Technology & formats
The best presentation app is the one you never installed.
Somewhere in the last decade the browser turned into a complete runtime: it renders documents, drives the GPU, encrypts its own traffic and talks device-to-device. For putting slides on a screen, that's the entire toolkit — already on every machine in the room.
6 min read
May 2026
Every claim sourced · 4 references
Think about what showing slides actually requires: draw a document faithfully, push pixels to a big display, move data between two devices securely, maybe read a QR code. A decade ago each of those meant native software. Today they're all web standards, sitting idle in the browser you already have open.
✕ The myth
"Real presenting needs real, installed software."
Browsers are for websites; serious work needs a desktop app on every machine.
✓ The reality
The browser is a full runtime now.
Standardised PDF handling, GPU graphics, encrypted peer-to-peer networking and cryptography all ship in the box — no install, on every OS.
The receipts are all published standards: encrypted, real-time device-to-device networking via WebRTC,1 GPU-accelerated graphics via WebGL/Canvas,2 real cryptography via the Web Crypto API,3 and document rendering for the open PDF standard.4 That's a presentation stack.
"Nothing to install" is a feature, not a compromise
Every install is friction and risk: admin rights you don't have on the client's PC, a version mismatch, an IT ticket, an update mid-meeting. A browser sidesteps all of it. The receiving screen just opens a URL; your phone just opens a URL; the standards do the rest. The most portable app is the one that was already there.
WebRTC
Encrypted, peer-to-peer, real-time — the transport for sending slides.
1
WebGL
GPU graphics in the tab, for smooth rendering of sharp visuals.
2
Web Crypto
Standardised cryptography built in — no bolted-on security library.
3
⚖ The honest bit — the browser can't do everything
Native still wins for some jobs.
We're not claiming the browser replaces every desktop app. Deep OS integration, heavy pro tools (video editing, CAD authoring), certain DRM-locked codecs, and truly offline-first workflows are still better native. And a web tool depends on the browser being reasonably current. The honest claim is narrower and holds: for taking finished slides and putting them on a screen, the browser already has every capability required — so making people install anything is a choice, not a necessity.
Where SyncBy!App fits
SyncBy is deliberately just a web page. Open it on the screen, open it on your phone, present. It uses the browser's own WebRTC, rendering and crypto rather than shipping its own — which is why there's nothing to download, nothing to update, and nothing for a client's IT department to approve. When you genuinely need a native tool, use it; for wireless slides, the browser is enough.
TL;DR
- Modern browsers ship WebRTC, GPU graphics, cryptography and PDF handling — all as open standards.1234
- That's a complete stack for putting slides on a screen — zero installs, any OS.
- Honest caveat: native still wins for deep OS work, heavy pro tools and some codecs.
- For finished slides on a display, "install nothing" is a feature.