Convert HEIC to WebP
HEIC in, WebP out, in a second or two — processed on your device, nothing uploaded. The iPhone photo format, finally usable everywhere.
Output format
What this tool does
It decodes your HEIC file and re-encodes the pixels as WebP at the quality you choose (92% by default — visually identical for photos). Decoding uses libheif compiled to WebAssembly (about 3 MB), loaded only when you actually drop a HEIC file; the photo itself never leaves your device. Rotation and Live Photo stills are handled; the Live Photo's video part is not included. The file is read, converted and offered back as a download without touching the network.
About HEIC
HEIC is the format iPhones and iPads have used for photos since iOS 11 (2017), and some Samsung and Canon devices since. It stores photos with the HEVC video codec at roughly half the size of JPEG for the same quality, plus extras like depth maps, Live Photo frames and 10-bit colour. It is good for saving space on your phone and keeping the full quality Apple devices capture; less good for sharing with anyone who isn't on a recent Apple device: Windows needs a paid codec, many websites, forms and older programs reject it outright, and Android support is mixed. Native on Apple devices and in Safari. Windows 10/11 need the "HEVC Video Extensions" from the Microsoft Store; Chrome, Firefox and most web uploads do not accept it.
About WebP
WebP is Google's web image format: it does lossy compression like JPEG and lossless like PNG, supports transparency in both modes, and files come out 25–35% smaller than the equivalent JPEG or PNG. Most websites now serve WebP, which is why you increasingly download images in it. It is good for anything on a web page — it is the practical default for the web today; less good for sending to people or programs that may not open it: older versions of Photoshop, many print shops and some office and e-mail tools still expect JPEG or PNG. All current browsers (Safari since 14 in 2020) and operating systems; patchy in older desktop software and some photo-printing services.
What changes going from HEIC to WebP
- Transparency is kept. Both formats support an alpha channel.
- Quality: WebP is lossy. At the default 92% nothing is visible; lower the slider for smaller files. Since HEIC is lossy too, this is a second generation of compression — keep quality high.
- Size: About half the size of an equivalent JPEG — a 12 MP photo is typically 1–2 MB vs. about a quarter to a third smaller than JPEG at the same visual quality; lossless WebP is typically 25% smaller than PNG.
- Metadata: EXIF (camera, date, GPS) is not carried over — the browser decodes pixels, not tags. That is a privacy plus for sharing and a minus if you rely on dates in the file.
Why anyone does this
WebP is the right target when the photo is going on a website: it keeps HEIC's small size advantage (unlike JPEG, which roughly doubles it) and every browser displays it. It is the wrong target for e-mailing to people or uploading to forms that expect JPEG.
How to convert HEIC to WebP
- Drop the HEIC file on the panel above or click to choose it.
- WebP is pre-selected; adjust the quality slider if you need a smaller file. Press Convert to WebP.
- Download. The file is named after the original with a
.webpextension.
Frequently asked questions
Is my HEIC file uploaded?
No. The page is static and has no upload endpoint; your browser does the work on your own device and the result is saved straight back to your disk. The site's Content-Security-Policy only allows it to talk to its own origin, so it cannot send your file anywhere even by accident. Load the page, disconnect from the internet, and it still works.
Does HEIC to WebP lose quality?
WebP is a lossy format, so strictly yes — but at the default 92% quality the difference from the HEIC is invisible at normal viewing size. Lower the slider only if you need a smaller file.
Will transparency survive?
Yes — WebP supports an alpha channel, so transparent areas of the HEIC stay transparent in the output. (Most HEIC photos are opaque anyway; it only matters for HEIF graphics.)
Is it free? Any limits or watermark?
Free, no account, no watermark, no daily quota. Because nothing runs on our servers there is nothing to meter. The only limits are your device's memory — anything up to roughly 50 megapixels is fine on a modern phone or laptop.
Can I do several files at once?
One file at a time at the moment — drop the next one as soon as you have downloaded the first. Batch processing with a ZIP in and out is planned.
Does it work on my phone?
Yes — iPhone, iPad and Android browsers all run it. On an iPhone you can also share the photo and choose "Save to Files" as JPEG; this page is for the HEIC files you already have. Large files take a few seconds longer on a phone than on a laptop.