What quality setting should I use?

Around 75-80 percent is the usual sweet spot for photographs — a large saving with no visible difference at normal viewing size. Use the live preview to judge your own image.

Does compressing a PNG help?

PNG is lossless, so savings are modest. Converting the same image to WebP or JPG usually reduces it far more.

Is my image uploaded to compress it?

No. Encoding happens in your browser.

Will compression change the dimensions?

No. Pixel dimensions stay the same — use the resize tool if you also want fewer pixels.

Can I compress several images at once?

Add them one at a time to judge each preview, which matters because the right quality level differs per image.

Runs in your browser

Compress an Image

Trade quality for size with a live preview and a format selector.

Image weight is the single biggest cause of slow pages and rejected uploads. Move the quality slider and watch both the preview and the resulting file size update immediately, so you can find the point where the saving stops being worth it. Switching the output format to WebP often halves the size again at the same visible quality.

Drop an image to compress

The preview updates live as you move the quality slider.

Choose a file

Files stay on this device — nothing is uploaded.

Processing Happens in Your Browser

Processing happens locally on your device. Your file does not need to be uploaded to our processing server.

Works offline after load No account, no storage

How it works

1
Add an image
Drop in the file you need to make smaller.
2
Adjust quality
Move the slider and watch the preview and the size update live.
3
Choose a format
Keep the original format or switch to WebP for a bigger saving.
4
Download
Save the compressed image with the saving shown as a percentage.

Features and benefits

Live preview
See the actual compressed result, not an estimate.
Before and after sizes
Original size, new size and percentage saved, always visible.
Format selector
Export as JPG, PNG or WebP whatever you started with.
Local processing
No upload queue, no daily limit, no copies left behind.

Supported formats and limits

JPG, PNG and WebP input and output. WebP typically produces the smallest files at equal quality.

Everything runs inside your browser tab, so the practical ceiling is your device's available memory rather than an upload limit. Documents up to roughly 100 MB work comfortably on a modern laptop; very large files are best handled a few at a time, and closing the tab clears all of it instantly.

Frequently asked questions

Keep your documents on your own device

Every tool here works the same way: local processing, no upload, no account. Browse the full set or read exactly how the in-browser engine works.

Browse all tools How the technology works

Processing Happens in Your Browser

How it works

Add an image

Adjust quality

Choose a format

Download

Features and benefits

Live preview

Before and after sizes

Format selector

Local processing