User guide

Getting started

UniReader reads your books where they already are. Show it the folder that holds them, and a minute later your whole library is on screen, with covers.

The first launch

Two short screens greet you. The first says what UniReader reads; click Next. The second asks Where are your books? Click Choose a folder… and pick the folder that holds them — on your Mac, an external drive or iCloud Drive. UniReader looks through it and its subfolders. Nothing is moved or copied. Prefer to look around first? Click Later.

Adding books

• A folder. In the empty library, click Choose a folder…. Later, use the Library Sources menu → Import folder. The folder is read in place and becomes a source of your library.
• Single files. In the empty library, click Open files…. From the Finder, you can also use Open With → UniReader, or drop a book on UniReader’s icon in the Dock. The file opens in a tab and is kept under Inbox (opened files) in the sidebar.
• Files into a folder of your library. Select the folder in the sidebar, then click Add Documents… in the toolbar, or drag files from the Finder onto the library. They are copied into that folder.

Finding your way around

• The title bar holds your tabs. The first one, All documents, always brings you back to the library; each book you open gets its own tab next to it.
• The sidebar on the left lists your shelves (Reading, Finished, Recent), your collections and the folders of your library. Show or hide it with ⌥⌘S.
• The library in the middle shows your books as covers or as a table. The toolbar above it holds Search, sorting, the display switch and Filters.
• The reader takes the whole window when a book’s tab is active, with its own toolbar for search, pages, bookmarks and highlights.

Continue reading

When no book is open, the library shows a Continue reading card with the last book you were reading and how far you got. Click Continue and you are back on the page where you stopped. Books you have marked as finished never appear there.

Your library

The library is a catalog of the folders you showed UniReader. Your files stay where they are: shelves, collections and corrected titles live in UniReader, and the Finder keeps your folders as they were.

Folders

Each folder you added is a source. Under Folders in the sidebar, you find it with its subfolders, exactly as on disk; click one to see what it holds. Drag a book onto another folder to move it there, or a folder onto another to move it with everything inside. To add a source, use Library Sources → Import folder, or Settings → Sources → Add Source…. When you have added books in the Finder, Library Sources → Reload brings the library up to date, and Rescan Selection does it for the folder you are in.

Reading shelves

Under Document status, three shelves fill themselves: Reading, Finished and Recent. Next to them, Inbox (opened files) keeps the files you opened from outside your library.

Collections

1. Click + next to Custom collections in the sidebar, give the collection a name and, if you like, a color.
2. Drag books onto the collection — or right-click a book and choose Collection, then the collection you want.
3. Right-click a collection to rename it, give it a subcollection or delete it. Deleting a collection leaves its books in the library.

Smart collections

A smart collection fills itself from rules and stays up to date as your library changes. Click + next to Smart collections, name it, then choose a Rule type — for example Title contains, Author contains, Document type is, Opened within last days or Finished reading is — and its value. Add rule and Add group let you combine rules with AND or OR, such as a title containing “Manual” AND (PDF OR DjVu). Right-click the collection and choose Edit rules… to change it later.

Search, sort and filter

• Search. Click Search in the toolbar, or press ⌘F in the library, and type part of a title, an author, a publisher, a year or a file name. Tick Search in document content to look inside PDFs and text documents as well.
• Sort. The sort menu offers Title, Author, Year, File name, Type, Size, Last modified and Last opened, with Descending to reverse the order. In the table, click a column header.
• Filter. The Filters menu shows only some Types (comics, e-books, PDF, DjVu, other), and Include subfolders shows the books of every subfolder at once.
• Display. The switch next to the sort menu shows your books as covers or as a table.

Covers

UniReader makes a cover for every book from the file itself. For a PDF or a DjVu, right-click the book and choose Set cover from page… to use another page, or Set cover from image… to use a picture of your own.

Correcting the details

File names are often a poor guide. Right-click a book and choose Edit metadata to set its title, authors, year, publisher, ISBN, language and summary; as you type, UniReader suggests names already in your library, so one author is spelled the same way everywhere. Swap title and authors fixes a book where the two were inverted. Select several books to change their authors, year or publisher at once. About this document shows the file, its size, its pages and its notes.

Finding a book’s details online

In Edit metadata, click Search online: UniReader looks the book up in Open Library and Crossref, with no account and no key. Each proposal shows its cover, so you can tell two editions apart, and how closely it matches. Nothing is written until you pick one, and nothing is saved until you click Save.

