Optical File Transfer

Copy small files to your phone through camera - as a stream of QR images.

Paweł Wróbel · pl.pwrobel.opticalfiletransfer

Not rated yet 5K+ downloads v0.0.23 9.7 MB Android 5.0+ PEGI 3 · Everyone

Download APK 9.7 MB All versions

Same certificate as the 2 other versions checked Details

Watch the Optical File Transfer trailer on YouTube

At a glance

Latest version: v0.0.23 (23)
Updated: May 14, 2026 (5 months ago)
APK size: 9.7 MB
Requires: Android 5.0+ (API 21)
CPU support: x86 64-bit, ARM 32-bit, ARM 64-bit
Graphics: OpenGL ES 2.0+
Category: Tools (app)
Listed since: Dec 24, 2022 (at least)
Permissions: 3 (2 sensitive)
Website: wrobel.wroclaw.pl/opticalfiletransfer/en/win/index.php
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Optical File Transfer is an app by Paweł Wróbel in the Tools category, listed since at least December 2022. It includes native code for x86 64-bit, ARM 32-bit and ARM 64-bit, so it runs on practically every phone.

Since version 0.0.15, the minimum Android version rose from 4.2 to 5.0. It asks for 3 permissions, 2 of them sensitive: camera and access all files. It asks for the same permissions as version 0.0.20.

What's new in v0.0.23

Hardens Android file-access fallbacks

Description

From the listing uploaded by “catappult”.

Send small files to your phone through the camera as a stream of QR images. Features: • No WiFi, Bluetooth, NFC, USB cable or internet connection required for transfer • Wireless and offline at the same time • Minimal setup: in download mode, just point the camera at the QR stream and wait • Can send files shared from other apps, such as file managers • Can broadcast a file full-screen in a loop, for example from a TV or monitor Notes: • To receive a file from a desktop PC, use the web uploader: https://wrobel1989.bitbucket.io/ It runs fully in the browser and is compatible with this app. • Larger files can take a long time to transfer. This app is not intended to replace USB, WiFi, Bluetooth, NFC or other standard transfer methods. • Transfer reliability depends on camera quality, phone performance, screen brightness, focus and selected transfer settings. • If transfer is unreliable on default settings, try lowering FPS or allowing more errors. • Transfer settings affect only the QR stream producer in upload mode. Download mode adapts to the stream it sees. • Free version supports files up to 15 MB in size.

Version history

5 versions are listed, going back to v0.0.15. Since v0.0.17 it requires Android 5.0+.

v0.0.23 LATEST May 14, 2026 9.7 MB TRUSTED v0.0.20 May 14, 2026 9 MB TRUSTED v0.0.18 May 14, 2026 9 MB TRUSTED v0.0.17 May 14, 2026 9 MB TRUSTED v0.0.15 Jun 7, 2024 5.2 MB TRUSTED

All 5 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “Home” Not the developer's name (“Paweł Wróbel”). Names in certificates can't be verified, so this alone proves nothing.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified May 14, 2026
Signed byCN=Pawel Wrobel, OU=Home, O=Home, L=Wroclaw, ST=Dolnoslaskie, C=PL
Signing certificate (SHA-1)B5:15:55:69:7E:79:D6:C3:95:28:8E:F3:FE:A6:AC:F4:68:C1:AA:BA
File MD5416bb572ef6e3dc51e4e8a87ac76bc89
Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (3)

Optical File Transfer requests 3 permissions, 2 of them sensitive.

Access all files Sensitive android.permission.MANAGE_EXTERNAL_STORAGE
Camera Sensitive android.permission.CAMERA
Internal broadcast protection (app-defined) pl.pwrobel.opticalfiletransfer.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

Required hardware & features

Camera android.hardware.camera
Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait

Optical File Transfer APK: questions and answers

Is there a version of Optical File Transfer for older Android phones?

The current version needs Android 5.0 or later. Version 0.0.15 is the newest listed build that installs on Android 4.2 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 0.0.15 · All versions

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Optical File Transfer APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 416bb572ef6e3dc51e4e8a87ac76bc89.