Batch Converter
Queue many files, apply shared output settings, and convert with controlled concurrency on this device. Per-file failures never stop the rest of the batch.
Files convert with controlled concurrency. Large batches stay in this browser tab.
Drop files here
Images, audio, or video — format is detected locally.
How to use this tool
Add files
Drop images, audio, or video. Format is detected locally in this tab.
Pick output and quality
The same settings apply to every file in the queue.
Convert and download
Save files one by one or as a ZIP. Failed items can be retried.
Frequently Asked Questions
More on quality loss: conversion quality guides · compression guides
Is this tool free?
Yes. Format Convertly tools run free in your browser with no signup required.
Do you store my files?
No. Processing stays on your device — there is no tool upload to our servers.
Does it work on mobile?
Yes. Use any modern phone, tablet, or desktop browser.
Need a format conversion instead?
Open the converters catalog for JPG, PNG, PDF, MP4, and hundreds of other pairs.
Ready to convert more formats?
Browse converters or jump back to the tool above.