Why convert straight to WebP instead of going through JPG?

Because each lossy re-encode discards a little more detail. Converting HEIC to JPG and then JPG to WebP puts your photo through two lossy steps, producing a file that is both slightly worse and often slightly larger than a single direct conversion. This page decodes the HEIC and encodes WebP with nothing in between.

Do all browsers support WebP?

Every current browser does — Chrome, Edge, Firefox, Safari and their mobile versions. Support in Safari arrived in 2020, so the only devices that struggle are ones running very old operating systems.

Will the WebP be smaller than the HEIC?

Often not, and that is expected. HEIC and WebP are both modern, efficient formats, so the size usually lands close to where it started. You are not converting for size here — you are converting because browsers render WebP and do not render HEIC.

How much smaller is WebP than JPG?

On our fixed test image, converting the same source to WebP produced a file about 40% smaller than the JPG at comparable settings. Your own results will vary with the content: photographs with lots of fine texture narrow the gap.

Where should I not use WebP?

Anywhere the file leaves your control. Photo viewers, print services, older editors and plenty of upload forms still reject WebP. For anything you are handing to another person, HEIC to JPG is the safer destination.

Is my photo uploaded?

No. Both the HEIC decode and the WebP encode run in this browser tab, in a Web Worker. The Uploaded readout beside the result measures the page's own outbound requests, so a successful conversion shows 0 B.

Does WebP support transparency?

Yes, unlike JPG. Where your source image has an alpha channel, it is preserved.

Can I convert a whole camera roll at once?

You can add as many files as you like — there is no upload, so no queue and no cap. The practical limit is memory. Several hundred photos at once may exhaust a phone; a laptop copes with far more.

Is there a size limit or a watermark?

Neither. No limit is imposed because no bandwidth or storage is being paid for, and nothing is added to your image.

Does it work offline?

Often, but it is not guaranteed. The page and codecs are cached by your browser after first use, so later conversions may work with no connection. There is no service worker here, so this is a convenience rather than a promise.

What quality setting should I use for a website?

82 is a good default and is what this page uses. Below about 60 you will start to see softening in areas of flat colour. Above 90 you pay for file size that most visitors will never perceive.

Does the conversion keep EXIF data like the capture date?

Most metadata is not carried across. For web images that is usually desirable — it strips GPS coordinates you probably did not intend to publish. Keep the original HEIC if you need the data.

Convert HEIC to WebP

iPhone photos, ready for the web, in a single step. Decoded and re-encoded on your own machine — nothing is uploaded.

ReadyHEIC → WEBP

Uploaded0 B

What next

How do I convert HEIC to WebP?

To convert a HEIC photo to WebP, drop the file onto this page and download the WebP it returns. The conversion happens in one step inside your browser, with no intermediate JPG, so no quality is lost to a second re-encode. Nothing is uploaded, there is no size limit, and no account is needed.

How to do it

Open the converter. Open this page in any modern browser. WebP encoding runs locally, so nothing is installed and nothing is transmitted.
Add your HEIC photos. Drag them onto the panel or click to choose. Batch conversion is fine — the only limit is your device's memory.
Set the quality. The default of 82 suits web use. WebP holds detail better than JPG at the same setting, so there is rarely a reason to go higher.
Download the WebP. Take the file and drop it straight into your site. The Uploaded readout confirms that nothing left the browser during the conversion.

At a glance

Converts	HEIC to WebP
Transparency	Preserved
Compression	Lossy — quality is adjustable, default 82
Where it runs	In this browser tab. The file is not uploaded
File size limit	None imposed — your device memory is the ceiling
Cost	Free
Account needed	No
Watermark	None
Works offline	Usually after first use, but not guaranteed — there is no offline app

Why convert HEIC straight to WebP?

If you are putting iPhone photos on a website, WebP is where they should end up: every current browser supports it, and it is meaningfully smaller than JPG at the same visual quality.

The tempting route is HEIC to JPG and then JPG to WebP, because those are the conversions people already know about. Avoid it. Each lossy-to-lossy step discards a little more detail, so two steps give you a file that is both slightly worse and slightly larger than one step would have produced.

This tool decodes the HEIC and encodes the WebP directly, with nothing in between.

What size should I expect?

HEIC and WebP are both modern and both efficient, so the file size usually lands close to where it started — sometimes a little above. That is normal, and it is not a sign the conversion went wrong.

You are not converting for size here. You are converting because browsers render WebP and do not render HEIC.

Where the saving does show up is against JPG. On the fixed test image used for all measurements on this site, WebP came out roughly 40% smaller than JPG from the same source.

Where does WebP not belong?

WebP is a web format. Photo viewers, print services, older editors and plenty of upload forms still reject it.

Convert to WebP for images that will live on a site you control. For anything you are handing to another person, HEIC to JPG is the safer destination, and for an editable master copy, HEIC to PNG.

Questions

Why convert straight to WebP instead of going through JPG?: Because each lossy re-encode discards a little more detail. Converting HEIC to JPG and then JPG to WebP puts your photo through two lossy steps, producing a file that is both slightly worse and often slightly larger than a single direct conversion. This page decodes the HEIC and encodes WebP with nothing in between.
Do all browsers support WebP?: Every current browser does — Chrome, Edge, Firefox, Safari and their mobile versions. Support in Safari arrived in 2020, so the only devices that struggle are ones running very old operating systems.
Will the WebP be smaller than the HEIC?: Often not, and that is expected. HEIC and WebP are both modern, efficient formats, so the size usually lands close to where it started. You are not converting for size here — you are converting because browsers render WebP and do not render HEIC.
How much smaller is WebP than JPG?: On our fixed test image, converting the same source to WebP produced a file about 40% smaller than the JPG at comparable settings. Your own results will vary with the content: photographs with lots of fine texture narrow the gap.
Where should I not use WebP?: Anywhere the file leaves your control. Photo viewers, print services, older editors and plenty of upload forms still reject WebP. For anything you are handing to another person, HEIC to JPG is the safer destination.
Is my photo uploaded?: No. Both the HEIC decode and the WebP encode run in this browser tab, in a Web Worker. The Uploaded readout beside the result measures the page's own outbound requests, so a successful conversion shows 0 B.
Does WebP support transparency?: Yes, unlike JPG. Where your source image has an alpha channel, it is preserved.
Can I convert a whole camera roll at once?: You can add as many files as you like — there is no upload, so no queue and no cap. The practical limit is memory. Several hundred photos at once may exhaust a phone; a laptop copes with far more.
Is there a size limit or a watermark?: Neither. No limit is imposed because no bandwidth or storage is being paid for, and nothing is added to your image.
Does it work offline?: Often, but it is not guaranteed. The page and codecs are cached by your browser after first use, so later conversions may work with no connection. There is no service worker here, so this is a convenience rather than a promise.
What quality setting should I use for a website?: 82 is a good default and is what this page uses. Below about 60 you will start to see softening in areas of flat colour. Above 90 you pay for file size that most visitors will never perceive.
Does the conversion keep EXIF data like the capture date?: Most metadata is not carried across. For web images that is usually desirable — it strips GPS coordinates you probably did not intend to publish. Keep the original HEIC if you need the data.

About these formats

Sources

WebP — an image format for the web — Google
WebP browser support — Can I Use
Using HEIF or HEVC media on Apple devices — Apple