How to Convert JPG to WebP for Smaller Files on Websites

Yes — and for the web, WebP is the modern successor to JPG. WebP at equivalent quality is typically 25–35% smaller than JPG, and every modern browser supports it. The smaller file size means faster page loads and less bandwidth.

Last updated: 2026-07-19

Why convert JPG to WebP

JPG has been the universal photo format since 1992. WebP is the modern web format, designed for the same use cases but with better compression:

3 ways to convert JPG to WebP

1. Use Photoshop, Affinity, or cwebp CLI

Photoshop (2020+) and Affinity Photo can open JPG and export as WebP. The cwebp command-line tool from Google is the standard for batch JPG → WebP conversion, but it's a command-line tool, not a GUI. Photoshop and Affinity are paid; cwebp requires comfort with the terminal.

2. Use an online JPG to WebP converter

CloudConvert, Convertio, and Squoosh convert JPG uploads to WebP. They work for one-off files but every image uploads to a server. Most cap file size at 25–100 MB. Your images sit on a stranger's server during the conversion.

3. Use EasyImg (desktop, local, batch)

EasyImg is a desktop app for Windows and Mac that converts JPG to WebP entirely on your computer. Drag in a folder of JPGs, pick WebP, click Convert. WebP at quality 80 (default) is about 25–35% smaller than the source JPG with no visible difference. A typical JPG converts in about 0.3 seconds; 200 images finish in a minute. EXIF is preserved by default. No upload, no queue, no file size cap, no internet required.

How to convert JPG to WebP with EasyImg

1
Drop in your JPG files

Single files or folders. Photos and graphics both work.

2
Pick WebP and set quality

Default 80 is visually identical to JPG at 25–35% smaller files. Slide higher for archival or print.

3
Click Convert

Files land in the same folder with .webp extension. Duplicates skipped, conflicts auto-rename.

JPG to WebP: which method is best?

Online converter Photoshop / cwebp CLI EasyImg (Desktop)
Privacy Uploaded to a third-party server Stays on your disk Stays on your disk
Speed per image 4–8 seconds 1–3 seconds (Photoshop) / faster via cwebp ~0.3 seconds
Batch 5–10 files at a time cwebp CLI: yes. Photoshop: action script. Whole folders at once
File size cap 25–100 MB No limit No limit
Ads / popups Banner ads, signup walls None None
Works offline No Yes (after install) Yes

JPG to WebP — common questions

WebP is typically 25–35% smaller than JPG at equivalent visual quality. The exact savings depend on the image — for photos with smooth gradients (sky, skin, foliage), WebP can be 40%+ smaller. For images with lots of sharp edges and text, the savings are smaller (10–20%) because JPG already handles those efficiently.
Both formats use lossy compression. At the same quality setting (e.g., WebP 80 = JPG 80), WebP is slightly better — the same visual quality at a smaller file size. If you set WebP to 80 and JPG was at 80, the WebP file will be smaller AND look the same. If you set WebP to 90, it's near-lossless for typical photos.
All modern browsers support WebP: Chrome (since 2014), Firefox (since 2019), Edge (since 2018), Safari (since version 14, 2020), and all mobile browsers. Pre-2020 browsers (old IE, old Safari) don't. For a typical site, 95%+ of users have a WebP-capable browser. If you need to support very old browsers, use a <picture> element with JPG fallback.
Yes — WebP supports EXIF, and EasyImg preserves it by default. Most online converters strip EXIF to save bandwidth. Note that for web use, EXIF is rarely displayed — most browsers don't show EXIF for WebP images anyway.
Usually no. For email, print, or sharing on platforms that don't accept WebP, JPG is the safer pick — it opens on every device. WebP is specifically the right choice for web use. If you want smaller files for archival, WebP lossless preserves every pixel exactly at smaller size, but most archival systems still prefer PNG/TIFF.
Yes. Drag a folder of 5,000 JPGs into EasyImg, pick WebP, click Convert. Even at 0.3 seconds per file, 5,000 files finish in about 25 minutes. The output is 25–35% smaller than the source JPG, which means a typical 1 GB folder of JPGs becomes about 700 MB of WebP at the same visual quality.

Other conversions you might need

PNG to WebPHEIC to WebPHEIC to JPGWebP to JPGHEIC to PNGAVIF to JPGWebP to PNGHEIC to JPEGAVIF to PNGPNG to JPG All formats →

Bottom line

For the web, WebP is the modern successor to JPG — same visual quality, 25–35% smaller files, every modern browser supports it. For non-web use (email, print, sharing), JPG is still the universal pick. If you regularly optimize web images, a local desktop tool like EasyImg is the fastest, most private, and most reliable way to do that conversion. Your images never leave your computer.

Why trust EasyImg

EasyImg is built for people who care where their photos go. Everything below is verifiable in the app itself.