Resize ImageRight in Your Browser

Most images are used at a fraction of the size they were captured. A modern phone shoots 12-megapixel photos (around 4000×3000 pixels), while a chat avatar needs 400 pixels, an e-commerce listing 1500, and a web hero image rarely more than 2000. Resizing to the dimensions you actually need is the single most effective way to cut file size — a 4000-pixel photo resized to 1200 pixels keeps less than a tenth of its pixels, and the file shrinks accordingly.

This resizer works two ways: scale by percentage (drag to 50% for "half size") or enter exact pixel dimensions when a platform demands them — with aspect ratio locked by default so nothing stretches. It processes whole batches with the same settings, which is the fast path for preparing a folder of listing photos or a set of screenshots at once.

The main trade-off is that downscaling is one-way: detail removed by resizing is gone, so keep your originals and resize copies. Upscaling is the reverse problem — the resizer uses the browser's high-quality interpolation, which stays clean up to about double size, but no resampler can invent detail that was never captured. If you need a sharp large version, start from a larger source.

Because the entire operation is canvas arithmetic in your browser, there's no upload, no server queue and no account — and your photos, which often carry location metadata and personal content, stay on your machine from start to finish.