Hepburn Romanization Tool (lazesoftware.com)
Converts Japanese hiragana and katakana to Hepburn romanization, with reverse conversion also supported. Handles sokuon, hatsuon, and chōon rules, and includes a comprehensive conversion table.
HEX to ASCII (web-toolbox.dev)
Free tool for converting HEX (hexadecimal) to ASCII strings. Supports various input formats including space-separated, 0x notation, and newline-separated, useful for debugging and data analysis.
Honorific Converter (toolpods.io)
AI tool that converts casual Japanese text into polite honorific (keigo) expressions for business use.
How Many Days Until Saturday?
An online tool that counts the remaining days until Saturday (or any day of the week). Also supports fullscreen display and image download.
HSL/HSV Color Picker (www.oh-benri-tools.com)
A color picker for adjusting HSL, HSV, RGB, and alpha values with sliders. Features color saving and history, and supports preset palettes including Material Design and Flat UI.
HTML Entities (entity.onl.jp)
A web tool to look up and search HTML entities (such as &, <, etc.). Useful for converting characters to HTML entities and investigating special characters.
HTML Escape / Unescape (web-toolbox.dev)
Free tool for escaping and unescaping HTML special characters such as <, >, &, and quotes. Useful for safely outputting HTML content and checking during debugging.
HTML Escape Tool (saruwakakun.com)
A web tool for escaping and unescaping HTML special characters (&, <, >, ", '). Optionally wraps output in <code> or <pre> tags. A handy utility for web developers.
HTML Formatter For WEB (atl2.net)
A browser-based HTML formatting tool that also formats embedded JavaScript and CSS. Supports configurable indentation (tabs, 4-space, 2-space) and options for handling indentation within comments.
HTML Table Generator (boost-tool.com)
A free online tool to generate HTML table code through a GUI interface. Intuitively add or remove rows and columns, edit cells, and copy the generated HTML code directly.
HTML Tag Character Replacement Tool (tool.muzin.org)
A tool to convert HTML special characters (<, >, &) and their entity references (<, >, &) bidirectionally. Useful for escaping/unescaping HTML tags to enable or disable them.
HTML Tag Remover (web-toolbox.dev)
Free tool for stripping HTML tags from text to extract plain text. Handy for bulk-removing HTML tags mixed into text copied from the web.