Free online audio and video tools

Renders an HTML or CSS animation in headless Chromium on a server and encodes it with FFmpeg into an MP4 or WebM file.

Lets a teacher lay out piano notation with color-coded notes so beginners can read the score more easily.

Cuts a section out of a video and saves it as GIF, WebP or MP4, with controls for frame rate and output size.

Re-encode a video with FFmpeg compiled to WebAssembly, producing several quality variants to compare and download.

Shows live frequency bars from your microphone using the Web Audio API.

Reacts to microphone sound with eight animated modes such as plasma, particles, tunnel and fire.

Draw a crop box on a video frame and get the matching FFmpeg command, including an iPhone-friendly variant.

Simple single- or multi-speaker speech generator for the Gemini Flash TTS model with directorial tags.

Compose single-voice or conversation scripts, set delivery style and voices, and render speech with Gemini TTS.

Reads an MP3 file's ID3 tags, cover art and encoding details without uploading it.

Speaks text with the Web Speech API and lets you choose a system voice, rate, pitch and volume.