Image upload with preview codepen

Last week I showed you how to upload images, resize and crop them using PHP. As I promised, this week I will show some modern and advanced HTML5 image upload techniques that you can use on your site. HTML5 is a big trend and an awesome way of building sexy web applications that your users will just love. HTML5 introduced its File API for representing file objects in web applications, as well as programmaticaly selecting them and accessing their data.

Lets get our hands dirty and begin some coding. For HTML part, we will reuse the form from the last week and add some features to it:. We are not dealing with fancy styles, so there is no CSS involved.

Notice the name of the file input. It allows us to store multiple files as multidimensional array. The real thing here is that the browsers that do not support HTML5 features of FileAPI, will simply ignore multiple attribute and everything will act like in the first tutorial. Try this now, select multiple files and you should see some file info below your form inside output element. This is ideal solution, when browser supports everything.

Let me show you how to check for support in your browser:. If you run this code in Internet Explorer, you will be able to select only one file and alert will pop up that the File APIs are not supported.

This really the interesting part. The JavaScript is veyr similar to before:. There is plenty more stuff you can do with this. I will show you how to show the preview of the image before actual upload happen. This is a very neat feature. For example, your user wants to upload a photo directly from the camera. The idea is to resize the image to some normal resolution before uploading and save time uploading it to server.

This can be achieved with canvas and some of the techniques described above. I hope you learned something new and will use this knowledge on your next project. A passionate web developer with more than 13 years experience in PHP and other web related technology. Owner of Influendo Programming. Enjoys exploring new stuff and possibilities, using new technologies and just having fun developing awesome stuff. Just the thing I was looking for. Excellent tutorial! I love that you used the native code instead of a jQuery.

Thanks for taking the time. Not seen that feature in an uploader before. Thanks for the tutorial! It works, but…. Hi there, you can get it here. I also updated the tutorial and put this link in the text.A variety of front-end code playgrounds have appeared over the years. The majority offer a quick and dirty way to experiment with client-side code and share with others.

In this article, we take a quick look at seven of the best. The best feature: they allow you to test and keep experimental front-end code snippets without the rigmarole of creating files, firing up your IDE or setting up a local server. JSFiddle was one of the earliest code playgrounds and a major influence for all which followed. The prize for the best-looking feature-packed playground goes to CodePen. It offers advanced functionality such as sharing and embedding of Pens, adding external JS and CSS libraries, popular preprocessors, and tons more.

It concentrates on the basics and handles them exceedingly well. It also offers a handy JavaScript console. It looks gorgeous and autoprefixes all your CSS if needed.

Plunker lets you add multiple files, including community generated templates, to kick-start your project. Just like CodePen, with Plunker you can create working demos, also in collaboration with other devs, and share your work.

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I like ScratchPad. Site is also very quick to load, unlike many of the JavaScript alternatives. On CodePen if you accept a permission for one project you accept it for all of them, whereas on Glitch you only accept it for that one project. This also gives you greater control over CORS and other server side things! JSFiddle JSFiddle was one of the earliest code playgrounds and a major influence for all which followed.

image upload with preview codepen

CodePen The prize for the best-looking feature-packed playground goes to CodePen. Plunker Plunker lets you add multiple files, including community generated templates, to kick-start your project.

Other Options There are, of course other options out there. Did we miss your favorite? Tell us about it! Happy coding! Meet the author. Craig Buckler. Craig is a freelance UK web consultant who built his first page for IE2. Since that time he's been advocating standards, accessibility, and best-practice HTML5 techniques.

He's written more than 1, articles for SitePoint and you can find him craigbuckler. Reply to this discussion.Nice Component!. Great Component, it really saved me!! But one question, how to deal with the the state of multiple image upload preview?

Should I put them in an array?

How to Use Images from Github in Codepen

How do you customize this component to only accept certain file extensions like '. New to React, would appreciate any help I can get. Thanks for the snippet. This was super useful for me, I also wrapped it in a react-awesome-slider for better display. Skip to content. Instantly share code, notes, and snippets. Code Revisions 5 Stars 75 Forks Embed What would you like to do?

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Learn more about clone URLs. Download ZIP. React Image Upload with Preview. This comment has been minimized. Sign in to view. Copy link Quote reply. Nice snippet! Thanks a lot. Really helpful, thanks! This was really helpful, thanks!

Nice One!This popular article was updated in July,to reflect the current state of file upload plugins. Comments pertaining to the old article have been deleted. Implementing file uploads with Ajax can be very challenging, especially if you want features like drag and drop support, image previews or progress bars. The following 10 jQuery file upload plugins come with many options, and great user interfaces that will quickly allow you to implement a beautiful file uploader.

FineUploader is a flexible, actively maintained uploader, written in pure JavaScript, but also available as jQuery plugin. Website Source code. The documentation is clean and easy to read, though there are about open issues bugs and feature requests — many of which have been open for years — so be aware that you might be on your own if you encounter problems. Website Source code Further article about Dropzone.