Identifying many books at once

1. Select the books, then click Identify selection online… in the toolbar — or right-click a folder and choose Identify documents online….
2. UniReader looks each one up and lists its best proposal. Use Not identified to see only the books that still need one.
3. Check the proposals you agree with, then click Apply to N documents. Take covers for all brings their covers along.

Articles and references

A folder of scientific papers reads better as a list of references. Right-click it in the sidebar and choose This folder contains articles: its covers give way to a table with authors, title, journal, volume, year, and the DOI and arXiv links you can click. Its subfolders follow. In About this document, the Reference line offers Copy reference and Copy as BibTeX, ready to paste into a paper.

When a folder can’t be reached

A source on an external drive that is unplugged shows as Offline in Settings → Sources. Plug the drive back in; if macOS still refuses access, Library Sources → Reauthorize Sources… asks for it once more.

Removing or deleting

• Remove from library takes the book off your shelves and leaves the file on disk. Later scans won’t list it again; Library Sources → Removed Documents… shows what you removed and Put Back in Library brings it back.
• Delete file from disk sends the file itself to the Trash.
• With several books selected, UniReader asks which you mean: Remove from library only or Delete files from disk. Either way, ⌘Z undoes it.

Opening documents

A book opens in a tab, like a page in a browser. Keep a manual next to a novel, a paper next to its references, and move from one to the other without losing your place.

From the library

Double-click a cover or a row of the table, or right-click it and choose Open. The book opens in a new tab, at the page where you stopped. If it is already open, UniReader simply brings its tab forward.

From outside UniReader

In the Finder, choose Open With → UniReader on a book, or drop it on UniReader’s icon in the Dock. It opens in a tab, and if it is not part of your library it is kept under Inbox (opened files), so you can find it again. Drop a whole folder on the icon and it becomes a source of your library.

Tabs

• Tabs sit in the title bar. The first one, All documents, is the library and is always there.
• ⌃Tab goes to the next tab and ⌃⇧Tab to the previous one; ⌘W closes the current tab.
• Drag a tab to put it elsewhere in the row. Rest the pointer on a tab to see which document it holds.
• With many tabs open, the chevron at the end of the row (Open tabs) lists them all, with Search tabs to find one by its title.

Tab groups

1. Right-click a tab and choose New tab group. Give the group a name and a color.
2. To add other tabs, right-click each one and choose Move to group, or drag it into the group. Remove from group takes a tab out.
3. Click the group to fold or unfold its tabs, so a dozen open books take the room of one.
4. Ungroup tabs, in the group’s menu, dissolves the group and leaves every book open.

Documents with a password

1. Open the document as usual. For a locked PDF, an encrypted EPUB or a protected CBZ or CBR comic, UniReader asks for its password.
2. Type the password and click Unlock. It stays known until you quit UniReader.
3. Tick Remember in my keychain if you want it to open without asking from now on. The password is then kept in your Mac’s keychain.

Which formats open

• Books: EPUB, MOBI, AZW, AZW3, PRC, FB2 and LIT.
• Documents: PDF, DOC, DOCX, RTF, TXT and Markdown.
• Scans and references: DjVu and CHM.
• Comics and manga: CBZ and CBR.

Previewing without opening

In the Finder, select a file and press the Space bar: Quick Look shows PDF, DjVu, comics and Markdown pages without opening UniReader, and the Finder shows the first page as the file’s icon. If another app also previews Markdown, choose which one does it in System Settings → General → Login Items & Extensions → Quick Look.

Reading and moving around

UniReader adapts to each kind of document while keeping the same gestures. This chapter shows how to turn pages, choose a layout, jump through a book and find a passage.

Two kinds of documents

Fixed pages: PDF, DjVu and comics (CBZ, CBR) keep the layout of the printed page. You choose how the page fits the window. Reflowable text: EPUB, MOBI, AZW3, FB2, CHM, LIT, Word, RTF and TXT flow into pages built for your window. You choose the text size, the spacing and the theme.

Turning pages

Press ← and → to turn the page, in every format. In PDF, DjVu and comics, ↑ and ↓ scroll within the page, then move on to the next one. PDF and DjVu also have a page slider at the bottom of the window; reflowable documents have Previous page and Next page buttons there.

