How to compress an image
- Choose one or more images (JPG, PNG, WebP or GIF first frame).
- Set the quality. 70–80% is a sweet spot: files shrink a lot and the difference is hard to see.
- Choose a maximum width. Most websites and social apps never show images wider than 1920 pixels, so resizing large phone photos saves the most space.
- Download each compressed image. If a result is bigger than the original, keep the original — it was already well optimised.
How image compression works
Photos from modern phones are often 3–8 MB with 12–50 megapixels. This tool redraws the image at your chosen size and re-encodes it with lossy compression, which removes fine detail the eye barely notices. Two settings matter most:
- Dimensions. Halving width and height cuts the pixel count by 75%.
- Quality. Lower quality means stronger compression. Below about 60% you may see blocky areas in skies and gradients.
JPG vs PNG vs WebP
| Format | Best for | Notes |
|---|---|---|
| JPG | Photos | Works everywhere; no transparency. |
| PNG | Logos, screenshots, graphics with text | Lossless and supports transparency, but large for photos. |
| WebP | Websites | Usually 25–35% smaller than JPG at similar quality; supported by all modern browsers. |
Why compress images?
Smaller images make websites load faster (which helps Google rankings), fit within upload limits on job and exam forms, send faster on WhatsApp and email, and save storage. Need exact dimensions too? Use the image resizer.
Frequently asked questions
Are my images uploaded?
No. Compression uses your browser's built-in image tools, so your photos never leave your device.
How do I compress an image to under 100 KB or 200 KB?
Choose a max width of 1080 or 800 pixels and quality around 60–70% with JPG or WebP. Check the size shown, and lower the settings if it is still too large.
Does compression remove location and camera data?
Yes. Redrawing the image removes EXIF metadata such as GPS location and camera details, which is good for privacy.
Why is my PNG not getting smaller?
PNG is lossless, so quality settings don't apply. Convert it to JPG or WebP, or reduce its width, for a much smaller file.
