Is the image converter free to use?

Yes, all our image tools including the converter, resizer, and optimizer are completely free to use.

Are my images uploaded to a server?

No, we use a privacy-first approach. All image processing happens locally in your browser, so your files never leave your device.

What image formats are supported?

We support a wide range of formats including JPG, PNG, WEBP, SVG, and GIF for conversion and optimization.

Lossy vs. Lossless Compression: Which Should You Choose? | Image Converter & Optimizer

The Compression Trade-off

Image optimization is always a balancing act between file size and visual quality. Understanding the two main types of compression is key to mastering this balance.

Lossless Compression

Lossless compression reduces file size without removing any visual data. If you compress an image losslessly and then decompress it, it will be pixel-for-pixel identical to the original. This is ideal for logos, typography, and medical imaging where every detail matters. PNG is a purely lossless format.

Lossy Compression

Lossy compression permanently discards some data to achieve much smaller file sizes. It relies on the fact that the human eye cannot perceive subtle differences in color and detail. JPEG is the most famous lossy format.

When to Use Which

For photographs on the web, lossy compression (like a JPEG or lossy WebP at 80% quality) is almost always the right choice. The file size savings are massive, and the quality loss is usually imperceptible. Use our Image Optimizer tool to experiment with different quality sliders and see the results in real-time.