One page, two pages or scrolling

For PDF, DjVu and comics, the Display menu offers Single page, Single page, vertical scrolling, Double page and Double page, vertical scrolling, plus First page alone so that a book’s cover stands on its own. The same choices appear when you right-click the page. In reflowable documents, the page button in the reader’s toolbar switches between Single page and Double page.

Fit and zoom

For PDF, DjVu and comics, choose Fit page, Fit width or Fit height from the Display menu or by right-clicking the page. In reflowable documents, ⌘+ and ⌘− make the text larger or smaller.

Your usual layout

UniReader → Settings → General, section Reading, holds the layout documents open with: Display, First page alone in double-page mode, Fit mode, and, for EPUB books read on two pages, Start each chapter on a left-hand page. Smooth DjVu rendering (anti-aliasing) softens scanned pages; turn it off for crisp edges.

The table of contents

When a document is open, the sidebar shows its Outline: click a chapter to go there. Next to it, Pages shows thumbnails of PDF, DjVu and comic pages. Show or hide the sidebar with ⌥⌘S. In a PDF or DjVu without an outline, the + button (Add current page) builds one, page by page.

Going to a page

In PDF, DjVu and comics, type a number in the Go to page field of the toolbar and press Return.

Back and Forward

The arrow buttons in the toolbar retrace the pages you have visited, as in a web browser: Back to previous page visited and Forward to next page visited. Handy after following a link or jumping to a chapter.

Finding a word

Choose Edit → Find in Document… (⌘F), type a word and press Return; ⌘G goes to the next match. Search works in PDF and in EPUB, MOBI, FB2, LIT, Word, RTF and TXT documents.

Full screen

Toggle Full Screen (⌃⌘F) gives the page the whole screen. In UniReader → Settings → General, Hide sidebar and tab bar while reading (full screen only) clears everything else away; move the pointer to the top edge to bring it back.

Back where you stopped

UniReader remembers your position in every document as you read. Open it again, tomorrow or in a month, and you are on the same page.

Markdown documents

A Markdown file (.md) opens as a laid-out page, in your reading theme: headings, tables, task lists, colored code, footnotes and formulas ($…$ and $$…$$). The table of contents is made from its headings, and images next to the file appear in the page.

Creating a Markdown document

1. Right-click a folder in the sidebar and choose New Markdown Document — or choose File → New Markdown Document (⌥⌘N) for the folder open in the library.
2. Give it a name and click Create. The file is created in that folder, with its title as a heading, and opens straight in the editor.

Editing a Markdown document

1. In the reader, choose Edit text. The page gives way to the editor: the source on the left, with its syntax in color, and the live preview on the right, which follows as you type and scroll.
2. The bar above the source inserts Bold, Italic, Heading (one more # with each click), Link, List, Code, Table and Formula.
3. Your changes are saved by themselves a moment after you stop typing, and with ⌘S. Choose Stop editing to return to the reading page, rendered again.

Bookmarks, highlights and notes

Mark the places you want to find again, color the passages that matter and write your own notes beside them — in plain text or in Markdown, with equations if you need them.

Bookmarks

Click the bookmark button in the reader toolbar to mark the page you are on; it fills in when the page already has one. You can also Control-click the page and choose Add bookmark. The Bookmarks tab of the reader sidebar lists them: click one to go back to its page, Control-click it to rename or delete it.

Highlight a passage

1. Choose the color first: click the round swatch in the reader toolbar and pick one of the eight colors — yellow, green, pink, blue, orange, purple, cyan or gray.
2. Select the text on the page.
3. Click the highlighter button next to the swatch. The passage takes the color, and the selection clears so you can mark the next one.

Your highlights

The Highlights tab of the reader sidebar lists every highlighted passage with its color and its page. Click one to go back to it. Control-click it to change its color (Color) or to delete it.

Write a note

1. Control-click the page and choose New note, or open the Annotations tab of the sidebar and click +.
2. Give the note a title.
3. Under Format, choose TXT for plain text or MD for Markdown.
4. Write, then click Save. The note is attached to the place you were reading.

Markdown and equations

In MD notes you can use headings, bold and italics, lists, links, quotes, tables and code. Equations are written in LaTeX: $…$ inside a sentence, $$…$$ for an equation on its own line. The Markdown preview (equations supported) below the editor shows the result as you type; drag the divider between them to give one or the other more room.

Your notes

The Annotations tab lists your notes; Markdown notes carry a small MD badge. Click a note to go back to its place and edit it. Control-click it for Edit, Export as PDF or Delete. If your library is linked to an iPhone or iPad, the handwritten notes made there appear in this list too, as small pictures.

