JPEG vs WebP: Complete Format Comparison for 2025

JPEG vs WebP: Quick Summary

WebP wins for web use. It produces 25-35% smaller files than JPEG at equivalent visual quality, supports transparency, and has 97%+ browser support. JPEG remains relevant for universal compatibility and editing workflows.

File Size Comparison

This is the core reason to switch from JPEG to WebP. At the same perceived quality:

Image Type	JPEG Size	WebP Size	Savings
Photograph (1200x800)	350KB	230KB	34%
Product photo (800x800)	180KB	120KB	33%
Hero banner (1920x1080)	620KB	400KB	35%
Thumbnail (400x300)	45KB	30KB	33%

These savings compound fast. A product page with 20 images saves 3-5MB per page load by switching to WebP.

Quality Comparison

At quality 80%, JPEG and WebP are visually indistinguishable in normal viewing. The technical differences:

JPEG uses DCT-based compression with 8x8 pixel blocks. At low quality, you see blocky artifacts.
WebP uses VP8 predictive coding, which handles gradients and edges better. Artifacts at low quality are smoother and less noticeable.

At quality 50%, WebP looks noticeably better than JPEG — the artifacts are less blocky and distracting.

Feature Comparison

Feature	JPEG	WebP
Lossy compression	Yes	Yes
Lossless compression	No	Yes
Transparency (alpha)	No	Yes
Animation	No	Yes
Color depth	8-bit	8-bit
Max dimensions	65,535 x 65,535	16,383 x 16,383
Browser support	100%	97%+
File extension	.jpg, .jpeg	.webp

WebP's transparency support is a significant advantage. With JPEG, you need a separate PNG for images with transparent backgrounds. WebP handles both use cases in one format.

Browser Support in 2025

WebP is supported by every modern browser:

Chrome — since 2014
Firefox — since 2019
Safari — since 2020
Edge — since 2018
Opera, Brave, Samsung Internet — all supported

The only browsers without WebP support are Internet Explorer (discontinued) and very old mobile browsers. For 97%+ of your visitors, WebP works perfectly.

When to Use JPEG

JPEG still makes sense in a few scenarios:

Email attachments — Email clients have inconsistent WebP support
Print workflows — Print software often expects JPEG or TIFF
Legacy system compatibility — Some CMS platforms or APIs only accept JPEG
Editing workflows — If you frequently re-edit images, JPEG avoids format conversion overhead

When to Use WebP

WebP is the better choice for:

Website images — Every type: heroes, thumbnails, product photos, blog images
E-commerce — Faster product pages = higher conversion rates
Social media content — Most platforms now accept and display WebP
Progressive Web Apps — Save storage and bandwidth on mobile
Any performance-sensitive context — Where file size directly impacts user experience

SEO Impact

Google has explicitly recommended WebP as a way to improve page speed. The connection to rankings is direct:

Smaller images → faster page loads
Faster pages → better Core Web Vitals scores (especially LCP)
Better Core Web Vitals → higher search rankings

For image-heavy sites like e-commerce stores and portfolios, switching to WebP can improve LCP by 1-3 seconds.

How to Convert JPEG to WebP

The easiest way is to use a browser-based converter:

Go to PixelPress JPEG to WebP converter
Drag and drop your JPEG files (up to 50 at once)
Set quality to 80% for optimal balance
Download individual files or all as a ZIP

Everything happens locally in your browser — your images never get uploaded to any server.

The Verdict

For web use in 2025, WebP is the clear winner. The 25-35% file size savings translate directly to faster websites, better SEO, and improved user experience. JPEG remains useful for offline and legacy compatibility, but there's no performance reason to serve JPEG images on the web anymore.

Ready to make the switch? Convert your JPEG images to WebP — free, instant, and private.