Question 1

Does resizing reduce image quality?

Accepted Answer

Downscaling (making smaller) generally maintains quality well. Upscaling (making larger) may cause some blur since new pixels are interpolated. For best results when enlarging, don't go beyond 200% of the original size.

Question 2

What does the aspect ratio lock do?

Accepted Answer

When locked, changing the width automatically adjusts the height (and vice versa) to maintain the original proportions. Unlock it to set width and height independently.

Question 3

What are the percentage presets for?

Accepted Answer

Quick presets (25%, 50%, 75%, 150%, 200%) let you scale the image relative to its original size with one click, rather than manually calculating pixel dimensions.

Question 4

Is my image uploaded to a server?

Accepted Answer

No, all resizing happens entirely in your browser using the Canvas API. Your images never leave your device.

Question 5

What output format is used?

Accepted Answer

The output matches your input format — PNG files stay as PNG, everything else outputs as JPEG with 92% quality.

Image Resizer

Frequently Asked Questions