Compress JPEG & PNG Images Online

Shrink images with a live quality slider and before/after sizes. 100% in your browser — no upload, no sign-up.

Drop an image to compress

Drag & drop or click to choose — PNG, JPEG, or WebP

Quick Answer

Compressing a JPEG at quality 70–80 typically cuts file size 60–80% while staying visually lossless. This free image compressor runs entirely in your browser: choose JPEG, WebP, or PNG, drag the quality slider, optionally resize the longest side, and watch live before/after file sizes before you download. Your photo is never uploaded — compression happens 100% locally on your device.

How It Works

1

Drop in a PNG, JPEG, or WebP file — or click to browse

2

Pick JPEG, WebP, or PNG output and drag the quality slider

3

Optionally cap the longest side to downscale for extra savings

4

Watch the live before/after sizes, then download the compressed file

Key Facts

  • JPEG quality 70–80 usually saves 60–80% at no visible loss
  • Output formats: JPEG, WebP, or PNG — WebP often beats JPEG by 20–30%
  • Optional downscale: cap the longest side at 2560/1920/1280/800 px
  • Live before/after file sizes with saved percentage as you drag the slider
  • Accepts PNG, JPEG, and WebP input files
  • 100% client-side: images never leave your browser, works offline
  • No sign-up, no watermarks, no file size limits

Frequently Asked Questions

Is my photo uploaded to a server?

No. The compressor uses your browser’s built-in canvas encoder, so the image is decoded, re-compressed, and saved entirely on your device. Nothing is transmitted, stored, or seen by anyone else — you can even disconnect from the internet after the page loads and it keeps working.

Does compressing an image reduce quality?

JPEG and WebP are lossy: lower quality means smaller files and some quality loss. At quality 70–80 the loss is usually invisible to the eye while cutting file size 60–80%. The slider lets you trade size against fidelity, and PNG stays fully lossless if you need pixel-perfect output. You always see the result before downloading.

How much smaller will my JPEG get?

It depends on the source, but typical camera or screenshot JPEGs shrink 60–80% at quality 75 with no visible change. Switching to WebP often saves another 20–30%. Downsizing a 4000 px photo to 1920 px on the long side can cut size by 75% or more on its own. The live before/after panel shows your exact numbers.

Can I compress a PNG and keep transparency?

Yes. Pick PNG as the output format and transparency is preserved exactly — PNG is lossless, so the pixels don’t change. To make a transparent PNG dramatically smaller, export it as WebP instead: WebP supports transparency and lossy compression at the same time.

What quality setting should I use?

For web images and email, quality 70–80 is the sweet spot. Use 85–90 for portfolio or print-adjacent work where fine gradients matter, and 50–65 for thumbnails or when size matters most. Drag the slider and watch the saved-percentage badge update live to find your balance.