Convert JPG to WebP Online Free

How JPG to WebP works

Upload JPG

Drag & drop or click to select your JPG file.

Choose Options

Adjust quality, size, or other output settings if needed.

Download WebP

Click Convert and your WebP file downloads instantly.

About JPG to WebP conversion

WebP is Google's answer to more efficient web image delivery. It uses a more sophisticated prediction and entropy coding model than JPEG, producing files that are 25–34% smaller at the same perceived visual quality. For web developers, smaller images translate directly into better Core Web Vitals scores - Particularly Largest Contentful Paint (LCP) - And lower bandwidth costs for both you and your visitors.

Unlike JPEG, WebP supports transparency (alpha channel) and lossless compression modes in the same format. A single WebP file can replace both a JPEG (for photos) and a PNG (for graphics needing transparency), simplifying your asset pipeline. The lossy WebP encoder also handles gradients and detailed textures more cleanly than JPEG at equivalent file sizes.

As of 2025, WebP has over 97% global browser support, including all versions of Chrome, Firefox, Edge, Opera, and Safari 14+. For the rare cases where you need to support older browsers, you can use the HTML element to serve WebP to modern browsers and fall back to JPG automatically.

Where WebP comes from

WebP was released by Google in September 2010, derived from the VP8 video codec the company acquired with On2 Technologies earlier that year. The initial spec only supported lossy compression; lossless and alpha-channel support were added in 2011, and animated WebP arrived in 2012. Adoption stalled until Apple finally shipped WebP support in Safari 14 (September 2020) and macOS Big Sur, which made WebP viable as a primary web format. Today Google, Cloudflare, and Shopify all transcode JPEGs to WebP on the fly, and the format powers a meaningful share of every Core Web Vitals improvement story since 2021.

JPG vs WebP at a glance

	JPG	WebP
Compression	Lossy DCT (baseline JPEG)	Lossy VP8 or lossless
Transparency	None	Yes (alpha channel)
Typical file size (12 MP photo)	2-4 MB at Q85	0.8-1.6 MB at Q80 (25-35% smaller)
Animation support	No	Yes (animated WebP)
Browser support	Universal since 1994	Universal since 2020 (Safari 14+)
Best for	Legacy compatibility, print	Web/mobile hero images, e-commerce

Real-world workflow — Shopify store owner cuts Largest Contentful Paint in half

Export 240 product JPGs from Lightroom at 2000 px, Q85; total 580 MB.
Batch-convert to WebP at Q80 through jpg.now; total drops to about 210 MB.
Upload the WebP set to Shopify's CDN, keeping JPG originals as fallback in the theme's tag.
Run PageSpeed Insights before and after; LCP on the catalog page drops from 3.4 s to 1.7 s on mobile.
Set Cloudflare's Polish + WebP feature off, since assets are already pre-encoded and you don't want double work.

Recommended conversion settings

Use case	Settings
E-commerce product photos	Lossy Q80, sharp YUV, strip metadata
Blog hero images	Lossy Q75, 1600 px wide, embed sRGB
Logos with transparency	Lossless, alpha-quality 100
Image-heavy gallery thumbnails	Lossy Q65, 400 px, no metadata
Animation replacing a GIF	Animated WebP, Q70, key-frame every 30 frames

Where will your WebP file open?

Platform	JPG	WebP
macOS Preview	✓	✓
Windows Photos	✓	✓
Gmail (web)	✓	✓
Outlook desktop	✓	~
iOS Photos	✓	✓
Android Gallery	✓	✓
Adobe Photoshop	✓	~
Chrome / Safari 14+ / Firefox	✓	✓
Slack / Discord	✓	✓

When to convert JPG to WebP

Converting JPG to WebP is primarily a web performance decision. WebP delivers 25–35% smaller file sizes than JPG at equivalent visual quality, which translates directly into faster page loads, lower bandwidth costs, and better Core Web Vitals scores. Google specifically uses WebP in its Lighthouse audits and flags JPG images as optimisation opportunities when WebP is available.

E-commerce sites benefit most from this conversion. A catalogue with hundreds of product images can cut its total image payload by a third or more by switching to WebP. The same applies to photo-heavy blogs, news sites, and portfolio pages where large hero images are the dominant factor in load time.

Modern browsers - Chrome, Firefox, Edge, and Safari 14+ - All support WebP natively. If your audience uses recent software, you can serve WebP exclusively. For broader compatibility you can use the HTML <picture> element to serve WebP to supported browsers and JPG as a fallback, giving you the best of both.

JPG to WebP tips

Target 80–85% WebP quality for web images - This matches JPEG 90% quality at roughly 30% smaller file size.
Use WebP for hero images, product photos, and any image loaded above the fold - These have the greatest impact on page load speed.
If you need transparency, start from a PNG source rather than JPG, since the JPG background colour will be preserved in the WebP.
Run a quick visual comparison at 80% before deploying - Open the original JPG and the WebP side-by-side in a browser at 1:1 zoom to confirm quality is acceptable.
For e-commerce sites, converting all product images from JPG to WebP typically reduces total page weight by 20–40% with zero visible quality difference.

Why use this JPG to WebP converter

WebP output is typically 25–35% smaller than the source JPG

Adjustable quality slider from 1–100 for fine control over file size

Supported natively in Chrome, Firefox, Safari, and Edge since 2020

Files auto-deleted after 24 hours, nothing stored permanently

Related tools

JPG → PNG

Convert JPG to GIF Online

Formats involved

JPG – Joint Photographic Experts Group

JPG (JPEG) is the most widely used raster image format on the web. It uses lossy compression to reduce file size while maintaining acceptable quality - Perfect for photographs and images with smooth colour gradients.

JPG Converter

WebP – Web Picture Format (Google)

WebP delivers 25–35% smaller files than JPG at equivalent quality. Supported in all modern browsers and ideal for improving website performance and Core Web Vitals.

WebP Converter

JPG to WebP tips

WebP at quality 80 is visually identical to JPG at quality 85 but 25–35% smaller — use it for any web-facing image.
If you need transparency in the output, note that WebP supports alpha channels — JPG does not.
Check your target audience: WebP is fully supported in Chrome, Firefox, Safari, and Edge, but older iOS versions before 14 do not support it.

JPG to WebP — frequently asked questions

Typically 25–35% smaller at equivalent visual quality. A 500 KB JPG often converts to a 320–380 KB WebP that looks identical on screen. Read more: What Is WebP? Everything You Need to Know

WebP has 97%+ global browser support as of 2025. Chrome, Firefox, Edge, Opera, and Safari 14+ all support it natively. For older browsers, use a

Yes. Modern WordPress (6.1+) supports WebP natively. Older installs may need the WebP Express plugin. Most page builders and themes support WebP without changes. Read more: What Is WebP? Everything You Need to Know

At quality 80%+, the visual difference is imperceptible to the naked eye. Side-by-side at 1:1 pixel view you may notice minor differences in fine texture, but not at normal viewing scale. Read more: What Is WebP? Everything You Need to Know

Yes, WebP supports animation (like GIF) but with much better compression and quality. However, this tool converts static JPG images to static WebP - Animated WebP requires a dedicated tool. Read more: What Is WebP? Everything You Need to Know