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SyncBy!App — Present wirelessly!
Present wirelessly with a 4-digit PIN. No cable, no app.
SyncBy!App turns any TV, monitor, or projector into a wireless screen for your PDF or photos. Open a browser on the screen, get a PIN, type it on your phone — no cables, no installs, no accounts. Files stay on your device; nothing is ever uploaded.
I built SyncBy!App after one too many conference-room standoffs — a projector that only speaks VGA, a laptop that doesn't, and an audience watching me dig through my bag for the right dongle.
The idea is simple: open a browser on any screen, get a 4-character PIN, type it into your phone, pick a PDF or some photos — you're presenting. No app to install, no account to create, no cable to hunt for. Slides travel peer-to-peer over WebRTC straight from your phone to the screen; nothing ever touches a server, nothing gets uploaded anywhere.
A few things I care about that you might too: - Works on locked-down conference Wi-Fi — it only needs ports 80/443, same as any website - Sessions are anonymous and disposable: no accounts, no tracking, no trace left behind - There's a self-hosted version for teams that want it fully on their own infrastructure
Would love your feedback — especially if you've ever been the person frantically searching "HDMI adapter near me" five minutes before a talk.
Would love to see screen mirroring for video playback too, not just PDFs and photos. Also, adding a way to resume a previous session by saving the PIN for a few minutes would save time when switching between files during a presentation.
Tried it on the office projector and the PIN setup was honestly painless, photos showed up right away with no app install on my end. Love that nothing leaves my phone.
finally a wireless display option that does not try to install a weird app on the TV, just typed the pin on my laptop and the photos showed up in seconds. keeping my files local is a really nice touch.
honestly the PIN setup is way simpler than i expected, just opened chrome on my tv and it was already showing photos within like a minute.
this looks super handy for quick presentations, love that nothing gets uploaded. one thing that would make it a no-brainer for me: let me stream a short video clip too, not just pdfs and photos. even 60 seconds would cover most product demos and sales pitches i do on the road.
About SyncBy!App — Present wirelessly! on Product Hunt
“Present wirelessly with a 4-digit PIN. No cable, no app.”
SyncBy!App — Present wirelessly! was submitted on Product Hunt and earned 8 upvotes and 6 comments, placing #159 on the daily leaderboard. SyncBy!App turns any TV, monitor, or projector into a wireless screen for your PDF or photos. Open a browser on the screen, get a PIN, type it on your phone — no cables, no installs, no accounts. Files stay on your device; nothing is ever uploaded.
SyncBy!App — Present wirelessly! was featured in Productivity (656.2k followers), Meetings (6.5k followers) and Remote Work (4.1k followers) on Product Hunt. Together, these topics include over 152.3k products, making this a competitive space to launch in.
Who hunted SyncBy!App — Present wirelessly!?
SyncBy!App — Present wirelessly! was hunted by Bartosz Kulczyk. 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.
Want to see how SyncBy!App — Present wirelessly! stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Bartosz Kulczyk
Hi Product Hunt!
I built SyncBy!App after one too many conference-room standoffs — a projector that only speaks VGA, a laptop that doesn't, and an audience watching me dig through my bag for the right dongle.
The idea is simple: open a browser on any screen, get a 4-character PIN, type it into your phone, pick a PDF or some photos — you're presenting. No app to install, no account to create, no cable to hunt for. Slides travel peer-to-peer over WebRTC straight from your phone to the screen; nothing ever touches a server, nothing gets uploaded anywhere.
A few things I care about that you might too:
- Works on locked-down conference Wi-Fi — it only needs ports 80/443, same as any website
- Sessions are anonymous and disposable: no accounts, no tracking, no trace left behind
- There's a self-hosted version for teams that want it fully on their own infrastructure
Would love your feedback — especially if you've ever been the person frantically searching "HDMI adapter near me" five minutes before a talk.
Try it now: https://syncby.app