Compress Images Online for Free Without Losing Quality

A photo taken with a modern smartphone easily weighs 4-8 MB. That is fine for printing, but far too much for an email, a website or an online form that only accepts small files. Compressing an image means reducing its file size while keeping the visual quality practically identical.

With the free Compress Image tool you do it straight from the browser — nothing to install, no account to create.

How to compress an image online in 4 steps

1. Open the Compress Image tool.
2. Drag your photo into the upload area (JPG, PNG or WebP, up to 20 MB).
3. Pick one of the three compression levels: high quality, medium or light.
4. Check the before/after comparison slider and download the compressed file.

The side-by-side comparison is the real advantage: you see immediately whether the compression is visible or not, before downloading anything.

Which quality level to choose

• High quality: moderate size reduction, differences invisible to the naked eye. Ideal for photos you want to print or archive.
• Medium: the best trade-off for most uses — websites, e-commerce, documents.
• Light: maximum size reduction. Perfect for email attachments, messaging apps and uploads with strict limits.

For photos (JPG) the compression works on details the eye barely notices; for graphics and screenshots (PNG) it optimizes the color palette. Either way, a 5 MB photo usually drops below 1 MB with no perceivable difference.

What happens to uploaded files

Privacy is part of the design: uploaded files stay on the server only for the time of processing and are automatically deleted within 60 minutes. No signup, no personal data collection, no archive of your images.

Frequently asked questions

Does compression ruin the photo? With the high or medium level the difference is imperceptible in the vast majority of cases. The before/after slider lets you verify it on your specific file before downloading.

What is the maximum file size? 20 MB per file — more than enough for any smartphone or camera photo.

How many images can I compress? The tool is free with a generous daily limit (20 files per day), designed for normal personal and work use.

Can I shrink files even further than JPG allows? Yes: converting to WebP or AVIF gives you even smaller files at the same quality. Read the guide on converting WebP to JPG and back.

Other useful tools

The same suite also includes Resize to change pixel dimensions, Crop and Remove Background. All free, all without registration.