# Batch HEIC Converter

> Batch convert hundreds of HEIC photos to JPG, PNG, WebP or AVIF. Drop a folder, pick a preset, pause or retry, then download one ZIP. Free and private.

URL: https://ihateheic.com/batch-heic-converter  
Updated: 2026-10-04

Built for the big jobs. Drop a folder of a few hundred iPhone photos, choose a preset, and let your computer chew through them while you make a coffee.

This tool runs entirely in the browser: photos are decoded and encoded on the visitor’s device and are never uploaded. It is free, needs no sign-up and works offline after the first visit.

## How to use it

1. Drag a folder or a big selection of HEIC files onto the box above. On desktop you can choose a folder directly.
2. Pick a preset such as **Windows / JPG** or **Web ready**, or set format, quality and size yourself.
3. Watch the progress, pause or retry if needed, then download everything as one ZIP.

## Presets for the common jobs

Most batches have a goal: make these open on Windows, make them small for the web, make them fit in an email. Presets set format, quality, size and colour for that goal in one click. You can still tweak anything afterwards.

| Preset | What you get | Use it for |
| --- | --- | --- |
| Windows / JPG | Full-size JPG | Opening on any Windows PC or in Office |
| Web ready | WebP, longest edge 1920 px | Websites, blogs, online shops |
| Email friendly | Smaller JPG | Attaching lots of photos without hitting limits |
| Free up space | Compact output | Shrinking a big photo archive |
| Maximum compatibility | JPG converted to sRGB | Old software, printers, picky upload forms |

Need something else, like PNG for editing or AVIF for a modern site? Pick the format directly. HEIC is also available as an output if you're re-encoding other images, though it's slower than the rest.

## Designed not to fall over

Batch converters in the browser have a reputation for freezing tabs. The trick is not to load everything at once.

- **Memory-aware concurrency.** Phones work on one or two files at a time; desktops run more, spread across CPU cores. Each photo is decoded, converted and released before memory fills up.
- **Pause and resume.** Need your laptop back for a video call? Pause, then pick up later.
- **Retry failed files.** A corrupt or unusual file won't sink the batch. It's flagged, and you can retry the stragglers.
- **Cancel.** Changed your mind about the settings? Stop the batch and start again.

## Getting the files in

- Drop a folder (desktop browsers), or choose one with the folder picker.
- Select hundreds of files from a file dialog.
- Paste images from the clipboard.
- On iPhone, select many photos straight from the Photos library.

Mixed folders are fine. HEIC and HEIF files are the main event, including grid images and 10-bit photos.

## Getting the files out

One ZIP is the default for big batches, because nobody wants 400 separate download prompts. Smaller jobs can be downloaded file by file, and on iPhone you can save results to Photos via the Share sheet.

## Batch jobs without the upload queue

Online batch converters spend most of their time uploading your photos and downloading them again. This one skips both legs: files are read from your disk, converted locally and zipped in the browser. It even works offline. If your batch is strictly "HEIC in, JPG out", the simpler [batch HEIC to JPG](https://ihateheic.com/heic-to-jpg-batch) page is set up for exactly that. For size targets, see [Compress HEIC](https://ihateheic.com/compress-heic).

## FAQ

### How many HEIC files can I convert at once?

There's no fixed limit. Hundreds of photos in one go is normal on a laptop. The practical ceiling is your device's memory, and the converter manages that by limiting how many files it works on at the same time.

### Can I convert a whole folder of HEIC files?

Yes. On desktop browsers you can drop or choose a folder and every HEIC inside is picked up. On phones, select multiple photos from your library instead.

### What happens if some files fail?

The batch carries on. Failed files are marked, and you can retry just those once the rest are done.

### Can I pause a big conversion?

Yes. Pause stops new files from starting, and resume picks up where it left off. Cancel stops the batch entirely.

### Why is it faster on my laptop than my phone?

Concurrency adapts to the device. Phones convert one or two photos at a time to stay stable, while desktops run more in parallel across their CPU cores.

### Is batch converting private?

Yes. Every file is processed on your own device. A folder of 500 photos never leaves your computer, which also means no upload wait.

### Which preset should I use for Windows?

Windows / JPG. It produces standard JPGs that open in Windows Photos, Explorer and every Office app without any extensions.