How can I compress photo file size to 50kb in Windows 10?

This is an efficient command-line method to precisely compress photo file size to 50k without installing third-party graphic editing software. It leverages Windows native System.Drawing libraries to control JPEG quality values, letting you fine-tune output volume in seconds and generate lightweight compressed copies while preserving the original source images.

Usage Guide: Press Win + X and launch Windows PowerShell, copy the full script code and replace the input file path "C:\input.jpg" and output path "C:\output.jpg" with your actual photo locations. Adjust the quality parameter value (ranging from 20 to 100; set to 50 for roughly 50KB output), then execute the script. The complete script content is as follows:

Add-Type -AssemblyName System.Drawing
$img = [System.Drawing.Image]::FromFile("C:\input.jpg")
$jpeg = [System.Drawing.Imaging.ImageFormat]::Jpeg
$codec = [System.Drawing.Imaging.ImageCodecInfo]::GetImageEncoders() | Where-Object {$_.FormatDescription -eq "JPEG"}
$encoder = [System.Drawing.Imaging.Encoder]::Quality
$param = New-Object System.Drawing.Imaging.EncoderParameters(1)
$param.Param[0] = New-Object System.Drawing.Imaging.EncoderParameter($encoder, 50)
$img.Save("C:\output.jpg", $codec, $param)

This script relies purely on built-in Windows components and rapidly helps you precisely compress photo file size to 50k, solving the demand for fixed-size photo compression for emails and web uploads.

It is particularly useful for automated batch photo compression tasks, scripting workflow integration, or advanced users who need accurate, custom control over image file weight without graphical software interfaces.