liminfoHEIC Convert
Free web tool: HEIC Convert
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Choose fileHEIC/HEIF 파일, 최대 50MB
About HEIC Convert
The HEIC to JPG/PNG Converter is a free, browser-based tool that converts Apple's HEIC (High Efficiency Image Container) and HEIF (High Efficiency Image Format) photos into universally compatible JPG or PNG images. It uses the heic2any JavaScript library to decode HEIC files entirely within your browser, with no server upload required. You can choose between JPEG and PNG output, and for JPEG you can control the compression quality from 10% to 100% using a slider.
HEIC is the default photo format used by iPhones and iPads (iOS 11 and later) and by macOS. While it produces smaller file sizes than JPEG at equivalent quality, HEIC is not natively supported by many Windows applications, websites, or older software. This tool is commonly used by iPhone users who need to share photos with Windows users, upload images to websites that do not accept HEIC, or use photos in applications that only support JPEG or PNG.
The conversion is entirely client-side — your photo is never sent to any server. After conversion, the output image is previewed directly in the browser, and you can download it with the original filename (with the extension changed to .jpg or .png). The tool supports both .heic and .heif file extensions and handles files up to 50 MB.
Key Features
- Converts HEIC and HEIF files (the default iPhone/iPad photo format) to JPG or PNG
- Adjustable JPEG compression quality slider from 10% to 100% for size vs. quality control
- In-browser preview of the converted image before downloading
- Output filename automatically derived from the original HEIC filename
- Uses the heic2any library for accurate HEIC/HEIF decoding in the browser
- Supports both .heic and .heif file extensions
- Handles files up to 50 MB — no server upload, processing is 100% local
- Dark mode support and responsive layout for use on any device
Frequently Asked Questions
What is a HEIC file?
HEIC (High Efficiency Image Container) is Apple's image format, based on the HEIF (High Efficiency Image Format) standard developed by the MPEG group. Apple introduced it as the default camera format in iOS 11 (iPhone 7 and later). HEIC files are typically about half the size of equivalent JPEG files while preserving the same visual quality.
Why can't I open HEIC files on Windows?
Windows does not natively support HEIC without the HEVC Video Extensions codec installed from the Microsoft Store. Many web services, image editors, and older Windows applications cannot open HEIC files. Converting to JPEG or PNG ensures your photos work in any application or browser.
What is the difference between JPG and PNG output?
JPG (JPEG) uses lossy compression, producing smaller file sizes suitable for photos where minor quality loss is acceptable. The quality slider lets you control the trade-off. PNG uses lossless compression, preserving all image data but producing larger files. For photos, JPG is usually preferred; for images with transparency or sharp edges, PNG may be better.
How does the quality slider work for JPEG output?
The quality slider sets the JPEG compression level from 0.1 (10%) to 1.0 (100%). At 90% (the default), the output is visually indistinguishable from the original for most photos. Lower quality values reduce the file size further but introduce visible compression artifacts. PNG output does not have a quality setting as it uses lossless compression.
Can I convert multiple HEIC files at once?
The current version of the tool converts one file at a time. To convert multiple HEIC files, you can repeat the process by clicking "Convert New File" after each conversion. Batch conversion support may be added in future versions.
Does the HEIC conversion preserve metadata like GPS location?
The heic2any library decodes the image pixel data and converts it to the target format. EXIF metadata (including GPS location, camera settings, and timestamps) may not be preserved in the converted output, depending on the heic2any version. If preserving metadata is critical, a desktop application like Lightroom or Shotwell is recommended.
Why does HEIC conversion take longer than other image conversions?
HEIC files use the HEVC (H.265) video codec for compression, which requires significantly more computation to decode than JPEG or PNG. The heic2any library performs this decoding in JavaScript in your browser, which is slower than native C/C++ implementations. Larger or higher-resolution HEIC files will take longer to process.
Is my photo uploaded to any server during conversion?
No. Your HEIC file is converted entirely within your browser using the heic2any JavaScript library. The photo data never leaves your device. This makes the tool suitable for private photos including medical images, personal photos, and sensitive business images.