{"id":8389,"date":"2023-10-24T18:19:36","date_gmt":"2023-10-24T16:19:36","guid":{"rendered":"https:\/\/shortpixel.com/blog\/?p=8389"},"modified":"2024-11-20T15:07:54","modified_gmt":"2024-11-20T13:07:54","slug":"compress-png-images-without-losing-quality","status":"publish","type":"post","link":"https:\/\/shortpixel.com\/blog\/compress-png-images-without-losing-quality\/","title":{"rendered":"How to Compress PNG Images Without Losing Transparency and Quality"},"content":{"rendered":"\n<p>Learning how to compress PNG images without losing quality has lots of SEO benefits. PNG (Portable Network Graphic ) is a popular image format used on the web. It is the best for digital images with transparency, sharp edges, text and line art, and those with a wide range of colors.<\/p>\n\n\n\n<p>PNG images are known for their lossless compression, which means that the image quality and transparency are preserved while reducing the file size. The format is best for images that require a transparent background, such as icons, logos, and illustrations.<br><br>However, <a href=\"https:\/\/shortpixel.com\/blog\/jpg-vs-png-best-file-format-wordpress\/\">PNG files are usually larger compared to JPEG<\/a>.&nbsp; You may need to compress them further to reduce the file size. <\/p>\n\n\n\n<div class=\"wp-block-group has-border-color has-palette-color-8-background-color has-background is-layout-constrained wp-container-core-group-is-layout-239228e0 wp-block-group-is-layout-constrained\" style=\"border-color:#888888;border-width:1px;border-radius:20px;padding-top:var(--wp--preset--spacing--60);padding-right:var(--wp--preset--spacing--60);padding-bottom:var(--wp--preset--spacing--60);padding-left:var(--wp--preset--spacing--60)\">\n<div class=\"wp-block-group is-nowrap is-layout-flex wp-container-core-group-is-layout-6c531013 wp-block-group-is-layout-flex\">\n<div class=\"wp-block-outermost-icon-block\"><div class=\"icon-container\" style=\"width:25px;transform:rotate(0deg) scaleX(1) scaleY(1)\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" id=\"Layer_1\" viewBox=\"0 0 90.96 101.06\"><defs><style>.cls-1{fill:#efcc08;}<\/style><\/defs><path d=\"m53.54,79.72h-16.25c-1.48,0-2.68-1.2-2.68-2.68v-1.88c.02-1.62-.06-2.75-.23-3.39-.91-3.34-3.33-6.14-5.66-8.86-.77-.89-1.5-1.74-2.17-2.59-3.36-4.28-5.15-9.41-5.15-14.85,0-13.28,10.81-24.08,24.09-24.08s24.08,10.8,24.08,24.08c0,5.44-1.78,10.58-5.15,14.85-.59.76-1.27,1.55-1.98,2.39-2.39,2.82-5.07,5.96-5.99,9.28-.16.59-.24,1.66-.23,3.15v1.9c0,1.48-1.19,2.68-2.67,2.68h0Z\"><\/path><path class=\"cls-1\" d=\"m39.97,74.36h10.89c.03-2.08.23-3.11.42-3.78,1.24-4.47,4.32-8.1,7.03-11.28.71-.84,1.34-1.57,1.89-2.27,2.62-3.33,4.01-7.32,4.01-11.55,0-10.33-8.4-18.73-18.72-18.73s-18.73,8.4-18.73,18.73c0,4.22,1.38,8.21,4.01,11.54.62.79,1.3,1.57,2.02,2.4,2.47,2.87,5.54,6.43,6.78,10.95.18.71.39,1.78.42,3.99h0Z\"><\/path><path d=\"m53.54,90.34h-16.25c-1.48,0-2.68-1.2-2.68-2.68s1.19-2.67,2.68-2.67h16.25c1.48,0,2.67,1.19,2.67,2.67s-1.19,2.68-2.67,2.68h0Z\"><\/path><path d=\"m49.48,101.06h-8.12c-1.48,0-2.68-1.2-2.68-2.68s1.2-2.68,2.68-2.68h8.12c1.47,0,2.68,1.2,2.68,2.68s-1.2,2.68-2.68,2.68h0Z\"><\/path><path d=\"m88.29,48.16h-10.7c-1.48,0-2.68-1.19-2.68-2.68s1.2-2.68,2.68-2.68h10.7c1.48,0,2.67,1.2,2.67,2.68s-1.19,2.68-2.67,2.68h0Z\"><\/path><path d=\"m13.38,48.16H2.67c-1.48,0-2.67-1.19-2.67-2.68s1.19-2.68,2.67-2.68h10.7c1.48,0,2.68,1.2,2.68,2.68,0,1.48-1.2,2.68-2.68,2.68h0Z\"><\/path><path d=\"m45.48,16.06c-1.48,0-2.68-1.19-2.68-2.68V2.68c0-1.48,1.2-2.68,2.68-2.68s2.68,1.2,2.68,2.68v10.7c0,1.48-1.19,2.68-2.68,2.68h0Z\"><\/path><path d=\"m75.74,78.42c-.68,0-1.36-.26-1.89-.79l-7.57-7.57c-1.04-1.04-1.04-2.74,0-3.79,1.05-1.04,2.74-1.04,3.78,0l7.57,7.57c1.05,1.05,1.05,2.75,0,3.79-.52.53-1.2.78-1.9.78h0Z\"><\/path><path d=\"m22.77,25.46c-.68,0-1.37-.26-1.9-.79l-7.56-7.56c-1.05-1.05-1.05-2.75,0-3.79,1.05-1.04,2.74-1.04,3.78,0l7.57,7.57c1.05,1.04,1.05,2.75,0,3.79-.52.53-1.21.79-1.9.79h0Z\"><\/path><path d=\"m15.21,78.42c-.68,0-1.37-.26-1.89-.78-1.05-1.04-1.05-2.74,0-3.79l7.57-7.57c1.04-1.04,2.73-1.04,3.78,0,1.05,1.05,1.05,2.75,0,3.79l-7.57,7.57c-.53.52-1.21.78-1.89.78h0Z\"><\/path><path d=\"m68.18,25.46c-.68,0-1.37-.26-1.9-.79-1.04-1.04-1.04-2.74,0-3.78l7.57-7.57c1.04-1.04,2.74-1.05,3.78,0,1.05,1.05,1.05,2.74,0,3.79l-7.56,7.56c-.52.53-1.21.79-1.9.79h0Z\"><\/path><\/svg><\/div><\/div>\n\n\n\n<p class=\"has-medium-font-size\"><strong>Quick Takeaways<\/strong><\/p>\n<\/div>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Compressing PNG images without losing quality offers significant SEO benefits by improving website speed and performance.