 KB

Aim at a hard 300 KB limit. The tool searches for the highest quality that still fits, and tells you the exact final size.

Your file is processed on your device and is never uploaded.

What this tool does

  • Automatically finds the best quality that fits 300 KB
  • Shows the original and final size side by side
  • Reduces dimensions too, if quality alone is not enough

How to use compress image to 300kb

  1. Add your image

    Drop in a JPG, PNG or WebP file.

  2. Let it find the setting

    The tool tries repeatedly until it lands at or under 300 KB.

  3. Check and download

    Compare against the original, then save.

Frequently asked questions

Why do I need an image under 300 KB?

300 KB is a frequent ceiling for document scans and for images attached to support tickets, generous enough to keep text in a scan readable.

Can any image be compressed to 300 KB?

Easily. At 300 KB a photograph keeps its dimensions and most of its quality, and a scanned page of text stays clearly legible.

What will the result actually look like at 300 KB?

A photograph keeps its dimensions and most of its quality. A scanned page of text stays clearly legible, which is usually the reason for this limit in the first place.

How does it hit the target?

It repeatedly re-encodes the image, adjusting quality by binary search until it finds the highest setting that still fits. If quality alone cannot get there, it progressively reduces the pixel dimensions as well. The whole search runs on your device, typically in under a second.

Which format gives the smallest file?

JPG for photographs and colour scans. For a scan of printed text, PNG can be both smaller and sharper — flat white backgrounds compress extremely well.