Aspect Ratio Calculator
Aspect Ratio Calculator
Simplify a ratio or find a missing dimension
Aspect Ratio CalculatorPrivate browser-based image tools
Resize, compress and convert images without uploading them
Pick a tool, set the size or format you need, preview the result, and download it. Your image stays on this device while you work.
100% FreeNo hidden fees
No Sign-upInstant access
Processed LocallyFiles stay on this device
Ready to DownloadPreview the result first
Start with a task
Popular image tools
Aspect Ratio CalculatorSimplify a ratio or find a missing dimensionCompress ImageCompress to 20KB, 50KB, 100KB, 200KB or customResize ImageResize by exact pixels or percentageCrop ImageRectangle or circle crop, rotate and flipAdd Border to ImageAdd an exact white or color borderConvert to JPGConvert PNG or WebP to JPGIncrease Image SizeIncrease a file to a target KB sizePassport Photo MakerCrop passport, visa and ID photos
Built for everyday work
Clear controls, private processing
All processing happens in your browser. We never upload or store your files.
Desktop, tablet and mobile. No software installation required.
Core editing tools support JPG, PNG, and WebP.
Set dimensions, file-size targets, output format, and quality before downloading.
Three simple steps
From image to finished file
1Upload ImageChoose or drag and drop your image
2Edit & ProcessChoose options and process instantly
3DownloadDownload your image in high quality
Before you start
Common questions
Yes. The core image tools are free to use in your browser with no sign-up required.
No. The tools process files locally in your browser, so selected images stay on your device.
The homepage uploader supports files up to 50MB. Very large images depend on your device memory and browser.
Editing tools accept JPG, PNG, and WebP. The Image Size Checker supports additional browser-readable formats.