Convert HEIC to WebP
iPhone photos in the web's own format — small, sharp, and converted without leaving your device.
Drop your image here
or
JPG, PNG, WebP, HEIC, SVG — any size, no upload
🔒 Files never leave your device — everything runs in your browser.
HEIC is what iPhones shoot; WebP is what websites want to serve. Both are modern, efficient formats — they just live in different worlds, and the web's world does not open camera files. Converting bridges the two directly, skipping the usual detour through a bulky JPG.
For publishing, WebP is the better destination than JPG: comparable quality at noticeably smaller sizes, which pages feel in their load time. The conversion decodes the HEIC and re-encodes it entirely in your browser — the photo goes from camera roll to web-ready without ever touching a server.
How it works
- Drop your file
Any common format, any size. Nothing is uploaded — the tool runs in your browser.
- Choose quality or size
Pick a quality preset, set an exact KB target, or switch the output format — tuned for heic to webp.
- Download
Your converted file is ready on your device — nothing to wait for, nothing to delete from a server.
Frequently asked questions
Why convert HEIC straight to WebP instead of to JPG first?
Every extra lossy step costs a little quality, and JPG's step also costs size. Going directly from the camera file to WebP is one clean encode producing a smaller file — better on both counts.
How much smaller is WebP than a JPG of the same photo?
Typically 25–35% at comparable visual quality. Multiplied over a gallery or a product page, that difference is what keeps a photo-heavy page fast.
Do my photos upload during conversion?
No — the HEIC decodes on your own device and the WebP is written there too. Nothing is sent anywhere, which is exactly how personal photos should be handled.
Is my file uploaded to a server?
No. ConvertUno runs entirely in your browser on your own device. Your file never leaves your computer or phone — there is no upload at all.
Is it really free, with no watermark?
Yes. Processing happens on your device, so serving you costs us almost nothing — no watermark, no account, no file-size limit, no daily quota.