Browser’s Pixel Density

about:config, layout.css.devPixelsPerPx, change from -1.0 to something like 1.4 (it’s a string), will change immediately.

command-line switch to chrome.exe, use --force-device-scale-factor="1.2" (for example).

It may help you with larger screens (a.k.a HiDPI displays)
or simply to adjust your display for a better visibility.

Vary: Accept-Encoding

Specify a Vary: Accept-Encoding header


Bugs in some public proxies may lead to compressed versions of your resources being served to users that don’t support compression. Specifying the Vary: Accept-Encoding header instructs the proxy to store both a compressed and uncompressed version of the resource.
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Force Chrome Password Saving By Removing Event Handlers – The JSNinja Way!!!

(function (new_item) {
  document.querySelector('html').style.display="none"; //limit repaint."*"), function (item) {
    new_item = item.cloneNode(true);
    item.parentNode.replaceChild(new_item, item);


a more advanced method is removing the textual event-attribute,
but it is needed to be done AFTER the clone method (or all the attributes will be back… :( )

NodeList.prototype.forEach = Array.prototype.forEach; =;

var attributes, new_element;

  attributes = Object.keys(element.attributes).map(function(key_index){
    return element.attributes[key_index].nodeName

  attributes = attributes.filter(function(attribute){ return 0 === attribute.toLowerCase().indexOf("on") }); /* keep similar to events */

  /* remove event-handlers (dom level 2 and 3) */
  new_element = element.cloneNode(true);
  element.parentNode.replaceChild(new_element, element);

    //element[attribute] = null; //remove reference to ease up memory (override with empty) - event as DOM-handle.  --not needed (clone method is more effictive)
    element.removeAttribute(attribute); //remove event text - event as attribute


at this point the page (unless continuously renewing the event handlers..) is event free, placing the username, password, etc.. and submitting the form (either by submit button, which almost always has a non-ajax alternative, even on full ajax page, to better support older browsers – or executing a javascript code manually from console) will trigger Chrome’s password saving mechanism,
you are not necessarily need to be successfully logged-in,
all it means is that the login-data will be available next time you’ll be visiting the page, and then, naturally use the page without any modification (as it is)…

JavaScript Beautiful Code Part #2/3 – Proper Coding – Avoiding Implicit Type Conversion

icompile.eladkarako.com_i_always_follow_the_proper_dress_codeMaybe only best used @ the end-point compile-script) to minify/obfuscate your code even more..

point mentioning that those *might* gives you a little street credit, but are considered a really bad practice,
and in no-way you should use those in actual live-code, at least, out of common courtesy for your fellow developers :]


  • :( x = !!y;
  • :) x = Boolean(y);

  • :( x = +y;
  • :) x = Number(y);

  • :( x = '' + y;
  • :) x = String(y);

  • :( x = ~s.indexOf('.');
  • :) x = s.indexOf('.') !== -1;

consider reading more about:
JSCS (JavaScript Code Style)
GJSLint (Google JavaScript Linter)

if you see those abominations,
be a pal, and fix it :)

Force Save Password

Allowing the browser’s password-manager to save the login data, meaning user-name and password, even if it is in a SSL (for example https secured websites).

it is done by setting the autocomplete attribute of forms and password field to “on”.

put easily as a bookmark button (known as ‘snippet’).

add this to your bookmark (or favorites) toolbar:

javascript:(function (){var a,b,c,d,e,f,g,h,i;a=b=c=0;d=document.forms;for(f=0;f

You can look at the formatted code for better understanding:
(it is slightly different)

(function () {
    var ca, cea, cs, df, dfe, i, j, x, y;

    function n(i, what) {
        return i + " " + what + ((i == 1) ? "" : "s")
    ca = cea = cs = 0;
    df = document.forms;
    for (i = 0; i < df.length; ++i) {
        x = df[i];
        dfe = x.elements;
        if (x.onsubmit) {
            x.onsubmit = "";
        if (x.attributes["autocomplete"]) {
            x.attributes["autocomplete"].value = "on";
        for (j = 0; j < dfe.length; ++j) {
            y = dfe[j];
            if (y.attributes["autocomplete"]) {
                y.attributes["autocomplete"].value = "on";
    alert("Auto-Complete Has Been Re-Applied To:\n-----------------------------------------------\nForms: " + n(ca, "form") + " .\nForms Elements: " + n(cea, "form element") + " .\nOn-Submits: " + n(cs, "form") + " .");

Example Using PayPal