pdfty.

PDF 흑백 변환

인쇄 비용 절감을 위해 컬러 PDF를 흑백으로 변환

pdfty's grayscale tool lets you grayscale a PDF in your browser. Free online tool. No installation, no signup. Files are uploaded over HTTPS and permanently deleted within 1 hour.

Built on audited open-source libraries. Output keeps the original quality. Files up to 20 MB and 50 pages on the free plan.

Files are processed on our server and permanently deleted within 1 hour. We do not back them up, do not train AI models on your data, and do not share with third parties.

이용 방법

  1. 1

    Upload your file

    Drag and drop the PDF or click to select.

  2. 2

    Choose options

    Pick any settings the tool exposes (defaults are sensible).

  3. 3

    Process

    We run the operation server-side. Usually a few seconds.

  4. 4

    Download

    Save the result.

  5. 5

    Files auto-delete

    All uploaded files and outputs are removed within 1 hour.

자주 묻는 질문

Yes — up to 10 operations per day, files up to 20 MB and 50 pages, no watermark.

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