<\/li>\n\n\n\n<li>PNG is ideal for images requiring transparency, sharp edges, and text, but typically has larger file sizes than JPEGs.<\/li>\n\n\n\n<li>Lossless compression ensures PNG quality and transparency are preserved while reducing file size.<\/li>\n\n\n\n<li>Tools like image editing software (e.g., Photoshop, GIMP) and WordPress plugins (e.g., <a href=\"https:\/\/wordpress.org\/plugins\/shortpixel-image-optimiser\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/wordpress.org\/plugins\/shortpixel-image-optimiser\/\" rel=\"noreferrer noopener\">ShortPixel Image Optimizer<\/a>) can help compress PNGs without compromising quality.<\/li>\n\n\n\n<li>PNG quantization and conversion to WebP are additional methods to reduce PNG file size without losing important image features.<\/li>\n<\/ul>\n<\/div>\n\n\n\n<p>Here\u2019s how to compress PNG images without losing transparency and quality:<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">How To Make a PNG File Smaller Using an Image Editing Software<\/h2>\n\n\n\n<p>An image editing software gives you control over the optimization process. You can tailor the compression settings to match your needs while maintaining the transparency and quality of your PNG images.<\/p>\n\n\n\n<p>Popular image editing software you can use include <a href=\"https:\/\/www.adobe.com\/products\/photoshop.html\" target=\"_blank\" rel=\"noopener\">Adobe Photoshop<\/a> or Gimp.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Adobe Photoshop<\/h3>\n\n\n\n<p>Here&#8217;s how to reduce the size of a PNG in Photoshop:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Open the PNG image in Photoshop.<\/li>\n\n\n\n<li>Make a copy of the image (optional) before making changes. This way, you can always go back to the original if needed.<\/li>\n\n\n\n<li>Go to <strong>File<\/strong> > <strong>Export<\/strong> > <strong>Export As<\/strong>.<\/li>\n\n\n\n<li>Choose \u201c<strong>PNG<\/strong>\u201d as the format<\/li>\n\n\n\n<li>You will see settings for PNG export. To lower the file size, you can adjust the:\n<ul class=\"wp-block-list\">\n<li><strong>Image size<\/strong>: Ensure the dimensions match your original image and maintain the aspect ratio to avoid distortion.<\/li>\n\n\n\n<li><strong>Smaller file (8-bit): <\/strong>Converts the image to an 8-bit palette that will reduce the file size without affecting its visible quality.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Click \u201c<strong>Export<\/strong>\u201d and save your PNG image.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-export-as.jpg\"><img decoding=\"async\" width=\"1199\" height=\"890\" src=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-export-as.jpg\" alt=\"\" class=\"wp-image-11802\" title=\"\" srcset=\"https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-export-as.jpg 1199w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-export-as-300x223.jpg 300w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-export-as-1024x760.jpg 1024w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-export-as-768x570.jpg 768w\" sizes=\"(max-width: 1199px) 100vw, 1199px\" \/><\/a><\/figure>\n\n\n\n<p>Alternatively, use the \u201cSave for Web\u201d feature in Photoshop. To do this:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Open the PNG image in Photoshop<\/li>\n\n\n\n<li>Click <strong>File<\/strong>\u201d> <strong>Export <\/strong>> <strong>Save for Web<\/strong>.<\/li>\n\n\n\n<li>Adjust the settings.