AbstractPrisma
Privacy first

Image Compressor

Compress PNG and JPG locally. Nothing is uploaded — everything runs in your browser.

Drag your images here or click to select

PNG, JPG, WebP — processed locally

How to compress an image without losing quality?

Compressing an image reduces the file size (in KB/MB) while keeping an acceptable look. The trick is choosing the right format and compression level: WebP is usually 25-35% smaller than JPG/PNG at the same quality. Lighter images make a site faster, which improves SEO and the mobile experience. This tool compresses in your browser, without uploading files to any server.

Web image tips

  • Use WebP when possible (smaller than JPG/PNG)
  • JPG for photos, PNG for images with transparency
  • Max width around 1920px for web
  • Under 200 KB per image whenever you can

AbstractOS

Precisa de um site rápido e leve?

Crie o site no Prisma Studio com imagens já otimizadas e publique em minutos.

Criar app com IA

Was this tool helpful?

Be the first to rate

How to compress images online

  1. 1

    Upload the image

    Drag or select JPG, PNG or WebP files straight from your device.

  2. 2

    Adjust the quality

    Set the compression level and preview the final size before downloading.

  3. 3

    Download the result

    Download the optimized, lighter image, ready for the web.

Frequently asked questions

Are my images uploaded to a server?

No. Compression runs in your browser — the images never leave your device.

Which formats are supported?

JPG, PNG and WebP. The tool reduces file size while keeping good visual quality.

Does compression lose quality?

You control the compression level. You can shrink the size a lot with minimal perceptible loss.

Compare with alternatives

Online image compressor — free and private

Compress PNG, JPG, and WebP directly in your browser. No files are uploaded to any server — all processing happens locally. Free tool to reduce image size without noticeable quality loss, ideal for optimizing photos for websites and social media.

Why use this tool

  • Online image compressor — free with no limits
  • Local processing — nothing is sent to servers
  • Support for PNG, JPG, and WebP
  • Size reduction while keeping good visual quality
  • Real-time before/after comparison
  • Individual or batch download

How to use

  1. Drag images to the drop zone or click to select
  2. Wait for automatic compression — runs in your browser
  3. Compare original and compressed with the before/after slider
  4. Download compressed images one by one or all at once

Frequently asked questions

Are my images sent to any server?
No. All compression happens in your browser. Your files never leave your computer.
Is the tool really free?
Yes. There are no fees, mandatory signup, or usage limits. Use as many images as you need.
Which formats are supported?
PNG, JPG (JPEG), and WebP. Images in other formats will not be processed.