Name: ImageSmith
Rating: 4.9 (1247 reviews)
Author: ImageSmith

Question 1

How do I compress a PNG image to 150KB?

Accepted Answer

Upload your PNG image to ImageSmith, switch to "Size" mode, set the target to 150KB, and click Compress. ImageSmith automatically finds the optimal quality setting to achieve 150KB.

Question 2

Can I compress PNG to exactly 150KB?

Accepted Answer

ImageSmith targets 150KB using binary search over quality settings. Results are typically within 5–10% of the target. The exact achievable size depends on image content — highly detailed images may not compress as far as simple graphics.

Question 3

Why would I need a PNG file at exactly 150KB?

Accepted Answer

Good quality for standard web images, social media posts, and news article photography. Common use cases include: social media posts, news articles, web galleries, portfolio previews.

Question 4

Is 150KB a good size for PNG images?

Accepted Answer

Good quality for standard web images, social media posts, and news article photography. For PNG specifically, lossless compression means 150KB is achieved by converting to a more efficient format like WebP.

Compress PNG Images to 150KB

Other PNG Size Targets

Compress PNG to 150KB — FAQ