300KBCompress image to 300KB
Quick answer
300KB leaves real headroom, ideal for content-rich photos and large web images — keeping a finer picture while staying easy to upload.
3 numbered images + 1 damaged file. A real processing example.
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300KB suits images that carry a lot of detail you don't want to lose: landscapes, group shots and dense web heroes. Drop an image in and image cat compresses it toward 300KB locally — never uploaded. This preset uses 300 KiB (307,200 bytes). If the destination uses decimal KB/MB, check its byte cap and use a lower custom target.
When to choose 300KB
When 100–200KB compresses a photo too hard and detail visibly drops, loosening the target to 300KB often fixes it instantly. Colour gradients, texture and small distant objects survive better, while the size still suits the web and most uploads.
300KB and page load
300KB is still lightweight for a modern web page, and pairs with WebP for fast loading. For a large in-article image, 300KB is a good balance between quality and speed.
Frequently asked questions
For the web and most uploads, 300KB is still lightweight and loads fast. Its advantage is keeping more detail than 100–200KB, which suits content-rich photos.
Yes. Drop several in at once and image cat compresses each toward 300KB, with a single ZIP download.
No. Compression runs entirely in your browser; files are never uploaded.
Updated · image cat team