Developer & Digital Tools Β· π Global
HEIC Batch Converter
Convert iPhone HEIC to JPG/PNG/WebP fully in-browser. Naver/Tistory/KakaoTalk presets for Korean platforms.
About this tool
HEIC Batch Converter (heic) turns iPhone / iPad HEIC photos into JPG / PNG / WebP entirely inside the browser. The page loads the libheif WebAssembly build and decodes / re-encodes locally β not a single byte is uploaded (verifiable via DevTools Network). Korean-platform presets are built in: Naver blog (2000px JPG q85), Tistory (1600px JPG q85), KakaoTalk (1200px JPG q80). It processes hundreds of files in 50-file batches to keep memory bounded and bundles results via JSZip into one ZIP. Stats show before/after file size and savings.
Use cases
Scenario 1
Naver blog photo prep
A blogger with 200 HEIC photos from a trip uses the Naver preset (2000px JPG q85) to batch-convert and upload the whole post in one go.
Scenario 2
KakaoTalk-friendly compression
When KakaoTalk rejects HEIC for Android friends, the KakaoTalk preset (1200px JPG q80) squeezes images under the 5 MB attachment cap.
Scenario 3
Legacy Windows / Photoshop
Batch-convert to PNG so legacy office PCs (no HEIC codec) or older Photoshop can open the files, with metadata (timestamp / GPS) preserved.
Scenario 4
Web forum upload rejection
Korean real-estate / second-hand forums reject HEIC. Convert to JPG and resize to 1600px in one step for faster uploads.
Features
- libheif WebAssembly decoding β zero bytes uploaded
- Naver blog / Tistory / KakaoTalk / custom presets
- Drag-and-drop, folder upload, 50-file batches
- JSZip-based batch ZIP download
- Quality slider (1β100) + max-resolution resize
- Before / after file-size and savings stats
- KR / EN UI (`/en` path), mobile-friendly
Frequently asked
- Q. Why convert HEIC to JPG at all?
- A. iOS 11+ stores HEIC by default β about half the size of JPG at equivalent quality. But Naver blog, KakaoTalk for Android, and some legacy Windows apps canβt open HEIC. Convert to JPG or WebP when you need broad compatibility.
- Q. Are photos really not uploaded?
- A. Correct. Conversion runs entirely in the libheif WASM module loaded once. Open the DevTools Network tab and run a conversion β no upload requests appear. The tool also works fully offline after the first load.
- Q. How many photos can I convert at once?
- A. Around 200β500 photos at a time work reliably on a typical 16 GB RAM PC. The 50-file batch loop bounds memory use, so dragging a whole folder doesnβt freeze the browser.
- Q. Is EXIF (timestamp / GPS) preserved?
- A. EXIF is preserved by default. If youβre uploading to SNS / blogs and want to strip location data, toggle "Remove EXIF" before converting.
Sources / references
Related guides / blog posts
Related tools
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How we run it / disclaimer
This tool is advisory and does not constitute legal, tax, medical, or financial advice. All calculations and document generation run in your browser; inputs are never sent to a server. Ads follow Google AdSense policy and are kept separate from tool accuracy.