---
title: "Video & Audio Tools — Compress and Convert | Compress Pro"
description: "All video and audio tools in one place — compress MP4 or MOV, convert formats, extract audio, make GIFs, fix subtitles. Private, free, in your browser."
canonical: https://compress-pro.com/video-audio-tools
---

# Video & audio tools.

> Shrink and convert video or audio — right in your browser.

Video work in a browser used to mean uploading gigabytes to someone’s server and waiting in line. These pages use your device’s own hardware codecs through WebCodecs instead — **compression and conversion at native speed, with the file never leaving your machine**. Audio rides the same pipeline, from MP3 encodes to lossless FLAC.

**No uploads · No ads · Free & open source.**

## Compress & core tools

- [Compress videos](https://compress-pro.com/compress-video)
- [Compress & Convert audio](https://compress-pro.com/compress-audio)
- [Convert SRT to VTT](https://compress-pro.com/srt-to-vtt)

## Convert

- [Convert MOV to MP4](https://compress-pro.com/mov-to-mp4)
- [Convert WebM to MP4](https://compress-pro.com/webm-to-mp4)
- [Convert MKV to MP4](https://compress-pro.com/mkv-to-mp4)
- [Convert MP4 to WebM](https://compress-pro.com/mp4-to-webm)
- [Convert video to GIF](https://compress-pro.com/video-to-gif)
- [Convert MP4 to GIF](https://compress-pro.com/mp4-to-gif)
- [Convert GIF to MP4](https://compress-pro.com/gif-to-mp4)
- [Convert MP4 to MP3](https://compress-pro.com/mp4-to-mp3)
- [Convert WAV to MP3](https://compress-pro.com/wav-to-mp3)
- [Convert M4A to MP3](https://compress-pro.com/m4a-to-mp3)
- [Convert FLAC to MP3](https://compress-pro.com/flac-to-mp3)
- [Convert WAV to FLAC](https://compress-pro.com/wav-to-flac)
- [Convert OPUS to MP3](https://compress-pro.com/opus-to-mp3)
- [Convert OGG to MP3](https://compress-pro.com/ogg-to-mp3)
- [Convert AAC to MP3](https://compress-pro.com/aac-to-mp3)
- [Convert MP3 to WAV](https://compress-pro.com/mp3-to-wav)
- [Convert MP4 to WAV](https://compress-pro.com/mp4-to-wav)
- [Convert WebM to MP3](https://compress-pro.com/webm-to-mp3)
- [Convert MOV to MP3](https://compress-pro.com/mov-to-mp3)
- [Convert MP3 to M4A](https://compress-pro.com/mp3-to-m4a)
- [Convert WAV to M4A](https://compress-pro.com/wav-to-m4a)
- [Convert MP3 to OGG](https://compress-pro.com/mp3-to-ogg)
- [Convert WAV to Opus](https://compress-pro.com/wav-to-opus)
- [Convert VTT to SRT](https://compress-pro.com/vtt-to-srt)
- [Convert ASS to SRT](https://compress-pro.com/ass-to-srt)

## More tools

- [Compress MP4 videos](https://compress-pro.com/compress-mp4)
- [Compress MOV videos](https://compress-pro.com/compress-mov)
- [Remove audio from video](https://compress-pro.com/remove-audio-from-video)

## How it works

1. Choose a tool — compress a video, convert a format or pull the audio out.
2. Drop the file; your device’s own hardware decoder does the work.
3. Download the result — no upload, no queue, no watermark.

## Frequently asked questions

### How can a browser compress video this fast?

The same way native apps do — through your device’s hardware encoder, exposed to the page by WebCodecs. There is no upload and no server queue, which is where web tools usually lose their time.

### Video or audio page — which do I need?

If the picture matters, a video tool; if only the sound does, an extractor like MP4 to MP3 gives you a small audio file and discards the rest. Subtitle converters handle the text side.

### Is there a length or size limit?

No hard limit — processing is bounded by your device’s memory and speed, not by an upload cap. Hour-long recordings are routine.

### Do my videos get uploaded?

Never — decoding, re-encoding and muxing all happen locally. A video is the largest, most personal file most people handle; that is exactly why this site processes it on your device.

---

Part of [Compress Pro](https://compress-pro.com/) — every tool page has a markdown twin at `<page url>.md`. Full tool index: [llms.txt](https://compress-pro.com/llms.txt)