Developer Tool

Image Compressor

Resize and compress images online by target width, target height, or target file size in KB. Upload a JPG, PNG, or WebP image, preview the result, and download the compressed file instantly.

Input

Upload and set compression targets

Drop an image here or choose a local file, then set the target dimensions or the target file size. The compressor runs locally in your browser and keeps the workflow simple.

Drag and drop

Drop an image here

JPG, PNG, and WebP files are supported. The preview updates once the file is loaded.

Waiting for an image upload.

90%

Original Size

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Output Size

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Reduction

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Preview

Compressed Output

Ready

Original Preview

Upload an image to see the original preview

The preview appears here after you choose a file.

Compressed Preview

Compress the image to preview the result

The compressed file appears here before download.

Upload an image and set your compression targets to begin.

Original Dimensions

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Output Dimensions

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TL;DR

What this image compressor does

This tool helps you resize images and reduce file size in the browser, so you can create lighter assets for web pages, email content, and sharing workflows without installing desktop software.

Summary

Compress images online without leaving your browser

A good image compressor balances visual quality with file size. This page lets you reduce the image dimensions, aim for a target size in KB, and preview the result before you download it.

What Is Image Compression?

A practical way to make images smaller

Image compression reduces the bytes needed to store or transmit an image. That can happen by resizing the width and height, lowering the output quality, or both. The best approach depends on whether you are optimizing for speed, clarity, or both.

For web use, compressed images can improve page load speed, reduce bandwidth use, and keep user experience smoother on slower connections.

How It Works

How the online image compressor processes your file

The tool loads your image locally, draws it onto a browser canvas, and exports a new file using the format and quality you choose. If you set a target KB size, it adjusts the output iteratively until it gets as close as possible to that goal.

  • Upload an image and inspect the original dimensions.
  • Set width, height, or target file size in KB.
  • Preview the compressed output and download it immediately.
  • Keep the workflow browser-only and fast.

How To Use It

How do you use this image compressor?

  1. 1

    Upload a JPG, PNG, or WebP file using drag and drop or the file picker.

  2. 2

    Choose a target width, height, or target file size in KB, then select an output format.

  3. 3

    Click Compress Image to preview the result, review the file size reduction, and download the compressed file.

Quick workflow

Upload the image, choose the compression target, preview the result, and download the smaller file when you are happy with the balance of quality and size.

Benefits

Why compressed images are useful

  • Resize images to exact or bounded dimensions in the browser.
  • Target a specific file size in KB for lightweight delivery.
  • Preview original and compressed results before downloading.
  • Keep the workflow simple with one upload and one download.

Use Cases

Where an image compressor helps

Faster web pages

Reduce image payloads for landing pages, blog posts, and product pages so content loads more quickly.

Email assets

Create lighter images for newsletter banners and email marketing files where file size matters.

Social sharing

Resize and compress graphics before uploading them to social platforms or campaign assets.

Product handoff

Prepare smaller image files for documentation, internal reviews, and developer workflow handoff.

FAQ

Common questions

These short answers are written for fast scanning and featured snippet style clarity.

What is an image compressor?

An image compressor reduces image file size by resizing dimensions, lowering encoding quality, or both. It helps images load faster while keeping enough visual detail for the intended use.

How do I compress an image online?

Upload an image, choose a target width or height, or set a target size in KB, then click Compress Image. The tool processes the image locally in your browser and lets you download the result right away.

Can I resize images in this tool?

Yes. Enter a target width, target height, or both. When both dimensions are provided, the tool fits the image within that box while keeping the aspect ratio unless you choose otherwise.

Can I compress to a specific file size?

Yes. Enter a target size in KB and the compressor will try to reach that size by adjusting output settings and dimensions. Results depend on the image content and chosen format.

Does the compressor work in the browser only?

Yes. The upload, resize, compression, and download steps happen client-side in your browser. Your files are not sent to the server by this page.

What image formats are supported?

You can upload JPG, PNG, or WebP files. For download, the tool can export PNG, JPEG, or WebP depending on the format you select.

What is the best format for small file size?

WebP often offers the best balance of quality and file size for modern browsers. JPEG is also useful for photos, while PNG is better when you need transparency.

Authority Links

References behind the tool

· · Last reviewed: April 2026