簽名清理

去掉簽名照片中的白紙背景,得到透明 PNG。

在您的瀏覽器中執行。您的檔案不會離開裝置。 瞭解如何驗證

…

使用方法

  1. 1
    新增檔案

    選擇或拖放到這裡。它保留在您的裝置上。

  2. 2
    選擇頁面和選項

    選擇您想要的頁面並調整設定。

  3. 3
    轉換並下載

    點選轉換,檢查結果後下載。不會向伺服器傳送任何內容。

About this tool

Signing a form or PDF needs a clean signature. Sign on white paper with a black or blue pen, take a photo with your phone and add it here. The paper colour, shadows and marks go away and only the signature stays, on a transparent background. Choose black, blue or the original colour. The result is a PNG you can use directly in the "Sign PDF" tool.

When to use it

Sign a white paper, photograph it and remove the paper to get a transparent PNG signature you can place on documents.

Tips

Sign with a dark pen on clean white paper in good light. Adjust the threshold until the strokes are clear.

Privacy

Everything runs in your browser, so your data is not uploaded or stored.

獲得最佳結果的提示

請使用檔案的副本進行操作,並在檢查結果之前保留原件。在提交到入口網站、僱主或機構之前,請開啟輸出並檢視每一頁。如果有大小限制,請確認接收網站如何計算:有些把一千位元組算作 1000 位元組,有些算作 1024 位元組。所有處理都在您裝置上的瀏覽器標籤頁中進行,因此大檔案取決於裝置記憶體,在手機上可能需要更長時間。

要點

常見問題

What kind of photo works best?

Sign with a thick pen on white paper, keep the light even and take a straight photo from close.

What if a shadow stays?

Choose the "Strong" level. If the signature gets too faint, choose "Soft".

Is the background really transparent?

Yes, the result is a PNG with a transparent background.

Where can I use it?

Place it on PDFs with the Sign PDF or Edit PDF tool.

完全免費無費用,無需註冊
檔案保持私密一切都在您的瀏覽器中執行
用您的語言輕鬆使用提供多種語言