HEIC to JXL
Convert HEIC to JXL right in your browser — nothing uploaded.
Drag & drop your HEIC files here, or click to choose. Everything runs in your browser — nothing is uploaded.
This free HEIC to JXL converter turns HEIC images into JPEG XL entirely inside your browser. Drop in as many files as you like; each is decoded and re-encoded on your own device, so nothing is uploaded, there is no queue and no size cap beyond your own memory. JXL is a next-generation format with excellent quality per byte.
Frequently Asked Questions
How do I convert HEIC to JXL?
Drop your HEIC files onto the box above, or click to pick them. Each one is decoded and re-encoded as JXL straight away and appears with its new size and a Download button. You can drop several at once — they are converted one after another without any upload wait.
Are my files uploaded to a server?
No. The file is decoded and re-encoded directly in your browser using JavaScript and WebAssembly, and never leaves your device. That is what makes it safe for private photos, client work and anything confidential, and it is why the tool keeps working with your network disconnected once the page has loaded.
Why choose JXL?
JXL is a next-generation format with excellent quality per byte. No browser can encode JPEG XL natively, so this tool carries a WebAssembly encoder and does the work on your device.
Do I need to install anything to make JXL files?
No. No browser can create JPEG XL on its own, so this page loads a small WebAssembly encoder the moment you press Convert — nothing is installed and nothing is uploaded. It only downloads when you actually convert something, so the page itself stays fast.
Why is there no preview of the JXL result?
Browsers cannot display JXL images, so showing a preview would mean showing a broken-image icon. The file is still correct — download it and open it in an image editor, or convert it to PNG if you need to view it on the web.
Why can I not open HEIC files on Windows?
Windows needs a paid codec from the Microsoft Store to open HEIC, which is why iPhone photos so often refuse to open on a PC. Converting them here sidesteps that entirely — the decoding happens in your browser, and you get a file every program already understands.
Is there a limit or a watermark?
No limits, no watermark, no signup and no cost. Because the work happens on your own device there is no server bill to cover, so there is nothing to meter — the only real constraint is your device’s memory on very large files.
Does this work on Windows, Mac, iPhone and Android?
Yes. It runs in any modern browser on Windows, Mac, Linux, iPhone and Android with nothing to install and no account needed. Chrome, Edge, Firefox and Safari are all supported.