Convert HEIC to WebP Online — Free
Convert HEIC to WebP for a small, modern, web-friendly format. Ideal for embedding iPhone photos on websites, blogs, or e-commerce product pages.
How to convert HEIC to WebP
- 1
Add your HEIC file
Drop or select a .heic file. Files up to 50MB process locally in your browser — nothing uploaded.
- 2
Run the conversion
Your HEIC decodes inside a Web Worker via the libheif-wasm decoder, then re-encodes to WebP at your chosen quality. The result is a small, web-ready file that preserves good visual quality — perfect for web embedding.
- 3
Download your WebP
One click saves the result as a .webp file. Your original file stays on your device.
Why convert HEIC to WebP?
WebP is an excellent web image format with broad browser support, but no non-Apple browser can display HEIC. For sharing iPhone photos on a website, blog, or any web page, WebP gives you the smallest file size with the broadest device compatibility — typically 3-5× smaller than equivalent JPG at matched visual quality.
Common HEIC to WebP use cases
- Publishing iPhone photos to a WordPress blog or Ghost site where WebP is supported and loads fast on mobile
- Uploading product photos shot on iPhone to a Shopify or WooCommerce store with WebP optimization enabled
- Embedding iPhone portraits in a Notion page, Substack post, or Medium article (all accept WebP)
- Preparing iPhone photos for a React or Next.js site using next/image with WebP as the delivered format
What file size to expect
A 12-megapixel iPhone HEIC (1.5-2.5 MB) becomes a WebP of roughly 200-500 KB at quality 80 — about 5-10× smaller than a JPG would be, with no visible quality loss at normal viewing distances. For retina-ready hero images at quality 90, expect 600-900 KB.
Technical notes: HEIC → WebP
Both HEIC and lossy WebP are DCT-based lossy codecs, so the conversion is 'lossy → lossy' — some quality is lost, though the visual difference is imperceptible at WebP quality 80+. HEIC's wide color gamut (Display P3) is tone-mapped to 8-bit sRGB during the Canvas stage. Alpha is preserved if present (rare in iPhone HEICs). The WebAssembly HEIC decoder (~1.5MB) downloads once and caches; WebP encoding uses the browser's native encoder.
Compatibility and browser support
WebP is supported in Chrome 23+, Firefox 65+, Safari 14+ (iOS 14+), Edge 18+, and Opera 12.1+ — over 96% global coverage. Safari on iOS 13 and older can't decode WebP; serve a JPG fallback there. The HEIC decoder works in any browser that supports WebAssembly (all modern browsers since 2017).
HEIC vs WebP
| HEIC | WebP | |
|---|---|---|
| File size | Very small (efficient codec) | Smallest at equivalent quality |
| Quality | Lossy | Lossy or lossless |
| Transparency | No | Yes |
| Browser / app support | Apple ecosystem, limited elsewhere | Modern browsers (Chrome, Firefox, Safari, Edge) |
| Best for | iPhone photo storage | Web images, performance-focused sites |
Related conversions
Frequently Asked Questions
Lossy or lossless?
Lossy — adjustable via the quality slider. At 80%+ the difference from the source HEIC is imperceptible. Lossless WebP of a photo would be huge (similar to PNG size) so it's not the default.
What's the final size?
WebP output from a 12MP iPhone HEIC is typically 200-500 KB at quality 80, or 600-900 KB at quality 90. 3-5× smaller than equivalent JPG.
Browser support for WebP?
Over 96% global coverage — Chrome, Firefox, Safari 14+, Edge, and Opera. iOS 13 and older Safari need a JPG fallback.
Can I keep EXIF or GPS?
No — Canvas-based conversion drops metadata. For EXIF preservation, use a desktop tool like ExifTool plus libheif + cwebp.
Why does the first conversion take longer?
The HEIC decoder (~1.5MB) downloads on first use. Subsequent conversions use the cached decoder and are near-instant.
Better for web than HEIC → JPG?
For web use, yes — WebP is 3-5× smaller at equivalent visual quality. For maximum compatibility (email, Office, older platforms), JPG is still safer.