\n<ul class=\"wp-block-list\">\n<li><strong>Format<\/strong>: Choose <strong>PNG-8<\/strong> or <strong>PNG-24<\/strong>, depending on the image. <strong>PNG-8<\/strong> is suitable for simpler images with fewer colors (like logos or icons). It uses indexed color, which limits the color palette but keeps file sizes smaller. <strong>PNG-24<\/strong> supports full transparency and a larger color palette, ideal for images with more detail and gradients.<\/li>\n\n\n\n<li><strong>Transparency<\/strong>: If your image has a transparent background, make sure the <strong>Transparency<\/strong> checkbox is selected.<\/li>\n\n\n\n<li><strong>Colors<\/strong>: Set this to a lower number (e.g., 256 colors) if the image doesn\u2019t have a lot of detail. If you need higher color accuracy, you can increase this, but it will result in a larger file size.<\/li>\n\n\n\n<li><strong>Image Size<\/strong>: Adjust the <strong>Image Size<\/strong> (if necessary) to ensure it&#8217;s optimized for web use. If you need to insert it into a website, check the container where the image will be placed and verify the maximum width and height. Then, resize the image accordingly to fit within those dimensions without exceeding them. <\/li>\n\n\n\n<li><strong>Metadata<\/strong>: Set to <strong>None<\/strong> to remove unnecessary metadata in case you don&#8217;t need it, which can reduce file size.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>Always check the <strong>2-Up <\/strong>preview to compare the original image and the optimized version to make sure the quality meets your needs.<\/li>\n\n\n\n<li>Click &#8220;<strong>Save&#8230;<\/strong>&#8221; to save the file.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-save-for-web-legacy.jpg\"><img decoding=\"async\" width=\"1034\" height=\"757\" src=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-save-for-web-legacy.jpg\" alt=\"\" class=\"wp-image-11803\" title=\"\" srcset=\"https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-save-for-web-legacy.jpg 1034w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-save-for-web-legacy-300x220.jpg 300w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-save-for-web-legacy-1024x750.jpg 1024w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/photoshop-png-save-for-web-legacy-768x562.jpg 768w\" sizes=\"(max-width: 1034px) 100vw, 1034px\" \/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">GIMP<\/h3>\n\n\n\n<p><a href=\"https:\/\/www.gimp.org\/\" target=\"_blank\" rel=\"noopener\">GIMP<\/a> is a free and open-source image editor. If you&#8217;ve been wondering how to make a PNG smaller using GIMP, here are a couple easy steps to follow:<\/p>\n\n\n\n<p><strong>Step 1<\/strong>: Launch GIMP on your computer.<\/p>\n\n\n\n<p><strong>Step 2<\/strong>: Open the PNG image you want to optimize by going to <strong>File<\/strong> > <strong>Open<\/strong> then select the file from your computer.<\/p>\n\n\n\n<p><strong>Step 3<\/strong>: Go to <strong>File<\/strong> > <strong>Export As<\/strong>, and click the <strong>Export<\/strong> button.<\/p>\n\n\n\n<p><strong>Step 4<\/strong>: In the <strong>Export Image <\/strong>dialog box that opens, configure the settings.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Compression level<\/strong>: Adjust the compression level to control the amount of compression. A higher value (e.g., 9) results in minimal compression with no quality loss. Lower values (e.g., 1) apply more compression, reducing file size but potentially affecting image quality.<\/li>\n\n\n\n<li><strong>Interlacing<\/strong>: You can choose <strong>Adam7<\/strong> for interlacing. Interlacing makes the image display more smoothly during loading but might increase the file size slightly.<\/li>\n\n\n\n<li><strong>Save background color<\/strong>: Make sure this option is <strong>unchecked to preserve transparency<\/strong> in the image.