All your annotations in one place

In the library sidebar, Annotations gathers the highlights and notes of every document, grouped by document. Search them with Search annotations, and choose Open at this annotation to go straight to the page.

Export

• Annotations → Export Annotations (Active Document) (⇧⌘E) makes a PDF of the document’s annotations, in page order. The save window lets you choose the page size, the layout (Compact or One per page) and the text size.
• Annotations → Export Annotations as Markdown… (⌥⇧⌘E) writes a .md file. Under Include, keep everything or only highlights, notes or bookmarks; under Layout, choose one file grouped by type, one file in document order, or three separate files.
• Export all as PDF, at the bottom of the Highlights and Annotations lists, does the same from the sidebar.

Listen

UniReader can read the text aloud with the voices of your Mac. And when a book comes with its own recordings — a language course, an audiobook — you can play them next to the page.

Read aloud

1. Open the document at the place you want to hear.
2. Choose Speech → Play / Pause (⌃⌘S). You can also Control-click the page and choose Read aloud.
3. The same command pauses and resumes. Speech → Stop Speaking (⌘.) stops.

What is read

In a PDF or a DjVu book, UniReader reads the page you are on. In an EPUB, a MOBI, an FB2, a CHM or a Word document, it reads the text of the document. A DjVu needs a text layer to be read; comics have no text to read.

Language, voice and speed

The Speech menu has Speak Faster (⌥⌘→) and Speak Slower (⌥⌘←), and two submenus, Language and Voice, to choose among the voices installed on your Mac. The same settings are in UniReader → Settings → General, under Speech settings: Language, Voice and Speed.

Listen while you read

A document can have its own recordings: the drills of a language course, the chapters of an audiobook. You attach the folder that holds them once, and the Recordings tab of the reader sidebar lists its tracks. Nothing is copied or moved — the folder stays where it is.

Attach a folder of recordings

1. Open the document and choose the Recordings tab in the reader sidebar.
2. Click Attach an Audio Folder… and choose the folder. Subfolders are included.
3. Each audio file becomes a track, with its title and its path below it. An audiobook made of one long .m4b file is split by its chapters: each chapter is a track of its own.

Play the tracks

Click a track to play it. The bar at the top of the panel shows its title, the time and a slider, with Back 10 seconds, play and pause, Stop, and the Playback speed (0.75× to 1.5×). Every track remembers where you stopped, even after you quit. Opening another document stops the playback.

Audiobook or language course

In the ⋯ menu of the panel, Play the next track automatically suits an audiobook: the next chapter starts on its own. Leave it off for a language course, so that each drill ends in silence and you can play it again. The same menu has Restore Titles from Files and Detach Folder.

Track titles

Titles come from the recordings' own information, or from the file name when there is none. Control-click a track and choose Rename Track… to change its title, or use Replace in Titles… at the top of the panel to change a word in every title at once. These titles are kept in UniReader: the files on disk keep their own tags.

Formats

UniReader plays MP3, M4A, M4B, AAC, WAV, AIFF, CAF, FLAC, ALAC and MP4 audio. Copy-protected audiobooks (.aa, .aax) are counted below the list rather than played.

Ask AI about the page

Stuck on a passage? Ask a question about the page you are reading: a summary, an explanation, a translation. UniReader supplies the conversation and the page; you bring your own AI account.

Open the assistant

With a document open, click the sparkles button at the right of the window bar (Ask AI…) or press ⇧⌘I. The Ask about this page panel opens beside the page. In UniReader → Settings → AI, under Panel, the Presentation setting chooses a Side panel or a Floating window.

Connect your account

1. The first time, the panel asks you to connect. Click Continue with OpenRouter and sign in: OpenRouter creates a key for UniReader and the window comes back by itself.
2. For another provider, pick it in the menu above — OpenAI, Anthropic, DeepSeek, Mistral, Groq, xAI (Grok), Perplexity… — paste the API key you created on its website and click Use this key.
3. For a model running on your Mac with Ollama, choose Ollama (local) and click Use Ollama without a key.
4. Everything is also in UniReader → Settings → AI. Under Advanced you set the Provider, the Base URL, the Model name and the API key, with Save key, Clear key and Verify connection.

Choose the model

Next to the provider, a menu lists the models it offers; the list comes from the provider and is refreshed once a day, or with Refresh model list in Settings. A key alone is not enough: the model answers, and your account with that provider pays for the replies.

