12 tools
Audio tools
MP3 is the one format nobody can escape, and it is also the one every browser can play and no browser can write. These carry their own MP3 encoder so the conversion happens on your machine rather than on somebody's server, which matters because the audio people convert is usually a lecture, an interview or a voice note. Nothing is uploaded and there is no length cap beyond what your device will hold.
- VIDEO -> MP3Video to MP3Pull the soundtrack out of a video and save it as MP3.A lecture or a talk you want to listen to while walkingOpen tool
- WAV -> MP3WAV to MP3Convert a WAV recording to MP3, around a tenth of the size.A voice recorder or field recorder full of WAV filesOpen tool
- MP3 -> WAVMP3 to WAVConvert an MP3 to uncompressed WAV, for editing software.Importing into editing software that wants uncompressed audioOpen tool
- M4A -> MP3M4A to MP3Convert an M4A or AAC file to MP3, which plays on anything.Voice memos off a phoneOpen tool
- AUDIO -> SMALLERCompress AudioMake an audio file smaller, with the size shown before you start.An email attachment limitOpen tool
- AUDIO -> TRIMMEDMP3 CutterCut an MP3 or any audio file down to the part you want.The useful thirty seconds of a long recordingOpen tool
- AUDIO + AUDIO -> ONEAudio JoinerJoin several audio files end to end, in the order you choose.Chapters or takes recorded separatelyOpen tool
- AUDIO -> AUDIOAudio ConverterConvert audio between MP3, M4A, WAV and OGG, on your own device.A file the thing you need to use will not openOpen tool
- OGG -> MP3OGG to MP3Convert an OGG or Opus file to MP3, which plays everywhere.A WhatsApp or Telegram voice noteOpen tool
- FLAC -> MP3FLAC to MP3Convert a lossless FLAC to MP3, around a fifth of the size.A lossless library that will not fit on a phoneOpen tool
- AAC -> MP3AAC to MP3Convert an AAC file to MP3 for players that will not open it.A car stereo or an older playerOpen tool
- MP3 -> M4AMP3 to M4AConvert an MP3 to M4A, for Apple devices and smaller files.Making an iPhone ringtoneOpen tool
The other categories
- PDF toolsMerge, split, compress, sign and convert PDF files in your browser. Free, no signup, no watermark, and the file never leaves your device.
- Image toolsCompress, resize, crop, convert and edit images in your browser. Free, no signup, no watermark, and your photos are never uploaded.
- Video toolsCompress video and pull stills out of it, in your browser. Free, no signup, no watermark, and the video never leaves your device.
- Data toolsFormat and validate JSON, XML and HTML, decode base64 and URLs, and diff two documents. Nothing you paste is sent anywhere.
- All 126 toolsThe full directory, grouped by what each one works on.