{
  "id": 19,
  "slug": "watermark",
  "type": "tool",
  "title": "Watermark PDF — Free, In Browser",
  "summary": "Add a diagonal text watermark to every page. 100% in your browser — free, no sign-up, no upload.",
  "category_slug": "pdf",
  "category_name": "PDF Tools",
  "locale": "en",
  "seo": {
    "description": "Free online PDF watermark. Stamp diagonal text on every page with adjustable opacity. In-browser, private."
  },
  "data": {
    "howto": [
      {
        "step": 1,
        "text": "Choose your PDF."
      },
      {
        "step": 2,
        "text": "Type watermark text and set opacity."
      },
      {
        "step": 3,
        "text": "Download the watermarked PDF."
      }
    ],
    "sections": [
      {
        "body": "Add a diagonal text watermark (e.g. CONFIDENTIAL or DRAFT) across all pages, with adjustable opacity and size. Runs in your browser.",
        "heading": "Watermark every page"
      }
    ],
    "toolKind": "client",
    "clientApp": "pdf-watermark"
  },
  "updated_at": "2026-06-27T04:44:29.286Z",
  "faq": [
    {
      "q": "Is it free?",
      "a": "Yes, completely free with no file limits."
    },
    {
      "q": "Is my data private?",
      "a": "Yes — this tool runs entirely in your browser. Your files and text are never uploaded."
    }
  ],
  "related": [
    {
      "slug": "pdf-to-jpg",
      "title": "PDF to JPG — Free, In Browser",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "pdf-to-text",
      "title": "PDF to Text — Free, In Browser",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "compress",
      "title": "Compress PDF — Free, No Limits",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "remove-blank",
      "title": "Remove Blank Pages from PDF — Free",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "flatten",
      "title": "Flatten PDF — Free, In Browser",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "page-numbers",
      "title": "Add Page Numbers to PDF — Free",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "bates",
      "title": "Bates Numbering — Free Online (Legal)",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "sign",
      "title": "Sign PDF — Free, Unlimited Signatures",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "edit",
      "title": "PDF Editor — Free, In Your Browser",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "jpg-to-pdf",
      "title": "JPG to PDF — Free Image to PDF",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "rotate",
      "title": "Rotate PDF — Free, No Limits",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "split",
      "title": "Split PDF — Extract Pages Free",
      "type": "tool",
      "category_slug": "pdf"
    },
    {
      "slug": "merge",
      "title": "Merge PDF — Free, No Limits",
      "type": "tool",
      "category_slug": "pdf"
    }
  ]
}