If you are trying to speed up your website, blog or online store, you have probably seen advice like “use WebP images” or “convert JPG to WebP for better performance”. Many developers and content creators now search for terms like what is WebP format, convert JPG to WebP online and convert PNG to WebP without losing quality.

WebP is a modern image format that can significantly reduce file size while keeping very good visual quality. When used correctly, WebP can make pages load faster, improve Core Web Vitals and help your SEO, especially on mobile devices and slower connections.

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In this guide, you will learn:

  • What WebP actually is and how it works.
  • WebP vs JPG vs PNG in simple language.
  • When you should use WebP and when traditional formats are still fine.
  • How to convert JPG to WebP and convert PNG to WebP using an online WebP converter.
  • Recommended WebP quality settings for blogs, e-commerce and landing pages.

1. What is WebP?

WebP is an image format developed by Google specifically for the web. The main goal of WebP is simple:

Deliver images that are smaller in file size than traditional formats like JPG and PNG, while still looking visually similar or better.

1.1 Key features of WebP

WebP is powerful because it combines several important features:

  • Lossy compression (like JPG) for very small file sizes.
  • Lossless compression (like PNG) when you need maximum quality.
  • Support for transparency (alpha channel) like PNG.
  • Support for animation, like animated GIFs but more efficient.

This means WebP can replace:

  • JPG photos on your website.
  • PNG graphics with transparency.
  • Even animated GIFs, with much smaller files.

1.2 Browser support and compatibility

Modern browsers such as Chrome, Edge, Firefox, Opera and recent versions of Safari all support WebP. For most users on updated devices, WebP images work just like JPG and PNG.

For older browsers or special environments, you can still keep JPG or PNG as a fallback, but for standard public websites, WebP is now considered safe to use.

2. Why WebP matters for faster websites

Images are often the heaviest part of a page. Large JPG or PNG files slow down:

  • Blogs and news sites.
  • E-commerce product pages.
  • Landing pages and portfolios.

WebP helps by reducing image weight while keeping quality.

2.1 Smaller file size, same visual quality

In many real-world tests:

  • WebP images can be 25–35% smaller than equivalent JPGs at similar visual quality.
  • WebP images can be up to 50% smaller than PNGs, especially for photos and complex graphics.

This means faster downloads for users and less bandwidth usage for your server.

2.2 Better Core Web Vitals and SEO

Google uses page experience signals like Largest Contentful Paint (LCP) and overall load time when ranking pages. Large, unoptimized images are a common cause of poor scores.

By using WebP for key images (hero banners, product pictures, blog thumbnails), you can:

  • Improve LCP and perceived loading speed.
  • Reduce total page weight.
  • Give Google fewer reasons to penalize your site for slow performance.

A proper JPG to WebP and PNG to WebP workflow is one of the simplest ways to upgrade page speed without changing your content.

3. WebP vs JPG vs PNG: simple comparison

Here is a quick, practical comparison:

3.1 JPG

  • Lossy compression.
  • Good for photos and gradients.
  • No transparency support.
  • Smaller than PNG, larger than WebP in many cases.

3.2 PNG

  • Lossless compression.
  • Excellent for logos, icons, UI, screenshots.
  • Supports transparency.
  • File size can be very large, especially for photos.

3.3 WebP

  • Supports both lossy and lossless modes.
  • Supports transparency (like PNG) and can still be small.
  • Designed specifically for web performance.
  • Often much smaller than equivalent JPG or PNG at similar quality.

In practice, WebP is usually the best choice for website images, while JPG and PNG remain useful as source formats or fallbacks.

4. When should you use WebP?

You do not need to convert every single image to WebP, but it is an excellent default for most web use cases.

4.1 Good use cases for WebP

  • Blog and article images (feature images, in-content images).
  • E-commerce product photos.
  • Landing page banners and hero sections.
  • Portfolio images and case studies.
  • Thumbnails and previews for galleries, related posts and cards.

If your site relies on visual content, converting JPG or PNG to WebP can have a noticeable impact on speed.

4.2 When to keep JPG or PNG

You may want to keep traditional formats when:

  • You need maximum compatibility with very old browsers or environments.
  • You are storing source files for design or print (for example, PNG with full quality).
  • You are working with logos in vector format like SVG, which can be even more efficient than WebP for simple shapes.

In general, you can:

  • Use WebP as the main format for live website images.
  • Keep JPG and PNG as source or backup files in your project folders.

5. How to convert JPG/PNG to WebP (step-by-step)

Now let us walk through how to actually convert your existing images. The process is similar whether you want to:

  • Convert JPG to WebP.
  • Convert PNG to WebP.

The exact interface depends on the tool you use, but the basic steps are the same.

5.1 Step 1: Choose which images to convert

Start by deciding which images should become WebP:

  • Pick photos and web content images first, especially large JPGs and PNGs used on important pages.
  • Leave original logos and vector assets as they are, or convert copies for web use only.

Many site owners begin with:

  • Home page hero image.
  • Top blog posts.
  • Best-selling product images.

