Scale JPEG, PNG & WebP images by percentage or exact pixels. Resize single or batch images with aspect ratio lock — all in your browser.
or click to browse
Supports JPEG, PNG, WebP — up to 10 images, max 10MB each
Fast, free, and private image resizing — everything happens in your browser.
Upload up to 10 images at once. Each image can have independent resize settings, or apply the same settings to all with one click.
Scale images by percentage (10%–200%) or set exact pixel dimensions. Switch modes instantly with live preview.
Lock aspect ratio to prevent distortion, or unlock for free-form resizing. Width and height stay proportional by default.
Resized images keep their original format — PNG stays lossless, JPEG stays compressed. No format surprises.
All resizing happens in your browser. Your images never leave your device — zero uploads, zero privacy concerns.
See the resized result next to the original. Compare dimensions and file size before downloading.
Three simple steps to resize your photos.
Click or drag-and-drop up to 10 images — JPEG, PNG, or WebP supported, up to 10MB each.
Choose percentage scaling or exact pixel dimensions. Lock aspect ratio to keep proportions, or unlock for custom sizes.
Click Resize to preview the result. Download individually or batch download all resized images.
Everything you need to know about resizing images with SlimImg.
Yes! Upload up to 10 images simultaneously. Each image can have its own resize settings, or enable 'Apply to All' to use the same settings for every image.
Resizing down (making smaller) generally preserves quality well. Resizing up (enlarging beyond 100%) may reduce sharpness as pixels are stretched. We recommend staying at 100% or below for best results.
Percentage mode scales the image relative to its original size (e.g., 50% = half size). Pixel mode lets you set exact width and height values for precise dimensions.
Unlocking aspect ratio allows you to set width and height independently, which may stretch or squish the image. We keep it locked by default to prevent accidental distortion.
Never. All resizing happens 100% in your browser using the Canvas API. Your images never leave your device — we don't even have a server to receive them.
SlimImg supports resizing JPEG, PNG, and WebP images. The resized image keeps its original format — PNG stays lossless, JPEG stays compressed.
You can upload up to 10 images per session, each up to 10MB in size. There's no limit on how many times you can resize — clear and upload new images anytime.