Convert PNG to HEIC
Drop one or many PNG files and download HEIC copies that take up far less space without an obvious quality loss. The encode runs in your browser through the open-source libheif WebAssembly build.
How to convert PNG to HEIC
- Drop your PNG files into the box.
- Each image is decoded by the browser, then re-encoded as HEIC by libheif.
- Download the HEIC copies.
Why convert PNG to HEIC?
PNG is lossless, which is exactly what you want during editing but a poor choice for long-term photo storage. A 12 MP photo saved as PNG takes 8–12 MB; the same picture as HEIC takes about 1.5 MB. If your goal is to free up disk space on a Mac, iPhone or iPad while keeping the visual quality of your library indistinguishable, PNG to HEIC conversion delivers the largest single saving you can make without touching the resolution. Keep in mind HEIC is lossy: do not convert PNG screenshots that contain text, line art, charts, or anything you intend to keep editing. For those, stick with PNG. Photographs and image-heavy content compress beautifully.
How we compare
The closest peer to this tool is Google's Squoosh, which also runs fully in your browser. Squoosh focuses on compression for the modern web and does not handle HEIC or batch conversion. Cloudconvert and Convertio cover more formats but upload your files to their servers and meter usage.
| This site | Squoosh | Cloudconvert | Convertio | |
|---|---|---|---|---|
| Files stay on your device | ||||
| No signup | Limited | Limited | ||
| No ads | ||||
| Batch conversion | ||||
| Supports HEIC | ||||
| Open source | AGPL-3.0 | Apache-2.0 |
Frequently asked questions
Are my PNGs uploaded?+
No. The encoder is WebAssembly running in the same tab as this page; nothing leaves your machine.
Will text or line art look bad after conversion?+
Possibly. HEIC is optimised for photographs. For screenshots with text, charts or sharp edges, leave the PNG as is.
How much space will I save?+
On photographic content, 80–90% smaller files at the default quality. Less savings on simple graphics.
Does the HEIC keep the alpha channel?+
Modern HEIC supports transparency, but compatibility varies. If alpha is critical, prefer PNG.
Can I encode in lossless HEIC mode?+
Not in this tool. Lossless HEIC defeats the size advantage; for lossless storage stay on PNG.
Which browsers work?+
Any modern browser: Chrome, Edge, Safari 17+, Firefox, Brave, Opera. WebAssembly is required.
Related converters
Files processed in your browser. We never see them.