How do I convert HEIC to JPG without uploading my photos?

Use a converter that decodes HEIC in the browser. GhostImage bundles libheif compiled to WebAssembly, so the decode happens in a Web Worker on your device — there's no upload endpoint at all.

Why won't my iPhone photos open on Windows or the web?

iPhones shoot HEIC by default — a modern, efficient format that many apps, sites, and older versions of Windows don't accept. Converting to JPG makes the photo universally compatible.

Will the quality drop?

JPG is lossy, but at the default quality the difference is not visible for photos. You control the quality slider — higher keeps more detail, lower makes a smaller file.

Can I convert to PNG or WebP instead of JPG?

Yes. The same Convert step targets JPG, PNG, WebP, AVIF — or PDF, if you want the photo as a one-page document.

Can I convert many HEIC photos at once?

The convert step handles one photo at a time (and each result stays fully editable). For a whole set, run them through one by one — every conversion is free, so there's no cap to worry about.

Yes — free, no watermark, no signup, no limit on the number of photos.

HEIC to JPG, no upload.

Drop an iPhone photo and it's decoded and converted on your device — never sent to a server.

Convert iPhone HEIC/HEIF photos to JPG in your browser — no upload, no app, no signup. GhostImage decodes HEIC locally with a WebAssembly build of libheif (the small decoder loads once on first use), then re-encodes to JPG at the quality you choose. Because everything runs on your device, your camera roll never touches a server. You can also pick PNG, WebP, or AVIF as the target — or turn the photo straight into a PDF — from the same Convert step.

How it works

1
Drop your HEIC photo
Drag a .heic or .heif file onto the page or click to browse. It opens in the GhostImage studio with Convert to JPG pre-selected.
2
It decodes on your device
A WebAssembly HEIC decoder runs in a Web Worker in your browser — the photo is never uploaded. Adjust the JPG quality slider if you want.
3
Download the JPG
Save the converted photo, or keep editing — resize, crop, compress, or strip metadata in the same tab.

Frequently asked questions

How do I convert HEIC to JPG without uploading my photos?
Use a converter that decodes HEIC in the browser. GhostImage bundles libheif compiled to WebAssembly, so the decode happens in a Web Worker on your device — there's no upload endpoint at all.
Why won't my iPhone photos open on Windows or the web?
iPhones shoot HEIC by default — a modern, efficient format that many apps, sites, and older versions of Windows don't accept. Converting to JPG makes the photo universally compatible.
Will the quality drop?
JPG is lossy, but at the default quality the difference is not visible for photos. You control the quality slider — higher keeps more detail, lower makes a smaller file.
Can I convert to PNG or WebP instead of JPG?
Yes. The same Convert step targets JPG, PNG, WebP, AVIF — or PDF, if you want the photo as a one-page document.
Can I convert many HEIC photos at once?
The convert step handles one photo at a time (and each result stays fully editable). For a whole set, run them through one by one — every conversion is free, so there's no cap to worry about.
Is it free?
Yes — free, no watermark, no signup, no limit on the number of photos.

Related image tools

Compress

Resize

Crop

Every GhostImage tool runs entirely in your browser. Your file is never uploaded — there's no upload endpoint to send it to.