1. Contact Form 7 WordPress Plugin

URL: https://wordpress.org/plugins/contact-form-7/

Contact form 7 is very popular contact form wordpress plugin with more than 20 million downloads at a moment and keep growing.

Contact Form 7 can manage multiple contact forms, plus you can customize the form and the mail contents flexibly with simple markup. The form supports Ajax-powered submitting, CAPTCHA, Akismet spam filtering and so on.

2. Contact Form wordpress plugin

URL: https://wordpress.org/plugins/contact-form-plugin/

This plugin name too general but it ‘s usable.

The Contact Form plugin allows you to implement a feedback form to a web-page or a post in no time. It is an extremely easy form, that doesn’t require any additional settings, though there are some available options. All you need is just to activate the plugin and insert the shortcode [ bestwebsoft_contact_form ] into the text. There is also a premium version of the plugin with more useful features available.

3. Fast Secure Contact Form WordPress Plugin

URL: https://wordpress.org/plugins/si-contact-form/

Something nice for people who want the most security contact form plugin.

Easily create and add forms to WordPress. Fields are easy to add, remove, and re-order. The contact form will let the user send emails to a site’s admin, and also send a meeting request to talk over phone or video.

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In this tutorial we will show you 3 wordpress plugins what can help you reduce the image size but still keep a very good image quality. It will help to speed up the image load and page load.

1. EWWW Image Optimizer

Download: https://wordpress.org/plugins/ewww-image-optimizer/

This is my No. 1 suggestion since it ‘s very easy to use and save time. Even though you got a lot of old images what need to reduce size, it still help you solve that with Bulk feature. Check this screen

The EWWW Image Optimizer is a WordPress plugin that will automatically optimize your images as you upload them to your blog. It can optimize the images that you have already uploaded, convert your images automatically to the file format that will produce the smallest image size (make sure you read the WARNINGS), and optionally apply lossy reductions for PNG and JPG images.

2. WP Smush

Download: https://wordpress.org/plugins/wp-smushit/

WP Smush strips hidden, bulky information from your images, reducing the file size without losing quality. The faster your site loads, the more Google, Bing, Yahoo and other search engines will like it.

Look at this video and you will how it do

3. Kraken Image Optimizer

Download: https://wordpress.org/plugins/kraken-image-optimizer/

This plugin allows you to optimize your WordPress images through the Kraken API, the world’s most advanced image optimization solution.

This plugin allows you to optimize new and existing WordPress image uploads through Kraken Image Optimizer’s API. Both lossless and intelligent lossy optimization modes are supported. Supported filetypes are JPEG, PNG and GIF. Maximum filesize limit is 16 MB.

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It ‘s PDF.js Viewer Shortcode: https://wordpress.org/plugins/pdfjs-viewer-shortcode/

It ‘s quite easy to use, just need to enter this shortcode

Paramaters

• url (required): direct url to pdf file
• viewer_width (optional): width of the viewer (default: 100%)
• viewer_height (optional): height of the viewer (default: 1360px)
• fullscreen (optional): true/false, displays fullscreen link above viewer (default: true)
• download (optional): true/false, enables or disables download button (default: true)
• print (optional): true/false, enables or disables print button (default: true)
• openfile (optional): true/false, enables or disables open file button (default: false)

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First of all, you can download and install here: https://wordpress.org/plugins/crayon-syntax-highlighter/

A Syntax Highlighter built in PHP and jQuery that supports customizable languages and themes. It can highlight from a URL, a local file or WordPress post text. Crayon makes it easy to manage Language files and define custom language elements with regular expressions. It also supports some neat features like:

• Integrated Theme Editor!
• Tag Editor in both Visual & HTML editors
• Toggled plain code
• Toggled line numbers
• Copy/paste code
• Open code in a new window (popup)
• Line wrapping
• Code expanding
• Minimizing
• bbPress 2 support
• Converting legacy code in blog posts/comments to <pre>
• Remote request caching
• Mixed Language Highlighting in a single Crayon
• Mini Tags like [php][/php]
• Inline Tags floating in sentences
• Crayons in comments
• `Backquotes` become code
• pre tag support, option to use setting-value in the class attribute
• Valid HTML 5 markup
• Visual & HTML editor compatible
• Mobile/touchscreen device detection
• Mouse event interaction (showing plain code on double click, toolbar on mouseover)
• Tab sizes
• Code title
• Toggled toolbar
• Retina buttons
• Striped lines
• Line marking (for important lines)
• Line ranges (showing only parts of the code)
• Starting line number (default is 1)
• Local directory to search for local files
• File extension detection
• Live Preview in settings
• Dimensions, margins, alignment, font-size, line-height, float
• Extensive error logging