Ask a question

Type your question in Ask a question about this page… and press Return. When the conversation is empty, Try asking offers ready-made questions: Summarize, Explain this page, Define the terms and Translate. Each question is marked with the page it was asked on; Stop interrupts an answer that is being written.

What goes with the question

Click the sliders button next to the model (Show what is sent with the question). Under Context, choose Text, Image or Both: the text of the page, a picture of it — useful for formulas, tables or a scanned page — or the two together. Tick Show what will be sent to read the excerpt and see its size: characters, an estimate of tokens and the weight of the image. In a PDF or a DjVu, the text is that of the page you are on; in an EPUB or a text file, it is the text of the document.

Ask about a selected passage

Select a passage on the page before asking. A Selection chip appears above the question box, with a switch: on, the question is about that passage, and the page goes along as context. Explain the selection is then offered among the ready-made questions. Turn the switch off to ask about the whole page again.

Keep an answer

Under each answer: Copy, Save as note and Ask again. A saved answer becomes a Markdown note of the document, titled with your question, in the Annotations tab. The bin button at the top (Clear conversation) starts afresh. If an answer stops too early, the panel offers to raise the limit and ask again; the Answer length and Extended thinking (off at first) are under Settings → AI → Answers.

Your usual chat site

The Web mode, at the top of the panel, opens ChatGPT, Claude, Gemini, Perplexity, Copilot, OpenRouter Chat or DeepSeek inside the panel (Service). You sign in there once and the session is kept. In this mode the page you are reading is not sent: paste what you want to ask about. Open in Safari takes the conversation to your browser.

Privacy: what is sent, when, to whom

• Nothing from the document leaves your Mac until you send a question or click a ready-made one. To fill the model menu, the app asks the provider for its list of models, with your key and nothing from the document.
• With each question go the title, author, publisher, year and format of the document, the page number, the text or image you chose, the selected passage if there is one, and the earlier exchanges of the conversation. Clear conversation empties it.
• With a direct key, everything goes straight to the provider you chose. Through OpenRouter, the pages you send transit through OpenRouter, which can see their content.
• With Ollama, the questions go to the model on your Mac and stay there.
• Your keys are stored in the macOS Keychain, on this Mac only. UniReader never receives your key, your questions or your pages.

Using several devices

UniReader on your Mac, iPhone and iPad can share one library. Books are copied over your Wi‑Fi; reading progress, highlights and notes follow through iCloud. And any computer with a web browser can send books to your iPhone or iPad.

Two ways things travel

Books themselves are copied over your local Wi‑Fi network, between your Mac and your iPhone or iPad, when you ask for it. Everything you do with them — where you stopped, bookmarks, highlights, notes — travels through iCloud, in the background, under your own Apple Account, wherever the devices are. On the Mac, the iPhone’s or iPad’s library appears as a library of its own, kept in a folder on the Mac and listed in the sidebar under Mobile companion devices.

Before you start

• UniReader on the Mac and on the iPhone or iPad, with Premium on both — the 10-day trial counts.
• Both devices on the same Wi‑Fi network, and not a guest network that keeps devices apart.
• When macOS or iOS asks whether UniReader may find devices on your local network, allow it.
• For notes and progress: both devices signed in to iCloud with the same Apple Account.

Link an iPhone or iPad to your Mac

1. On the iPhone or iPad, open Settings (the gear in the library). Under Sync with Mac, tap Connect to Mac…. UniReader copies this device’s pairing ID and starts looking for the Mac.
2. On the Mac, choose UniReader → Settings, open the Sources tab and, under Sync with iPhone or iPad, click Connect to iPhone or iPad…. The Mac reads the pairing ID from the clipboard your Apple devices share.
3. The first time, the Mac asks where to keep this device’s library: choose a folder. The library then appears in the sidebar under Mobile companion devices.
4. When both sides are ready, the buttons become Sync books… on the iPhone or iPad and Sync with iPhone/iPad… on the Mac. Either one starts the copy.

Copying books

A sync works in both directions: books added on the iPhone or iPad come to their library on the Mac, and books you put in that library on the Mac go to the device. When the Mac has books waiting, the iPhone or iPad offers Transfer now or Later. A copy in progress can be stopped with Stop transfer. Under Advanced options, the sync mode is Merge libraries by default; Mirror (remove local-only titles) makes one side match the other exactly.

