HEIC to PNG Converter — Free Online
Convert HEIC to PNG online for free. No signup required. Client-side — your files never leave your device.
About HEIC to PNG Conversion
Converting HEIC to PNG sits at the intersection of two of the most-searched questions in image workflows: file compatibility and file size. HEIC files behave well in their native environment but cause friction when you need to share, edit, or publish them somewhere that expects PNG. The most common triggers for this conversion are uploading to a platform that rejects HEIC, opening the file in software that does not recognize it, attaching the image to a document workflow, and reducing the file size for faster web delivery. None of those problems require a server upload — the file format is fully described, the math is well-known, and a modern browser has every API needed to do the conversion locally. This decodes Apple's HEVC-compressed HEIC photo and re-encodes the pixels into PNG's lossless format, so after the initial decode no further compression damage is introduced. PNG also adds an alpha channel and pixel-exact storage, which is why this route suits images you intend to edit or composite rather than just share.
Why People Convert HEIC to PNG
There is no single reason to convert HEIC to PNG; there are four overlapping ones. Compatibility is the most common: the destination application, website, or printer simply does not accept HEIC. File size is the second: PNG either compresses better (saving bandwidth) or worse (preserving fidelity) than HEIC, and the right choice depends on what you do next with the image. Editing is the third: some editors strip metadata or refuse to open certain HEIC variants, while PNG loads cleanly. And finally there is preservation — converting between lossless formats avoids generation loss when you plan to keep editing the file. FileChange handles all four motivations in the same one-click flow. You choose PNG over JPG when you need an edit-safe, lossless copy — say a HEIC screenshot or a graphic-heavy shot that will be marked up, cropped repeatedly, or layered into a design without accumulating JPEG artifacts. It's the format to pick when fidelity and clean edges matter more than file size.
How to Convert HEIC to PNG Online
- Open FileChange. Open this HEIC to PNG converter in any modern browser — Chrome, Firefox, Safari, or Edge all work. No installation, no plugin, no account.
- Drop your HEIC file. Drag your HEIC file into the upload area, or click to browse your device. You can also drop multiple files at once for batch conversion.
- Confirm PNG as the target. PNG is pre-selected. Optionally open "Advanced settings" to tune quality, resolution, or other format-specific options.
- Click Convert. Your file is processed locally in your browser. The first run loads the conversion engine; subsequent files convert almost instantly.
- Download your PNG. When the conversion finishes, the PNG file downloads automatically. Nothing was uploaded, nothing is stored, nothing leaves your machine.
How the HEIC → PNG Conversion Works
FileChange converts HEIC to PNG using the heic2any library, which decodes HEVC using a WebAssembly port of libheif. The flow is straightforward: your HEIC file is read from disk via the File API, decoded into an intermediate representation, transformed into the PNG target, and offered back as a download. Every step runs on your own device — there is no server in the loop, no queue, and no third-party storage. The same approach is used by professional desktop converters; running it in the browser just removes the install step.
Top Use Cases for HEIC to PNG
- Turning an iPhone screenshot saved as HEIC into a PNG for annotation in a tool like Figma or a Windows image editor, where lossless edges keep text crisp.
- Producing a lossless master of an iPhone graphic to drop into a design layout, so repeated resaves don't introduce the JPEG artifacts you'd get otherwise.
- Open HEIC files in apps and platforms that only accept PNG
- Reduce file size for email, messaging, and web delivery by switching from Apple's high-efficiency iPhone photo format to lossless image format with transparency
- Batch convert many HEIC files at once without uploading them anywhere
- Keep sensitive HEIC content private — the conversion happens entirely on your device
- Avoid signup walls, watermarks, and trial limits on competing online converters
- Prepare HEIC images for PNG-only platforms (some CMSs, email clients, design tools)
About the HEIC Format
HEIC (High Efficiency Image Container) is the default photo format on Apple devices since iOS 11, based on the HEVC (H.265) video codec. HEIC achieves approximately 50% smaller file sizes than JPG at the same visual quality, which is significant for smartphone storage. The format supports 16-bit color depth, transparency, multiple images in a single file (burst shots, Live Photos), and non-destructive editing metadata. HEIC is the efficient but poorly-supported iPhone format whose decoded pixels you want to preserve exactly rather than recompress.
HEIC was introduced by Apple with iOS 11 in 2017 as the default iPhone photo format.
About the PNG Format
PNG is a lossless raster image format created in 1996 as a patent-free replacement for GIF. Every pixel in a PNG file is stored exactly as saved, with no compression artifacts or quality degradation. PNG supports full alpha channel transparency, making it the standard format for logos, icons, screenshots, UI elements, and any image that requires crisp edges or transparent backgrounds. PNG is the lossless, alpha-capable raster format that locks the decoded image in place, ideal for screenshots, graphics, and anything destined for editing.
