Image Resizer

Resize images online for free. Change dimensions of PNG, JPG, and WebP files while maintaining quality. No upload required - works in your browser.

Input

Supported formats: PNG, JPG, WebP

What is the Image Resizer?

The Image Resizer is a browser-based tool that allows you to change the dimensions of your images. Whether you need to shrink a photo for a website, create a thumbnail, or adjust an image for social media, this tool makes it easy. It supports common formats like PNG, JPEG, and WebP.

How Image Resizer Works

Image Resizer runs directly in your browser and applies deterministic logic to transform the input into the final output. The tool validates your input, processes it instantly, and returns consistent results based on the selected options. This keeps resize images online for free. change dimensions of png, jpg, and webp files while maintaining quality. no upload required - works in your browser. fast, private, and repeatable without sending data to a server.

Popular Use Cases

1Quickly prepare clean output with Image Resizer before publishing content.
2Standardize team workflows with repeatable Image Resizer results across projects.
3Validate and refine drafts using Image Resizer during QA and review cycles.
4Save time on manual editing by automating repetitive tasks with Image Resizer.

Key Features

Client-side processing: Your images never leave your browser.
Support for PNG, JPEG, and WebP formats.
Maintain aspect ratio option.
Real-time preview of the resized image.
Fast and secure.

How to Use

1

Select an image file from your device.

2

Enter your desired width or height.

3

Check 'Maintain Aspect Ratio' to automatically calculate the other dimension.

4

Select the output format (PNG, JPEG, or WebP).

5

Click 'Run Tool' to resize the image.

6

Download the resized image from the preview section.

Pro Tips for Better Results

Tip 1Start with a clean input format before running Image Resizer for the most accurate output.
Tip 2Test a short sample first, then process the full data once settings look correct.
Tip 3Keep a reusable template of your preferred options to speed up repeat runs.
Tip 4Pair Image Resizer with related MiniToolStack tools to build a faster workflow.

Common Mistakes

Upscaling small images too much, which causes pixelation.
Forgetting to maintain aspect ratio, resulting in stretched images.
Choosing the wrong format (e.g., using JPEG for transparent images).

Use Cases

Resizing photos for email attachments.
Creating thumbnails for YouTube or blog posts.
Optimizing images for faster website loading.
Adjusting profile pictures for social media.

FAQ

Is it free?

Yes, this tool is 100% free to use.

Are my images uploaded?

No, all processing happens locally in your browser. Your images are not sent to any server.

What formats are supported?

We support PNG, JPEG, and WebP.