Notes and progress through iCloud

Turn on Keep notes & reading progress in iCloud on both sides: on the Mac, in the Sources tab, under the linked library in Mobile companion libraries; on the iPhone or iPad, in Settings, under Sync with Mac. From then on, highlights, notes, bookmarks and reading positions update in the background, even when the devices are far apart. To send your latest changes at once, tap Force iCloud sync now on the iPhone or iPad; on the Mac, it is the cloud button in the library’s sync bar.

Reading the status lights

Two colored dots show where things stand: one for the library, one for the link with the other device. Green means everything is up to date or the devices are linked; orange means a step is still pending, or the Mac is waiting for the iPhone or iPad; gray means iCloud sync is off or the devices are not connected. On the Mac, rest the pointer on a dot to read what it means.

When both sides changed

If the same item was changed on both devices, UniReader does not choose for you. Sync conflicts shows it, and you pick Keep Mac version, Keep iPhone or iPad version or Merge.

Paired devices

On the Mac, Manage paired devices…, under a linked library in the Sources tab, lists the devices that have synced with it; Forget removes one. On the iPhone or iPad, Forget link is under Advanced options.

Send books to an iPhone or iPad from a computer

Any computer on the same Wi‑Fi can do it — a Mac, a Windows PC or another — with nothing to install but a web browser.

1. In the library on the iPhone or iPad, tap Import, then Import via Wi-Fi.
2. Tap Start server. UniReader shows an address to open in a browser on your computer.
3. Type that address into the browser on the computer. Drag your files onto the page, or click to choose them, then click Import.
4. The books appear in the library. Keep the screen open while files arrive, and tap Done when you have finished: the server stops when you leave it.

Themes and appearance

Give the page the color and the type that suit your eyes, by day and by night. Themes, text size and spacing apply to the reflowable formats; PDF, DjVu and comics keep the look of the printed page.

Reading themes

Six themes are available: Automatic, Light, Sepia, Night, Paper light and Paper dark. Automatic follows the light or dark appearance of macOS. Choose one with the Aa button of the reader’s toolbar. In EPUB, MOBI, FB2, CHM and LIT books, a right-click on the page also offers Text layout → Theme.

Text size, spacing and margins

The Aa button opens the text settings. Compact, Default and Comfort set everything at once; the Text size, Line spacing and Margins sliders fine-tune it. ⌘+ and ⌘− also change the text size. If an old MOBI book shows garbled letters, choose another Text encoding in the same panel.

For one book or for all

A book can keep its own settings. In the Aa panel, Apply display style extends them with Apply to same format or Apply to same source, and Reset to global defaults brings the book back in line. The defaults themselves live in UniReader → Settings → General, under Text formats (EPUB/CHM/FB2/LIT/MOBI).

Light or dark app

UniReader follows the light or dark appearance of macOS, set in System Settings.

Pictures on dark pages

With a dark theme, pictures in a book keep a light background, so that drawings and diagrams with transparent parts stay readable.

Printing and exporting

Put a document on paper, alone or with your notes beside it.

Printing a document

Open the document and choose File → Print… (⌘P). PDF prints as it is; DjVu and comics print page by page, one page per sheet. EPUB and the other text formats print the text as the reader lays it out. The usual macOS print panel lets you choose the printer, the pages and the number of copies.

Printing your annotations

The File menu holds three more ways to print. Print Annotations… prints your highlights and notes on their own. For PDF, DjVu and comics, Print Annotated Pages with Notes… prints only the pages you annotated, each facing its notes, and Print Full Document with Notes… does the same for the whole document.

Exporting your notes

The Annotations menu exports what you wrote: Export Annotations (Active Document) (⇧⌘E) and Export Annotations as Markdown… (⌥⇧⌘E). More in the chapter on notes.

Free and Premium

PDF, EPUB and TXT are free to read for as long as you like, and so are the first 7 pages of FB2 books. Premium opens every other format and the tools around them — and you can try all of it free for 10 days.

What is free

Without Premium, UniReader for Mac reads DRM-free PDF, EPUB and TXT files from one library source, for as long as you like and without an account. FB2 books open as a free preview: their first 7 pages can be read without Premium.

What Premium adds

• Every other format: DjVu, CHM, MOBI, AZW, AZW3, PRC, LIT, CBZ and CBR comics, Markdown, RTF, DOC and DOCX — and FB2 books beyond their first 7 pages.
• Several library sources: all your folders in a single library.
• Bookmarks, annotations, printing, metadata editing and file tools.
• Sync with UniReader on your iPhone and iPad.

