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Free Online Image Resizer

Change photo dimensions by custom pixel width, height, or percentage scale with aspect ratio lock.

100% Private (In-Browser)
Input: jpg, jpeg, png, webp

Choose an image or drag & drop here

Supported formats: jpg, jpeg, png, webp. Fast, secure, and private.

Source Preview

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Client-side WebWorker processing active.

Processing Complete!

New Size: Savings:
Download File

How to Use Free Online Image Resizer

1

Select or drag in your photo.

2

Enter your target width or height (aspect ratio is locked by default), or choose a percentage.

3

Preview the resized image and click "Download Resized Image".

Technical Specifications & Architecture

The Free Online Image Resizer operates with a high-performance client-side rendering pipeline utilizing modern browser APIs including the HTML5 Canvas 2D context, OffscreenCanvas, and Web Workers. By eliminating unnecessary server hops, your images remain completely private on your local machine while completing operations in milliseconds.

Key Features & Guarantees

  • Bi-cubic interpolation resampling for smooth edges
  • Aspect ratio lock prevents image distortion or stretching
  • Percentage scaling shortcuts (25%, 50%, 75%, 200%)

Our Privacy Guarantee

Unlike traditional image sites that store your photos indefinitely, ImageForge processes your image locally in your browser. We never collect or inspect your private files.

Read Privacy Policy →

Frequently Asked Questions

Keep the "Lock Aspect Ratio" checkbox turned on. When you change width, height adjusts proportionally automatically.

Privacy & Cookie Choices

We use cookies and device storage to enhance site navigation, measure tool performance, and support Google AdSense monetization. We process your image operations client-side whenever possible for maximum privacy. Review our Privacy Policy and Cookie Policy.

Strictly Essential Required for tool execution and security.
Analytics & Performance Aggregated usage metrics (GA4).
Advertising & AdSense Google AdSense partner delivery.