How to compress images without losing quality
Large images slow down websites, fill up your phone and are often rejected by forms and email. The good news: you can usually cut an image's file size by 70–90% without anyone noticing a difference. Here is how.
1. Resize first
Modern phone photos are 4000 px wide or more, while most screens show images well under 2000 px wide. Reducing the dimensions is the most powerful way to shrink a file, because the pixel count drops sharply: a 4000 px image has roughly four times as many pixels as a 2000 px one.
- Websites and blogs: 1600–2000 px wide.
- Thumbnails and product photos: 800–1200 px.
- Printing: do not resize; keep the original.
2. Pick the right format
- JPG: the most compatible format, ideal for photographs.
- WebP: typically 25–35% smaller than JPG at similar quality and supported by every modern browser. Great for websites and shops.
- PNG: lossless, so photos become large. Use it only for logos, screenshots and images that need transparency.
3. Set quality between 75 and 85%
JPG and WebP let you choose a quality level. 75–85% is the sweet spot: the visual difference is practically invisible and the file is far smaller than at 100%. Go down to 60–70% only when size matters more than detail, for example preview images.
4. Step by step in Cyanframe
- Open the compress & convert tool and drag your images in or click to choose them. You can select several at once.
- Enter a maximum width in pixels (for example 2000), or 0 to keep the original size.
- Choose the format (JPG or WebP) and set quality to 80%.
- Click “Start processing”. You will see the size before and after for each image; then download the results.
Everything runs in your browser, so your images are never uploaded to a server — important if your photos are personal or belong to clients.
Common mistakes
- Compressing the same image again and again: every JPG save loses a little detail. Always start from the original.
- Converting to PNG to “improve” quality: it cannot bring back lost detail; it only makes the file bigger.
- Deleting the original: always keep a full-size copy in case you need to print later.