WebP Explained: Should You Convert Your Images to WebP in 2026?

WebP has been around since 2010 when Google released it as a replacement for JPG and PNG. Sixteen years later, it is supported by every major browser, produces demonstrably smaller files, and is still widely misunderstood by people who encounter it.

This guide explains what WebP actually is, how its compression compares to the alternatives, and when converting your images to WebP is worth doing — and when it is not.

What is WebP?

WebP is an image format developed by Google, based on technology from the VP8 video codec. It supports both lossy compression (like JPG) and lossless compression (like PNG), plus transparency (like PNG) and animation (like GIF). One format handles all of these use cases.

The compression efficiency comes from the underlying algorithm. WebP’s lossy mode uses predictive coding — it predicts the color values of pixel blocks based on surrounding blocks and encodes only the difference between the prediction and the actual value. This is more efficient than JPG’s discrete cosine transform approach, particularly for images with areas of similar color.

In practical testing:

• WebP lossy is typically 25–34% smaller than JPG at equivalent visual quality
• WebP lossless is typically 26% smaller than PNG
• WebP with transparency is typically 3× smaller than PNG for the same image

These are averages. The actual difference depends on the image content. Photographs with complex textures see moderate gains. Images with large flat-color areas see larger gains. Images that are already highly textured and detailed throughout see smaller gains.

Browser support in 2026

WebP achieved near-universal browser support when Safari added it in version 14 in 2020. As of 2026, WebP is supported by:

• Chrome (since version 23, 2012)
• Firefox (since version 65, 2019)
• Safari (since version 14, 2020)
• Edge (since version 18, 2018)
• Opera, Samsung Internet, and all other major browsers

Global browser support for WebP is above 97%. For practical purposes, if someone can use the web, their browser can display WebP.

The main remaining scenarios where WebP does not display are older versions of iOS (below 14), Internet Explorer (no longer supported by Microsoft), and some older Android WebViews in apps that have not been updated. For most websites targeting general audiences, these are negligible.

WebP versus JPG: a direct comparison

JPG has been the standard for photographs on the web for thirty years. It does the job reasonably well. WebP does it better.

For a typical photograph displayed on a website at 1200 pixels wide:

A JPG at 80% quality might be 180KB and look good. The same image as WebP at equivalent quality is typically 120–140KB and looks identical.

That 40–50KB difference per image might sound minor. On a product page with 20 product images, that is 800KB–1MB saved per page load. On a site with hundreds of pages, these savings compound significantly.

Google’s PageSpeed Insights and Core Web Vitals scoring flag oversized images as a performance issue. Switching from JPG to WebP for web images is one of the most straightforward ways to improve these scores without compromising visual quality.

WebP versus PNG: when to switch

PNG is used for images that require lossless quality or transparency — logos, icons, screenshots, UI elements, illustrations with flat colors and sharp edges.

WebP lossless produces smaller files than PNG for most content. WebP also supports transparency with better compression than PNG. For web assets, converting PNG files to WebP is worthwhile.

The situation where PNG still makes sense over WebP is when you need to edit the image further. PNG’s lossless encoding means every edit/save cycle preserves the original data exactly. WebP lossless does the same, but tooling support for editing WebP files is less universal. Keep PNG as your source file and convert to WebP for the final delivered version.

AVIF: is it better than WebP?

AVIF is a newer format based on the AV1 video codec. It achieves even better compression than WebP — typically 30–50% smaller than equivalent WebP at the same quality.

Browser support for AVIF is now good: Chrome (since 2020), Firefox (since 2021), and Safari (since 2023). As of 2026, global support is around 90%.

The tradeoff is encoding speed — generating AVIF files takes significantly longer than generating WebP files, which matters when processing large batches of images. AVIF also has less tooling support and is not accepted everywhere WebP is.

The practical recommendation for 2026:

• Use AVIF where you can control the delivery environment and encoding time is not a constraint
• Use WebP as the reliable baseline for web images
• Keep JPG for contexts outside the web — email, desktop software, sharing with non-developers

When to convert to WebP

Website images — Any photograph or graphic displayed on a website should be WebP. The size reduction improves page load times, which affects both user experience and search rankings.

Web application assets — Icons, UI graphics, and interface images that are currently PNG files are good candidates for WebP conversion.

Product images in e-commerce — Shopify, WooCommerce, and other platforms support WebP. Smaller product images mean faster browsing and lower bandwidth costs.

Blog and editorial images — If you publish content with images, WebP reduces the bandwidth your site consumes and speeds up page rendering for readers on slower connections.

When NOT to convert to WebP

Email attachments — Email clients do not support WebP. If you need to attach an image to an email, use JPG or PNG.

Printing — WebP is a screen format. Print services expect TIFF, PDF, or high-quality JPG. Do not send WebP to a print shop.

Social media sharing — Some platforms still handle JPG more reliably than WebP for direct uploads. Test your specific platform before switching.

Software that does not support WebP — Adobe Photoshop (older versions), Microsoft Office (older versions), and various other desktop applications cannot open WebP natively. If recipients might need to open the image in desktop software, use JPG or PNG.

Source files you will edit — Keep editable copies as PNG or TIFF. Convert to WebP as the final delivery format only.

How to convert images to WebP on TinyTransform

For JPG to WebP conversion, open the JPG to WebP tool. For PNG, use PNG to WebP.

Drop your file, adjust the quality slider if needed (80% is a good default for photographs), and download the converted file. The tool uses the browser’s built-in canvas API for conversion — canvas.toBlob() with the image/webp MIME type — which means everything runs locally without uploading your files.

If you need to convert WebP back to JPG or PNG for compatibility with software or services that do not accept WebP, use the WebP to JPG or WebP to PNG tools.

The format landscape in 2026

JPG, PNG, WebP, and AVIF each have specific strengths and are appropriate in different contexts. The idea that one format will replace all others has not materialized.

For web delivery, WebP is the current reliable standard with AVIF gaining ground. For editing and archiving, PNG and TIFF remain the right choices. For email and cross-software compatibility, JPG is still the safest option.

Converting your web images to WebP is a straightforward technical improvement with measurable benefits. It is worth doing for anyone publishing content on the web in 2026.