Free online HTM to OGG converter

A saved webpage may need to become spoken audio for a player or workflow that accepts OGG but not HTML. Since HTM stores webpage markup and text rather than sound, this is usually a text-to-speech conversion.

What the HTM format is

HTM is an extension for an HTML webpage, equivalent in format to .html. It can contain readable text, links, and references to images or media. Web editors and content systems create HTM files; browsers may also save pages with this extension. The page may depend on separate files or online resources.

What the OGG format is

OGG is a container for audio formats such as Vorbis and Opus. Ogg Vorbis is a common choice for compressed audio and is supported by many desktop media players and audio tools, though some devices and applications accept only specific codecs. Converting webpage text to OGG produces synthesized speech; it does not preserve the page layout.

How to convert HTM to OGG

Online on 101convert.com

1. Open the HTM-to-OGG converter on 101convert.com and upload the file.
2. Before converting, choose the voice language and reading speed.
3. Start the conversion and download the resulting OGG file.

You can convert several files in one batch. The page displays the per-file size limit.

Offline with desktop software

On Linux, macOS, or Windows with the command-line tools installed, Lynx, eSpeak NG, and FFmpeg provide a free, open-source workflow. Lynx extracts readable page content, eSpeak NG synthesizes it as speech, and FFmpeg encodes the audio as Ogg Vorbis. Run these commands in the directory containing the HTM file:

1. lynx -dump -nolist input.htm > spoken.txt
2. Review spoken.txt and remove material you do not want read aloud, such as navigation labels.
3. espeak-ng -v en -s 160 -f spoken.txt -w speech.wav
4. ffmpeg -i speech.wav -c:a libvorbis -q:a 5 speech.ogg

Replace en with an installed eSpeak NG voice code as needed. Install the tools through your operating system’s package manager or their Windows distributions.

Quality and limitations

The result is synthesized narration, not an audio copy of the webpage. If the HTM file links to or embeds an existing recording, extract that recording separately; the text-to-speech workflow will not convert its sound. The example FFmpeg command creates Vorbis audio at quality level 5, while compatibility depends on whether the target player supports Ogg Vorbis.