The code highlight is very easy to use in back end with the toobar icon and window

And the highlight code will be display in front end like this

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The first way is easy and not a good way to do in big data. We will look at the second one what save time and server resource. We just need to execute these sql query

If you want to keep the row with the lowest id value

Let ‘s use one of these SQL

DELETE n1 FROM names n1, names n2 WHERE n1.id > n2.id AND n1.name = n2.name

or

DELETE FROM NAMES
WHERE id NOT IN (SELECT *
FROM (SELECT MIN(n.id)
FROM NAMES n
GROUP BY n.name) x)

If you want the id value that is the highest

DELETE n1 FROM names n1, names n2 WHERE n1.id < n2.id AND n1.name = n2.name

or

DELETE FROM NAMES
WHERE id NOT IN (SELECT *
FROM (SELECT MIN(n.id)
FROM NAMES n
GROUP BY n.name) x)

Now time to enjoy the result. Check it out and tell us if you meet any problem.

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Demo: http://demo.curlythemes.com/qr/qr-codes-demo

Download Free Wordpress QR Code Plugin with this form

Simple QR Codes is a beautiful QR codes plugin that displays 9 types of qr codes via shortcodes. Add a simple but very useful feature to your website with this stylish plugin. You can use them anywhere in the website, to display nice short information about things that your visitors can save easily on their mobile devices. You can set 9 types of QR codes with any size and any alignment.

Features:

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WordPress Plugin Idea

Before building any plugin, we should site down and write all of our requirements to save time and do the right way in coding time. In my simple wordpress plugin idea include:

Now, let ‘s go with our first wordpress plugin

WordPress Plugin Basic File Structure

As the minimum requirements, wordpress plugin only need one php file in folder /wp-content/plugins/ but no one do thing like that since it ‘s very difficult to maintain. So even though we do a simple wordpress plugin, let ‘s learn for future to build a complex plugin. So, the basic wordpress plugin file structure include:

• A folder in /wp-content/plugins/: let ‘s create it is simple-shortcode
• A php file in plugin folder /wp-content/plugins/simple-shortcode with the same name as plugin folder, so it should be /wp-content/plugins/simple-shortcode/simple-shortcode.php

wordpress plugin file structure

WordPress Plugin Header

Somehow WordPress need to know the basic information of your wordpress plugin to display in control panel, kind of detail of a plugin. And here is all that needs to be in your plugin file for WordPress to recognize it once uploaded. Let ‘s add it as first line in file simple-shortcode.php

<?php
/*
Plugin Name: My Custom Functions
*/

See how easy that is? At this point you have a plugin that you can activate in your WordPress plugins area. Of course our plugin doesn’t actually do anything yet but the point is you have laid the foundation of your very own plugin and it was super easy.

Now there are other elements that you can include in this header. Things like a description, version, author, etc. You can read more about those here: http://codex.wordpress.org /Writing_a_Plugin #File_Headers

That ‘s all to get a new wordpress plugin, let visit your wordpress plugin admin and activate it. Time to build the main function

Capture wordpress hooks

Keep in mind that to get our plugin optimize, we only execute our action code via wordpress shortcode except some special case. For the most case, we will capture the init hook of wordpress. Here is the code.

add_action( 'init', 'simple_shortcode_register_shortcodes');

See, we call function simple_shortcode_register_shortcodes when the wordpress system init and we need to define this function.

function simple_shortcode_register_shortcodes()
{
add_shortcode('my-first-shortcode', 'simple_shortcode_my_first_shortcode');
}

Again we add a shortcode with tag my-first-shortcode and defined by function simple_shortcode_my_first_shortcode. One more time we need to define this function:

function simple_shortcode_my_first_shortcode($atts, $content){
extract(shortcode_atts(array(
'lastname' => ''
), $atts));
return "<strong>{$content} {$lastname}";
}

Ok, it ‘s quite simple, for more detail how to define this function you can look at wordpress API https://codex.wordpress.org/Function_Reference/add_shortcode . And I guess, you will know where to search for WordPress API :-).

The next step, let ‘s test it. Create a new post with this detail:

Now, view it on front-end to see the magic.

And here is the bonus for you if you need more advance about wordpress plugin https://codex.wordpress.org/Writing_a_Plugin

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