Free Tool
Image Resizer
Resize images to exact pixel dimensions with locked aspect ratio and quick presets. Runs in your browser — images never uploaded. Free, no signup.
Click to upload or drag & drop an image
Resize by pixels — your image stays in your browser
Why It Matters
Right-Sized Images, Instantly
Uploading a 4000-pixel-wide photo to a spot that only displays it at 600 pixels wastes bandwidth and slows your page. Resizing images to the dimensions you actually need is a simple, high-impact optimization.
This tool resizes images by exact pixel dimensions with an optional locked aspect ratio, plus quick presets for common widths. Everything runs in your browser — no uploads.
FAQ
Questions About This Tool
Not if you keep 'Lock aspect ratio' checked — the width and height stay proportional. Unlock it only if you deliberately want to stretch the image.
Match the display size. Full-width banners are often 1600–1920px wide; content images 800–1200px; thumbnails 300–600px. Resize to roughly what's shown.
No. Resizing happens entirely in your browser — your images are never uploaded or stored on any server.
Both help. Resize first to the right dimensions, then compress to shrink the file further. Together they dramatically reduce image weight.
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