Large, uncompressed images are one of the most common reasons a website or a shared document feels slow. The good news is that most photos carry far more data than a screen actually needs — compressing them intelligently can cut file size dramatically with no visible difference.
Why image compression matters
Every extra megabyte an image carries is a megabyte a visitor has to download before they see your page, and a slower page tends to mean a higher bounce rate. For anything going on the web — a blog post, a product photo, a portfolio piece — compression is one of the cheapest performance wins available.
Lossy vs. lossless compression
Lossless compression reduces file size without discarding any image data — it's ideal for logos, icons and screenshots with flat colors and sharp edges. Lossy compression discards some data to shrink the file much further, which works well for photographs where a tiny, imperceptible quality trade-off is an easy win.
A simple workflow
- Start with the largest reasonable source image rather than a re-saved copy.
- Resize to the actual dimensions you need before compressing — don't ship a 4000px photo for a 400px thumbnail.
- Compress with a quality setting around 70–80% as a starting point for photos.
- Compare the compressed version at 100% zoom before publishing it anywhere.
- Prefer modern formats like WebP where the platform supports them.
To try this without installing anything, Brisqnex's free Image Compressor shows the original and compressed versions side by side as you adjust the quality, and works entirely in the browser — nothing is uploaded to a server.
Back to all articles
