Interactive utilities
Tools
File utilities that run entirely in your browser, plus practical calculators for engineering decisions and day-to-day delivery work.
8 tools
File utilities
Your files are processed on your own device and never sent anywhere. Once a tool has loaded it keeps working offline.
File Size Reducer
Shrink JPEG, PNG, WebP and PDF files right in your browser. Batch several files at once, pick a quality target, and download the smaller versions. Files never leave your browser.
JPG · PNG · WebP · PDF
Image Cropper
Crop to any aspect ratio, rotate and flip, resize to exact pixel dimensions, and export as JPEG, PNG or WebP. Runs entirely on your device.
JPG · PNG · WebP · GIF · AVIF
PDF Editor
Click existing text to replace it, add text boxes and highlights, white out anything you want gone, fill form fields, and rotate, reorder or delete pages. Your PDF never leaves the browser.
Calculators & explorables
JVM Container Memory
Manifest Readiness Linter
Timeout Retry Budget
SLO Error Budget
AKS Sizing Calculator
AKS Sizing Calculator