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CSS

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HTML 

              
                <header class="page-header">
  HTML5 web приложение с фильтрами как в Instagram
</header>

<div id="photo-box" class="photo-box">
  <div class="label">
    <img src="https://ucarecdn.com/c7aeb97e-a73f-40bb-8966-45d692d6dde1/upload.png" alt="Upload icon" width="100" height="100"/>
    <div>Нажмите или перетащите сюда изображение...</div>
  </div>
  <div id="loader" class="loader"></div>
</div>

<div class="download">
  <a href="#" id="download-link" class="download-link">
    Скачать изображение
  </a>
</div>

<input type="file" id="file-picker" class="file-picker"/>

<div id="filters" class="filters">
  <div class="preset preset_original" data-preset="original">
    <span class="preset-name">Original</span>
  </div>
  <div class="preset preset_vintage" data-preset="vintage">
    <span class="preset-name">Vintage</span>
  </div>
  <div class="preset preset_lomo" data-preset="lomo" class="">
    <span class="preset-name">Lomo</span>
  </div>
  <div class="preset preset_clarity" data-preset="clarity" class="">
    <span class="preset-name">Clarity</span>
  </div>
  <div class="preset preset_sinCity" data-preset="sinCity">
    <span class="preset-name">Sin City</span>
  </div>
  <div class="preset preset_sunrise" data-preset="sunrise">
    <span class="preset-name">Sunrise</span>
  </div>
  <div class="preset preset_crossProcess" data-preset="crossProcess">
    <span class="preset-name">Cross Process</span>
  </div>
  <div class="preset preset_orangePeel" data-preset="orangePeel">
    <span class="preset-name">Orange Peel</span>
  </div>
  <div class="preset preset_love" data-preset="love" class="Active">
    <span class="preset-name">Love</span>
  </div>
  <div class="preset preset_grungy" data-preset="grungy">
    <span class="preset-name">Grungy</span>
  </div>
  <div class="preset preset_jarques" data-preset="jarques">
    <span class="preset-name">Jarques</span>
  </div>
  <div class="preset preset_pinhole" data-preset="pinhole">
    <span class="preset-name">Pinhole</span>
  </div>
  <div class="preset preset_oldBoot" data-preset="oldBoot">
    <span class="preset-name">Old Boot</span>
  </div>
  <div class="preset preset_glowingSun" data-preset="glowingSun">
    <span class="preset-name">Glowing Sun</span>
  </div>
  <div class="preset preset_hazyDays" data-preset="hazyDays">
    <span class="preset-name">Hazy Days</span>
  </div>
  <div class="preset preset_herMajesty" data-preset="herMajesty">
    <span class="preset-name">Her Majesty</span>
  </div>
  <div class="preset preset_nostalgia" data-preset="nostalgia">
    <span class="preset-name">Nostalgia</span>
  </div>
  <div class="preset preset_hemingway" data-preset="hemingway">
    <span class="preset-name">Hemingway</span>
  </div>
  <div class="preset preset_concentrate" data-preset="concentrate">
    <span class="preset-name">Concentrate</span>
  </div>
</div>

<footer class="page-footer">
  Статья: <a href="https://nikitakiselev.ru/article/html5-web-prilozhenie-s-filtrami-kak-v-instagram" target="_blank">HTML5 web приложение с фильтрами как в Instagram</a>
  
  <script type="text/javascript" src="//yastatic.net/es5-shims/0.0.2/es5-shims.min.js" charset="utf-8"></script>
<script type="text/javascript" src="//yastatic.net/share2/share.js" charset="utf-8"></script>
<div class="ya-share2" data-services="vkontakte,facebook,odnoklassniki,moimir,gplus,twitter,pocket,viber,whatsapp" data-size="s"></div>
</footer>
!