<\/li>\n\n\n\n<li><strong>Save IPTC data<\/strong>: IPTC  data is metadata that contains information about the image, such as the photographer, copyright, description, and keywords. Make sure it&#8217;s <strong>disabled <\/strong>if you don&#8217;t need it to further reduce PNG size.<\/li>\n<\/ul>\n\n\n\n<p><strong>Step 5<\/strong>: Once you\u2019re satisfied with the settings, click <strong>Export<\/strong> to save the optimize PNG image.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/gimp-export-png.jpg\"><img decoding=\"async\" width=\"1336\" height=\"894\" src=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/gimp-export-png.jpg\" alt=\"\" class=\"wp-image-11815\" title=\"\" srcset=\"https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/gimp-export-png.jpg 1336w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/gimp-export-png-300x201.jpg 300w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/gimp-export-png-1024x685.jpg 1024w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/gimp-export-png-768x514.jpg 768w\" sizes=\"(max-width: 1336px) 100vw, 1336px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">How To Compress a PNG File Using a WordPress Image Optimization Plugin<\/h2>\n\n\n\n<p>An image optimization plugin compresses images to reduce their file size. Many plugins offer both <a href=\"https:\/\/shortpixel.com\/blog\/difference-lossy-and-lossless-image-compression\/\">lossless and lossy compression<\/a> options.<\/p>\n\n\n\n<p>Lossless compression retains the original quality while reducing the file size. Lossy compression reduces quality slightly for more reduction in file size. To PNG compress an image without losing transparency and quality, use lossless compression.<\/p>\n\n\n\n<p>Examples of <a href=\"https:\/\/shortpixel.com\/blog\/top-plugins-for-image-compression-in-wordpress\/\">image compression plugins for WordPress<\/a> for PNG lossless compression include:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>ShortPixel Image Optimizer: <\/strong>Known for its simplicity and ease of use, it offers both lossy and lossless compression and supports multiple image formats.<\/li>\n\n\n\n<li><strong>Smush<\/strong>: A popular plugin that offers both lossless and lossy compression.<\/li>\n\n\n\n<li><strong>Imagify<\/strong>: Has three levels of image compression and is integrated with popular page builders and e-commerce plugins.<\/li>\n\n\n\n<li><strong>EWWW Image Optimizer<\/strong>: Supports various file formats and has advanced options for developers.<\/li>\n<\/ul>\n\n\n\n<p><br>To compress your PNG images with a WordPress plugin, you first need to install and activate the plugin. Configure the settings by selecting lossless compression and the level of compression. Note that higher compression levels result in some quality loss.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How To Make PNG Smaller Using Quantization<\/h2>\n\n\n\n<p>PNG or <a href=\"https:\/\/blog.filestack.com\/tutorials\/color-quantization\/\" target=\"_blank\" rel=\"noopener\">color quantization<\/a> reduces the number of unique colors in a PNG image. This is done by simplifying the image&#8217;s color palette, which can result in a smaller file size. <\/p>\n\n\n\n<p>As illustrated in the image below, the downside of PNG quantization is the distortion of boundaries in areas with gradual color transitions.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/Color-Quantization-Fish.png\"><img decoding=\"async\" width=\"597\" height=\"221\" src=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/Color-Quantization-Fish.png\" alt=\"An example distortion of boundaries when compressing PNG Images\" class=\"wp-image-8393\" title=\"\" srcset=\"https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/Color-Quantization-Fish.png 597w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/Color-Quantization-Fish-300x111.png 300w\" sizes=\"(max-width: 597px) 100vw, 597px\" \/><\/a><\/figure>\n\n\n\n<p>Error diffusion dithering (EDD), an image processing technique, helps resolve this problem as it computes the error between the pixel value and its nearest representative.