Should I convert all my iPhone photos from HEIC to JPG?

No — only convert when you need cross-platform compatibility (sharing with Windows users, uploading to portals that don't accept HEIC, embedding in older software). HEIC stored in your iCloud Library takes half the space of JPG and round-trips edits without quality loss. For everyday use, leave them as HEIC; convert only when you have to.

What's the difference between HEIC and HEIF?

HEIF (High Efficiency Image Format) is the container format defined by MPEG; HEIC is Apple's specific file extension for HEIF files using HEVC compression. Other implementations of HEIF use different extensions (.heif, .avif). For practical purposes, HEIC files are a subset of HEIF — every HEIC is a HEIF, but not every HEIF is HEIC. iPhone produces HEIC specifically.

Can I edit a HEIC file on Windows?

Yes — install Microsoft's HEIF Image Extension from the Microsoft Store, then any image editor on Windows can open HEIC: Photoshop, Lightroom, Affinity Photo, GIMP. Older tools (Paint.NET, ancient Microsoft Paint) may still struggle. If you need universal compatibility, convert to JPG with PDFFlare's Convert Image tool before editing.

May 7, 20267 min read

What Is a HEIC File and Why Does iPhone Use It? (2026 Guide)

Q: Why doesn't my Windows PC open HEIC files?

Windows 10 and 11 don't support HEIC out of the box because Apple's HEVC codec requires a license. Microsoft offers a free HEIF Image Extension in the Microsoft Store that adds support to Photos and File Explorer; install it once and HEIC files open natively. Or convert to JPG before transferring — PDFFlare's Convert Image tool does it in your browser without uploading.

You AirDropped photos from an iPhone to a Windows PC and got a folder full of files with the strange .heic extension that nothing on your computer knows how to open. Or you uploaded to a job portal and the upload silently failed because the portal expected JPGs. So what is a HEIC file, why does iPhone insist on producing them, and when should you convert to a more universal format?

In this guide you'll learn what is a HEIC file in plain English, why Apple chose it as the iPhone default, how it stacks up against JPG and PNG, and how to handle it on every platform — including converting to JPG using PDFFlare's Convert Image tool when you need a universally-compatible file.

What Is a HEIC File, Exactly?

HEIC stands for High Efficiency Image Container — Apple's file extension for images stored in the HEIF (High Efficiency Image Format) container format, defined by the Moving Picture Experts Group (MPEG-H Part 12 / ISO/IEC 23008-12). The image data inside is typically encoded with HEVC (H.265), the same compression algorithm used for 4K video streaming.

The big advantage: HEIC files are roughly half the size of equivalent-quality JPGs. A photo that's 4 MB as JPG is ~2 MB as HEIC, with no visible quality difference. That space saving compounds — a 64 GB iPhone holding 16,000 HEIC photos would only fit 8,000 JPGs at the same quality.

Why Does iPhone Use HEIC by Default?

Why does iPhone use HEIC instead of JPG?

Apple switched the default in iOS 11 (2017) to take advantage of the iPhone's hardware HEVC encoder. Same picture, half the storage, faster iCloud uploads, smaller iCloud bills. The trade-off: HEIC isn't universally readable on non-Apple platforms, which is why you sometimes hit walls when sharing.

How is HEIC different from JPG?

HEIC supports modern features JPG can't: 16-bit color depth (vs. JPG's 8-bit, so much better gradients in skies), transparency (alpha channel like PNG), bursts and live photos packaged inside one file, and embedded per-image edit history. JPG is older and simpler — every system on earth opens it, but the file is bigger and the color space is narrower.

How to open a HEIC file on Windows or Android

Windows 10/11 doesn't open HEIC natively but Microsoft offers a free HEIF Image Extension in the Microsoft Store that adds support to Photos and File Explorer. Android handling depends on the manufacturer: newer Samsung, Pixel, and OnePlus phones running Android 12+ open HEIC out of the box; older devices need a third-party viewer. The simplest universal fix: convert to JPG using PDFFlare's Convert Image tool before sharing.

When You Should Convert HEIC to JPG

Uploading to job portals, gov forms, or older websites. Many backend systems have hardcoded JPG/PNG accept lists that silently reject HEIC. JPG is the safe choice.
Emailing to people on Windows or older Android. Half your recipients won't be able to preview a HEIC inline. JPG opens for everyone.
Editing in software older than 2018. Photoshop, Lightroom, and modern editors handle HEIC now, but legacy tools (Picasa, older Microsoft Paint) don't.
Embedding in a website or PDF.Most web servers and PDF generators expect JPG/PNG. HEIC in a web page won't render in older browsers.

When to Keep HEIC

iCloud Photo Library.Storage is literally half. Don't convert just for the sake of standardization.
Sharing between Apple devices. Mac, iPad, and iPhone all read HEIC natively — converting adds a step with no benefit.
Archiving for the future. HEIC quality and metadata round-trip without re-encoding loss; JPG decoding/re-encoding always degrades quality slightly.

How to Convert HEIC to JPG (Three Ways)

On Mac: drag the .heic into Preview, then File → Export → Format: JPEG. One file at a time unless you batch via Automator.
On iPhone before sharing: Settings → Camera → Formats → Most Compatible. iPhone now saves new photos as JPG. Or in Photos, select → Share → Save to Files → choose JPG export option.
In your browser: drop the file into PDFFlare's Convert Image tool, pick JPG as output. Works on every OS, no install, and the file never uploads.

Common Mistakes

Converting and then re-converting. Each round-trip loses quality. Convert once, keep the JPG.
Renaming .heic to .jpg.Just changing the extension doesn't actually convert the file — it's still HEIC bytes with a JPG label. Software that opens by inspection (every modern tool) will still treat it as HEIC.
Forgetting EXIF data. HEIC carries location and capture metadata. Most converters preserve EXIF, but a few strip it. Verify before archiving important photos.

Tips for Working With HEIC Files

A few practical patterns that save time:

Stop converting individual files. If you frequently send HEIC photos to non-Apple users, switch the iPhone to JPG capture by default (Settings → Camera → Formats → Most Compatible). New photos are JPG; existing iCloud HEICs stay HEIC.
Convert in batches when needed.Drop 10 HEICs into PDFFlare's Convert Image, pick JPG output, get 10 JPGs back. Faster than converting one at a time in Preview.
Preserve EXIF when archiving. Some converters strip GPS and capture metadata; PDFFlare preserves EXIF by default. Verify in your destination archive that location and timestamp made the trip.

Privacy: Convert Without Uploading

PDFFlare's Convert Image tool runs entirely in your browser via the File API and a WebAssembly HEIC decoder — your photos never leave your machine. Open DevTools → Network while converting and you'll see zero requests to PDFFlare. Important for personal photos that have GPS coordinates, recognizable faces, or sensitive context.

Related Tools

Convert Image — convert HEIC to JPG, PNG, or WebP. Browser-based, no upload.
Compress Image — after converting HEIC to JPG, file sizes can balloon. Compress for sharing.
Resize Image — iPhone photos are huge (12-48 MP). Resize before uploading to portals or social.
Photo to PDF — once converted to JPG, bundle multiple iPhone photos into a single PDF.

Wrapping Up

HEIC is a smart default for iPhone storage and AirDrop between Apple devices, but a hassle when you need universal compatibility. Convert to JPG only when you have to — uploading to a portal, sharing with Windows users, embedding in a webpage. PDFFlare's Convert Image tool handles the conversion in your browser without uploading the photo, which matters for photos with location data or recognizable faces.