Free Online WebP Converter
Convert PNG, JPEG, AVIF, and other images to WebP format. Modern compression with superior quality—everything happens in your browser.
DROP YOUR IMAGES HERE
or click to browse files
Supports PNG, JPEG, AVIF, GIF, BMP • Up to 10 images
All processing local + server-side transient, no files stored.
How To Convert Images to WebP
Drop Your Source Images
Drop any PNG, JPEG, or AVIF file into the upload area. Everything is read locally on your device.
Set Your Quality Target
Use the quality slider to balance file size and sharpness. 80% works great for most photos. Transparency is preserved automatically.
Grab Your WebP Files
Save files one by one or download everything as a single ZIP archive.
TIP: WebP offers the best compression for web images while supporting transparency. Use 75-85% quality for photos, or higher for graphics with transparency.
Key Features
Smarter Compression
WebP typically shaves 25-35% off a comparable JPEG without any visible difference to the naked eye. Your pages load noticeably faster.
Built-In Transparency
Unlike JPEG, WebP carries a full alpha channel. You get the see-through backgrounds of PNG at a fraction of the file weight.
Nothing Leaves Your Device
The entire conversion runs locally in your browser tab. No server uploads, no cloud processing, no data collection of any kind.
Near-Instant Results
The WebAssembly encoder works in the background and finishes most images within a second or two, even on modest hardware.
One-Click ZIP Export
Convert an entire folder of images and pull them all down in a single ZIP file. No clicking through one at a time.
Works Everywhere That Matters
Chrome, Firefox, Safari, and Edge all render WebP natively now. It is the format Google explicitly recommends in Lighthouse audits.
Quality vs Size Guide
Interactive demo: See how quality affects file size in real-time
Sample: 2MB Photo
Quality Recommendations
Professional printing • Archival • Large files
Portfolio • Social media • Good balance
Websites • Fast loading • Recommended
Thumbnails • Previews • Visible quality loss
Frequently Asked Questions
It depends on the source, but most JPEG photos drop by about 25-35% when converted to WebP at the same perceived quality. PNGs with flat colors can shrink even more dramatically. You will genuinely notice the difference in page load times if you are serving dozens of images.
For product shots and blog images, somewhere around 75-85% hits the sweet spot. The files come out noticeably lighter while still looking crisp on retina screens. If you are converting icons or logos that started as PNGs, you can push up to 90% since those tend to be smaller files anyway.
Yes, and that is one of the biggest selling points. A PNG logo with a transparent background converts into a WebP that is typically 30-50% smaller while keeping every bit of the transparency intact. JPEG sources obviously have no transparency to carry over.
Not really, not anymore. Chrome, Firefox, Edge, and Safari all support WebP natively as of 2023. The only holdout is very old browsers that almost nobody uses. For maximum safety, you can still use a picture tag with a JPEG fallback, but most teams skip that step now.
There is zero risk because nothing gets uploaded. The conversion happens entirely inside your browser using a local WebAssembly encoder. Your files never touch our servers, and closing the tab wipes everything from memory. Think of it like editing a photo in a desktop app, except it runs in a tab.