What is the recommended quality setting for web photos?
80% to 85% is the sweet spot: it slashes file size by over 60% while remaining visually indistinguishable from the original.
JPGをオンラインで圧縮 — 写真の容量を軽量化
Optimize JPEG photos and reduce file size with DCT quantization.
Drop JPG images here to compress
Fine-tune JPEG compression levels with instant visual feedback
画像プレビュー
使用方法 JPG画像を圧縮
1
選択してアップロード
Select or drag your JPG photos into the compression workbench.
2
設定とプレビュー
Set your target quality (e.g. 80% for web, 60% for email, 90% for print).
3
処理とダウンロード
Click 'Compress JPG' to download your reduced-size photos.
技術アーキテクチャとクライアント側のプライバシー
Processing Engine
Browser Canvas 2D & Binary Transcoder
Privacy Model
100% In-Memory Sandbox · Zero Server Uploads
Format Standards
PNG, JPEG, WebP, SVG, ICO Specifications
Execution Speed
Zero Network Latency · Instant Local Output
Frequently Asked Questions
Can I see how much file size I saved?
Yes. IMGUtils displays the before and after file sizes and percentage reduction in real time.
Does this tool strip hidden metadata?
Yes. Compression automatically removes non-essential EXIF markers to maximize byte savings.