Single-file HTML tools you can open in any browser. No installs, no accounts, no friction — just open and use.
Collaborative P2P drawing canvas. Create a room, share the link, sketch together in real-time.
Peer-to-peer collaborative Markdown editor with live preview. Edit documents together in real-time.
Collaborative P2P slide deck editor. Drag-and-drop editing with charts, diagrams, and fullscreen presentation mode.
Radial mind map with markdown notes, cross-references, PNG round-trip, and live P2P collaboration.
Collaborative P2P Gantt chart builder with task groups, milestones, custom timelines, and PNG round-trip.
Pick colors, convert between formats, generate palettes, and check contrast accessibility.
Validate, format, and convert between JSON, YAML, TOML, and XML. Tree view, path copying, and comparison.
Spreadsheet-style editing for CSV and TSV files. Sort, filter, and transform tabular data.
Test and debug regular expressions with live matching, group highlights, and a quick-reference guide.
Compare two texts side by side with clear highlights showing every difference. Paste, compare, done.
Convert text between character encodings (UTF-8, CP1252, Latin-1, Shift-JIS…), debug mojibake byte-by-byte, plus Base64, URL, and Hex.
Generate UUID v4/v7, ULID, and NanoID in bulk, compute SHA digests, and sign HMACs — all client-side.
Decode cron expressions into plain English and build them from phrases or dropdowns — with upcoming run times.
See everything your browser exposes: IP address, screen info, hardware, capabilities, timezone, and more.
Wall clock, countdown timer, stopwatch, and pomodoro — all in one tab.