---
title: "Free Image Resizer – Change Image Dimensions — Nexvert"
description: "Resize image width and height for free. Instant pixel dimensions adjustment in your browser."
url: https://nexvert.online/resize-image/
---

# Free Image Resizer

Resize image width and height for free. Instant pixel dimensions adjustment in your browser.

## What is Image Resizer?

Resize photos for Instagram, Facebook, passport applications, or web performance. Our client-side resizer features aspect ratio constraints, preset social media resolutions, and high-quality multi-pass bicubic downsampling.

## How to use Image Resizer

1. **Add your file or input** — Choose a supported file, drag it onto the upload area, or type/paste the data this tool works with.
2. **Adjust the options** — Pick the output format, quality, size or other settings the tool offers. Defaults work well for most files.
3. **Process and download** — Run the tool and save the result. Processing happens in your browser, so nothing is uploaded to a server.

## Frequently asked questions

### How do I keep my image from stretching or distorting when resizing?

Keep the aspect ratio lock toggled on. When you type a new width, the resizer automatically calculates and sets the proportional height according to the original aspect ratio.

### What algorithm is used to scale down the image?

The resizer uses multi-step bilinear or bicubic downsampling on the HTML5 Canvas, eliminating jagged pixel stepping and aliasing artifacts.

### Can I enlarge a small photo without it getting blurry?

Enlarging a low-resolution raster image cannot invent new detail that wasn’t originally captured. For photo enlargement, use our Image Enlarger tool which applies specialized smoothing filters.

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Source: https://nexvert.online/resize-image/
HTML version: https://nexvert.online/resize-image/