<\/p>\n\n\n\n<p>PNG quantization involves;<\/p>\n\n\n\n<p><strong>Reducing the Number of Colors<\/strong><\/p>\n\n\n\n<p>PNG images use a palette of colors to represent the image. Each pixel in the image is associated with a specific color from this palette. PNG quantization creates a smaller, optimized palette to represent the entire image.<\/p>\n\n\n\n<p><strong>Reducing Color Depth<\/strong><\/p>\n\n\n\n<p>Limiting the number of colors in the palette reduces the image&#8217;s&nbsp;<a href=\"https:\/\/www.pcmag.com\/encyclopedia\/term\/color-depth\" target=\"_blank\" rel=\"noreferrer noopener\">color depth<\/a>. The maximum number of colors in an image is determined by the number of binary bits defining every pixel&#8217;s color or shade. For example, you can save a 32-bit image as a 24-bit or 8-bit image.<\/p>\n\n\n\n<p><strong>Dithering<\/strong><\/p>\n\n\n\n<p><a href=\"https:\/\/www.lifewire.com\/what-is-dithering-4686105\" target=\"_blank\" rel=\"noopener\">Dithering<\/a> introduces patterns or noise into an image. Here&#8217;s an example of an image after dithering: <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/Endre-black-dithering.png\"><img decoding=\"async\" width=\"603\" height=\"191\" src=\"https:\/\/shortpixel.com/blog\/wp-content\/uploads\/2023\/10\/Endre-black-dithering.png\" alt=\"example of image noiese after dithering while compressing PNG Images\" class=\"wp-image-8394\" title=\"\" srcset=\"https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/Endre-black-dithering.png 603w, https:\/\/shortpixel.com\/blog\/wp-content\/uploads\/2023\/10\/Endre-black-dithering-300x95.png 300w\" sizes=\"(max-width: 603px) 100vw, 603px\" \/><\/a><\/figure>\n\n\n\n<p>This creates the illusion of additional colors and smoother transitions between colors, which is useful when reducing the number of colors in an image to maintain quality.<\/p>\n\n\n\n<p><strong>Lossless and Lossy Quantization<\/strong><\/p>\n\n\n\n<p>PNG quantization can be either lossless or lossy. You can achieve greater compression, lose some quality, or preserve the original quality for lesser compression.<\/p>\n\n\n\n<p><strong>Transparency Preservation<\/strong><\/p>\n\n\n\n<p>PNG images can contain transparency (alpha) information. Effective quantization should ensure that transparency and transparency-related information are preserved.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<p>So, while image compression reduces the file size of PNG images, quantization specifically reduces the number of colors in an image.<\/p>\n\n\n\n<p>This process helps lower the image size without sacrificing quality, particularly for images with transparent backgrounds.<\/p>\n\n\n\n<p>Unlike basic compression, quantization focuses on optimizing the color palette to retain only the most essential colors, which is particularly valuable when dealing with transparent PNGs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Tools for PNG Quantization<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>ImageMagick (convert tool)<\/strong>\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/imagemagick.org\/index.php\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/imagemagick.org\/index.php\" rel=\"noreferrer noopener\">ImageMagick<\/a> offers powerful quantization capabilities through the <code>-colors<\/code> parameter, allowing developers to control the number of colors in a PNG image. This tool is highly flexible and well-suited for advanced users, providing precise control over color reduction while ensuring transparency is maintained. Though it offers great customization, it is primarily designed for developers rather than typical end-users.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>pngquant<\/strong>\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/pngquant.org\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/pngquant.org\/\" rel=\"noreferrer noopener\">pngquant<\/a> is a powerful open-source tool specifically designed for lossy PNG quantization. It reduces the number of colors in the image while preserving transparency, making it one of the most effective tools for optimizing PNG files. The result is a smaller file size with minimal loss in visual quality.