SideBooks - PDF&Comic viewer

3.48K reviews
Content rating
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About this app

SideBooks is a high performance, high speed PDF&Comic viewer that allows you to enjoy reading with the feel of actual paper.


Curl animation that simulates the actual turning of paper pages has been added to the standard page slide function.
Supports viewing from 2 directions, documents that open left to right and right to left. It provides the optimal environment for viewing any book.
All zoom rates have been optimized providing high speed, dynamic screen display.
An infinite hierarchy of folders can be created, moved, deleted, renamed, etc. using the enhanced bookshelf management function.
Real visual bookshelf function.
Files can be imported by 3 methods, Network transfer through Dropbox, USB transfer through PC and direct transfer from other applications.
Books can be protected so others cannot view them by using the password protected locking function.


*Brightness Adjustment.
*Screen rotates to match the orientation of the device
*Screen Rotation Lock
*Password Protected Start-up Lock

*Support PDF,ZIP,CBZ,RAR and CBR format
*Page Turning: Choose from slide or curl
*Viewing Directions: Choose from opening left to right / right to left
*Page Spacing: Choose form wide / narrow / none
*Facing Pages: Choose the pair of facing pages by setting the cover to on or off
*Trim function within the range of page display
*Cache pre-read function for the previous and next pages
*Set the display for each book and remember the page number of the last page read
*Text search function (list display type)
*Contents function (page images, PDF bookmarks)
*Bookmark function (with editable memos)
*In-page link function
*Link to outside URL function
*Page turning function using tap or swipe
*Expansion / Contraction function using pinch and double tap
*Viewing of encrypted PDF files with password protection
*Display / non-display of statusbar when reading

*Display form: Choose form list bookshelf / visual bookshelf
*Cover editing function (corresponds to the trim)
*File editing function: create, move, delete
*Bookmark list
*Network transfer through Dropbox
*USB transfer through PC
*Direct transfer from other applications

Special thanks to,
"Give My Regards to Black Jack"
Manga on Web
Updated on
Jul 19, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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Ratings and reviews

2.59K reviews
August 12, 2022
I really love this app I thank you so much for making it! I have but one inquiry for some reason recently whenever I try to add a zip file manga it shows up as a damaged file. In the past I had no trouble creating zip files and then viewing them here so maybe something with the update? Otherwise I really love the app 🥰. Also is there any way you can add a feature to edit and draw on files? Like highlight and underline and stuff maybe 😁
11 people found this review helpful
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john argue
May 11, 2020
The more I use ,the more I like. I found a easier way to add pdf to sidebook is after downloading a PDF,click open, then choose sidebook app. Then it's automatically added. Otherwise need to manually add each pdf using a file manager app. Place pdf in correct location for sidebook to recognize.Otherwise, I like the page effects, also can trim pages to fit better, draw or underline words, bookmark a page,switch magazine quick.etc. great app 👍
13 people found this review helpful
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August 8, 2023
I've been using this app for about 2 years and to call it a good pdf reader would be an understatement. But there are two main issues I have: on my Samsung A71, android 13, I keep getting crashes whenever I open a second pdf. I'd also like forced dark mode to be potentially implemented
20 people found this review helpful
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What's new

*Added "Text display" to the submenu of the action button. PDF page text can now be displayed in a text box.