How to Optimize Images for Web

Discover how to optimize images for the web using Picsart Programmable Image APIs. This guide covers selecting the right image formats, balancing file size with quality through effective compression, and provides a practical TypeScript example to automate the process. Enhance your website's speed and SEO effortlessly!

Optimizing images for the web is crucial for improving website load times, enhancing user experience, and boosting your site's SEO performance. High-quality images can dramatically slow down your website, negatively impacting your page performance index on tools like Google’s PageSpeed Insights. Fortunately, with Picsart Programmable Image APIs, you can automate and programmatically optimize your images for optimal web performance.

Preferred Image Formats for Web

When selecting image formats for web use, the primary goal is to find the right balance between file size and image quality. The most commonly recommended formats are:

  • JPEG (JPG): Best for photographs and real-world images, offering good quality even at lower file sizes.
  • WEBP: A modern image format that provides superior lossless and lossy compression techniques. It is designed to create smaller, richer images that make the web faster.

Both formats are widely supported and are excellent choices for reducing payload size without losing significant image quality.

Compression Strategies

Compression plays a vital role in optimizing images. For JPEG and WEBP, even a 90% compression rate can dramatically reduce file sizes, making images much faster to load. However, this high level of compression can sometimes degrade image quality too much, impacting the visual appeal of your images.

A more balanced approach is to aim for around 70-75% compression. This rate typically offers a good compromise, significantly reducing file size while maintaining acceptable image quality. This level of compression is particularly effective for maintaining the aesthetic integrity of images while ensuring your web pages load quickly.

Using Picsart Programmable Image APIs for Image Optimization

Picsart’s Edit Image feature allows you to easily adjust the compression level and resize images, making them perfect for web usage. Here’s a simple example using JQuery, demonstrating how to use the /edit endpoint to resize an image and set the quality to 75%:

const form = new FormData();
form.append('format', 'JPG');
form.append('quality', '75');
form.append('image_url', 'Your image URL goes here');
form.append('mode', 'resize');

const settings = {
  async: true,
  crossDomain: true,
  url: '',
  method: 'POST',
  headers: {
    accept: 'application/json',
    'X-Picsart-API-Key': 'Your API Key goes here'
  processData: false,
  contentType: false,
  mimeType: 'multipart/form-data',
  data: form

$.ajax(settings).done(function (response) {
  // Parse the JSON string
  const jsonObject = JSON.parse(response);

  // Access the URL from the parsed JSON object
  const url =;

  // Log the URL to the console

This code snippet sends a POST request to the Picsart Edit Image endpoint, specifying the image URL and the desired optimization settings. It resizes the image and adjusts its quality to 75%, which is optimal for web use.

You can use the API Reference documentation for the Edit Image Endpoint to generate a code like this in many different programming languages like Kotlin, Python, etc.

Important things to take into account to make the integration complete:

The Bottom Line

Effectively optimizing your images is key to maintaining a fast, efficient, and SEO-friendly website. By utilizing Picsart Programmable Image APIs, you can automate the process, ensuring all images on your site are optimized for the best balance between quality and performance. Start integrating these practices today to see a significant improvement in your website’s performance metrics.