JSON Minify / Compress: Shrink the Size
Online JSON minifier: strip extra spaces, line breaks and indentation to get the smallest JSON, perfect for request bodies or reducing transfer size.
While debugging we like JSON nicely formatted and readable, but on the network or in a file those extra spaces and line breaks only add size. Minifying removes the characters that are "friendly to humans but redundant for machines".
Note that minifying only removes whitespace — it does not change the meaning. It is usually the inverse of formatting: format for reading, minify for shipping.
If your JSON contains string values with lots of consecutive spaces, minifying will not touch the inside of those strings; it only cleans whitespace outside the structure.