CSS 

              
                @import 'https://fonts.googleapis.com/css?family=Roboto+Condensed';

body {
  font-family: 'Roboto Condensed', sans-serif;
  background: black;
  color: white;
}

.page-header {
  text-align: center;
  font-size: 30px;
  margin: 20px 0;
}

.page-footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: #2b2b2b;
  padding: 10px 0;
  text-align: center;
  
  a {
    color: #0099cc;
  }
}

.photo-box {
  position: relative;
  width: 500px;
  height: 500px;
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  
  .photo {
    display: block;
    border-radius: 10px;
    transform: scale(1);
    transition:
      transform .3s,
      width .3s, height .3s;

    &.dragenter {
      transform: scale(.95);
    }
  }
  
  .loader {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background: rgba(0,0,0,.6);
    display: none;
    z-index: 10;

    &:before {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      text-align: center;
      width: 100%;
      content: 'Обработка...';
      color: white;
      display: block;
    }
  }
  
  .label {
    position: absolute;
    width: 100%;
    left: 0;
    top: 50%;
    text-align: center;
    pointer-events: none;
    user-select: none;
    
    img {
      display: inline-block;
    }
  }
}

.file-picker {
  display: none;
}

.filters {
  opacity: 0;
  visibility: hidden;
  width: 700px;
  margin: 0 auto;
  white-space: nowrap;
  overflow-x: auto;
  position: relative;
  transition: opacity .8s;
  
  &.active {
    opacity: 1;
    visibility: visible;
  }
  
  &::-webkit-scrollbar {
    height: 4px;
    background-color: rgba(100,100,100,0.2);
    border-radius: 2px;
  }

  &::-webkit-scrollbar-thumb {
    border-radius: 1px;
    background: #fff;
    box-shadow: inset 0 0 6px rgba(0,0,0,0.5);
    cursor: pointer;
  }

  &::-webkit-scrollbar-thumb:window-inactive {
    background: #aaa;
  }
  
  .preset {
    position: relative;
    display: inline-block;
    cursor: pointer;
    color: black;
    background: url(https://ucarecdn.com/8b971494-c589-4af1-ba29-4e5971dc6f18/presets.png) no-repeat top left;
    margin: 10px;
    width: 100px;
    height: 100px;
    text-align: center;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
    
    &.active {
      .preset-name {
        background: rgba(255, 99, 71, 0.61);;
      }
    }
    
    .preset-name {
      display: block;
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      color: white;
      background: rgba(0, 0, 0, .6);
    }
  }
  
  .preset.preset_clarity { background-position: 0 0; } 
  .preset.preset_concentrate { background-position: -100px 0; } 
  .preset.preset_crossProcess { background-position: -200px 0; } 
  .preset.preset_glowingSun { background-position: -300px 0; } 
  .preset.preset_grungy { background-position: -400px 0; } 
  .preset.preset_hazyDays { background-position: -500px 0; } 
  .preset.preset_hemingway { background-position: -600px 0; } 
  .preset.preset_herMajesty { background-position: -700px 0; } 
  .preset.preset_jarques { background-position: -800px 0; } 
  .preset.preset_lomo { background-position: -900px 0; } 
  .preset.preset_love { background-position: -1000px 0; } 
  .preset.preset_nostalgia { background-position: -1100px 0; } 
  .preset.preset_oldBoot { background-position: -1200px 0; } 
  .preset.preset_orangePeel { background-position: -1300px 0; } 
  .preset.preset_original { background-position: -1400px 0; } 
  .preset.preset_pinhole { background-position: -1500px 0; } 
  .preset.preset_sinCity { background-position: -1600px 0; } 
  .preset.preset_sunrise { background-position: -1700px 0; } 
  .preset.preset_vintage { background-position: -1800px 0; }
}

.download {
  text-align: center;
  margin-bottom: 10px;
  height: 40px;
  
  .download-link {
    opacity: 0;
    visibility: hidden;
    display: inline-block;
    color: white;
    text-decoration: none;
    background: #0099cc;
    padding: 0 10px;
    border-radius: 4px;
    height: 40px;
    line-height: 40px;
    transition: opacity .4s;
    
    &.show {
      opacity: 1;
      visibility: visible;
    }
  }
}

.ya-share2 {
  display: inline-block;
  margin-left: 30px;
}
!

