# Pico PDF Viewer — Offline PDF & Markdown Viewer

> Offline PDF & Markdown Viewer (iPhone/iPad app by SHIH WEI LING.)

- Source: https://appshunter.io/ios/app/pico-pdf-viewer/id6804466063 (this page in markdown: same URL + `.md`)
- Developer: [SHIH WEI LING](https://appshunter.io/developer/6803189463)
- Category: Utilities
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 7 MB
- Languages: Chinese (Traditional, Taiwan)
- Released: 2026-09-01
- Data updated: 2026-10-09

## What is Pico PDF Viewer?

Pico PDF Viewer is a very lightweight, local document viewer built around fast switching: authorize one folder, and jump between the PDFs and Markdown files inside it without picking a new file every time.

■ PDF reading
・Continuous scroll or single-page mode, pinch to zoom and pan for detail
・Full-text search (on supported devices) — jump straight to a hit, highlighted
・Bottom thumbnail strip to jump around long documents quickly
・Immersive controls — tap anywhere to show or hide them

■ Markdown viewing and editing
・Fully styled preview: headings, lists, quotes, code blocks, tables
・Edit in place and save — "Save" overwrites the original file directly, no switching to another app
・Formatting toolbar (headings, bold, italic, lists, code, tables, links) and a line-number gutter

■ Quick switching
A side drawer lists every PDF/MD in the current folder — tap one to switch, no need to go back to the list first.

■ Three themes, three languages
Dark, light, and warm themes switch instantly, or follow your system's dark mode setting; the interface is available in 繁體中文, English, and 日本語 at any time.

■ Fully offline
Every file is read, rendered, and edited entirely on your device. There is no server and no account, and nothing is ever uploaded. The only network activity is the bottom Google AdMob banner (no interstitial ads) — see the privacy policy for details.

You can also open a single file directly from another app's "Open with" or share menu (email, a download notification, …) without authorizing a whole folder.

## Is Pico PDF Viewer safe?

Not enough ratings yet to assess Pico PDF Viewer.

## Is Pico PDF Viewer legit?

Pico PDF Viewer has limited verification signals. The AppsHunter Legitimacy Score for Pico PDF Viewer is 50 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 0.2.0 — 2026-09-09

・New "Follow system" theme that tracks your system dark mode setting
・A four-step intro on first launch (skippable)

### 0.1.0 — 2026-09-02

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-09.*