The 10-day trial

For 10 days, every Premium feature is open. The trial costs nothing, asks for no payment details, and nothing is charged when it ends. There is one trial per device. When you are signed in to iCloud, the same trial covers your Mac, iPhone and iPad: started on one, it runs — and ends — on all of them. Reinstalling the app does not start a new one.

Starting the trial

You can also start it without opening a document: in UniReader → Settings → Subscriptions, click Start 10-day free trial.

1. Open a document in a format that is part of Premium, such as a comic or a DjVu book. A window tells you which format it is and offers the trial.
2. Choose Start the free trial and open: the trial starts and the document opens straight away.
3. See plans shows the offers instead, and Later closes the window.

While it runs, and when it ends

• UniReader → Settings → Subscriptions shows the days left and the date and time the trial ends.
• When the trial starts, UniReader asks whether it may send you notifications. If you allow them, a reminder arrives the day before the end: “Your Premium trial ends tomorrow”.
• When the trial ends, PDF, EPUB and TXT stay free, as do the first 7 pages of FB2 books, and nothing in your library is deleted. The other formats ask for Premium again.

Buying Premium

In UniReader → Settings → Subscriptions, the offers are listed with the price for your country: by month, by year, or once for life. Click Subscribe next to a monthly or yearly subscription, or Buy next to the one-time purchase, then confirm with the App Store. See plans, in the window that offers the trial, shows the same offers.

Restoring a purchase

On a new Mac, or after reinstalling, make sure you are signed in with the Apple Account you bought with, then click Restore Purchases in UniReader → Settings → Subscriptions.

Changing or canceling a subscription

Manage Subscriptions, in UniReader → Settings → Subscriptions, opens your App Store subscriptions, where you can change or cancel. A subscription renews automatically unless it is canceled at least 24 hours before the end of the current period.

Help and troubleshooting

Where to find help inside UniReader, what to do when a file won’t open or goes missing, and how to reach us when something is still wrong.

The help inside the app

Choose Help → UniReader Help, or press ⌘⇧/. The help window lists its topics — the library, reading, annotations, sync with iPhone and iPad, Free and Premium, troubleshooting — and its search field finds a word in all of them.

A file that won’t open

When a document cannot be read, UniReader tells you in the reader instead of closing — for example that a PDF is damaged or isn’t a PDF at all.

• Try another file of the same format. If it opens, the first file is at fault; if it doesn’t, the reader is, and we want to know.
• UniReader reads DRM-free files. A book protected by DRM, such as one bought in the Kindle store, opens in the app of the shop that sold it.
• If the file opens in another app, send it to us: it helps us improve the reader.
• Formats that are not free ask for Premium once the trial is over: see Free and Premium.

Files missing after you moved them

UniReader reads your files where they are, without copying them. Move and rename them from within UniReader — with Move to folder, Rename File…, or by dragging a folder in the sidebar — and their notes and reading positions follow. If you moved files in the Finder, choose Library Sources → Reload so the library lists them where they are now.

• A source on an external drive shows Offline in UniReader → Settings → Sources until the drive is connected again.
• If macOS no longer lets UniReader into a folder, choose Library Sources → Reauthorize Sources… and select it again.
• Documents you removed from the library are still on disk: Library Sources → Removed Documents… puts them back.

When sync between Mac and iPhone or iPad stalls

• Both devices must be on the same Wi‑Fi, not a guest network, and UniReader must be allowed to use the local network in the system’s privacy settings.
• On the Mac, Reset connection, under Sync with iPhone or iPad in the Sources settings, starts the link again from scratch.
• If the Mac’s firewall is on, it must let UniReader accept incoming connections.
• For notes and progress, check that both devices are signed in to iCloud and that Keep notes & reading progress in iCloud is on for that library. Everything else is in Using several devices.

Premium not recognized

Make sure you are signed in with the Apple Account you bought with, then use Restore Purchases, as described in Free and Premium.

Contacting support

Write to support@pasahome.org, for a question, a bug, an idea or a purchase. A real person reads every message, usually within one or two working days. To help us fix things quickly, please include:

• the app version (UniReader → About UniReader) and your macOS version;
• the format of the file and, if you can, the file itself;
• what you did, what you expected, and what happened instead.