Are my files uploaded?

No. Reading, converting and saving all happen inside your browser, and the file is never sent anywhere. No account is needed either.

Which formats are supported?

In: images as JPG, PNG, WebP, HEIC, AVIF, GIF, SVG, BMP and ICO; audio as MP3, WAV, M4A, FLAC, OGG, Opus and AIFF among others; and the audio track of video files (MP4, MOV, WebM and more). Out: PNG, JPG, WebP, WAV and MP3 — those five.

Can I convert a video into another video format?

No. Re-encoding picture would mean downloading a roughly 30 MB engine first, and it has not been confirmed to run reliably here, so it is switched off. From a video, only the audio (MP3 or WAV) can be taken out.

Does converting lose quality?

It depends where it is going. Converting to PNG or WAV adds no new loss. JPG, WebP and MP3 are lossy, so converting into them does lose quality. Taking a file that was already lossy into a different lossy format loses it twice.

Can it handle large files and long videos?

Audio is expanded into memory in one piece, so a long video can stop partway on a device without much free memory. The size needed is estimated from the duration and warned about before you start; if you see that, split the file or try it on a desktop browser.

Can I convert several files at once?

Yes. The batch conversion page takes a whole set, lets you pick a target per file, works through them in order and hands the results back as one ZIP.

What is the difference between lossless and lossy?

PNG and WAV are lossless — the original data can be reconstructed exactly. JPG, WebP and MP3 are lossy: they throw information away to get smaller. Converting a lossy file back to a lossless one does not bring the discarded information back. It only makes the file bigger.

An image format made for the web. At the same apparent quality it is smaller than JPG, and unlike JPG it keeps transparency. Every major browser displays it, but older apps and some editors still cannot open it.

Why convert HEIC to JPG?

HEIC is the standard photo format on recent iPhones, and its advantage is being smaller than JPG at the same quality. But browsers other than Safari, and some Windows apps, cannot open it as-is, so JPG is the safe choice when you are handing the file to someone else. It is also the most common destination for a HEIC here.

When should I use WAV rather than MP3?

WAV is uncompressed, so use it when the file is going into editing, stem separation or analysis. MP3 is lossy and small, so use it when the file is going to be listened to or passed around. MP3 export here is fixed at 192 kbps.

What does extracting the audio from a video mean?

A video file is picture and sound packed into one box. The browser can read the audio track on its own, so you can drop an MP4, MOV or WebM in and get an MP3 or WAV out. The picture is discarded.

What is the difference between a container and a codec?

The container is the box — the .mp4 or .mov part. The codec is how the contents inside are compressed. A file can have an extension that is supported while holding a codec the browser cannot read, which is why what opens differs between browsers. When that happens, the reason is shown on the spot.

Images · audio · video

File converter

Input

Drag & drop a file

or click to choose

Images (JPG, PNG, WebP, HEIC, AVIF, GIF, SVG, BMP, ICO), audio (MP3, WAV, M4A, FLAC, OGG, Opus, AIFF) and video (MP4, MOV, WebM and more — audio extraction)

Result

From—

To—

Lots of files? Switch to batch mode →

Change the extension. The source is detected for you.

Related purposes

iPhone photos that will not open on Windows Pull just the audio out of a video Make images smaller with WebP Audio your software or hardware will not load

Highlights

Source detected automatically: The source format is detected from the file you drop. All you choose is the target.
Targets suggested in order: For each source format, candidate targets are listed in order of preference, with the reason — compatibility, lossless, smaller — and a relative strength. The ranking is based on common uses, not on usage statistics.
Only writable formats are shown: The browser can write five formats here: PNG, JPG, WebP, WAV and MP3. Candidates that cannot be produced in your environment are not shown.

How to use

Choose a file
Drag and drop an image, audio or video file, or click to choose one. The source format is detected for you and shown under "From".
Pick the target
Candidates are listed best-first, and the one marked as best is already selected. Each carries the reason it is suggested and a relative strength, so pick another if your use is different.
Convert and save
Press the convert button and the work runs on the spot. When it finishes a save button appears, and the download comes from there.

Glossary

What is the difference between lossless and lossy?: PNG and WAV are lossless — the original data can be reconstructed exactly. JPG, WebP and MP3 are lossy: they throw information away to get smaller. Converting a lossy file back to a lossless one does not bring the discarded information back. It only makes the file bigger.
What is WebP?: An image format made for the web. At the same apparent quality it is smaller than JPG, and unlike JPG it keeps transparency. Every major browser displays it, but older apps and some editors still cannot open it.
Why convert HEIC to JPG?: HEIC is the standard photo format on recent iPhones, and its advantage is being smaller than JPG at the same quality. But browsers other than Safari, and some Windows apps, cannot open it as-is, so JPG is the safe choice when you are handing the file to someone else. It is also the most common destination for a HEIC here.
When should I use WAV rather than MP3?: WAV is uncompressed, so use it when the file is going into editing, stem separation or analysis. MP3 is lossy and small, so use it when the file is going to be listened to or passed around. MP3 export here is fixed at 192 kbps.
What does extracting the audio from a video mean?: A video file is picture and sound packed into one box. The browser can read the audio track on its own, so you can drop an MP4, MOV or WebM in and get an MP3 or WAV out. The picture is discarded.
What is the difference between a container and a codec?: The container is the box — the .mp4 or .mov part. The codec is how the contents inside are compressed. A file can have an extension that is supported while holding a codec the browser cannot read, which is why what opens differs between browsers. When that happens, the reason is shown on the spot.

Frequently asked questions

Are my files uploaded?: No. Reading, converting and saving all happen inside your browser, and the file is never sent anywhere. No account is needed either.
Which formats are supported?: In: images as JPG, PNG, WebP, HEIC, AVIF, GIF, SVG, BMP and ICO; audio as MP3, WAV, M4A, FLAC, OGG, Opus and AIFF among others; and the audio track of video files (MP4, MOV, WebM and more). Out: PNG, JPG, WebP, WAV and MP3 — those five.
Can I convert a video into another video format?: No. Re-encoding picture would mean downloading a roughly 30 MB engine first, and it has not been confirmed to run reliably here, so it is switched off. From a video, only the audio (MP3 or WAV) can be taken out.
Does converting lose quality?: It depends where it is going. Converting to PNG or WAV adds no new loss. JPG, WebP and MP3 are lossy, so converting into them does lose quality. Taking a file that was already lossy into a different lossy format loses it twice.
Can it handle large files and long videos?: Audio is expanded into memory in one piece, so a long video can stop partway on a device without much free memory. The size needed is estimated from the duration and warned about before you start; if you see that, split the file or try it on a desktop browser.
Can I convert several files at once?: Yes. The batch conversion page takes a whole set, lets you pick a target per file, works through them in order and hands the results back as one ZIP.