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How to compress an image without losing its quality

Updated: Aug 22


How to compress an image

You’ve probably encountered the frustration of uploading an image, only to find it’s too large, loads slowly or messes up your webpage. Compressing images is the answer to these common issues. It’s a straightforward process that reduces a file size, making it smaller and more manageable without compromising its visual appeal if done correctly. 


Understanding how to compress images can transform your digital and graphic design experience. This article will not only explain what image compression is and why it matters, but also provide practical techniques to get you started.


Learn more about how to edit photos effectively and enhance your digital design projects.



compress images with Wixel


Shrink file sizes without breaking a sweat with our Image Compressor. Perfect for streamlining your work or organizing your personal photo collection, this tool reduces image size while keeping quality intact.




Understanding image compression 


Image compression reduces the size of an image file without significantly reducing its quality. It uses algorithms to remove redundant or unnecessary data, resulting in a file that's smaller and easier to manage. 


When working with image compression, you’ll find two primary types: lossy compression and lossless compression. 



Lossy compression 


Lossy compression reduces file size by permanently removing some image data. This means that while the image retains its general appearance, details may be lost upon close inspection. This is ideal for scenarios where a small file size takes priority, like website optimization or social media posts. 



Lossless compression 


Lossless compression, on the other hand, reduces file size without removing any data. The original image remains intact, making this method perfect for high-quality prints, illustrations, or more professional uses. Though the file won’t shrink as much as with lossy compression, the retention of image details makes it worth the trade-off. 



Why image compression matters 


For anyone working online, quick-loading images play a vital role in creating a positive user experience. Compressed images ensure your webpages load faster, which not only keeps visitors engaged, but also improves your search engine rankings. Compressed images also save storage space and bandwidth, crucial for small business owners or event planners juggling multiple visuals. 


From improving website speeds to ensuring compatibility across platforms, compressed images provide a win-win for both creators and end users. 



Tools for image compression 


There’s an extensive range of tools available to help compress images effortlessly. These tools fall into two main categories: online and offline solutions. 



Online tools 


Online photo editor tools are fantastic for quick tasks, requiring no installations. Popular solutions like Wixel offer drag-and-drop functionality, deliver compressed files in moments, and often have user-friendly interfaces. Some of the best photo editors online also provide bulk compression to save time. 


Compress your images without losing quality using the Wixel image compressor tools:




Offline tools 


Offline tools, on the other hand, are software applications you download and install. These tools are great for users handling sensitive images, since they don’t upload files to external servers. They often cater to advanced customization, allowing you to tweak compression levels for refined results. 



Step-by-step guide to compressing images 


Knowing the steps to compress an image will give you the control needed to maintain quality while optimizing size. Here’s a detailed breakdown using both online and offline tools. 



Compressing images online with Wixel 


  1. Open the Wixel website and select its “Image Compressor” feature.

  2. Drag and drop your image into the tool or click to upload from your device.

  3. Choose your preferred compression type (lossy or lossless).

  4. Preview the output quality and adjust settings if needed.

  5. Save the compressed image to your device.



Compressing images offline with software 


  1. Download and install a reputable image compression tool.

  2. Launch the application and upload your image.

  3. Access the settings to choose compression type and level.

  4. Compress your image and monitor any visible changes in a side-by-side preview.

  5. Export and save the optimized file to complete the process.



Best practices for maintaining image quality 


Compressing an image doesn’t have to mean sacrificing quality. Follow these tips to keep your visuals clear and polished. 



Choose the right file format 


When choosing image file types, it's important to consider the purpose and desired quality of your visuals. For detailed photographs, JPEG files with lossy compression offer the best balance between quality and small size. For graphics or text-heavy visuals, PNG works best, since it supports lossless compression effectively.


Learn more about popular image file types to choose the best option for your next design project:


  • What is an HEIC file? A guide for graphic designers

  • SVG files made simple: a designer’s guide to scalable vector graphics

  • Why choose WebP file images? Benefits and drawbacks for your designs



Compress only as needed 


Start with images already as close to their required dimensions as possible. Resizing your image to the appropriate resolution before compression makes your efforts more productive, reducing unnecessary data. 



Test multiple settings 


Experiment with different compression levels to find the right balance. Many tools allow you to preview how different settings impact both file size and visual elements, so don’t hesitate to test options before finalizing. 



Consider batch compression for bulk tasks 


If you're dealing with dozens of images, opt for tools equipped with a batch processing feature. This ensures consistency without the repetitive work of compressing images one by one. 


Discover techniques to level up your editing game and create visuals that wow every time:




How to compress an image FAQ


Should I resize or compress an image first?

It’s generally more effective to resize your images to the desired dimensions first, and then apply compression. This minimizes the amount of data that needs to be handled, and ensures better results

Is there a recommended image size for web use?

The ideal size for web images varies depending on the type of content and its placement on your website. On average, 1200x800 pixels is a good starting point for images to be displayed on desktop screens. However, make sure to always consider factors like page load speed and user experience when determining the final image size. 

Can I compress an already compressed image?

Yes, it is possible to compress an already compressed image, but it may not result in significant file size reduction. This is because most compression methods work by removing unnecessary data from an image, and if the image has already been compressed, there may not be much redundant data left to remove. Additionally, repeated compression can lead to loss of image quality and visual artifacts.

How does image compression affect website performance?

Image compression plays a crucial role in website performance as it directly impacts page load speed. Large images take longer to load, resulting in slower website loading times. This can negatively affect user experience and potentially drive away visitors from your site. By compressing images, the file size is reduced which leads to faster loading times. This not only improves website performance but also enhances user experience, helping to retain visitors and support your overall marketing strategy.

How can you compress an image without sacrificing quality for printing? 

When preparing images for print design, it’s important to strike the right balance between file size and image resolution. To compress an image effectively for printing,  adjust the image resolution to 300 DPI (dots per inch), the standard for high-quality printing. Additionally, saving the file in formats such as TIFF or PDF can help maintain quality while reducing unnecessary data. Always ensure that the image retains clear details and sharpness to meet the standards required for professional print design.


 
 
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