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Free Online Image Resizer

Resize PNG, JPG, WebP, and BMP images by exact pixel dimensions or percentage with aspect ratio lock.

100% Free No Signup No Watermark Private In-Browser
Drop an image to resize
or choose a file from your device
Supports PNG, JPG, WebP, GIF, BMP (Max 4 MB)

High-Precision In-Browser Scaling Engine

Resize any image file by entering exact target pixel dimensions or adjusting the percentage scaling slider (10% to 500%). The aspect ratio lock ensures your photos never warp or stretch unexpectedly.

Fit, Fill, and Stretch Composition Modes

Choose Fit mode to scale inside boundaries with clean padding, Fill mode to crop from the optical center, or Stretch mode for non-uniform dimension requirements. Export directly to PNG, JPG, or WebP.

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Frequently Asked Questions

Technical answers regarding Free Online Image Resizer.

Downscaling averages pixels using high-quality bicubic interpolation to keep images crisp. Upscaling beyond 150% scales existing pixels and may soften fine details.
No. All canvas pixel manipulation and blob generation occur strictly in your local browser memory.