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Image Size Compressor Online Free

Compress JPG, JPEG, PNG and WebP images online for free. Set a target size such as 20KB, 50KB, 100KB or 200KB, choose the output format, resize when needed, preview the result and download it instantly.

Drag & drop your images here

or choose files from your device. Processing happens locally in your browser.

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🎯 Target file size

Try 20KB, 50KB, 100KB, 200KB, 500KB or enter your own target. The tool searches for a practical quality setting automatically.

🔄 Convert formats

Convert JPG to WebP, PNG to JPG, WebP to JPG and more without installing software. AVIF is offered when your browser supports it.

🔒 Private processing

Your images stay in your browser during compression. No server upload is required, which avoids many upload and server-resource errors.

Free Image Size Compressor Online

Large images can slow down websites, increase storage use and make uploads difficult. This free image size compressor helps you reduce image file size while keeping useful visual quality. You can compress an image to a target size, choose JPG, PNG or WebP output, and download the optimized file.

How to compress an image online

  1. Click Choose Images or drag your photos into the box.
  2. Select the output format and enter your target size in KB.
  3. Adjust quality or maximum width if necessary.
  4. Click Compress on the image card and download the result.

Why use a target-size image compressor?

Many compressors only provide a quality slider. A target-size workflow is more useful when a website, application form, email service or social platform has a file-size limit. For JPEG and WebP, the tool uses an automatic quality search to get close to the requested size. PNG is lossless, so reaching a very small target may require reducing dimensions.

JPG, PNG, WebP and AVIF

JPG / JPEG

JPG is a practical choice for photographs and news thumbnails. It can reach small file sizes using adjustable lossy compression.

WebP

WebP is a modern web format that can provide smaller files for many images while retaining good visual quality.

PNG

PNG is useful when transparency and lossless image data matter. Because PNG compression is lossless, a target size may require resizing rather than simply lowering a quality percentage.

AVIF

AVIF can provide highly efficient image compression, but support for encoding varies by browser. The tool detects whether AVIF output is available.

Image compression for SEO and website speed

Smaller images generally require less data to transfer, which can help page loading performance and reduce bandwidth. For websites, use sensible dimensions as well as compression: a 5000-pixel image does not need to be served when a 1280-pixel version is sufficient.

Frequently Asked Questions

Is this image size compressor free?

Yes. The browser tool is designed to work without registration or a paid account.

Can I compress an image to 20KB?

Yes. Enter 20 in the target-size field. If the requested size is extremely small, reducing maximum width can help.

Does Wisdom Imbibe store my images?

This implementation performs compression locally in the browser rather than uploading images to a server.

Why can't every PNG be compressed to an exact target size?

PNG is lossless. Unlike JPEG or WebP, there is no normal quality slider that trades image quality for file size. Resizing and other lossless optimization techniques may be needed.