JS 

              
                // cache selectors
let $loader = $('#loader'),
  $filters = $('#filters'),
  $photoBox = $('#photo-box'),
  $filePicker = $('#file-picker'),
  $label = $photoBox.find('.label'),
  $downloadLink = $('#download-link');

let currentPreset = 'original',
    uploadedFileName = 'image';

// create image
let image = new Image();
let maxWidth = $photoBox.width(),
  maxHeight = $photoBox.height(),
  imageWidth = maxWidth,
  imageHeight = maxHeight;

image.onload = function() {
  let width = this.width,
    height = this.height;

  if (width >= maxWidth || height >= maxHeight) {
    if (width > height) {
      let ratio = width / maxWidth;
      imageWidth = maxWidth;
      imageHeight = height / ratio;
    } else {
      let ratio = height / maxHeight;
      imageHeight = maxHeight;
      imageWidth = width / ratio;
    }
  } else {
    imageWidth = width;
    imageHeight = height;
  }

  $label.hide();

  // Show filters block
  $filters.addClass('active');
  // trigger first filter (Original)
  $filters.find('.preset')
    .first()
    .trigger('click');

  // find old canvas
  let $oldCanvas = $photoBox.find('canvas');

  // Create new canvas element and set its sizes
  let $photo = $('<canvas>').addClass('photo').attr({
    id: 'photo',
    width: imageWidth,
    height: imageHeight
  }).css({
    width: $oldCanvas.width() || '0px',
    heigth: $oldCanvas.height() || '0px'
  });

  // Delete previous canvas
  $oldCanvas.remove();

  // append canvas to #photo-box
  $photoBox.append($photo);

  // get ctx and draw image
  let ctx = $photo[0].getContext('2d');
  ctx.drawImage(this, 0, 0, imageWidth, imageHeight);

  // Then image on canvas 
  // we change canvas size with animation
  $photo.css({
    width: imageWidth + 'px',
    height: imageHeight + 'px'
  });

  $loader.hide();
}

function uploadFile(file) {
  
  if (file.type.match('image/jpeg') || file.type.match('image/png')) {
    $loader.show();
    image.src = URL.createObjectURL(file);
    uploadedFileName = file.name.split('.').shift();
  } else {
    alert('Поддерживаются только файлы jpg и png');
  }
}

$photoBox
  .on('dragenter', event => {
    $(event.target).addClass('dragenter');
    event.preventDefault();
  })
  .on('dragleave', event => {
    $(event.target).removeClass('dragenter');
    event.preventDefault();
  })
  .on('dragover', event => {
    event.preventDefault();
  })
  .on('drop', event => {
    $(event.target).removeClass('dragenter');

    if (event.originalEvent.dataTransfer.files.length) {
      uploadFile(event.originalEvent.dataTransfer.files[0]);
    }
    event.preventDefault();
  })
  .on('click', event => {
    $filePicker.trigger('click');
  });

$filePicker.on('change', event => {
  if (event.target.files.length) {
    uploadFile(event.target.files[0]);
  }
});

$filters.on('click', '.preset', event => {
  let
    $this = $(event.target),
    preset = $this.data('preset');

  $this
    .addClass('active')
    .siblings()
    .removeClass('active');

  Caman('#photo', function() {
    this.reset();

    $downloadLink.removeClass('show');
    currentPreset = preset;

    if (preset !== 'original') {
      this[preset]();
      this.render();
      $downloadLink.addClass('show');
    }
  });

  event.preventDefault();
});

Caman.Event.listen("processStart", function(job) {
  $loader.show();
});

Caman.Event.listen("renderFinished", function() {
  $loader.hide();
});

$filters.on('mousewheel', function(event, delta) {
  this.scrollLeft -= (delta * 70);
  event.preventDefault();
});

$downloadLink.on('click', event => {
  let link = event.target,
      canvas = document.getElementById('photo');
  
  link.href = canvas.toDataURL();
  link.download = `${uploadedFileName}-${currentPreset}.png`;
});
!
999px

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