display_filename_on_image

with custom position, size, color

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name        display_filename_on_image
// @name:ja        display_filename_on_image
// @name:zh-TW         display_filename_on_image
// @name:zh-CN        display_filename_on_image
// @namespace   display_filename_on_image
// @supportURL  https://github.com/zhuzemin
// @description:zh-CN with custom position, size, color
// @description:zh-TW  with custom position, size, color
// @description:ja with custom position, size, color
// @description with custom position, size, color
// @include     https://*
// @include     http://*
// @version     1.0
// @grant       GM_xmlhttpRequest
// @grant         GM_registerMenuCommand
// @grant         GM_setValue
// @grant         GM_getValue
// @run-at      document-end
// @author      zhuzemin
// @license     Mozilla Public License 2.0; http://www.mozilla.org/MPL/2.0/
// @license     CC Attribution-ShareAlike 4.0 International; http://creativecommons.org/licenses/by-sa/4.0/
// ==/UserScript==
let textPosition={
    bottom_left:`
    
    bottom: 8px;
    left: 16px;
`,
    top_left:`
    
    top: 8px;
    left: 16px;
`,
    top_right:`
    
    top: 8px;
    right: 16px;
`,
    bottom_right:`
    
    bottom: 8px;
    right: 16px;
`,
    centered :`
        
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
`
}
var config = {
    'debug': false,
    'targetImgSize':['260x146','260x289'],
    //'targetImgSize':['16x16','40x40','96x96'],
    'color':'black',
    'size':'100%',
    'position':textPosition.centered
}
var debug = config.debug ? console.log.bind(console)  : function () {
};

  // setting User Preferences
  function setUserPref(varName, defaultVal, menuText, promtText, sep){
    GM_registerMenuCommand(menuText, function() {
      var val = prompt(promtText, GM_getValue(varName, defaultVal));
      if (val === null)  { return; }  // end execution if clicked CANCEL
      // prepare string of variables separated by the separator
      if (sep && val){
        var pat1 = new RegExp('\\s*' + sep + '+\\s*', 'g'); // trim space/s around separator & trim repeated separator
        var pat2 = new RegExp('(?:^' + sep + '+|' + sep + '+$)', 'g'); // trim starting & trailing separator
        //val = val.replace(pat1, sep).replace(pat2, '');
      }
      //val = val.replace(/\s{2,}/g, ' ').trim();    // remove multiple spaces and trim
      GM_setValue(varName, val);
      // Apply changes (immediately if there are no existing highlights, or upon reload to clear the old ones)
      //if(!document.body.querySelector(".THmo")) THmo_doHighlight(document.body);
      //else location.reload();
    });
  }
  
  // prepare UserPrefs
  setUserPref(
  'tags',
  'chinese;',
  'Set Highlight Tags',
  `Set Highlight Tags, split with ";". Example: "mmf threesome; chinese"`,	  
  ','
  );


var init = function () {
    let imgList=document.querySelectorAll('img');
    for(var img of imgList){
        let imgSize=img.width+'x'+img.height;
        debug('imgSize: '+imgSize);
        if(config.targetImgSize.includes(imgSize)){
            if(img.src!=null){
                let filename=img.src.match(/([^/]*)$/)[1];
                debug('filename: '+filename);
                let div=document.createElement('div');
                div.style=`
  position: absolute;
  font-size:`+config.size+`;
  color:`+config.color+`;
  `+config.position;
                debug('div.style: '+div.style);
                div.innerText=filename;
                img.parentElement.style='position: relative!important;';
                img.parentElement.insertBefore(div,null);
            }

        }
    }
}

window.addEventListener('load', init);