JPEG圧縮
JPEG圧縮 — 無料オンラインJPGサイズ削減
JPEG写真は必要以上に大きいことがよくあります。見た目の品質を落とさずに最大80%圧縮 — すべてブラウザ内、アップロード・登録不要。JPGをドロップ、即座により小さい版をダウンロード。
Why use this compress jpeg tool?
Reduce JPEG file size by up to 80%
No visible quality loss at recommended settings
Batch compress multiple JPEGs at once
Quality slider for the perfect size/quality balance
Before/after comparison slider
100% local, private, free, no signup
Frequently Asked Questions
How do I compress a JPEG?
Drop your JPG onto the compressor or click to browse. It is compressed instantly in your browser. Use the quality slider and comparison view, then download the smaller JPG.
How much can I compress a JPEG?
Typically 60–80% reduction with no visible quality loss at quality 70–80. Even higher compression is possible for thumbnails or previews.
Will compressing JPEG reduce quality?
There is little to no visible difference at quality 70 or higher. The built-in comparison slider lets you verify the result before downloading.
Is JPEG compression free?
Yes, completely free with no watermark, signup, or file limits. All compression happens locally in your browser.