Convert iPhone HEIC photos to WebP locally - small files, transparency kept, no upload.
Running locally on your device ...
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Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
HEIC is the default photo format on modern iPhones and saves space, but many programs do not open it directly. WebP is the modern web image format: it compresses very efficiently, supports transparency and is shown by every current browser - ideal to make iPhone photos small and web-ready.
This tool decodes HEIC entirely locally in your browser (libheif) and exports WebP via the native canvas. Your photos are not uploaded - the conversion works even in airplane mode. Use the quality slider to control file size.
Unlike JPG, WebP keeps any existing transparency, and at the same quality the file is usually smaller. If you need maximum compatibility with very old software, choose JPG; for the web and modern apps, WebP is the better choice.
| Input formats | HEIC, HEIF |
|---|---|
| Output format | WEBP |
| Batch processing | Yes |
| Processing | Locally in your browser (JavaScript) |
| File upload | None |
Limitations: Very large HEIC batches can use a lot of memory on older mobiles. Live Photos are converted as a still image. WebP keeps transparency; very old software may not open WebP.
No. HEIC is decoded entirely locally in the browser and exported as WebP.
Yes. WebP stores transparency and keeps it during conversion; a classic photo format without an alpha channel could not retain it.
At comparable quality, WebP is usually 25 to 34 percent smaller than JPG according to Google's own measurements, and it keeps transparency on top. JPG only wins with very old software that does not know WebP. For the web, messengers and modern apps, WebP is almost always the better choice.
Yes, with ZIP download.
A little, because HEIC and WebP are both lossy - the conversion re-encodes the image. From quality 80 upwards the difference is practically invisible to the naked eye. Keep the HEIC original as well for an archive; on the web what counts most is the much smaller file.