How to convert videos
- Drop a video into the box above.
- Choose the output format; optionally set the quality, resolution or a target file size.
- Click Convert and download the result.
Why GlideConvert?
- Private by design. Your files are converted on your own device by your browser — they are never uploaded to a server. That keeps them private, avoids upload waits and means there is no queue.
- Fast. Images convert in a fraction of a second; video uses your device’s hardware encoder and is often simply repackaged without re-encoding.
- Free. No sign-up, no watermark. 10 images, 5 audio files or one video at a time — Pro lifts the limits and removes ads.
Frequently asked questions
Which video formats are supported?
Input: MP4, MOV, MKV, AVI, WebM, WMV, FLV, 3GP, MPG, M4V, TS and OGV and GIF. Output: MP4, MOV, MKV, AVI, WebM, GIF, and audio as MP3, WAV, M4A, AAC, OGG, FLAC and OPUS.
Which format should I choose?
Why is video conversion so fast here?
Modern browsers can use your device’s video hardware through the WebCodecs API, and when the video is already in a compatible codec it is simply repackaged without re-encoding.
Is there a file size limit?
On the free plan each video or audio file can be up to 500 MB and each image up to 100 MB. With Pro the limit is 4 GB per file. Because everything happens on your device, the practical limit for very large files is your device’s memory.
Are my files uploaded to a server?
No. GlideConvert runs entirely in your browser: images are processed with the browser’s built-in codecs and WebAssembly, video and audio with hardware-accelerated WebCodecs (or a WebAssembly build of FFmpeg for older formats). Nothing is sent anywhere — you can even disconnect from the internet once the page has loaded.
Does it work on iPhone, Android, Mac and Windows?
Yes. It works in any up-to-date browser — Chrome, Edge, Safari, Firefox or Samsung Internet — on phones, tablets and computers, with nothing to install. Long or 4K videos convert faster on a computer than on a phone.