Convert HEIC to WEBP Online Free

Putting iPhone photos on the web? AllConvert converts HEIC to WEBP instantly, right in your browser — giving you the smallest files at great quality. No upload, no account.

Why convert HEIC to WEBP?

Both HEIC and WEBP are modern, efficient formats — but only WEBP works in web browsers. If your destination is a website, blog, online store or web app, WEBP gives you the best of both worlds: the small file sizes you are used to from your iPhone, in a format every browser can actually display. Compared to converting to JPG, WEBP files are typically another 25–35% smaller.

What happens during the conversion?

AllConvert decodes the HEIC using a small open-source library downloaded on first use (about 1 MB), then re-encodes it as WEBP at 92% quality. Everything runs locally in your browser — your photo is never uploaded to a server.

Other options for iPhone photos

Sharing by email or chat? HEIC to JPG is the most universally compatible. Planning to edit the photo? HEIC to PNG keeps every pixel lossless.

How to convert

1. Drag your HEIC file into the converter box above, or click it to pick a file.
2. The photo is re-encoded to WEBP immediately, locally in your browser.
3. Hit the download button that appears to save the WEBP.

Nothing is uploaded during the conversion, and it behaves the same on iPhone, Android, and desktop browsers.

HEIC and WEBP use similar tricks, for different audiences

Both formats lean on video-codec compression instead of the older JPG-style DCT blocks — HEIC borrows from HEVC (H.265), WEBP borrows from VP8 — which is why both beat JPG at the same visual quality. The difference is where each one lives. HEIC was built for Apple's ecosystem and needs a licensed decoder almost nowhere else has, while WEBP was built by Google specifically for browsers, so Chrome, Firefox, Safari and Edge all read it natively. Converting HEIC to WEBP keeps most of that size advantage while swapping Apple-only support for support everywhere a browser runs.

Frequently asked questions

Which is better for the web: WEBP or JPG from HEIC?
WEBP. At the same visual quality, WEBP files are typically 25-35% smaller than JPG, which means faster page loads. All modern browsers display WEBP natively.

Does the conversion upload my photos?
No. The HEIC decoder and WEBP encoder both run in your browser via JavaScript — photos never leave your device.

Why is the first HEIC conversion slower?
The first conversion downloads a small open-source HEIC decoder library (about 1 MB) to your browser. After that, conversions run instantly without re-downloading.