画像圧縮
JPG・PNG・WebP画像をオンラインで無料圧縮。アップロード不要 — ブラウザ内でローカル処理します。
点击或拖拽图片到此处
支持 JPG / PNG / WebP
所有处理在浏览器本地完成，图片不会上传至服务器。
関連キーワード
How to Use Image Compressor
Large images slow down websites, consume storage space, and make sharing files by email or messaging apps frustrating. Our Image Compressor reduces file sizes by up to 90% while preserving visual quality — all processed locally in your browser using the browser-image-compression library. No files are ever uploaded to a server, keeping your images completely private. It supports JPEG, PNG, and WebP formats. Compressed images load faster in browsers, improving page speed scores and user experience. Whether you're a web developer optimizing assets, a blogger preparing images for posts, or someone trying to reduce an email attachment, this tool delivers results in seconds.
- 1
Select an image
Click the upload area or drag and drop a JPG, PNG, or WebP image file.
- 2
Adjust quality
Use the quality slider to balance between file size and visual fidelity.
- 3
Download
Click Download to save the compressed image. The size reduction is shown before downloading.
Frequently Asked Questions
Will compression make my image look blurry?
At quality settings of 70–85%, compression is nearly imperceptible. Lower settings produce smaller files but may show artifacts, especially in high-detail areas.
Does it support PNG transparency?
Yes. PNG files with transparent backgrounds are supported and transparency is preserved after compression.
Is there a file size limit?
There's no hard server-side limit since processing is local. Very large files (50 MB+) may be slower due to browser memory constraints.