Have you ever tried to send a photo by email and got the message "file too large"? Or noticed your website loading slowly because of heavy images? Image compression is the solution — and it is easier than you think.
What is Image Compression?
Image compression reduces the file size of an image by removing unnecessary data. There are two types:
- Lossy compression — slightly reduces quality to achieve much smaller file sizes. Used by JPG and WEBP.
- Lossless compression — reduces file size without any quality loss. Used by PNG.
Pro Tip: For most photos, 80% quality JPG compression is undetectable to the human eye but reduces file size by 60-80%.
When Should You Compress Images?
- Before uploading photos to a website or blog
- Before sharing on WhatsApp, Instagram or Facebook
- Before sending as an email attachment
- Before uploading product photos to Tokopedia or Shopee
- Before storing large photo collections
How Much Can You Compress?
| Quality Setting | File Size Reduction | Visual Quality | Best For |
|---|---|---|---|
| 90% | ~40% | Excellent | Print, professional use |
| 80% | ~65% | Very Good | Web, social media |
| 70% | ~75% | Good | Thumbnails, previews |
| 60% | ~82% | Acceptable | WhatsApp, messaging |
Step by Step: Compress with iPixLab.com
- Go to iPixLab.com Compress Image tool
- Upload your image by clicking or dragging it onto the page
- Adjust the quality slider (we recommend starting at 80%)
- See the file size reduction instantly in the preview
- Click Download to save your compressed image
Important: Always keep a backup of your original image before compressing. Compression is permanent and the original quality cannot be recovered.
Tips for Best Results
- Start at 80% quality and only go lower if you need a smaller file
- PNG files with transparency compress better as PNG, not JPG
- Convert photos to WEBP for websites — 30% smaller than JPG
- Resize the image first if you do not need the full resolution
"A 3MB photo compressed to 400KB looks identical on screen — but loads 7x faster on a website."