不會。全部在瀏覽器中處理，檔案不會上傳到伺服器。

Which formats are supported?

Input: common raster formats plus HEIC/HEIF. Output: PNG, JPEG, or WebP.

How does compression work?

Uses the browser-image-compression library and Canvas in the browser — no server processing.

Yes. Add multiple files and download a ZIP archive.

一次最多 2000 個檔案,單檔案最大 150 MB。大於 50 MB 的檔案標記為「大檔案」。
HEIC/HEIF from iPhone is converted in the browser before compression. SVG is not supported.
對於大批量,建議每批不超過 200–500 個檔案。
拖入資料夾 — 所有圖片將被壓縮，資料夾結構保留於 ZIP。

將圖片拖到這裡

或點擊選擇 · 在頁面任何位置 Ctrl+V / ⌘V

展開詳情收起

Drop, paste (Ctrl+V), or pick images — PNG, JPEG, WebP; HEIC is converted automatically.
Set quality and output format; preview updates live with optional magnifier.
Compress one file or a batch; download individually or as a ZIP.

Are files uploaded?: 不會。全部在瀏覽器中處理，檔案不會上傳到伺服器。
Which formats are supported?: Input: common raster formats plus HEIC/HEIF. Output: PNG, JPEG, or WebP.
How does compression work?: Uses the browser-image-compression library and Canvas in the browser — no server processing.
Can I process many files?: Yes. Add multiple files and download a ZIP archive.