Free image resizer — batch resize images online
Resize images and photos online, in bulk, to exact pixel dimensions or standard presets (4K, 2K, 1080p, web, thumbnail). Runs entirely in your browser — nothing is uploaded.
How to resize images with ImageForge
1. Drop your images or click to browse (up to 200 at once). 2. Under resize, pick a preset — 4K (3840px), 2K (2560px), Full HD (1920px), HD (1280px), Web (1920px WebP), Thumbnail (512px) — or set a custom max dimension. 3. Compress, then download individually or as a ZIP.
Why resizing matters
Dimensions are the single biggest factor in image file size — halving the pixel count quarters the number of pixels. Most images are exported far larger than they're ever displayed: a 4000px photo shown at 800px carries 25× the pixels it needs.
Choosing the right dimensions
Full-width hero: 1920–2560px. Content width: 1280px. Product cards: 800–1000px. Thumbnails: 400–512px. For social posts, match the platform's display size — never wider than 2048px. Always keep width and height attributes on the tag to prevent layout shift.
Resize vs compress — you need both
Resizing reduces pixel count; compression encodes those pixels more efficiently. Resizing a 4000px photo to 1920px removes 75% of pixels, then converting to WebP at quality 80 compresses what's left. ImageForge does both in one step.
Private by design
Your images never leave your computer. ImageForge runs WebAssembly codecs locally — no uploads, no server storage, no tracking pixels, no account. Safe for confidential and client work.
Related guides
Compress your images now — free and private
Drop your files and ImageForge compresses them in your browser. No uploads, no accounts, no limits. Batch process hundreds at once and download a ZIP.