Tools

Free, client-side web tools. No install, no server, no tracking.
Each one is a single HTML file — just open and use.

📝

MD

Markdown viewer & editor with live preview, syntax highlighting, math (KaTeX), Mermaid diagrams, PDF export, and shareable links.

Markdown KaTeX Mermaid PDF
tools.pinishv.com/md
🎨

Pixel

Drawing & photo editor with brushes, shapes, text, crop, resize, filters, layers, undo/redo, zoom, and export to PNG/JPG/WebP.

Canvas 2D Filters Layers Crop
tools.pinishv.com/pixel
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JSON

JSON formatter, validator, tree viewer, diff, and transform toolkit — sort keys, flatten, decode JWT/Base64, generate TypeScript, and more.

Format Validate Tree Diff TypeScript
tools.pinishv.com/json

Philosophy

Single file — one HTML, nothing to build
Client-side — your data never leaves the browser
No install — zero dependencies, just open