HEIC to XPM Converter
Processing entirely on your device — large files may take a moment.
HEIC/HEIF Image and X11 Pixmap exist for different jobs: HEIC (High Efficiency Image Container) is the default photo format of iPhones. It stores photos in roughly half the space of JPG, but many programs and older systems still cannot open it directly. Convert PNG or SVG output to XPM to feed icon themes and legacy toolkits.
This converter runs entirely in your browser using WebAssembly — your files never leave your device, nothing is uploaded, and there are no watermarks, sign-ups or queues. Drop in several files at once to convert them as a batch.
How HEIC compares to XPM
| HEIC | XPM | |
|---|---|---|
| Compression | Lossy HEVC (lossless variant exists) | None (ASCII text) |
| Transparency | Supported | Single transparent color |
| Animation | Supported (bursts/sequences) | Not supported |
| Metadata | EXIF, depth maps, HDR gain maps | Not supported |
| Best for | iPhone photo storage | Linux icons, X11 themes |
How to convert HEIC to XPM
- 1
Select your files
Drag & drop your HEIC files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to XPM". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted XPM file individually, or grab everything at once as a ZIP archive.
About the HEIC format
HEIC (High Efficiency Image Container) is the HEIF container carrying HEVC-compressed image data, and it has been the default photo format on iPhones since iOS 11. At equivalent quality it stores photos in roughly half the space of JPG, keeps 10-bit color and HDR information intact, and can hold multiple images — bursts,Live Photos pairs, even depth maps — in one file.
Its weakness is everything outside Apple's ecosystem. Windows needs an extension from the Store to preview it natively, many web services still reject the upload, and HEVC's patent licensing slowed hardware adoption on non-Apple devices. Android 9+ phones generally handle it, but the desktop web remained JPG territory for years.
+Strengths
- ✓About half the size of JPG at the same quality
- ✓10-bit color and HDR survive the pipeline
- ✓One file can hold bursts, sequences and depth data
!Limitations
- −Windows and many web services need extras to open it
- −HEVC patent licensing complicated adoption outside Apple
- −Thumbnail and preview performance on old hardware is poor
About the XPM format
XPM (X11 Pixmap) is an image format that is literally C source code: pixels are listed as character-to-color mappings inside an ASCII array. Compilers, text editors and version control all treat it as plain text, which is why Linux desktop icons and legacy X11 application assets have used it for decades.
XPM is limited to 256 colors per image and stores no alpha beyond a designated transparent character, so it is a niche target: mainly icon themes, window-manager decorations and retro programming projects.
+Strengths
- ✓Plain text — diffs and greps
- ✓Compiles straight into C programs
- ✓Tiny for small flat icons
!Limitations
- −256 colors maximum
- −Poor alpha (one transparent color)
Why convert HEIC to XPM?
There is a concrete reason this conversion exists: Windows and many web services need extras to open it XPM sidesteps that — Plain text — diffs and greps If that is your situation, the tool above settles it in seconds, entirely on your device.
Frequently asked questions
Is this HEIC to XPM converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.
Will I lose quality converting HEIC to XPM?
No — XPM is a lossless format, so every pixel of the converted image matches your original HEIC file. You can also adjust the quality/size balance before converting when the target format supports compression.
Can I convert several HEIC files at once?
Yes — drop as many files as you like into the tool and they are converted in one batch. When more than one file comes out, everything is bundled into a ZIP for a single download.
Will transparent areas survive the conversion to XPM?
Transparency is kept whenever XPM actually supports an alpha channel. If the target format has none (like JPG), transparent areas are flattened onto a white background — that is a property of the format, not of this tool.