画像圧縮ツールサイズ半分、同じ見た目。

アップロードなしで JPG、PNG、WebP を縮小。ライブでサイズ比較。

How It Works

Drag PNG, JPG, or WebP files into the drop zone.

Match source or force to JPG/WebP; slide quality between 30–100%.

Each result shows before/after size.

Pre-compressed files upload faster everywhere.

Smaller images improve LCP scores.

Fit under Gmail/Outlook attachment caps.

Your files never leave your browser.

How much can I compress without visible quality loss?

For photos, quality 80–85 in JPG or WebP drops file size 50–70% and is visually indistinguishable on screens.

Is this really compressing, or just converting?

Both. The image is re-encoded at a lower quality target.

Does it upload my images?

No. The compressor runs in your browser via canvas.

Will PNG transparency be preserved?

Only if you output PNG or WebP. JPG flattens to white.

Large images (10 MB+)?

Works. No server roundtrip means you are bounded only by RAM.

Does it strip metadata?

Yes. EXIF, GPS, and ICC profiles are dropped.

Batch hundreds of images?

Yes — drop as many as you want.

Best use case?

Web delivery, email attachments, and marketplace listings.

Upload the compressed file for a permanent link.