100% Private & Secure

Image Resizer
Resize Images to Any Dimension

Resize JPG, PNG, WebP, GIF, and BMP images to custom dimensions. Choose preset sizes, maintain aspect ratio, batch resize — all processing happens privately in your browser.

Custom dimensionsPreset sizesMaintain aspect ratioBatch support

Drag & drop images here or click to upload

JPG, PNG, WebP, GIF, BMP — multiple files supported

Overview

What Is Image Resizing?

Image resizing changes the pixel dimensions of a picture — making it larger or smaller while trying to preserve visual quality. It is one of the most common image operations, needed whenever you prepare photos for a website, social media post, email, presentation, or print layout.

Our online image resizer runs entirely on your device. You upload one or more images, set target dimensions (custom or preset), choose a resize method, and the tool processes each image using high-quality HTML5 Canvas resampling. Nothing is sent to a server — your files stay on your device.

You can choose from preset sizes for social media platforms (Instagram, Twitter, Facebook), standard resolutions (HD, FHD, 4K), percentage scaling (50%, 25%), or enter any custom width and height. The aspect ratio toggle ensures proportions stay correct when you change one dimension.

Three resize methods give you full control: Fit scales the image to fit within target dimensions, Fill scales and crops for exact coverage, and Stretch forces the image to the exact target size. Batch mode lets you resize many images at once with the same settings. Compare before and after, then download individually or all at once.

Features

Discover Features

Custom dimensions, preset sizes, multiple resize methods, batch processing, format control, and total privacy

Custom Dimensions

Enter exact width and height in pixels to resize your images to any dimension. The tool calculates the output size instantly and processes with high-quality resampling.

Preset Sizes

Quick-select presets for common dimensions: 50%, 25%, HD, FHD, 4K, Instagram (1080×1080), Twitter (1200×675), Facebook (1200×630), and Thumbnail (150×150). One click to set dimensions.

Multiple Resize Methods

Choose Fit to scale the image within target dimensions, Fill to scale and crop excess for exact coverage, or Stretch to ignore aspect ratio and match exact pixels.

Batch Processing

Upload and resize multiple images at once with the same settings. Each file is processed individually and you can download results one by one or all at once.

Privacy-First

All resizing runs on your device using HTML5 Canvas. Nothing is uploaded to any server — your images never leave your browser. Close the tab and nothing remains.

Format & Quality Control

Output as the same format, JPEG, PNG, or WebP. Adjust quality from 10% to 100% for JPEG and WebP to balance file size and visual fidelity. Before/after comparison helps you verify results.

How to use

How to Resize Images Online

Four simple steps — upload, set dimensions, resize, compare and download

01
01

Upload Images

Drag and drop one or more images onto the upload area, or click to browse. Supported formats: JPG, PNG, WebP, GIF, BMP. Add multiple files for batch resizing.

02
02

Set Dimensions & Options

Choose a preset size or enter custom width and height. Toggle aspect ratio lock, pick a resize method (Fit, Fill, Stretch), select output format, and adjust quality.

03
03

Resize

Click Resize Image or Resize All to process. Each image is resized on your device using high-quality canvas resampling. Results appear below with full stats.

04
04

Compare & Download

Use the before/after slider to compare original and resized images. Check dimensions and file size changes. Download each image individually or use Download All for batch results.

Use Cases

Common scenarios where image resizing saves time and ensures the right dimensions

Social Media

Resize images to exact dimensions required by Instagram, Twitter, Facebook, and other platforms. Use built-in presets for perfect sizing every time.

Web Development

Prepare images at the exact pixel dimensions needed for websites, responsive layouts, hero banners, and cards. Reduce dimensions to improve page load speed.

E-commerce

Resize product photos to consistent dimensions for listings and galleries. Batch process entire collections with one set of dimensions for a uniform look.

Presentations & Documents

Resize images to fit slide dimensions or document layouts. Use Fit mode to ensure images scale proportionally within your target area.

Thumbnails & Avatars

Generate thumbnails at 150×150 or any small size for galleries, user avatars, and contact lists. Use the Thumbnail preset for one-click square crops.

Mobile Apps

Prepare image assets at required sizes for app store screenshots, splash screens, and in-app graphics. Batch resize for multiple screen densities.

Compare Plans

Free vs Paid — Image Resizer

Get started free, upgrade when you need more power.

Feature
Free
Paid
Daily usage
5 uses/day
Unlimited
File size limit
10 MB
Up to 500 MB
All core features
No software installation
Works on any device
Files stay on your device
Batch processing
Priority support
Upgrade — starting at $4.99/mo
Upgrade to Full Version

Unlock the Full Power of Image Resizer

Remove daily limits, process larger files up to 500 MB, enable batch processing, and get priority support.

Buy Full Version — $4.99/moor $200 enterprise

Media & Image Tools includes:

  • 7 image & media tools
  • Unlimited daily uses
  • 100 MB file size limit
  • Batch processing
  • All output formats

Also available in the All Tools Bundle

FAQ

Frequently Asked Questions

Common queries about the Image Resizer tool

Q1. What image formats can I resize?
You can upload JPG, JPEG, PNG, WebP, GIF, and BMP files. The tool processes them on your device and outputs in the same format, JPEG, PNG, or WebP — your choice.
Q2. Does resizing reduce image quality?
Resizing changes pixel dimensions, which can affect quality. Enlarging images may add blur, while shrinking removes detail. Use the quality slider (for JPEG/WebP) to control compression. The before/after comparison lets you verify the result before downloading.
Q3. Are my images uploaded to a server?
No. All resizing happens entirely on your device using HTML5 Canvas. Nothing is sent over the internet. Your files stay private.
Q4. What is the difference between Fit, Fill, and Stretch?
Fit scales the image to fit within the target dimensions while keeping its aspect ratio — the result may be smaller than the target on one axis. Fill scales to cover the entire target area, cropping any excess from the center. Stretch ignores the original aspect ratio and forces the image to exactly match the target width and height.
Q5. Can I resize multiple images at once?
Yes. Upload multiple files via drag and drop or the file picker. Set your target dimensions and options once, then click Resize All. Each image is processed with the same settings. For percentage presets, each image is resized relative to its own original dimensions.
Q6. How does the aspect ratio toggle work?
When Maintain aspect ratio is on, changing the width automatically calculates the height to keep the original proportions, and vice versa. Turn it off to enter independent width and height values.
Q7. Is the tool free?
Yes. The Image Resizer is completely free to use. No account, no limits, no watermarks. Use it as often as you need for personal or commercial projects.
Q8. Can I use this on my phone or tablet?
Yes. The tool works on any modern device with a browser — Windows, Mac, Linux, iOS, or Android. Tap to upload, set dimensions, and resize. Large images or many files may take longer on mobile.
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