Image Resizer

Fast in-browser resize. No upload.

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Overview

Resize images quickly in your browser. Nothing is uploaded. Lock aspect ratio, set width/height, and choose output format and quality.

How to use

  1. Add or drop images.
  2. Enter width/height and toggle aspect ratio lock.
  3. Pick output format (JPEG/PNG/WebP) and quality, then convert.
  4. Download with size suffix in the filename.

Use cases

  • Normalize blog article image widths.
  • Batch downscale thumbnails for SNS.
  • Lighten EC product images.

Tips & knowledge

  • For web hero images, around 1920 px on the long side is a good baseline.
  • Photos → JPEG, UI/icons → PNG/WebP often works well.
  • For extra savings, combine with compression.