Why consulting teams are trading PowerPoint for HTML

What breaks when the deck leaves the room

Version sprawl. Every edit makes a new file and every file makes a new copy in someone's inbox. The version a client quotes back at you in week six is rarely the one you last worked on.

Weight. A deck with real imagery clears 40 MB quickly, which is past what most mail servers accept. So it moves to a file share, which adds a login, which loses half the audience.

Silence. Once the file lands you know nothing. Not whether it was opened, not which section held attention, not whether the appendix you spent two days on was ever reached.

Formatting roulette. Fonts substitute, a chart nudges, and the deck you approved is not always the deck they see.

Phones. Sixteen by nine slides carrying eight point footnotes are unreadable on the device most people actually open them on.

What a web page does instead

One link, always current. You send a URL once. When the number changes you patch the page, and the link everyone already has shows the new version. There is no v7 because there is only ever one.

No weight limit that matters. Images load as the reader scrolls, and nothing bounces off a mail server.

Read data. You see who opened it, when, how long they stayed and which sections they reached. That turns the follow up from a guess into a response to something real.

It renders the same everywhere. A web page is the one format every device already agrees on, and it reflows on a phone without anyone building a mobile version.

It can do things a slide cannot. A pricing model with sliders the client can move. A chart that filters. A contents list that jumps. The reader explores instead of being walked through.

The honest trade offs

Two things genuinely get harder. Speaker notes and printed handouts are native to PowerPoint, so in HTML they have to be handled on purpose, usually with a print stylesheet or an exported PDF for the people who want paper. And a client whose procurement process expects an attached file will sometimes want the attachment whatever is better.

Neither is a reason to keep building decks by hand. Both are a reason to keep a print view next to the page.

Where the maths changed

HTML used to lose on effort. A consultant could assemble a deck in an afternoon, and a web page needed a developer. That stopped being true. You describe the page in a conversation and your AI writes it, which makes the build cost roughly equal and leaves every downstream property of the web page better.

That is the actual reason the switch is happening now, and why it started at firms whose entire product is the document.

How to start without a migration project

Pick the next deliverable, not the archive. Build one page, send one link, and read what the engagement data tells you. Most teams do a second one inside a week, because the first client call where you already know which section they read is hard to unlearn.