Data | Precision | Structure
A curated set of standalone HTML tools for developers. Each tool is a single file — no build steps, no dependencies, no accounts. Just open and use.
Philosophy
Every NibSet tool is a self-contained HTML file. Download it, bookmark it, host it — it just works.
No npm install, no build tools, no frameworks. Each tool ships as a single .html file.
Everything runs in your browser. Your data never leaves your machine. No server, no tracking.
Built for developers who value getting things done over configuring things.
The Toolset
Each tool covers one domain. Together they form a complete developer utility belt.
Collaborative P2P drawing canvas. Create a room, share the link, and sketch together in real-time.
Peer-to-peer collaborative Markdown editor with live preview. Edit documents together in real-time.
Build slide decks from Markdown. Present directly in the browser with keyboard navigation.
PlannedValidate, format, diff, and query JSON data. Tree view, path copying, and schema validation.
PlannedSpreadsheet-style editing for CSV and TSV files. Sort, filter, and transform tabular data.
PlannedTest regular expressions with real-time matching, capture groups, and a quick-reference cheatsheet.
PlannedSide-by-side text comparison with syntax-aware diff highlighting. Paste, compare, done.
PlannedPick colors, convert between formats, generate palettes, and check contrast accessibility.
PlannedBase64, URL encoding, JWT decode, hash generation, and other everyday transformations.
PlannedHow It Works
Grab any .html file from the repo. Each tool is completely self-contained.
Double-click to open in your browser. No server needed. Works offline.
That's it. No sign-up, no config, no tutorials. Tools built for people who build.