Edit C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\app1\index.html

<!doctype html><html><head><meta charset="utf-8"/><meta id="viewport" name="viewport" content="width=device-width,initial-scale=1"/><meta name="Description" content="Adobe Acrobat"/><meta name="theme-color" content="#3367D6"/><meta name="application_version" content="3.64.0"/><meta name="server_env" content="localdev"/><link rel="preload" href="fonts/AdobeCleanUX-Regular.otf" as="font" type="font/otf" crossorigin/><link rel="preload" href="fonts/AdobeCleanUX-Medium.otf" as="font" type="font/otf" crossorigin/><link rel="preload" href="fonts/AdobeCleanUX-Bold.otf" as="font" type="font/otf" crossorigin/><link rel="preload" href="fonts/AdobeCleanUX-Light.otf" as="font" type="font/otf" crossorigin/><link rel="preload" href="fonts/AdobeCleanUX-It.otf" as="font" type="font/otf" crossorigin/><link rel="preload" href="fonts/AdobeCleanUX-LightIt.otf" as="font" type="font/otf" crossorigin/><link rel="preload" href="fonts/AdobeCleanUX-BoldIt.otf" as="font" type="font/otf" crossorigin/><link rel="preload" href="fonts/AdobeCleanUX-Mediumit.otf" as="font" type="font/otf" crossorigin/><link rel="preload" href="fonts/AdobeClean-ExtraBold.otf" as="font" type="font/otf" crossorigin/><title>Adobe Acrobat</title><script>console.log("console log start " + performance.now());</script><style>@font-face {
            font-family: "Adobe Clean";
            src: url(fonts/AdobeCleanUX-Medium.otf);
            font-weight: bolder;
        }

@font-face {
            font-family: "Adobe Clean";
            src: url(fonts/AdobeCleanUX-Mediumit.otf);
            font-style: italic;
            font-weight: bolder;
        }

@font-face {
            font-family: "Adobe Clean";
            src: url(fonts/AdobeCleanUX-Bold.otf);
            font-weight: bold;
        }
        @font-face {
            font-family: "Adobe Clean";
            src: url(fonts/AdobeClean-ExtraBold.otf);
            font-weight: 800;
        }
        @font-face {
            font-family: "Adobe Clean";
            src: url(fonts/AdobeCleanUX-BoldIt.otf);
            font-weight: bold;
            font-style: italic;
        }

@font-face {
            font-family: "Adobe Clean";
            src: url(fonts/AdobeCleanUX-Light.otf);
            font-weight: lighter;
        }
        @font-face {
            font-family: "Adobe Clean";
            src: url(fonts/AdobeCleanUX-LightIt.otf);
            font-style: italic;
            font-weight: lighter;
        }

@font-face {
            font-family: "Adobe Clean";
            src: url(fonts/AdobeCleanUX-It.otf);
            font-style: italic;
            font-weight: normal;
        }
        @font-face {
            font-family: "Adobe Clean";
            src: url(fonts/AdobeCleanUX-Regular.otf);
            font-weight: normal;
        }
        /* [papariha] - ADC-4470052
         * Adding SimSun font in font-family to cover GB18030 characters. 
         * Marking important for input and textarea so that these fonts takes precedence.
         * Don't force font on jot-editor, Jot-editor have its own font-family and Adobe-clean won't be part of it
         */
        html *:not(div.jot-editor *) {
            font-family: Adobe Clean,adobe-clean-ux,adobe-clean,Source Sans Pro,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif,SimSun;
        }
        input, textarea {
            font-family: Adobe Clean,adobe-clean-ux,adobe-clean,Source Sans Pro,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif,SimSun !important;
        }</style><link href="/__VERSION__/dc-core.js" as="script" rel="preload"><link href="/__VERSION__/dc-extras.js" as="script" rel="preload"><link href="/__VERSION__/dc-spectrum-v3-core.js" as="script" rel="preload"><link href="/__VERSION__/dc-spectrum-v3-core.css" as="style" rel="preload"><script id="adobe_dc_sdk_launcher" data-location_id="root" src="/dc-app-launcher.js"></script></head><body style="overflow:hidden; margin:0; user-select: none;"><div id="root" style="height: 100%"></div></body></html>

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