How to Reduce Image Size Without Losing Quality

Big images slow down websites, bounce off email limits and get rejected by upload forms. The good news: most photos can be 50–80% smaller with no visible difference.

1. Resize to the size you actually need

A modern phone photo is around 4000 pixels wide, but most screens show images at 1920 px or less. Use the Image Resizer to set a width:

• Website hero image: 1920 px
• Blog image: 1200 px
• Instagram post: 1080 px
• Profile photo / thumbnail: 400–800 px

Halving the width cuts the file size to about a quarter.

2. Compress

Next, run the photo through the Image Compressor. Balanced is the sweet spot for most photos. Try Strong for thumbnails.

3. Use the right format

• JPG for photos.
• PNG for logos, screenshots and images with transparency.
• WebP for websites — usually 25–35% smaller than JPG at the same quality. Convert with PNG to WebP.

What "without losing quality" really means

All compression removes some data. The trick is to remove only what the eye can't see. At around 70–85% quality, almost nobody can tell the difference — but the file is a fraction of the size.

Privacy bonus

DoraPDF resizes and compresses images in your browser. Your photos are never uploaded, which matters for personal pictures and ID scans.