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Convert HEIC to WebP Online Free

From an iPhone photo to the right WebP for every screen.

A 12-megapixel HEIC is far larger than any web page needs, and only Safari shows HEIC at all. Open your photo and pick where it sits on the page. Your browser decodes it, then encodes a real WebP at every width the slot needs. You get the measured sizes, the srcset markup and a ZIP. No HEIC to hand? A generated 4032 × 3024 photo stands in, labelled as such.

landscapeGenerated stand-ingenerated 4032×3024 stand-in (not a HEIC) · Encoding 4 widths…
error
Full-width hero100vw on every screen
Article columnmax 720 px wide
Half-width card50vw, 100vw on phones
Thumbnail240 px everywhere
widthsizebytes
WebP quality80
html · sizes are the measured ones
Encoding…
deviceslot pxpicksloads
iPhone 15 · 390@3×1170 px……
Pixel 8 · 412@2.625×1082 px……
iPad Air · 820@2×1440 px……
MacBook Air · 1440@2×1440 px……
Office monitor · 1920@1×720 px……
27″ 4K at 150% · 2560@1.5×1080 px……
folder_zipEncoding…
~/hdr-doesnt-survive

The glow on your iPhone screen won't come along.

Since the iPhone 12, many HEIC photos carry a second, hidden image: a gain map that tells HDR screens how much brighter to show highlights. WebP stores one 8-bit picture with no gain map and no HDR transfer function, so the WebP shows the standard (SDR) version. That's the right fallback for the web, but it explains why skies and lamps look flatter. The rows on the right are read from your file and your screen.

HDR gain map in your photoOpen a HEIC to check.-
Bit depthWebP stores 8 bits per channel.8
Gain map in the WebPWebP has no auxiliary image or tone-map chunk.not possible
Your screenReports standard range: the WebP will look the same as the HEIC here.SDR
To keep HDR on the webAVIF and JPEG with an ISO 21496-1 gain map (Ultra HDR) can carry it; check support for your audience.use AVIF
~/what-gets-left-behind

Location, camera, colour profile: you decide what travels.

A photo published on the web with EXIF intact tells anyone where it was taken. A canvas-made WebP keeps nothing, which is safe but loses the copyright line and camera data too. This page rebuilds the WebP container (VP8X) so it can carry the EXIF you choose, with the location wiped byte by byte and the orientation reset because the pixels are already upright.

keep all EXIFEXIF without locationno metadata
in the HEICvaluein the WebP
Your photoOpen a HEIC to fill this table. The stand-in has no metadata.-
WebP written, chunks: RIFF · VP8X · ICCP · VP8
~/webp-or-avif

WebP, AVIF or JPG for this photo?

The 1280-wide copy of your photo was encoded by your browser in every web format it can write, then decoded and scored against the original. AVIF is usually smallest at equal quality and keeps HDR, but not every browser can write it from a page. Where it can't, the row says so rather than guessing.

At 1280×960: WebP is smallest here at 10 KB. AVIF decoding in this browser: untested, because it couldn’t write one. For most sites WebP is the safe choice today; serve AVIF first inside if your audience supports it.

Measuring…
~/other-routes

Other places this photo might be going.

Frequently Asked Questions

Is converting HEIC to WebP free?

Yes, HEIC to WebP conversion is completely free with no signup, no watermark, and no usage limit. Convert as many files as you need.

Are my files uploaded to a server?

No. The HEIC to WebP converter runs in your browser when your file is supported there, so the file stays on your device for that workflow, reducing server exposure for that workflow. If the file is sensitive, check the processing mode first.

How long does HEIC to WebP conversion take?

Most HEIC to WebP conversions finish in under a minute. Bigger files take longer, in proportion to their size. There is no queue to join and no account to make first.

Will the conversion reduce file quality?

Depends on what you are converting between. Go lossless to lossless and the picture or the audio comes out untouched. Go to a lossy format and you give up a little to get a smaller file.

Does this work on mobile devices?

Yes. The HEIC to WebP converter works on phones, tablets, and desktops in any modern browser including Chrome, Safari, Firefox, and Edge.