원클릭툴OneClickTool
KO

Pixel size adjustment

Image Resizer

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

Drag images here or click to upload

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

Copy an image and press Ctrl+V to paste it here

Processed in your browser · no server upload

1. Choose2. Convert3. Download

Core Options

Adjust only what you need.

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.

Upload an image to compare the original and result here.
Uploaded files and conversion results will appear here.

Usage criteria

Image Resizer: how to review the result

Review what the tool changes and how to check the output before using it elsewhere. Comparing your inputs with the destination requirements helps prevent an otherwise valid result from being rejected.

What the result means

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

Resize images to exact pixel dimensions

Recommended workflow

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

Checks before finishing

After processing, review Contain/Cover, Width only, Output format, image resizer, resize photo online before using the result.

  • Contain/Cover
  • Width only
  • Output format
  • image resizer
  • resize photo online

Processing method

Image output depends on source dimensions, file format, compression quality, and transparency. Photos, logos, and text-heavy graphics can react differently to the same setting, so review both pixel dimensions and visible quality.

How files and inputs are handled

Core processing runs in the current browser whenever possible. OneClickTool does not store original files or tool inputs on its own server. Review the preview and output values before downloading or submitting an important result.

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.

  • image resizer
  • resize photo online
  • change image dimensions

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Check the criteria before using the tool to review results faster.

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