clientpdf/extract-images.html at main · abyworkings-coder/clientpdf · GitHub

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    <h1>Open DevTools.<br />Pull the images out.<br />Watch nothing get sent anywhere.</h1>
    <p class="lede">
      Drop a PDF that has photos or scanned pages embedded in it — this
      reads each page's embedded JPEG images and hands them back as
      standalone .jpg files, one at a time or all zipped together.
      Entirely inside this tab. Zero network requests after the page
      loads, same rule as every other tool here. Check the Network tab
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        <h3>No accounts</h3>
        <p>No signup, no email, no watermark. Use it and close the tab.</p>
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      <div class="proof-item">
        <h3>Byte-identical extraction</h3>
        <p>JPEG images are pulled out of the PDF's raw stream data as-is — no re-encoding, no quality loss.</p>
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        <h2>Need to put images back into a PDF? Also live.</h2>
        <p><a href="./images-to-pdf.html">Images to PDF</a> does the reverse. Leave your email and we'll let you know about a Pro batch mode, including support for non-JPEG embedded images.</p>
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<section class="about">
  <h2>Pulling the original image files back out</h2>
  <p>Extract Images walks a PDF's page resources looking for JPEG-filtered image streams (<code>/DCTDecode</code>) and pulls their raw bytes back out as standalone <code>.jpg</code> files — since a JPEG stream inside a PDF is already a byte-identical JPEG file, there's no re-encoding or quality loss involved, unlike Compress. Images using other encodings (raw Flate-compressed pixel data, JPEG2000, CCITT fax) are reported as skipped rather than silently dropped or falsely claimed as extracted, so the count you see always matches what actually downloaded.</p>
  <p>Pulling images from a PDF with dozens of embedded photos, or a scanned document where every page <em>is</em> an image, means holding a lot of decoded image data in memory at once before it's zipped up. <a href="./guide-large-file-freeze.html">If that makes the tab sluggish on a large source file, this explains why.</a></p>
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