Our marketing team had been using Keynote for years. The decks looked great on Mac, but as soon as we fully moved to Google Workspace, the cracks started showing. Files had to be converted, shared over email, and re-edited every time someone needed a slightly different version. It was not sustainable. So I took on the task of migrating our 30 to 50 core marketing slides from Keynote to Google Slides and creating a proper reusable presentation template in the process.
It sounded straightforward at first. Export the Keynote file, import it into Google Slides, and clean things up. That was the plan.
What Actually Happens When You Import Keynote Slides Into Google Slides
The import process works — but only to a point. Fonts either substitute or disappear entirely if they are not available in Google's ecosystem. Custom animations that worked smoothly in Keynote either break or get stripped out. Slide layouts shift slightly, and what looked polished on one platform looks misaligned on the other. Backgrounds behave differently. Master slides do not carry over the way you expect.
I spent an evening trying to manually fix a batch of about fifteen slides. By the end of it, I had adjusted spacing on every single slide, replaced fonts twice, and still could not get the logo and footer placement to match the original. Multiply that across 50 slides and you are looking at a multi-day project — not counting building the Google Slides template from scratch on top of it.
The Template Problem Was a Separate Challenge Altogether
Creating a reusable Google Slides presentation template is not just about making slides look consistent. It involves setting up proper slide masters, defining text styles across title, body, and caption levels, embedding brand colors into the theme palette, and making sure every layout variant — title slide, content slide, data slide, divider — behaves predictably when someone duplicates the template.
I knew what the end result needed to look like. I had the brand guidelines, the color codes, and the fonts. But translating all of that into a fully functional Google Slides master with multiple layout options was a different kind of work. It required understanding how Google Slides handles themes at a structural level, not just a visual one.
After hitting that wall, I came across Helion360. I explained the full scope — migrate the existing Keynote slides accurately, preserve layout and visual consistency, and build a branded Google Slides template that the team could reuse going forward. Their team understood the brief immediately and took it from there.
How the Migration and Template Build Actually Went
Helion360 handled the slide migration with attention to the details that had tripped me up. Each slide was rebuilt or corrected individually rather than just imported and left as-is. Fonts were matched to available Google Fonts equivalents that fit the brand. Spacing, alignment, and visual hierarchy were preserved slide by slide. Animations were reviewed and either recreated or replaced with cleaner transitions that worked natively in Google Slides.
The custom presentation template was the part I was most impressed with. They built out a full master slide system with clearly defined layouts — opening slide, section dividers, text-heavy content slides, image-forward slides, and a closing layout. Brand colors were loaded into the theme so any team member could pick them from the color palette without needing to enter hex codes manually. Fonts were set at the master level, so headings and body text stayed consistent no matter which slide layout someone used.
The end result was a deck and a template that actually worked for a real team — not just something that looked good in a screenshot.
What I Would Have Done Differently
I would have started with a proper audit of the Keynote file before attempting any import. The issues that made the migration complex — custom fonts, layered animations, non-standard layout sizes — were all identifiable upfront. Knowing what you are working with saves a lot of time.
I also underestimated how much design thinking goes into a functional Google Slides template. It is not a cosmetic exercise. The structure of the master slides determines how usable the template actually is once other team members start working with it.
If you are facing the same situation — whether it is a Keynote to Google Slides migration, branded presentation template, or both — consider marketing presentation design services. They handled the parts that were genuinely beyond a quick DIY fix and delivered a presentation system the whole team could actually use.