Folio

Calm reading, open source.

A distraction-free reader for PDF and EPUB. Paper-like themes, real typography, chrome that gets out of the way.

Download View on GitHub

Reading software should feel like a book,
not a browser tab.

Most desktop readers fall into two traps: feature-heavy but ugly, or pretty on mobile only. Folio started as an answer to that gap — a small, serious app you can trust with long sessions.

Good reading software should feel like a book, not a browser tab full of toolbars.

Everything you need. Nothing you don't.

PDF & EPUB

Read both formats in one app. PDF rendered via WebAssembly, EPUB with full continuous scroll and chapter navigation.

Bookshelf

Your library at a glance. Cover thumbnails, last-read position, and automatic file remapping when you move things around.

Three Themes

Sepia for evening, light for day, dark for night. Carefully tuned paper tones — not just inverted colors.

Persian & English

Full RTL support with Vazirmatn, Samim, Shabnam, and more. Plus carefully chosen English reading faces like Literata.

Distraction-Free

Chrome hides when you read. Header and footer appear on edge hover or press M. The page is the experience.

Reading Guide

An optional screen-fixed leading line to keep your place. Adjustable height, hue, and lock position.

Paper, not screens.

Three reading modes, each tuned to feel like real paper at different times of day.

The Evening Reader

Warm paper tones for late-night sessions. Easy on the eyes, rich like aged parchment.

Sepia

Daylight Clarity

Clean and crisp for bright rooms. High contrast, cool tones, maximum legibility.

Light

Midnight Pages

Soft charcoal, not pure black. Warm ink on cool gray — designed for the darkest hours.

Dark

Your books, everywhere.

Desktop

Windows & Linux. Native binary, no Electron.

Go Wails PDFium
Download for Desktop

Android

Same calm UI in a mobile shell.

Kotlin WebView
View Android Build

Server

Sync reading progress & Calibre library.

Go SQLite Docker
View Server Docs

Fork freely.

Folio is built in the open. Read the code, suggest features, contribute improvements. Good reading software should be free.

MIT License