#4.75 / 8 rate

Web Injector

1,000 users

2019-03-08

Trevor Reed

This extension is being deprecated because it doesn't follow Chrome extension best practices.

Extension Information

5 star

86%

4 star

3 star

14%

2 star

1 star

Supported Languages

Permissions

Description

Inject JavaScript code into every page (e.g. to help with debugging). For example, make your own wrapper for console logging.

Web Injector injects whatever custom JavaScript code you want into every web page. You can write an advanced wrapper for console logging; include utility functions for debugging; hide elements by class or id; or any other creative thing you can think of. I hope you enjoy this extension, and if you have ideas for improvement, please share!

Reviews

Erich Erstu

Simple and rather easy to work with but unfortunately it has a bug that prevents the script from being saved. Sometimes the script does not save but it does when you click the beautify button.

Ajoe Alex

excellent.Just What I wanted. could be better to have a button to start injecting or stop injecting.

Muhammet Ali Petek

Excellent. There are a lot of extensions do injection for domain. But this injects to all pages, every page. Awesome. Here is my darkener, I just dont want to see white anymore. function rgb2hsl(rgbArr){ var r1 = rgbArr[0] / 255; var g1 = rgbArr[1] / 255; var b1 = rgbArr[2] / 255; var alpha = rgbArr[3] ? rgbArr[3] : 1; var maxColor = Math.max(r1,g1,b1); var minColor = Math.min(r1,g1,b1); //Calculate L: var L = (maxColor + minColor) / 2 ; var S = 0; var H = 0; if(maxColor != minColor){ //Calculate S: if(L < 0.5){ S = (maxColor - minColor) / (maxColor + minColor); }else{ S = (maxColor - minColor) / (2.0 - maxColor - minColor); } //Calculate H: if(r1 == maxColor){ H = (g1-b1) / (maxColor - minColor); }else if(g1 == maxColor){ H = 2.0 + (b1 - r1) / (maxColor - minColor); }else{ H = 4.0 + (r1 - g1) / (maxColor - minColor); } } L = L * 100; S = S * 100; H = H * 60; if(H<0){ H += 360; } var result = [H, S, L, alpha]; return result; } function hslToRgb(h, s, l, a) { var r, g, b; if (s == 0) { r = g = b = l; // achromatic } else { function hue2rgb(p, q, t) { if (t < 0) t += 1; if (t > 1) t -= 1; if (t < 1/6) return p + (q - p) * 6 * t; if (t < 1/2) return q; if (t < 2/3) return p + (q - p) * (2/3 - t) * 6; return p; } var q = l < 0.5 ? l * (1 + s) : l + s - l * s; var p = 2 * l - q; r = hue2rgb(p, q, h + 1/3); g = hue2rgb(p, q, h); b = hue2rgb(p, q, h - 1/3); } return [ r * 255, g * 255, b * 255, a]; } function hexToRGB(hex, alpha) { var r, g, b; if(hex.length < 5){ r = parseInt(hex.slice(1, 2), 16), g = parseInt(hex.slice(2, 3), 16), b = parseInt(hex.slice(3, 4), 16); }else{ r = parseInt(hex.slice(1, 3), 16), g = parseInt(hex.slice(3, 5), 16), b = parseInt(hex.slice(5, 7), 16); } if (alpha) { return "rgba(" + r + ", " + g + ", " + b + ", " + alpha + ")"; } else { return "rgb(" + r + ", " + g + ", " + b + ")"; } } function parseRGB(str){ return str.replace(/[^\d,]/g, '').split(','); } function bgcToHSL(bgc, type){ var rgba, hsla; if(type == 'hex'){ rgba = hexToRGB(bgc,1); rgba = parseRGB(bgc); if(rgba.length == 3) rgba.push(1); } if(type == 'rgb'){ rgba = parseRGB(bgc); if(rgba.length == 3) rgba.push(1); } if(type == 'hsl'){ hsla = parseRGB(bgc); if(hsla.length == 3) hsla.push(1); } hsla = rgb2hsl(rgba); hsla.forEach((e,i)=>{hsla[i] = Math.round(e);}); return hsla; } function _darkit(e){ if(e.getAttribute('data-darkened')) return; e.setAttribute('data-darkened', true); var style = window.getComputedStyle(e); var bgc = style.getPropertyValue('background-color'); var bgct; var clr = style.getPropertyValue('color'); var bg = style.getPropertyValue('background-image'); if(bgc == '' || bgc == 'initial' || bgc == 'inherit' || bgc == 'transparent') return if(bg.indexOf('gradient') !== -1) console.log(bg); if(bgc.indexOf('rgb') !== -1) bgct = 'rgb'; if(bgc.indexOf('hsl') !== -1) bgct = 'hsl'; if(bgc.indexOf('#') !== -1) bgct = 'hex'; var bgHsl = bgcToHSL(bgc, bgct); //var newRgb = hslToRgb(bgHsl[0], bgHsl[1], bgHsl[2], bgHsl[3]); var lightness = bgHsl[2] > 40 ? bgHsl[2] - 20 : bgHsl[2] / 2; var newBgc = `hsla(${bgHsl[0]}, ${bgHsl[1]}%, ${lightness}%, ${bgHsl[3]})!important`; //console.log(newBgc); // e.style.background = 'none'; var existingStyle = e.getAttribute('style'); e.setAttribute('style', existingStyle + ';background-color:' + newBgc); //e.style.color = '#ccc'; //e.style.borderColor = '#555'; } _darkit(document.querySelector('body')); document.querySelectorAll('body *').forEach(e=>{ _darkit(e); }); document.addEventListener('DOMNodeInserted', (e)=>{ document.querySelectorAll('body *').forEach(e=>{ _darkit(e); }); });