Payas Web Kit · Editor

Payas Editor

A privacy-first WYSIWYG rich-text editor that runs entirely in your browser and saves your work as Markdown. Fully offline-capable PWA — no server, no sign-in, no build step.

Open Editor Docs

id::payas-editor · v3.0.0 · stable

KitPayas Web Kit

PlatformBrowser · Web · PWA

StackHTML · CSS · Vanilla JS

StoragelocalStorage

Import.md · .txt

ExportMarkdown · TXT · HTML

OfflineService Worker · Cache API

LicenseMIT

Open App

Tabs

Unlimited

Multi-document

Auto-save

30 s

localStorage

Formats

MD · TXT · HTML

Offline

PWA

Installable

features

What Payas Editor does

WYSIWYG editing

Rich text formatting — bold, italic, headings, lists, tables, blockquotes, task items, drop caps, text color, and highlight — with a full toolbar and keyboard shortcuts.

Saves as Markdown

One-click download as .md. A custom bidirectional converter handles headings, lists, tables, blockquotes, links, images, code blocks, and GFM extensions.

Multi-tab documents

Open unlimited documents as browser-style tabs. Reorder, duplicate, and rename tabs. Tabs persist across sessions with dot indicators for unsaved changes.

Find & Replace

Full-text search with match count, case-sensitive toggle, step-through navigation, single replacement, and replace-all. Triggered with Ctrl+F.

Split view

Three view modes: Write (editor only), Split (editor + live Markdown preview side by side with resizable divider), and Preview (read-only render).

Offline PWA

Installable Progressive Web App with Service Worker caching. Loads instantly and works completely offline after the first visit. Install from Chrome, Edge, or Safari.

technical · details

Technical details

Entry point	`payas-editor.html` — single HTML file, no build required
Stack	HTML5 · CSS3 · Vanilla JavaScript ES2020
Dependencies	Bootstrap Icons 1.11.3 (local, fully offline) · Google Fonts (JetBrains Mono, Fraunces, DM Sans)
PWA	`manifest.json` · `sw.js` Service Worker (cache-first offline strategy)
Storage	`localStorage` — auto-save every 30 s, tab state, settings
Import formats	.md, .txt (drag & drop or open dialog, multiple files at once)
Export formats	Markdown (.md) · Plain Text (.txt) · HTML (.html)
Keyboard shortcuts	Ctrl+S save · Ctrl+T new tab · Ctrl+W close tab · Ctrl+F find · Ctrl+B/I/U format · Ctrl+Z/Y undo/redo
Settings	Font size 11–24 px · Line height · Editor width · Sidebar width · Spell check · Focus mode · Live MD sync
Developer	Saman Wijesinghe
License	MIT