Fix "File Not Supported" on ChatGPT

Convert HEIC photos to JPEG instantly — free, private, no upload to any server.

🔒 100% in-browser · Nothing leaves your device

Install Chrome Extension — Converts Automatically

Or use the tool above for one-off conversions.

Why ChatGPT Rejects Your iPhone Photos

iPhone shoots HEIC by default since iOS 11. ChatGPT only accepts JPEG and PNG — it has never supported HEIC.

What you see in ChatGPT:

"We weren't able to process the file. Please ensure the file type is supported."

HEIC (High Efficiency Image Container) gives Apple users smaller file sizes, but most web services — including ChatGPT — haven't added support. Converting to JPEG takes seconds and fixes the error instantly.

Two Ways to Fix It

One-off: Use the Converter Above

Drop your HEIC file into the tool at the top of this page. Download the JPEG. Upload to ChatGPT. Done.

Works on any browser, no install needed.

Automatic: Install the Extension

The AI File Fixer Chrome extension intercepts HEIC uploads automatically. You never see the error again — just upload as normal.

Install Free →

How It Works

1
Drop your HEIC file above
Drag and drop or click to browse. Works with any .heic or .heif file from your iPhone.
2
Instant in-browser conversion
We convert it to JPEG using WebAssembly — entirely in your browser. Nothing leaves your device.
3
Download and upload to ChatGPT
Click download, then upload the JPEG to ChatGPT normally. No more "file not supported" errors.

Frequently Asked Questions

HEIC (High Efficiency Image Container) is Apple's default photo format since iOS 11. It produces smaller files than JPEG while keeping quality high. ChatGPT only accepts JPEG and PNG — it has never added HEIC support, so every HEIC photo from an iPhone triggers the "file not supported" error.

No. Everything runs in your browser using WebAssembly. Your file never leaves your device. There is no server involved — the conversion happens entirely on your computer or phone.

Visually identical to the original. We convert at high quality (0.9/1.0 scale) with a 2048px maximum dimension — perfect for AI photo analysis, with no noticeable quality loss.

Under 1 second for most photos after the first one. The first conversion loads the WASM decoder (~4 seconds on a typical connection). Subsequent conversions are near-instant.

The web tool above works on any modern browser including Safari on iPhone. The Chrome extension requires Chrome on desktop.

Drop them all at once — the tool converts each one and gives you individual download links. The Chrome extension handles batches automatically.