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QSenda
Send files offline through QR codes — no internet needed
QSenda is an offline optical file transfer app that sends files through animated QR codes. No internet, account, Bluetooth pairing, or shared network is required. Choose a file, display the QR stream, and scan it with another device. QSenda reassembles the file and verifies its integrity with SHA-256. Built in part from Decimen Optical Transfer v0.3.0 under the MIT License.
Hi Product Hunt 👋
I built QSenda to explore a different way of transferring files between devices: using the screen and camera instead of a network connection.
QSenda converts a file into an animated QR stream. The receiving device scans the stream, reconstructs the file, and verifies it with SHA-256 before completion.
There’s no account, cloud upload, Bluetooth pairing, or shared Wi-Fi network required. Select a file, show the QR stream, and scan it from another device.
QSenda currently supports Android receiving, with sending also designed to work from larger screens such as desktops.
The optical transfer technology is built in part from Decimen Optical Transfer v0.3.0 under the MIT License, with further development and optimization for QSenda.
I’d especially appreciate feedback on:
• transfer speed and reliability
• different Android devices and cameras
• the overall send/receive experience
• situations where an offline optical transfer method would be useful
Thanks for checking out QSenda.
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About QSenda on Product Hunt
“Send files offline through QR codes — no internet needed”
QSenda was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #142 on the daily leaderboard. QSenda is an offline optical file transfer app that sends files through animated QR codes. No internet, account, Bluetooth pairing, or shared network is required. Choose a file, display the QR stream, and scan it with another device. QSenda reassembles the file and verifies its integrity with SHA-256. Built in part from Decimen Optical Transfer v0.3.0 under the MIT License.
QSenda was featured in Web App (123.6k followers), Tech (631.4k followers) and Data (2.4k followers) on Product Hunt. Together, these topics include over 206.9k products, making this a competitive space to launch in.
Who hunted QSenda?
QSenda was hunted by Qroda. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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