How to download G-Drive View Only PDFs

[Mak]

Here, you can use this script to download view only pdf file from Google Drive. This script works like a screenshot capturing all pdf pages to bulk of images with high resolution quality and combine it all into one pdf file.

Instruction​

1. Open the PDF from Google Drive,
2. Click Preview,
3. Then on top right page click on three vertical dots menu -> Open in new window,
4. Scroll down pdf to end of content and make sure all of content is loaded,
5. Inspect element your browser( Ctrl+Shift+I ) and go to console tab,
6. Type allow pasting and press ENTER, if you are using Chrome/Firefox and cannot paste any code directly in the console tab,
7. Copy and paste the script given below in console tab,

(async function () {
    let trustedURL;
    if (window.trustedTypes && trustedTypes.createPolicy) {
        const policy = trustedTypes.createPolicy("myPolicy", {
            createScriptURL: (input) => input
        });
        trustedURL = policy.createScriptURL(
            "https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js"
        );
    } else {
        console.warn("Trusted Types are not supported in this browser. Falling back to a plain URL.");
        trustedURL = "https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js";
    }

    function loadScript(src) {
        return new Promise((resolve, reject) => {
            const script = document.createElement("script");
            script.src = src;
            script.onload = resolve;
            script.onerror = reject;
            document.body.appendChild(script);
        });
    }

    await loadScript(trustedURL);

    const { jsPDF } = window.jspdf;

    // A4 portrait, mm units
    const pdf = new jsPDF({
        orientation: "p",
        unit: "mm",
        format: "a4",
        compress: true
    });

    const pageWidth = pdf.internal.pageSize.getWidth();
    const pageHeight = pdf.internal.pageSize.getHeight();

    const images = Array.from(document.querySelectorAll("img"))
        .filter(img => /^blob:/.test(img.src));

    for (let index = 0; index < images.length; index++) {
        const img = images[index];

        // Wait for image to be fully ready
        if (!img.complete) {
            await new Promise((resolve, reject) => {
                img.onload = resolve;
                img.onerror = reject;
            });
        }

        // Use the image's real pixel size, not displayed size
        const sourceWidth = img.naturalWidth || img.width;
        const sourceHeight = img.naturalHeight || img.height;

        // Optional: oversample for better quality when source is CSS-scaled
        const scale = 2;

        const canvas = document.createElement("canvas");
        canvas.width = sourceWidth * scale;
        canvas.height = sourceHeight * scale;

        const ctx = canvas.getContext("2d");
        ctx.scale(scale, scale);
        ctx.imageSmoothingEnabled = true;
        ctx.imageSmoothingQuality = "high";
        ctx.drawImage(img, 0, 0, sourceWidth, sourceHeight);

        // JPEG is usually smaller; PNG can look better for text/line art
        const imgData = canvas.toDataURL("image/jpeg", 1.0);

        // Fit image to page while keeping aspect ratio
        const ratio = Math.min(pageWidth / sourceWidth, pageHeight / sourceHeight);
        const pdfWidth = sourceWidth * ratio;
        const pdfHeight = sourceHeight * ratio;

        const x = (pageWidth - pdfWidth) / 2;
        const y = (pageHeight - pdfHeight) / 2;

        if (index > 0) {
            pdf.addPage();
        }

        pdf.addImage(imgData, "JPEG", x, y, pdfWidth, pdfHeight, undefined, "SLOW");
    }

    pdf.save("download.pdf");
})();

• Wait for script to process and downloading pdf file,
• Fast or slow pdf processing is based on size of the pdf content it self,
• Enjoyy....

 

[The Immortal]

Here, you can use this script to download view only pdf file from Google Drive. This script works like a screenshot capturing all pdf pages to bulk of images with high resolution quality and combine it all into one pdf file.

Instruction​

1. Open the PDF from Google Drive,
2. Click Preview,
3. Then on top right page click on three vertical dots menu -> Open in new window,
4. Scroll down pdf to end of content and make sure all of content is loaded,
5. Inspect element your browser( Ctrl+Shift+I ) and go to console tab,
6. Type allow pasting and press ENTER, if you are using Chrome/Firefox and cannot paste any code directly in the console tab,
7. Copy and paste the script given below in console tab,

(async function () {
    let trustedURL;
    if (window.trustedTypes && trustedTypes.createPolicy) {
        const policy = trustedTypes.createPolicy("myPolicy", {
            createScriptURL: (input) => input
        });
        trustedURL = policy.createScriptURL(
            "https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js"
        );
    } else {
        console.warn("Trusted Types are not supported in this browser. Falling back to a plain URL.");
        trustedURL = "https://cdnjs.cloudflare.com/ajax/libs/jspdf/2.5.1/jspdf.umd.min.js";
    }

    function loadScript(src) {
        return new Promise((resolve, reject) => {
            const script = document.createElement("script");
            script.src = src;
            script.onload = resolve;
            script.onerror = reject;
            document.body.appendChild(script);
        });
    }

    await loadScript(trustedURL);

    const { jsPDF } = window.jspdf;

    // A4 portrait, mm units
    const pdf = new jsPDF({
        orientation: "p",
        unit: "mm",
        format: "a4",
        compress: true
    });

    const pageWidth = pdf.internal.pageSize.getWidth();
    const pageHeight = pdf.internal.pageSize.getHeight();

    const images = Array.from(document.querySelectorAll("img"))
        .filter(img => /^blob:/.test(img.src));

    for (let index = 0; index < images.length; index++) {
        const img = images[index];

        // Wait for image to be fully ready
        if (!img.complete) {
            await new Promise((resolve, reject) => {
                img.onload = resolve;
                img.onerror = reject;
            });
        }

        // Use the image's real pixel size, not displayed size
        const sourceWidth = img.naturalWidth || img.width;
        const sourceHeight = img.naturalHeight || img.height;

        // Optional: oversample for better quality when source is CSS-scaled
        const scale = 2;

        const canvas = document.createElement("canvas");
        canvas.width = sourceWidth * scale;
        canvas.height = sourceHeight * scale;

        const ctx = canvas.getContext("2d");
        ctx.scale(scale, scale);
        ctx.imageSmoothingEnabled = true;
        ctx.imageSmoothingQuality = "high";
        ctx.drawImage(img, 0, 0, sourceWidth, sourceHeight);

        // JPEG is usually smaller; PNG can look better for text/line art
        const imgData = canvas.toDataURL("image/jpeg", 1.0);

        // Fit image to page while keeping aspect ratio
        const ratio = Math.min(pageWidth / sourceWidth, pageHeight / sourceHeight);
        const pdfWidth = sourceWidth * ratio;
        const pdfHeight = sourceHeight * ratio;

        const x = (pageWidth - pdfWidth) / 2;
        const y = (pageHeight - pdfHeight) / 2;

        if (index > 0) {
            pdf.addPage();
        }

        pdf.addImage(imgData, "JPEG", x, y, pdfWidth, pdfHeight, undefined, "SLOW");
    }

    pdf.save("download.pdf");
})();

• Wait for script to process and downloading pdf file,
• Fast or slow pdf processing is based on size of the pdf content it self,
• Enjoyy....