Tiny Toolkit

Image Resizer — Resize Images Online, No Upload

Resize any image to exact pixel dimensions, with an optional aspect-ratio lock that adjusts the other dimension automatically. Choose JPEG, PNG, or WebP as your output format. Useful for preparing images for web pages, social media, and email without needing to open a full image editor.

All processing happens in your browser. No data is sent to any server.

Frequently Asked Questions

Can I maintain the aspect ratio while resizing?
Yes. The "Lock aspect ratio" option is enabled by default and adjusts the other dimension automatically when you change one.
What output formats are supported?
JPEG, PNG, and WebP are available as output formats.
Does enlarging an image improve its quality?
No. Upscaling a raster image does not add detail. The result will look blurry or pixelated. For upscaling, use an AI super-resolution tool.

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