- VTT - A VTT file is a text file saved in the Web Video Text Tracks (WebVTT) format. It contains supplementary information about a web video, including subtitles, captions, descriptions, chapters, and metadata. VTT files do not contain any video data.
- SRT - A SRT file is a text file is a SubRip Subtitle file used along with video data. These types of files hold video subtitle information like the start and end timecodes of the text and the sequential number of subtitles. SRT files do not contain any video data.
- Base 64 - Base64 is a group of similar binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. The term Base64 originates from a specific MIME content transfer encoding.
- MD5 - MD5 i.e. Message Digest Method 5 is a cryptographic hash algorithm used to generate a 128-bit digest from a string of any length. It represents the digests as 32 digit hexadecimal numbers.
- Slug - A Slug is the unique identifying part of a web address, typically at the end of the URL. In the context of MDN, it is the portion of the URL following "<locale>/docs/". It may also just be the final component when a new document is created under a parent document.
- WebP - WebP is an image file format which contains image data with both lossless and lossy compression. Basically, WebP is a derivative WebM video format.
- ICO - ICO file format refers to an image file format that contains small size computer icon images. ICO format is capable of containing one or multiple small images of multiples sizes and color depths.