HEIC to JPG Converter — Open iPhone Photos on Windows, Web, Anywhere

How to Convert HEIC from iPhone to JPG — Step-by-Step

The tricky part isn't the conversion — it's getting the .HEIC files off the phone without iOS quietly converting or re-compressing them. Here are the three routes people actually use, from a Mac, a Windows PC, and straight from the browser.

AirDrop to a Mac (keeps the original .HEIC)

1. On the iPhone, open Photos and select the shots you want.
2. Tap the Share icon → AirDrop → your Mac.
3. They land in Downloads as real .HEIC files. Drag them into the box above and download JPGs.

One catch: AirDrop honors your Settings → Photos → Transfer to Mac or PC choice. Set it to Keep Originals and you get untouched .HEIC; leave it on Automatic and the phone may hand over a JPG already — in which case you can skip this tool entirely.

iCloud / Windows PC (download the originals)

1. Open iCloud.com → Photos in any browser, or the iCloud for Windows app.
2. Select your photos and click Download. Hold the option and choose Unmodified Originals to get the .HEIC rather than a converted copy.
3. Drop the downloaded .HEIC files into the converter above.

A USB cable works too: on Windows, the DCIM folder shows the raw.HEIC files, which you can copy off and convert here.

Direct from the iPhone browser (no computer)

1. Open this page in Safari or Chrome on the iPhone.
2. Tap the drop zone → Photo Library and pick your shots.
3. They convert on-device and download as JPGs to Files. Nothing is uploaded — the decode and re-encode run in the phone's browser.

Note that iOS sometimes converts a HEIC to JPG as it hands it to the picker, so the file may already be a JPG before it reaches the converter. That's fine — you still get a usable JPG either way.

What actually happens when HEIC becomes JPG

A .HEIC file isn't really an "image format" in the way JPG is. It's a HEIF container — a small wrapper that holds one or more frames compressed with HEVC, the same codec used for 4K video. To convert to JPG the browser has to unpack the container, run the HEVC decoder over the frame, then hand the raw pixels to the JPG encoder. Three things change along the way:

• Color depth drops from 10-bit to 8-bit. HEIC can store 1,024 brightness levels per channel; JPG can only store 256. For sunsets, dim interiors, or skin tones this is where subtle banding can creep in.
• Sidecar items get discarded. A single .HEIC can hold a depth map (for Portrait Mode), an auxiliary alpha image, burst-mode siblings, and a thumbnail. JPG keeps only the main picture.
• Compression becomes less efficient. Expect the JPG to be roughly 1.5–2× larger than the original .HEIC for the same visible quality. A 3 MB iPhone photo typically lands between 4 MB and 6 MB as a JPG at quality 92.

Quality vs. file size: what each setting actually costs

The quality slider on the converter is the one knob that matters, and its cost isn't linear. The table below is measured output from this page's own encoder — the same photograph saved as JPG at three settings:

Measured on a 1200 × 1600 (1.9 MP) photographic HEIC run through the converter above. Absolute sizes scale with your photo's pixel count — a full 12 MP iPhone shot is roughly 6× the pixels, so multiply accordingly — but the ratios between settings hold.

The takeaway: quality 80–90 is the sweet spot. Below 80 you start to see mosquito noise around hair, eyelashes, and high-contrast edges; above 95 the file grows sharply for almost no visible benefit, because JPG's discrete cosine transform plateaus. The converter defaults to 92 for exactly this reason. Push to 95+ only when a photo is going to a printing service; drop to 80 when you're attaching to email or pasting into a doc and size matters more than pixel-peeping.

Who actually needs HEIC → JPG (and when to skip it)

The conversion is almost always about compatibility, not quality. Typical scenarios:

• Sending vacation photos to a relative on a Windows PC who doesn't want to install Microsoft's HEIF extensions.
• Uploading proof-of-damage photos to an insurance or banking portal that rejects .HEIC.
• Attaching photos to a Gmail / Outlook message — most webmail clients silently fail to preview HEIC.
• Importing into older Lightroom, Photoshop CS6, or any Linux image viewer without GStreamer's HEVC plugins.
• Posting to a forum, MLS listing, eBay, Etsy, or any CMS whose uploader checks the file extension rather than the MIME type.

You can skipthe conversion when you're only sharing between Apple devices, sending via iMessage, or uploading to any modern social app — Instagram, X, Facebook, Reddit, Discord all accept HEIC and convert server-side.

How to stop iPhone from using HEIC in the first place

1. Open Settings on your iPhone
2. Scroll to Camera → Formats
3. Choose Most Compatible instead of High Efficiency

This roughly doubles the storage each photo uses but means future shots are JPG out of the camera. For the .HEICs already on your phone, the converter above is faster than transferring everything to a Mac just to re-export.

Frequently asked questions

For the deeper format comparison — file size, where each format breaks, and when keeping HEIC is the right call — see HEIC vs. JPG: what's the difference?