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PluginsversionCSS (in KB)JS (in KB)Total (in KB)Note : Lower is better
source : WP Charts & Comparisons
UPDATED : jan/2022
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FREE PLUGINS
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Very Simple Contact Form10.90.810.81CSS loaded on each pages
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Simple Basic Contact Form202106191.31.3Custom CSS inserted in the page. No external files are loaded. No JS
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HTML Forms1.3.227.97.9No default CSS so you have to style it by yourself
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Piotnet Forms1.0.239.596.7916.38
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Contact Form 75.5.32.6733.9336.6JS & CSS loaded on each pages
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Fluent Form4.2.2126.1517.9544.1
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FormCraft1.2.554.8116.0370.84CSS loaded on each pages
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HappyForms1.9.2063.122.6185.71
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Formidable Form Builder5.0.1660.0530.8290.87By default the CSS file is loaded on each pages but it can be changed in the settings
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Gutenberg Forms2.2.538.4851.5890.06JS & CSS loaded on each pages
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WPForms Lite1.7.1.221.9697.39119.35The CSS can be reduced in the settings
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WS Form LITE1.8.154133.91133.91No style by default but you can choose their 'skin' (+33 KB CSS)
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Everest Forms1.7.128.05110.66138.71CSS loaded on each pages
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Formality1.4.285.2372.28157.51Loads wp-polyfill, i18n, hooks JS files
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Kali Forms2.3.13120.79136.17256.96Loads wp-polyfill, i18n, hooks JS files
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Flo Forms1.0.4016.97264.14281.11
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Form Maker 1.14.7141.56152293.56Loads core.min.js, effect.min.js, effect-shake.min.js
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Bit Form1.4.15.111.27317.13328.4
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Forminator 1.15.9167.56244.81412.37
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Ninja Forms Contact Form3.6.7128.03313.85441.88
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weForms1.6.998.28354.03452.31
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Caldera Forms1.9.6112.6447.66560.26
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PREMIUM PLUGINS
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Fluent Forms Pro4.2.0 26.1517.9544.1
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Piotnet Forms Pro1.0.3724.6919.3644.05Don't activate the Pro version if you don't use any Pro feature
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WPforms1.6.3.138.9888.45127.43
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HappyForms Pro1.19.0124.1223.32147.44also loads some jquery files from WP (+22.38KB)
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Gravity Forms2.4.20.5113.6236.12149.74JS is loaded only when the Ajax mode is activated
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Green Forms1.3162.75101.33164.08JS & CSS loaded on each pages
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Bit Form Pro1.0.65.65239.61245.26
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WS Form PRO1.7.9665.83229.02294.85The CSS can be reduced in the settings
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ARForms4.2.1100.28343.33443.61
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eForm4.14.1397.65324.5722.15
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OTHER PLUGINS
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Metform1.3.6139.51328.71468.22Addon for Elementor- JS & CSS loaded on each pages
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Powerform (OXYPOWERPACK)2.0.26.826.82Paid addon for OXYGEN
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Advanced Forms1.7.01.733.495.22Requires ACF PRO v5 - TOTAL with ACF : 382.65 KB - CSS loaded on each pages
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