Single-purpose browser-based tools and converters
discordtimeconverter.org
What it does: A web-based tool that converts dates and times into nine Discord timestamp formats, supports decoding existing codes, generates countdowns, and handles IANA timezones with daylight saving time awareness.
usedeepmark.com
What it does: Your browser, X, Instagram and YouTube bookmarks in one private library. AI transcribes and describes every save; semantic search finds it in natural language.
kitzos.com
What it does: Free online tools that run entirely in your browser — no signup, no uploads. PDF, images, text, dev tools, calculators, converters, audio, and more.
agendahero.com
What it does: Agenda Hero converts text, images, and PDFs into calendar events for Google, Apple, and Outlook, and creates shareable digital and printable calendars for families, teams, schools, and organizations.
hsk996.com
What it does: HSK Download is a media processing platform for YouTube content, enabling users to download videos in resolutions up to 8K, extract MP3 audio, and save subtitles or covers. It includes AI-powered tools for video summarization, transcription, and translation. The service supports batch processing for playlists and channels via a web interface or a dedicated Windows client. It is designed for archiving and organizing content where the user has ownership or explicit licensing.
webbrain.one
What it does: WebBrain is a free, open-source browser extension that brings AI agent capabilities to your browser. It reads pages, extracts data, and automates web tasks — powered by your choice of LLM.
mayankpdfhub.online
What it does: A free browser-based PDF toolkit for merging, splitting, compressing, converting, protecting, unlocking, and editing PDF documents.