JPG to WebP Converter

Convert JPG to WebP for 25-34% smaller files at the same visual quality. Free and browser-based.

Drag & drop files here

or Browse Files

Max file size: 10MB · Max 2 files at once

JPG has been the default photo format for decades, but WebP gives you the same visual quality in a file that is 25-34% smaller. If you run a website or blog, switching from JPG to WebP can measurably improve your page load speed. ConvertFile handles the conversion in your browser. No uploads, no waiting.

How to Convert

Select or drag and drop your JPG file

Adjust quality if needed

Click Convert and download your WebP file

Why Convert JPG to WebP?

WebP produces files that are 25-34% smaller than JPG at the same visual quality, according to Google's compression study. For a website serving 100 images, that translates to meaningful bandwidth savings and faster page loads.

WebP also supports transparency, which JPG cannot. If you need a compressed photo with a transparent background, WebP is the only option besides PNG. All major browsers have supported WebP since 2020, so there is no compatibility barrier for web use.

JPG vs WebP Comparison

Aspect	JPG	WebP
Compression	Lossy	Lossy + Lossless
File Size (lossy)	Baseline	25-34% smaller
Transparency	No	Yes
Best For	Universal sharing	Web publishing, performance
Browser Support	All browsers	All modern browsers (since 2020)
Animation	No	Yes

What is JPG?

JPG (JPEG) is the most widely used image format on the web. It uses lossy compression to produce small files, discarding visual information that the human eye is unlikely to notice. At 85-90% quality, most people cannot tell the difference between a JPG and the original. JPG does not support transparency, and re-saving a JPG repeatedly causes gradual quality loss, a process called generation loss.

What is WebP?

WebP is an image format developed by Google in 2010. It supports both lossy and lossless compression, transparency, and even animation in a single format. Lossless WebP files are 26% smaller than equivalent PNG files. Lossy WebP files are 25-34% smaller than equivalent JPG files. All major browsers have supported WebP since 2020, including Chrome, Firefox, Safari, and Edge.

Your Files Stay on Your Device

ConvertFile uses the HTML5 Canvas API to convert images directly in your browser. Your JPG files are never uploaded to a server. The conversion runs on your device's hardware, which is why it finishes in under 2 seconds. Once you close the tab, the converted files are gone from memory.

Frequently Asked Questions

How much smaller is WebP than JPG?

WebP lossy images are 25-34% smaller than JPG at the same visual quality. The exact savings depend on the image content and quality setting. Photos with large areas of similar color see the biggest reductions.

Is there quality loss when converting?

The conversion re-encodes the image, which introduces minimal additional compression. At 80-90% quality, the difference between the JPG source and WebP output is not visible to the human eye.

Should I use WebP instead of JPG on my website?

For most websites, yes. WebP gives you smaller files with the same visual quality, which improves page load speed and Core Web Vitals scores. All modern browsers support WebP.

Is the conversion private?

Yes. All processing happens in your browser using the Canvas API. No files are uploaded to any server.

Can I set the output quality?

Yes. The quality slider goes from 1% to 100%. For photographs, 75-85% gives the best balance between file size and visual quality. Going above 90% gives diminishing returns.

What quality setting should I use for my website?

Most web developers use 75-85% for hero images and 60-75% for thumbnails. Test a few settings with your actual images to find the right balance for your content.

Can I convert WebP back to JPG?

Yes. ConvertFile also has a WebP to JPG converter. Keep in mind that each lossy re-encoding introduces a small amount of quality loss.

Will the image dimensions change?

No. The output WebP has the exact same width and height as the input JPG. Only the file format and compression method change.

Related Tools

WebP → JPG

PNG → WebP

JPG → PNG

Why Convert JPG to WebP?

Aspect

JPG

WebP

Compression

Lossy

Lossy + Lossless

File Size (lossy)

Baseline

25-34% smaller

Transparency

Yes

Best For

Universal sharing

Web publishing, performance

Browser Support

All browsers

All modern browsers (since 2020)

Animation

Yes