#071 · Image Compression & Resize Tool

Resize Image by Long Edge

Resize a photo by setting only its longest side. The shorter side is calculated automatically, so the original proportions stay intact.

Image Tool

One image
px
%
Ad space

How to use this image tool

  1. Select an image from your device.
  2. Set the options for this job.
  3. Choose Resize image, review the result, and download the new file.

What this tool does

It finds whether width or height is longer, sets that dimension to your target, and scales the other dimension by the same ratio.

scale = target long edge ÷ original long edge

Upscaling is allowed, but it cannot restore detail that was not in the source.

Supported formats

PNG, JPEG, and WebP inputs supported by your browser. Output is PNG, JPEG, or WebP. Images over 40 megapixels are rejected.

InputPNG,JPEG,WEBP
ProcessingLocal browser session

Tips for better results

  • Use 1600–2400 px for general web photos.
  • Choose PNG for transparency and JPEG or WebP for smaller photographic files.
  • Avoid enlarging small originals unless a larger pixel canvas is specifically required.

FAQ

Does resize image by long edge upload my photos?

No. Processing runs in the browser. A pinned library is loaded only when needed, but your selected image bytes are not sent to it or to Callimage.

What happens to image metadata after using this tool?

Canvas-generated image outputs generally omit EXIF and GPS metadata. Keep the original if that information matters.

Why can the result look different from the original?

Decoding, pixel processing, color profiles, and lossy output encoding can change color or fine detail slightly.

Can I use this tool on a phone?

Yes, on a modern mobile browser, although large images may exceed available memory. The tool rejects unusually large inputs before intensive work.

Which files work best with resize image by long edge?

PNG, JPEG, and WebP inputs supported by your browser. Output is PNG, JPEG, or WebP. Images over 40 megapixels are rejected.

Tool limits

PrivacyLocal processing
Large filesBrowser memory limits apply

Browse more image tools

Image tool hubs