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>GIMP<\/strong>\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.gimp.org\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.gimp.org\/\" rel=\"noreferrer noopener\">GIMP<\/a>, the free image editing software, offers tools for reducing the color palette of PNG images. Using the <a href=\"https:\/\/docs.gimp.org\/en\/gimp-image-convert-indexed.html\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/docs.gimp.org\/en\/gimp-image-convert-indexed.html\" rel=\"noreferrer noopener\">Indexed Color Mode<\/a>, you can quantize images to reduce the color depth while keeping transparency intact.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>OptiPNG<\/strong>\n<ul class=\"wp-block-list\">\n<li>While <a href=\"https:\/\/optipng.sourceforge.net\/\" data-type=\"link\" data-id=\"https:\/\/optipng.sourceforge.net\/\" target=\"_blank\" rel=\"noreferrer noopener\">OptiPNG<\/a> is known for its lossless optimization, it also provides basic quantization features. Though not as advanced as pngquant, it can still help reduce file size without losing transparency or image quality.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Squoosh.app<\/strong>\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/squoosh.app\/editor\" data-type=\"link\" data-id=\"https:\/\/squoosh.app\/editor\" target=\"_blank\" rel=\"noreferrer noopener\">Squoosh<\/a> is an online image optimization tool that offers quantization features. It can handle transparency and reduce color palettes effectively, though its primary focus is compression.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">Convert to WebP<\/h2>\n\n\n\n<p>Depending on your compression needs, you can convert your PNG images into formats that offer better compression without compromising quality.<\/p>\n\n\n\n<p><a target=\"_blank\" href=\"https:\/\/shortpixel.com\/blog\/how-webp-images-can-speed-up-your-site\/\" rel=\"noreferrer noopener\">WebP<\/a>&nbsp;is a modern image format that significantly reduces file size while maintaining high image quality and transparency. You can also use image editing software like Adobe Photoshop or GIMP.&nbsp;<\/p>\n\n\n\n<p>Alternatively, choose a WordPress image optimization plugin with features for converting PNG to WebP format.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Compress PNG Images for Web<\/h2>\n\n\n\n<p>Knowing how to optimize PNG images without sacrificing transparency and quality is essential for web developers, designers, and anyone who works with visuals on the web.<\/p>\n\n\n\n<p>You can significantly reduce file sizes. It leads to faster loading of web pages, improved user experiences, and more efficient storage utilization.<\/p>\n\n\n\n<p>The key to successful compression lies in striking the right balance between smaller file sizes and maintaining the quality of your PNG images.<\/p>\n\n\n\n<p>To compress PNG images for the web, start by reducing the file size without losing quality. You can achieve this by using PNG size reducer tools like <a href=\"https:\/\/shortpixel.com\/online-image-compression\" data-type=\"link\" data-id=\"https:\/\/shortpixel.com\/online-image-compression\" target=\"_blank\" rel=\"noreferrer noopener\">ShortPixel<\/a>. It automatically optimizes PNG images by removing unnecessary data, making them lighter while retaining high image quality.<\/p>\n\n\n\n<div class=\"wp-block-group has-border-color has-palette-color-4-border-color has-palette-color-6-background-color has-background is-vertical is-content-justification-left is-layout-flex wp-container-core-group-is-layout-e21fc307 wp-block-group-is-layout-flex\" style=\"border-width:1px;border-radius:20px;margin-top:var(--wp--preset--spacing--60);margin-bottom:var(--wp--preset--spacing--60);padding-top:var(--wp--preset--spacing--60);padding-right:var(--wp--preset--spacing--60);padding-bottom:var(--wp--preset--spacing--60);padding-left:var(--wp--preset--spacing--60)\">\n<h3 class=\"wp-block-heading\" id=\"cta-heading\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">Compress PNG online for free!