원클릭툴OneClickTool

Pixel size adjustment

Image Resizer

Resize images by width, height, and fit mode directly in your browser.

Browser processing · no file upload to our server

Drag images here or click to upload

JPG, PNG, WebP, HEIC · up to 10 files · 20MB each · paste supported

Processed in your browser · no server upload

1. Choose2. Convert3. Download

Core Options

Advanced Settings
Tokens

Examplesample-image.webp

{name}=source filename, {index}=number. Leave blank to use the source filename.

Upload at least 1 image to run this tool.

How to use Image Resizer

Create images at required pixel sizes such as 1200px or 1000x1000px without sending the original file to a server.

Recommended workflow

  1. 1.Upload an image.
  2. 2.Enter width, height, and fit mode.
  3. 3.Run resize.
  4. 4.Download the resized image.

Image Resizer output checks

  • Check the output KB or MB against the upload limit.
  • Verify pixel dimensions and whether transparency is preserved.
  • Open at 100% size to check text and edge sharpness.
Processing method

The image is resampled to the requested dimensions. Contain keeps the complete image, while cover may crop edges to fill the frame.

How files and inputs are handled

This tool processes files and inputs in the current browser. OneClickTool does not receive or store the original content on its own server.

Frequently Asked Questions

What is the difference between contain and cover?

Contain keeps the whole image visible with padding. Cover fills the target box but can crop the edges.

What happens if I enter only the width?

Width-only mode keeps the original ratio and calculates height automatically.

Can I keep the original aspect ratio?

Yes. Use contain, width-only, or height-only mode to preserve the ratio.

Supported Scope

JPG, PNG, WebP, and HEIC images can be converted, compressed, resized, or prepared with presets.

RAW editing, SVG vector editing, and AI background removal are not currently supported.

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Image Quality Settings

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