Image Resizer

Resize any image to exact dimensions or scale it down in seconds — right in your browser. The free Image Resizer below lets you enter width and height in pixels with an aspect-ratio lock, or pick a quick percentage preset. No signup, no watermark.

Image Resizer

Resize JPG, PNG & WebP images by pixels or percentage. Free, private, no signup.

100% private — your images never leave this browser. No uploads, no tracking.

How to resize an image

  1. Step 1: Upload your image.
  2. Step 2: Enter width/height in pixels (aspect lock keeps proportions) or pick a percentage preset.
  3. Step 3: Download the resized image.

Pixel dimensions vs percentage

Use exact pixels when you need a precise size — for example profile pictures, banners or thumbnails. Use a percentage preset for quick shrinking when the exact dimensions don’t matter.

Resize by Pixels, Percentage, or Preset

Set exact pixel dimensions (e.g. 1920×1080), scale by percentage, or pick a preset for common uses. Lock the aspect ratio to avoid stretching — the tool scales proportionally by default. Upscaling beyond the original size is possible but won’t add detail; for best results, resize down, not up.

Image Resizer for Instagram, YouTube, and Social Media

Every platform crops differently. Instagram posts display at 1080×1080 (square) or 1080×1350 (portrait); stories and reels need 1080×1920. YouTube thumbnails work best at 1280×720. Uploading a 4000px photo when the platform displays 1080px wastes bandwidth and slows your page — resize first, then upload.

Use the preset dropdown for one-click social sizes, or enter custom pixels for exact control.

Resize Images Without Losing Quality

Resizing down (making an image smaller) preserves visual quality — you’re discarding pixels the display can’t show anyway. The quality loss people notice comes from saving as low-quality JPG afterward, not from the resize itself. Our resizer uses high-quality bicubic resampling, then lets you choose the output format and quality separately.

For the sharpest results: resize to the exact display size, sharpen lightly if the tool offers it, and export as JPG 80–85% for photos or PNG for graphics.

Is it free?

Yes — the Image Resizer is completely free to use, with no signup and no watermark.

Will resizing reduce quality?

Downscaling is safe and keeps details sharp. Upscaling large amounts can soften details.

Which formats work?

JPG, PNG and WebP.

Is my data private?

Yes — everything happens in your browser. Your images never leave your device.

Need smaller files after resizing? Try our image compressor to shrink JPG, PNG and WebP images.