You can edit fonts online using various tools. For instance, Glyphr Studio [1] is a browser-based font editor that allows you to import SVG, OTF, TTF, and WOFF files, combine glyphs from different fonts, and export font files from your browser. It's also open-source and free.

Another option is FontArk [4], an innovative browser-based font editor in advanced Open Beta version, which features a versatile real-time multiple glyphs editing system. Remember to save copies of your work along the way, as it's still in the beta phase.

Additionally, there are online font editors that enable you to make and edit TTF fonts, like the one mentioned in [6]. This tool provides a powerful software solution for designers and typography enthusiasts to create and customize their own fonts or open existing TTF files and make changes.

Lastly, if you're looking to create customized text effects or logos with unique text styles, consider using TextStudio's font style generator [7]. This online application offers a simple and intuitive interface for generating 3D text style effects to set you apart from competitors.

In summary, various online tools allow you to edit and create fonts, including Glyphr Studio, FontArk, online TTF font editors, and text effect generators like TextStudio. Choose the one that best fits your needs [information is missing on].