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 page is set up for exactly that. For size targets, see Compress HEIC.