合併 PDF、壓縮文件、去除背景等。瀏覽器本地處理，免費且不上傳檔案。
Chat with curated companions, study buddies, and roleplay characters. No sign-up needed to start.
建立專業 PDF 發票並下載。
縮小 PDF 檔案以便寄信，保持清晰可讀。
Add VAT or GST to a subtotal, or pull tax out of a gross invoice amount.
依序合併多個 PDF，無需上傳檔案。
將 PDF 拆成單頁或範圍，於瀏覽器本地處理。
將 PDF 每頁匯出為 JPG 或 PNG。
Combine images into one PDF—set margins and page layout in seconds.
Rotate pages 90°, 180°, or 270°. Works on one file or many pages at once.
Remove the pages you do not need and download a cleaner document.
Pull selected pages into a new PDF without changing the original.
Stamp text across every page—choose font, opacity, and placement.
Add page numbers with your preferred position and style.
寄送前為 PDF 設定密碼保護。
Build professional quotes your clients can review and approve quickly.
Issue clear payment receipts after every sale, deposit, or milestone.
Find and replace sensitive details before sharing text with AI. Review, then copy.
Shape clearer prompts with structure, examples, and constraints before you hit send.
於本機去除圖片背景，適合商品圖。
Shrink image file size while keeping the result sharp enough to share.
Resize photos to exact dimensions for social, print, or web uploads.
計算毛利與淨利，用於報價。
依收入目標與成本計算合理時薪。
計算專案或業務的損益兩平點。
