Convert HEIC to PNG Online
Last reviewed: April 2026
When JPG isn't good enough — for screenshots, design assets, archival copies, or anything where you can't afford lossy compression — convert iPhone HEIC photos to PNG instead. Sukat does it in your browser: no upload, no signup, no quality loss. PNG is universally supported, lossless, and preserves transparency where the source has it. Drop your HEIC files in, pick PNG, download. Files end up bigger than JPG (PNG is uncompressed), but every pixel of the original is preserved.
How to convert HEIC to PNG
- Drop your HEIC files onto Sukat's drop zone, click to browse, or paste from your clipboard. Multi-file is supported.
- Pick PNG as the output format. PNG has no quality slider — every pixel is preserved exactly. Optionally set a target width if you want to resize at the same time.
- Click "Convert & Download All." For batches, leave the ZIP option checked to receive a single download with all the converted files.
When do you need HEIC to PNG?
PNG is the right output when JPG's lossy compression would damage the result. Common scenarios:
- iPhone screenshots saved as HEIC — text, UI elements, and crisp edges suffer noticeably under JPG compression. PNG keeps text razor-sharp.
- Photos with transparency. iPhone HEIC files saved through Photos editing or third-party apps can contain alpha channels. Converting to JPG flattens transparency to white; PNG preserves it.
- Design and editing pipelines that prefer or require PNG — Figma imports, Photoshop intermediates, slide decks, app store assets, marketing graphics.
- Documentation and tutorials where you need pixel-perfect screenshots from an iPhone for a Notion doc, GitHub README, or knowledge-base article.
- Archival copies of important photos where you want a single lossless conversion rather than progressive JPG quality decay.
- Photos with text overlay — receipts, whiteboard captures, signs, documents — where JPG's chroma subsampling smears text against backgrounds.
- Outputs going to print when the print service accepts PNG and you want maximum fidelity.
If your goal is just to share the photo with someone on Windows or Android and quality isn't critical, Convert HEIC to JPG produces much smaller files for the same visible quality. Use PNG when JPG's quality cost is unacceptable.
Why Sukat
True lossless conversion. Sukat's PNG output preserves every pixel of the decoded HEIC source. No chroma subsampling, no quality slider, no surprises. The same input always produces the same output.
Privacy by default. The whole conversion runs in your browser using the Canvas API and a client-side HEIC decoder. Your photo never reaches a server. No account, no email, no upload. You can verify by going offline before clicking Convert — it still works.
Batch with no cap. Drop 50 HEIC photos, get back 50 PNGs as a single ZIP. Most free HEIC-to-PNG tools cap free use at 5–10 files and add watermarks above that. Sukat doesn't.
Resize at conversion. Set Target Width and Sukat resamples during conversion — useful when the iPhone original is 4032 × 3024 and you only need a 1024 × 768 web screenshot. Saves having to convert and then resize separately.
FAQ
Why is the PNG larger than the original HEIC?
PNG uses lossless compression while HEIC is heavily lossy at the source. A 2 MB HEIC photo typically becomes a 6–12 MB PNG — that's the price of preserving every pixel. If file size matters more than pixel-perfect fidelity, use Convert HEIC to JPG instead.
Will Sukat preserve transparency from my HEIC?
Yes. When the HEIC source has an alpha channel (typical for iPhone-edited photos with cut-out subjects, or images saved through certain apps), Sukat keeps it in the PNG output. JPG conversion would flatten transparency to white.
Does Sukat work on iPhone Safari?
Yes. You can drop a HEIC straight from the camera roll, pick PNG, and download. The PNG goes to your Files app or Downloads, ready for sharing.
Will the PNG conversion affect colour accuracy?
The HEIC source is decoded into the browser's standard sRGB colour space and re-encoded losslessly to PNG. For most photos that's fine. Wide-gamut Display P3 source colours (newer iPhone shots in Pro/ProRAW) get clipped to sRGB during decode — same as you'd see in any non-Apple PNG viewer. For colour-critical work, keep the HEIC.
Can I batch-convert HEIC to PNG?
Yes. Drop multiple files, pick PNG, click Convert. Each file is processed independently. With more than one file, Sukat offers a ZIP download by default so you don't have to approve a download per file.
Why is my PNG conversion slow?
Two factors: HEIC decoding takes effort (the heic2any library handles this), and PNG encoding is much slower than JPG. A 50-photo batch on a modern laptop typically takes 30–60 seconds. On older phones or low-end laptops, expect longer. Native apps will be faster, but they require uploads or installs.
Related tools
- Convert HEIC to JPG — when smaller file size matters more than lossless quality
- Compress HEIC — reduce HEIC file size with a target ceiling
- Image Size Guide — file-size and dimension reference for every platform
- How It Works — the full mechanics of Sukat's compression pipeline