PNG was created in 1996 as a patent-free replacement for GIF, then quickly adopted as the web standard for graphics and screenshots.
HEIC vs PNG — Side-by-Side
| HEIC | PNG |
|---|
| Compression | Lossy (HEVC-based) | Lossless (DEFLATE) |
|---|
| Transparency | Yes | Yes |
|---|
| Animation | Yes | No |
|---|
| Max Colors | 281 trillion (16-bit) | 16.7 million (24-bit) or 281 trillion (48-bit) |
|---|
| Color Space | RGB, Wide Gamut (Display P3) | RGB, RGBA, Grayscale, Indexed |
|---|
| Bit Depth | Up to 16-bit per channel | 1, 2, 4, 8, or 16-bit per channel |
|---|
| Metadata | EXIF, XMP, depth maps | tEXt, iTXt, zTXt chunks |
|---|
Quality tips for HEIC → PNG
When converting HEIC to PNG, the single most impactful setting is the output quality slider. Above 85% you cannot perceive any compression artifacts in normal viewing; below 60% the image starts to feel visibly degraded. FileChange defaults to 92% quality, which is visually lossless for nearly all photographs and screenshots. If PNG is a lossless format (PNG, BMP, TIFF), the quality slider is irrelevant — every pixel is preserved exactly. For HEIC to PNG conversions involving a lossy target, you can also resize down to the actual display size to drop file size further without any visible loss. FileChange exposes both controls under "Advanced settings" before you hit Convert. Because PNG is lossless, the converted file is typically much larger than the compact HEIC source, especially for detailed photographs that don't compress well without loss. That size is the cost of having pixels you can re-edit and resave indefinitely with zero further degradation.
Troubleshooting
Converting a full-resolution iPhone photo to PNG can produce a surprisingly heavy file, since photographic detail doesn't shrink well under PNG's lossless compression.
Use PNG when you genuinely need losslessness or transparency; for ordinary photo sharing where size matters, convert the HEIC to JPG instead and save the bulk.
The conversion is slower than expected
Heavy formats (video, large PDFs, big audio files) run entirely on your CPU. The first conversion in a session loads the WASM engine (about 30 MB for FFmpeg, 2 MB for PDF.js) — subsequent conversions reuse the loaded engine and run much faster. Close other heavy tabs to free memory.
The output PNG looks different from my HEIC
Format conversions are not always pixel-identical. Color spaces, font substitutions, and metadata can shift. For best fidelity, use the highest-quality original you have, and pick lossless target formats (PNG, FLAC, WAV) when fidelity matters more than file size.
The browser ran out of memory
Very large files (multi-GB videos, 1000-page PDFs) can exhaust a browser's memory. Split the file into smaller chunks, close other tabs, or use a desktop converter for files over 2 GB.
The colors look washed out or off
Color profile data sometimes does not survive a conversion. Most browsers assume sRGB; if your source has a wide gamut profile (Display P3, Adobe RGB), the output may render flatter. Open the converted file in software that respects embedded color profiles for accurate color.
Frequently Asked Questions about HEIC to PNG
Why is my PNG so much bigger than the original HEIC?
HEIC uses efficient lossy HEVC compression, while PNG is lossless and stores photographic detail without discarding any. The larger size is the trade-off for an edit-safe, pixel-exact image.
Should I use PNG or JPG for my iPhone photos?
Use PNG when you'll edit the image, need transparency, or want a lossless master. Use JPG for everyday sharing where a smaller, universally-compatible file is the priority.
Does HEIC-to-PNG improve the photo's quality?
No. Lossless PNG preserves the decoded pixels exactly but can't restore detail that HEIC's lossy compression already discarded. It prevents further loss going forward, but doesn't add detail back.
Is FileChange's HEIC to PNG converter really free?
Yes, completely free. There is no signup, no free trial that runs out, no credit card, and no watermark on the output. Convert as many HEIC files to PNG as you need, as often as you want.
Is my HEIC file uploaded to a server when I convert to PNG?
No. The conversion runs entirely inside your browser using the heic2any library, which decodes HEVC using a WebAssembly port of libheif. Your file is read locally, processed on your CPU, and the resulting PNG is generated on your device. Nothing is transmitted, stored, or logged anywhere.
How long does HEIC to PNG conversion take?
Image conversion is nearly instant — typically under a second. Very large images (50+ megapixels) take a few seconds longer because of the canvas redraw.
Is there a file size limit when converting HEIC to PNG?
There is no hard cap — your device's available memory is the real ceiling. In practice, most HEIC files up to a few hundred megabytes convert without issues. Very large files (multi-GB videos, thousand-page PDFs) may slow down or fail on low-memory devices.
Can I batch-convert multiple HEIC files to PNG at once?
Yes. Drop as many HEIC files as you like in a single batch and FileChange converts them all in one click. Each file is processed independently and then offered as a download.
Related HEIC and PNG conversions
Learn more about HEIC and PNG