Resize Image Online
Change pixel resolution or scale by percentage with aspect ratio lock.
How it works step by step
- 01Upload your JPG, PNG, or WebP image.
- 02Input custom width and height in pixels or select a percentage (25%, 50%, 75%).
- 03Download your resized image in your preferred format.
Technical specs & privacy
Pixel or Percentage Scaling
Pick exact width/height in pixels or quickly downscale by 25%, 50%, or 75% with a single click.
Smart Aspect Ratio Lock
Automatically computes corresponding dimensions to eliminate unwanted image stretching or distortion.
Flexible Output Formats
Export your newly sized image as universal JPG, lossless PNG, or lightweight WebP.
| Supported input formats | JPG · PNG · WEBP |
|---|---|
| Output target format | NEW DIMENSIONS |
| Conversion engine | FFmpeg WebAssembly (in-browser local) |
| Storage & Privacy | Guaranteed Privacy · In-Browser Local & Sandboxed 30-Min Auto-Purge |
Frequently asked questions
What does lock aspect ratio mean?
It maintains original proportions automatically so your image is never stretched or distorted.
Can I change format while resizing?
Yes, you can export your resized image directly as JPG, PNG, or WebP.
Is my image uploaded to any server?
No. Resizing happens entirely inside your web browser using HTML5 Canvas.
Does resizing decrease file size in bytes?
Yes, reducing pixel resolution significantly reduces total file weight.
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