5.2 Step 2: Open an online WebP converter

Go to a trusted image to WebP converter or dedicated JPG to WebP / PNG to WebP converter. A typical converter page will include:

  • A button to upload images from your device.
  • A drag-and-drop area for files.
  • Options to choose output format, usually including WebP.

5.3 Step 3: Upload your JPG and PNG images

Click the upload button or drag your images into the drop zone. Most modern tools:

  • Support multiple files at once.
  • Allow a mix of JPG and PNG files in the same batch.

For website optimization, batch conversion is very useful, because you can convert all images for a page or section in one run.

5.4 Step 4: Select WebP as the output format

Confirm that the output is set to WebP. If the tool supports several options like JPG, PNG, WebP and PDF, make sure WebP is selected as the final format.

5.5 Step 5: Choose the right WebP quality settings

This is the most important step for getting smaller WebP files without visible quality loss.

Many converters offer a quality slider or a percentage for WebP compression. Here is a practical guideline:

  • 90–100: Very high quality, slightly larger WebP files. Good for high-value visuals.
  • 80–90: Ideal for most websites. Strong size reduction while still looking sharp.
  • 70–80: More aggressive compression. Still fine for many images, but you should check visually.

For most blogs, online stores and landing pages, a WebP quality setting around 80–90 gives an excellent balance between size and clarity.

Some tools also let you choose between:

  • Lossy WebP (smaller files, recommended for most photos).
  • Lossless WebP (larger files, but perfect preservation, similar to PNG).

For standard website photos, lossy WebP at a good quality setting is usually the right choice.

5.6 Step 6: Start conversion

After setting your preferred WebP quality level:

  • Click “Convert”, “Start” or the equivalent button.
  • Wait while the tool processes all your JPG and PNG files into WebP.

The conversion process is usually quite fast for typical web image sizes.

5.7 Step 7: Download and organize your WebP images

Once the conversion is complete:

  • Download individual WebP files or a ZIP archive containing all converted images.
  • Save them into a dedicated folder, for example “images-webp” or “optimized-webp”.

Keeping WebP files separate from original JPG and PNG sources helps you manage assets and avoid confusion when updating your site.

6. Recommended WebP strategies for real websites

Converting to WebP is the first step. Using WebP images effectively is the next.

6.1 For blogs and content websites

  • Convert all featured images and key in-article images from JPG/PNG to WebP.
  • Use a WebP quality around 80–90.
  • Make sure image dimensions match the layout; avoid uploading much larger images than needed.

6.2 For e-commerce and product images

  • Convert main product photos, gallery views and thumbnails to WebP.
  • Use slightly higher quality for images that customers zoom into, such as 85–90.
  • For small thumbnails, you can use stronger compression since the images are displayed at small sizes.

6.3 For landing pages and hero banners

  • Hero images are often large, so WebP can give big performance gains.
  • Use a quality setting that keeps the hero image visually clean, for example around 85.
  • Test the final page speed after switching to WebP to see the impact on load time.

7. Common questions about WebP and conversion

7.1 Does converting JPG or PNG to WebP reduce quality?

When you convert from JPG or PNG to WebP using lossy compression, the converter will discard some image data, similar to how JPG works. However, if you choose a good quality level (for example 80–90), the visual difference is often tiny, while the size savings are significant. For most websites, this trade-off is worth it.

7.2 Can I convert WebP back to JPG or PNG?

Yes, you can convert WebP back to JPG or PNG using a WebP to JPG or WebP to PNG converter. However, you will not recover any quality lost during the initial WebP compression. The safest workflow is to keep original JPG or PNG files as your master sources and use WebP only for final web delivery.

7.3 Are WebP images supported on all browsers?

WebP is supported on all major modern browsers, including Chrome, Firefox, Edge and current versions of Safari. Only very old browsers lack WebP support. If you need to support those rare cases, you can configure your site or CMS to serve JPG or PNG as a fallback.

7.4 Is WebP always better than JPG and PNG?

WebP is usually better for live website images where performance matters. However, JPG and PNG are still useful as source formats and in workflows where compatibility or strict losslessness is needed. The best approach is:

  • Use WebP for images that are actually loaded by visitors.
  • Keep JPG/PNG as original working files and backups.

8. Summary: using WebP to make your site faster

WebP is a modern image format that helps you:

  • Reduce image file sizes compared to JPG and PNG.
  • Maintain good visual quality with smart compression.
  • Improve website loading speed and user experience.

To take advantage of WebP, you can:

  1. Identify key images on your site: photos, banners, product images and thumbnails.
  2. Use an image to WebP converter to convert JPG and PNG files to WebP.
  3. Choose WebP quality settings around 80–90 for a strong balance of clarity and size.
  4. Replace old JPG and PNG images on your site with WebP versions, while keeping original files as backups.

With just this one optimization, your pages can become noticeably faster and lighter, especially on mobile. For any modern website that uses images heavily, learning how to convert JPG to WebP and PNG to WebP is now an essential part of a professional performance and SEO strategy.