JPG to HEIC Converter

Convert JPG to HEIC online for free. Fast, private, no signup, no watermark — high-quality JPG-to-HEIC conversion.

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JPG to HEIC: legacy compression to modern codec

HEIC's HEVC codec achieves 40-50% better compression than JPG's DCT algorithm at equivalent perceptual quality. The conversion decodes JPG's DCT-compressed data to raw pixels and re-encodes with HEVC's block-based prediction and transform coding. Since the source is already lossy, the HEIC output preserves the JPG's quality ceiling while potentially achieving smaller file size. HEIC also supports 10-bit color depth, though this provides no benefit when the source is 8-bit JPG.

Convert JPG to HEIC for integration into Apple photo libraries or when consolidating a mixed photo collection into HEIC format for iOS/macOS storage efficiency. The conversion saves space but limits compatibility with non-Apple platforms.

JPG vs HEIC: Side-by-side

Technical comparison of the two formats — useful for deciding which to use, or for confirming what changes during conversion.

Property	JPG	HEIC
Full name	JPEG (Joint Photographic Experts Group)	High Efficiency Image Container
Year introduced	1992	2017
Developer / standard body	JPEG Committee	MPEG / Apple
MIME type	image/jpeg	image/heic
File extension	.jpg / .jpeg	.heic / .heif
Compression	Lossy (DCT-based)	Lossy (HEVC)
Color / data depth	24-bit truecolor	8/10-bit
Max dimensions / size	65,535 × 65,535 px	8,192 × 4,320 px
Transparency	No	Yes
Animation	No	Yes
Standard / specification	ISO/IEC 10918	ISO/IEC 23008-12
Best for	Photos, web images, email attachments	iPhone photo storage (50% smaller than JPG at equivalent quality)

Read the full JPG vs HEIC comparison

JPG to HEIC FAQ

Quick answers about compatibility, quality, metadata handling, and the most common reasons to convert JPG files to HEIC.

How do I convert JPG to HEIC?

Upload your JPG image to iFormat and click Convert — it's decoded and re-encoded to HEIC in seconds. It's free, adds no watermark, and needs no account. Batch upload is supported, and results download individually or as a ZIP.

Can I convert JPG to HEIC without losing quality?

HEIC is Apple's efficient HEIF format. Converting to a lossless target such as PNG, TIFF or BMP preserves every pixel exactly. Converting to a lossy one such as JPG or WebP re-encodes the image, and iFormat uses a high default quality so the difference is invisible at normal viewing size. For the sharpest result, always convert from the highest-quality source you have.

What is JPG?

JPG is a lossy raster format, typically used for photos and web images where small size matters. Converting it to HEIC makes the file easier to open, share, or upload where JPG is not supported.

JPG vs HEIC — which format should I use?

JPG is a lossy raster format best for photos and web images where small size matters. HEIC is Apple's efficient HEIF format best for iPhone photos at small file sizes. Use HEIC when a website, form, or app requires it, or when you need HEIC's specific strengths like smaller file size, wider compatibility, or transparency support.

How do I open JPG files?

On Windows: Photos, or any browser. On a Mac: Preview, or any browser. Universally supported — if a JPG will not open, the file is probably corrupt or misnamed.

Should I convert my JPG photos to HEIC for iPhone storage?

It won't save meaningful space. HEIC is efficient when the camera captures directly in HEIC, but converting an already-compressed JPG to HEIC just re-encodes lossy data — the file may get slightly smaller but quality degrades further. For storage savings, convert future photos to HEIC at capture time.

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