Like Dropzone. Plupload is a great choice if you want to start with the built-in UI out of the box. It offers you fewer options for customization, but several dozen themes with language packages and Flash or Silverlight fallbacks. Formstone is a collection of useful web components, including Upload, a standalone jQuery file upload plugin. As it offers only the basic options for customization and the UI is very simple, getting started should be very easy. This plugin focuses on a great built-in UI, and is based on modular architecture that allows you to easily enable or disable components and to specify custom themes.

As an extra, it offers you a PHP class to handle upload requests. Bootstrap File Input is a Bootstrap 3. It not only allows you to preview uploaded images, but also text, HTML, video, audio, Flash and object files. As it has an example for every feature, implementation should go quickly. This uploader allows you to drag and drop files into an element e. No more and no less. Uploadify is a Flash-based jQuery upload plugin that adds a select button to your website.

In this case, you might be interested in the following two projects that allow you to realize file uploads with completely self-made user interfaces:. These are the best known plugins on the market.Learn foundational programming concepts e. By the end of the course, will create a web page where others can upload their images and apply image filters that you create.

After completing this course, you will be able to: 1.

image upload with preview codepen

Think critically about how to solve a problem using programming; 2. Write JavaScript programs using functions, for loops, and conditional statements; 3. Use HTML to construct a web page with paragraphs, divs, images, links, and lists; 4. Make a web page interactive with JavaScript commands like alert, onClick, onChange, adding input features like an image canvas, button, and slider. Very insightful and helped me learn about the basics of computer science.

Now I'm able to better understand the jargon of computer science and can discuss with others or even review codes. Thank you! My first Coursera course I've ever done and I was very impressed with the platform on which it was presented. My experience was a positive one and I will definitely continue to pursue other courses.

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From the lesson. Upload and Display an Image Convert Image to Grayscale Moving to CodePen Taught By. Susan H. Rodger Professor of the Practice. Robert Duvall Lecturer.

Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

Owen Astrachan Professor of the Practice. Andrew D. Hilton Associate Professor of the Practice.GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together. If nothing happens, download GitHub Desktop and try again. If nothing happens, download Xcode and try again. If nothing happens, download the GitHub extension for Visual Studio and try again.

This is a simple frontend utility to help the file-upload process on your website. It is written in pure JavaScript, has no dependencies, and is a small You can check out the live demo here. For the most part, browsers do a good job of handling image-uploads.

That being said - we find that the ability to show our users a preview of their upload can go a long way in increasing the confidence in their upload.

image upload with preview codepen

Or you can include it through the browser at the bottom of your page. When using the browser version make sure update your target version as needed. The JavaScript looks for a specific set of HTML elements to display the file input, label, image preview, and clear-button. Make sure to populate the custom-file-container element with the uniqueId:. The cachedFileArray property is always an array.

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So if you are only allowing the user to upload a single file, you can access that file at cachedFileArray[0] - otherwise just send the entire array to your backend to handle it normally. Make sure to set multiple on your input if you want to allow the user to select multiple images. For example, if you'd like to limit uploads to only images and pdf's and only allow a single file upload use the following:. If you are supporting a browser like IE11, you'll need a polyfill for fetch and promise at the bottom of your index.

Or, you can install babel-polyfill and import that in the main script of your app. You can read more about babel-polyfill here. In the example folder, we use the external script method. Skip to content. Dismiss Join GitHub today GitHub is home to over 40 million developers working together to host and review code, manage projects, and build software together.You can find amazing tools for improving web forms, ranging from UI kits to advanced jQuery plugins.

But one of the toughest input fields to edit is the upload field. This is a default HTML input element and it lets users upload files from their computer. Restyling the upload field is a massive challenge compared to other form elements. Start Downloading Now! Flat File Upload.

It borrows on the trend of flat designwhich avoids gradients by focusing on single colors — often with a monochromatic color scheme. You can add this file upload design onto any page and get it looking great. So this is also usable with older browsers and should work on mobile, too. Developer Aaron Vanston created this file upload as a replica of the ones we see on larger websites. If you know your way around JavaScript, this can work as a handy template for building your own file upload UI.

If you do any sort of modern web design, then you know you have to go responsive. Mobile users may upload files to the web through these same forms, so utilizing a responsive input field is a great idea. Take a look at this design for an example of a quality mobile-friendly upload field.

Daily dev projects are a great way to sharpen your skills. Drew Vosburg followed this approach to build a sweet upload form hosted freely on CodePen.

But this input field is actually built to support both touch and click, along with drag and drop. That label element is attached to the input field, which is hidden off the page. It works just like a clickable field. It lets you upload photos into a gallery right from your computer.

On your own server, you can use this temporary file to display the picture.


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