<\/h3>\n\n\n\n<p>Use a free PNG compressor to optimize your images right now.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/shortpixel.com\/online-image-compression\" target=\"_blank\" rel=\"noreferrer noopener\">Get Started<\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">FAQs<\/h2>\n\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list \">\n<div id=\"faq-question-1732101640470\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Can you compress PNG without losing quality?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Yes, you can compress PNG file without losing quality using tools like <a href=\"https:\/\/shortpixel.com\/\" data-type=\"link\" data-id=\"https:\/\/shortpixel.com\/\" target=\"_blank\" rel=\"noreferrer noopener\">ShortPixel<\/a>. Their online image compression service can reduce file size while maintaining the original quality.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1732101643635\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">How much can a PNG file be compressed?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>The compression of a PNG file depends on its content, but file sizes can often be reduced by 50% or more.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1732101645833\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">What happens when you compress a PNG?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>When you compress a PNG, unnecessary data is removed, and the file is optimized to reduce its size. Lossless PNG compression ensures the image quality remains the same while making it more efficient for storage and web use.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1732101648428\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">What compression method does PNG use?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>PNG uses lossless compression based on the DEFLATE algorithm, which combines LZ77 compression and Huffman coding. This method reduces file size while preserving all image data.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-question-1732101651666\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question \">Are PNGs lossless?<\/h3>\n<div class=\"rank-math-answer \">\n\n<p>Yes, PNGs are lossless, which means they retain all the original image data after compression, ensuring no quality is lost.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Learning how to compress PNG images without losing quality has lots of SEO benefits. PNG (Portable Network Graphic ) is a popular image format used on the web. It is the best for digital images with transparency, sharp edges, text and line art, and those with a wide range of colors. PNG images are known [&hellip;]<\/p>\n","protected":false},"author":26,"featured_media":8396,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-8389","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-image-optimization"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/posts\/8389","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/users\/26"}],"replies":[{"embeddable":true,"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/comments?post=8389"}],"version-history":[{"count":20,"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/posts\/8389\/revisions"}],"predecessor-version":[{"id":11818,"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/posts\/8389\/revisions\/11818"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/media\/8396"}],"wp:attachment":[{"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/media?parent=8389"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/categories?post=8389"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/shortpixel.com\/blog\/wp-json\/wp\/v2\/tags?post=8389"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}