HEIC Image Converter – Convert HEIC to JPG, PNG & WebP
About the HEIC Image Converter
The HEIC Image Converter takes the HEIC and HEIF photos your iPhone or iPad saves by default and turns them into formats that every browser, CMS, and design app can open: JPG, PNG, WebP, AVIF, TIFF, BMP, GIF, or ICO. HEIC gives Apple devices roughly half the file size of JPEG at similar quality, but that efficiency comes with a compatibility cost. Windows needs a paid codec extension, most photo uploaders reject the extension outright, and WordPress will not generate thumbnails from it. Converting to JPG or WebP is usually the shortest path from an iPhone camera roll to a published page.
Decoding runs in your browser using the heic2any library, and every conversion after that goes through the Canvas API. Your photo is never uploaded, which matters more here than with most formats, since HEIC files straight off a phone often carry personal images and location metadata. The tool also accepts ordinary JPG, PNG, WebP, TIFF, AVIF, BMP, and GIF files up to 10MB, so it doubles as a general converter when you are batching mixed sources from a shared album.
One honest limitation: HEIC encoding is listed as an output option, but almost no browser can actually write HEIC. The tool tests this on load, disables the button, and shows a notice rather than letting you start a conversion that would fail halfway through. Converting into HEIC is generally something you do on an Apple device, not on the web.
Most people land here because a client or colleague sent iPhone photos that will not open on Windows. If you need the reverse trip and already have an icon file to unpack, the ICO Image Converter reads multi-size icon containers and extracts any embedded image.
The team behind BigToolSite tested this converter with iPhone Live Photo stills, portrait-mode HEICs, 48-megapixel ProRAW exports, HEIF files from Android devices, and standard JPG and PNG inputs, confirming that oversized files are rejected cleanly at the 10MB limit and that unsupported output formats are disabled before conversion rather than after.
For photographers already working in JPG who simply need a smaller or more modern file, the JPEG Image Converter handles that path without the HEIC decoding step.
Site owners chasing Core Web Vitals usually finish by compressing to a next-generation format, and the AVIF Image Converter covers that side of the workflow once the photo is out of HEIC.
How to Use the HEIC Image Converter
- Drag a HEIC or HEIF file onto the upload area, or click to browse. JPG, PNG, WebP, TIFF, AVIF, BMP, and GIF are accepted too, up to 10MB.
- Wait for the decode step. HEIC files show a “Decoding HEIC” progress bar; other formats load instantly. The file card then shows the filename, file size, pixel dimensions, and detected type.
- Pick an Output Format from the nine buttons: JPG, PNG, WebP, TIFF, AVIF, ICO, BMP, GIF, or HEIC. Formats your browser cannot encode appear greyed out.
- For JPG, WebP, and AVIF, adjust the Quality slider from 1% to 100%. The default of 85% is a good balance for photos.
- Set Resize to Original Size, 25%, 50%, 200%, or Custom Size. Custom mode gives you width and height inputs with a Maintain aspect ratio checkbox that keeps both fields in sync.
- If you choose ICO, an ICO Size dropdown replaces the resize behavior with fixed square options: 16×16, 32×32, 48×48, 64×64, 128×128, or 256×256.
- Click Convert & Download. The file downloads automatically and the page shows a before-and-after preview plus original size, converted size, percentage change, and final dimensions.
- Use Reset or Remove to clear the file and start again.
Example Usage
Input file: IMG_4821.HEIC (4032×3024, 2.1 MB from an iPhone)
Format: JPG, Quality: 85%, Resize: Original Size
Downloaded file: IMG_4821-converted.jpg at 4032×3024, openable on any Windows PC or web uploader
For a blog header, switching the same photo to WebP at 80% with Resize set to 50% produces IMG_4821-converted.webp at 2016×1512, typically a large reduction shown as a negative percentage in the Size Change stat.
To build a favicon from a logo photo, choose ICO and set ICO Size to 32×32. The resize dropdown is bypassed, the image is drawn square at 32 pixels, and the result downloads as a PNG-based ICO ready to drop into your site root.
Note that JPG, GIF, and BMP output fill transparent areas with white, because none of those formats stores an alpha channel. If your source has transparency you want to keep, choose PNG, WebP, or AVIF instead.
Frequently Asked Questions
HEIC is the High Efficiency Image Container format Apple uses by default on iPhone and iPad. It compresses photos to about half the size of a comparable JPEG, but Windows, most browsers, and many websites lack the codec, so the file appears unopenable or gets rejected on upload.
Choose JPG for photographs, since it compresses continuous tones efficiently and is accepted everywhere. Choose PNG only when you need lossless quality or transparency, such as screenshots, logos, and graphics with sharp edges.
No. HEIC decoding and every conversion happen locally in your browser through JavaScript and the Canvas API, so your images stay on your own device.
Browsers can decode HEIC through a JavaScript library but essentially cannot encode it, because HEVC patent licensing keeps that encoder out of Chrome and Firefox. The tool checks support on load and disables the button instead of failing mid-conversion.
Yes. The image is redrawn onto a canvas, which discards EXIF metadata including GPS coordinates, camera model, and timestamps. That is useful for privacy, but keep your original file if you need that data.
Yes. The uploader also accepts JPG, PNG, WebP, TIFF, AVIF, BMP, and GIF, so you can convert between any of the supported formats in the same interface.
Converting from an efficient format to a less efficient one usually increases size. HEIC to PNG is the clearest example, since PNG is lossless and stores every pixel. Choose WebP or AVIF if a smaller result matters.
Only the still image is converted. Live Photo motion is not preserved, and animated GIF input is flattened to a single frame in the output.
