Best Free File Converters for Multiple Photos

Media Human Audio Converter

• User quote: "Look no further than XLD on Mac."

Fre:AC

• Options for customizing like tagging, output folder, encoder, cue sheets, merging tracks, etc.
• Works great for batches.

XLD

• User quote: "I just use FFmpeg via command line."

iTunes

• User quote: "iTunes does this."

Audacity

• User quote: "Audacity is free and does this."
• Great for batch conversion of files to mp3 for online use.

NCH Switch File

• User quote: "NCH Switch File is great."

FFmpeg

• User quote: "Learn FFmpeg and you'll be ready for anything."

Flic Flac

• User quote: "Flic Flac"

ZamZar

• Another site similar to the above options.

Imagemagick

• User quote: "Imagemagick is extremely powerful."

IrfanView

• User quote: "IrfanView can do that."

XnView MP

• User quote: "XnView MP can do that."

Best Format Factory alternative

• User quote: "Why not just use Format Factory?"

BlueBeam

• User quote: "People at my company tend to prefer BlueBeam for this."

In summary, XLD, FFmpeg, Audacity, and Imagemagick are popular choices for batch file conversion. Each tool has its own strengths, so the best one for you may depend on your specific needs and preferences.