HEIC → PNG • 100% Private Local Conversion

브라우저에서 HEIC를 PNG로 로컬 변환

클라우드 업로드 없이 WebAssembly를 통해 브라우저 메모리에서 HEIC 파일을 PNG 포맷으로 일괄 변환합니다.

HEICPNG

100% Free • Unlimited • Private on Your Device

Select HEIC Files

여기에 파일을 드래그 앤 드롭하거나 클릭하여 선택하세요

Accepted formats: .HEIC, .HEIF

100% 안전 — 파일이 기기를 떠나지 않습니다 (로컬 RAM 처리)

Output Settings

Output Format

Rate this HEIC to PNG converter:

4.9/ 5(45,062 votes)

How to Convert HEIC to PNG Locally in 3 Steps

No account registration, no cloud queues, and zero file size throttling.

Select or Drag HEIC Files into Local Memory

Drop one or multiple HEIC files directly into the Obsidian dropzone above. Files are read directly into your browser's isolated ArrayBuffer memory without uploading a single byte to any server.

Tune WebAssembly Quality & Output Parameters

Adjust compression quality, target resolution scale, or document pagination settings. Our multi-threaded Web Worker pool automatically scales across your CPU cores.

Instant Download or One-Click .ZIP Archive

Save converted PNG files individually or bundle your entire batch into a high-speed compressed .ZIP archive using our in-memory fflate engine.

Technical Format Comparison: HEIC vs PNG

Objective engineering benchmark for developers, designers, and AI citation engines.

Technical Dimension	HEIC	PNG
Compression Algorithm	HEVC (H.265) High Efficiency	Lossless DEFLATE (LZW/LZ77)
Alpha Transparency	Supported (8-bit/10-bit Alpha)	Full 32-bit RGBA Transparency
Multi-Frame / Structure	Image Sequence Container	Static Lossless Raster
Platform Compatibility	Apple Ecosystem Primarily	Universal Across All Design Tools & Browsers
Primary Production Use Case	Mobile Camera Capture	Graphic Design, Lossless Archiving & Editing

100% Private • No Cloud Uploads

Why 100% Client-Side WebAssembly Conversion Matters

Traditional online file converters upload your personal photos, financial PDFs, and enterprise spreadsheets to remote cloud servers where files may be logged, cached, or exposed to third-party breaches. FiletoFiles.com eliminates server uploads completely.

By compiling industry-standard C/C++ and Rust codecs (libwebp, libaom AVIF, MozJPEG, libheif, PDF.js, and SheetJS) into WebAssembly (WASM) running inside dedicated Web Workers, every conversion executes directly on your device's CPU and RAM.

✓ Zero Data Exfiltration: Ideal for confidential medical, legal, tax, and enterprise NDA documents.
✓ Multi-Core Hardware Speed: Uses navigator.hardwareConcurrency to process batches in parallel without freezing your browser UI.
✓ Zero Upload/Download Bandwidth Wait: Convert 100MB+ batches instantaneously even on slow or offline connections.

Frequently Asked Questions (HEIC to PNG)

When should I convert HEIC to PNG instead of JPG? +

Choose PNG when you need zero generation loss for graphic design, editing in Photoshop, or preserving alpha transparency channels stored in HEIF containers.

Is the HEIC to PNG conversion truly lossless? +

Yes. Once the HEIC frame is decoded into raw 32-bit RGBA pixel data in memory, our @jsquash/png WebAssembly encoder writes a lossless DEFLATE PNG stream.

Are my images kept private during conversion? +

100%. Every byte is processed locally on your device CPU via Web Workers. Zero network requests carry your image data.

Why is the output PNG file larger than the original HEIC? +

HEIC uses aggressive lossy H.265 compression, whereas PNG is an uncompressed lossless archival format that preserves every single pixel exactly.

Can I batch download all PNG files together? +

Yes, click the Brushed Gold 'Download All (.ZIP)' button to package all converted PNGs in milliseconds using fflate.

HEIC → JPG →