圖片處理工具
簡單易用，完全免費
無需安裝 · 即時處理 · 不儲存檔案
為什麼選擇 Optimizer-Nulumia
快速
在我們的伺服器上即時處理，無需等待
安全
下載後立即從伺服器刪除檔案
完全免費
無需付費，無需註冊帳號
多裝置支援
支援電腦、平板和手機
將 JPEG 壓縮至指定大小
Frequently Asked Questions
Are these tools really free?
Yes, all tools on this site are completely free to use with no hidden fees, no account required, and no usage limits. You can process as many files as you need at no cost.
Is my file safe? Do you store uploaded images?
Your files are processed on our servers and deleted immediately after you download the result. We never store, share, or access your images beyond what is needed to complete the processing.
What image formats are supported?
Our tools support JPG, JPEG, PNG, WebP, GIF, BMP, and HEIC image formats. PDF tools accept standard PDF files. Convert between formats using the Convert Image or format-specific tools.
Is there a file size limit?
Single image tools support files up to 50MB per file. The multi-image tool (Images to PDF) accepts up to 200MB in total across all selected files.
Do I need to install any software or create an account?
No. All tools run entirely in your browser session — no software, no plugins, no extensions, and no account are needed. Just open the page and start processing your files.