Founder, SlideGMM AI
Henry Yos
I've been building presentation tooling for 8 years and reviewing pitch decks for early-stage founders for almost as long. Before SlideGMM I worked on internal slide-generation tools at two SaaS startups (one acquired, one still running) and helped portfolio companies at a small accelerator with their fundraise decks. I've personally raised three rounds and reviewed 1,000+ decks across Seed, Series A, and Series B stages. SlideGMM exists because I got tired of fighting Gamma's PowerPoint export and wanted a tool that produced .pptx files VCs could actually edit.
Areas of expertise
- Pitch deck strategy
- Investor fundraising
- AI presentation tooling
- Product design for presentation software
- Multi-language SEO for SaaS
Posts by Henry
Tome Shutdown 2026: 8 Alternatives Ranked by PowerPoint Export Quality
Tome sunset its decks April 30, 2025. 8 alternatives ranked: Gamma, Beautiful.ai, SlideGMM, Plus AI, Decktopus, Pitch, Canva, Prezi. Migration tested — which fits you?
10 min read · comparisonStop Using Storytelling Frameworks 2026: What VCs Actually Skim For
Hero's Journey and Pixar Spine are pretty theory — eye-tracking data shows VCs skim, don't read narrative arcs. The contrarian playbook: structure first, narrative last.
9 min read · how-toSeries A Pitch Deck Checklist 2026: 14 Slides + Pre-Seed Upgrade
Series A deck differs from pre-seed: 14 slides VCs expect, metrics that close the round, appendix material, and 5 mistakes pre-seed founders make when upgrading.
13 min read · how-toSales Decks That Close 2026: Cold Outbound, RFP, Demo Compared
3 sales deck types, 3 structures: cold outbound (12 slides), RFP response (15-20), demo (8). What works, what kills each, when to use which by sales stage.
9 min read · how-toSaaS Pitch Deck Framework 2026: ARR, NRR, GTM — What VCs Want
The SaaS pitch deck slides VCs actually read: ARR growth, NRR, GTM motion, expansion math. Benchmarks for 2026 SaaS funding bar with founder examples.
9 min read · how-toPre-Seed Pitch Deck Playbook 2026: 9-Slide Structure VCs Read
Pre-seed deck that closes capital in 2026: 9-slide structure, what each must contain, what to cut, plus 5 sanitized real examples from founders who closed $250K-$2M.
10 min read · how-toPlus AI vs Gamma vs SlideGMM 2026: Best for Microsoft 365 Users
Microsoft 365 users: Plus AI lives in PowerPoint, Gamma exports flattened decks, SlideGMM converts PDFs/URLs to editable .pptx. 60-day test — which fits your workflow.
9 min read · comparisonPDF to Slides 2026: Research Papers, Reports & eBooks Tested
Convert PDFs to editable slides — papers, market reports, eBooks. OCR pitfalls, citation preservation, tables, charts. SlideGMM, Gamma, Beautiful.ai, ChatGPT tested.
11 min read · how-toHow VCs Filter 100 Pitch Decks a Week 2026: Eye-Tracking Data
Original research: eye-tracking + 8 VC firms + 1,200 decks tracked. The 5 slides that decide 80% of the read. Median 3m 44s time-on-deck. What founders miss.
10 min read · researchDecktopus vs Gamma vs SlideGMM 2026: Budget AI Decks Under $10/mo
60-day test: Decktopus ($6/mo), Gamma Plus ($10/mo), SlideGMM ($4.99/mo). Free tier limits, PowerPoint export quality, AI generation — which fits your workflow.
8 min read · comparisonBoard Update Decks 2026: 12-Slide Structure Investors Read
Board update decks investors actually finish: 12-slide structure, metrics that matter, what to cut, and the one mistake every founder makes on the asks slide.
9 min read · how-toBeautiful.ai Review 2026: 30 Days Tested — Smart-Slide Verdict
30-day Beautiful.ai test: smart-slide design system, brand kit, PowerPoint export quality, mobile gap, pricing. 4 use cases where Beautiful.ai beats Gamma + SlideGMM.
10 min read · comparisonYouTube Video to Presentation 2026: 3 AI Methods Tested
3 ways to convert YouTube videos to slides — one-click AI tools to manual transcript workflows. Tested on a 20-minute talk: what works, what fails, time + quality.
9 min read · how-toTome vs SlideGMM 2026: Migration Guide + 5 Alternatives Ranked
Tome sunset slides April 30, 2025. Migration tree: Gamma for storytelling, SlideGMM for PowerPoint export, Beautiful.ai for brand, Plus AI for Microsoft 365.
8 min read · comparisonReddit on AI Presentation Tools 2026: 500+ Comments Analyzed
500+ Reddit comments across r/startups, r/productivity, r/marketing on Gamma, Tome, Beautiful.ai, SlideGMM — the praise, the complaints, the gaps founders actually hit.
9 min read · researchPitch Deck Storytelling Frameworks 2026: 5 Patterns VCs Actually Read
5 storytelling frameworks tested — Hero's Journey, PAS, Before-After-Bridge, Why-How-What, YC Memo. Which work for VCs, when each fails, plus templates founders can copy.
11 min read · how-toAI Investor Pitch Deck 2026: 11-Slide Structure VCs Expect
Step-by-step Seed/Series A pitch deck with AI tools. Real prompts, slide structures, and the 11 slides every VC reads — built from 1,000+ deck reviews.
11 min read · how-toGamma Free Plan 2026: 400 Credits, Watermark, Limits & 4 Fixes
Gamma free tier: 400 lifetime AI credits, watermark on export, plan caps. Exact limits with screenshots + 4 workarounds before paying $10/mo for Plus.
9 min read · pain-pointGamma PowerPoint Export 2026: Why It Breaks & 3 Real Workarounds
Gamma .pptx export flattens layers — animations vanish, fonts substitute, layouts break. Exact failures with screenshots + 3 workarounds to ship a clean PowerPoint file.
10 min read · pain-pointGamma AI Review 2026: 6 Months Tested — Strengths, Limits & Verdict
Honest Gamma AI review after 6 months daily use. Storytelling templates and animations win; PowerPoint export flattens layers; free tier capped at 400 lifetime credits.
12 min read · comparisonChatGPT to PowerPoint 2026: 5 Methods Tested + Ranked
5 ways to convert ChatGPT output to PowerPoint — one-click AI tools to manual copy-paste. Tested on same prompt, ranked by quality, speed, and effort. Best workflow.
9 min read · how-toAI Presentation Tools 2026: Gamma vs Beautiful.ai vs SlideGMM
12 months testing 4 AI deck tools head-to-head. Gamma, Beautiful.ai, SlideGMM, Plus AI compared on first-draft quality, PowerPoint export, pricing. Tome shut April 2025.
11 min read · comparison20 Free AI Presentation Templates 2026: Pitch, Marketing & Sales
20 genuinely-free AI presentation templates: pitch decks, marketing, sales, education. Honest notes on quality, licensing, and the catches behind 'free' downloads.
8 min read · listicle15 Unicorn Pitch Decks 2026: Airbnb, Stripe, Figma Slide-by-Slide
15 real unicorn pitch decks broken down slide-by-slide: Airbnb, Stripe, Figma, Notion, Slack, Dropbox, Uber, DoorDash, Robinhood, Coinbase, Canva, Loom, Linear, Calm.
15 min read · listicle