FileFormat.Info is a comprehensive resource for file format standards, including detailed specifications for Unicode, MIME types, and file extensions, plus online conversion tools.

Zamzar is an online file conversion company that provides software and services for converting files into various formats, catering to both consumers and businesses.

FileZigZag is an online file conversion service that offers a wide variety of free and fast conversions for videos, audio, images, documents, and archives.

Converter365 is an online file conversion tool for various formats

PDF is an online file conversion service that allows users to easily convert any files to PDF without installation.

Convertr.org is a free, fast, and secure online file converter supporting 300+ audio, video, image, and document formats without requiring software installation.

Convertidor.mx is a free online tool suite for file conversion, including MP4 to MP3, YouTube/TikTok downloaders, and PDF manipulation, serving users in Mexico.

FileMagics is a free online file conversion tool for PDFs, Word, Excel, images, and videos.

XConvert is an online file conversion tool for converting various file formats including PDF, PS, JPG, and more.