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File & Format Converters · Free tool

Image Resizer

Resize images by pixels or percentage. Keeps aspect ratio by default, works offline, and never sends your photo anywhere.

Updated April 2026

What it does

A free image resizer that runs entirely in your browser. Resize by exact pixels or by percentage, with aspect ratio locked by default. Pick your output format (PNG for lossless, JPG or WebP for smaller files) and download. No upload, no watermark, no queue.

Common targets: 1200×630 for Open Graph social previews, 1080×1080 for Instagram, 1920×1080 for desktop wallpapers, 2000px on the long edge for high-quality blog hero images. When in doubt, match what the platform suggests — you’ll avoid their server-side recompression artefacts.

How to use it

  1. Drop your image into the upload box.
  2. Set a target width and height, or use the Percent slider.
  3. Keep 'Lock aspect' on unless you mean to stretch the image.
  4. Pick an output format and click Resize.