Founders & Small BusinessFree
Pitch Deck Writer for Startup Founders
Paste your notes, plan or current deck. Get a headline, supporting lines and speaker notes for every slide, in the order investors expect.
River's pitch deck writer turns what you know about your company into the words for every slide. Paste your notes, attach a business plan, or drop in the deck you have now. You get each slide's headline written as the point it makes, two to four supporting lines, the one number or picture it needs, and speaker notes. The slides follow the order investors expect, adjusted to your stage, and every metric comes from your own material.
Most pitch deck generators hand back a stack of designed slides filled with confident claims that nobody checked. The trouble starts in the first meeting, when an investor asks where a number came from. This writer works the other way round. It uses only the figures you give it and lists each one an investor is likely to question. For the evidence behind every number, the seed round pitch deck template keeps a source and a date beside each figure.
This is for founders preparing a pre-seed or seed raise, rewriting a deck that is not getting second meetings, or turning a business plan into a pitch. It also helps before a demo day, a first call with an angel investor, or an accelerator, where the Y Combinator application writer reuses the same facts. To see your deck the way a partner will read it, get seed investor feedback on your deck. When a term sheet finally arrives, the term sheet explainer shows what it actually pays you.
What makes a pitch deck work
A deck is read before it is presented. Many investors see it in an email first and decide from that whether to take the meeting. So each slide has to make its point without you in the room. The simplest test is to read only the headlines in order. If they tell the story on their own, the deck works. If the headlines are labels like Market or Team, the reader has to work out for themselves what you meant to say.
Compare two headlines for the same slide in an illustrative example. One says Traction. The other says 41 clinics now pay us monthly, up from 12 in January, and none has left. The second gives the number, the trend and the proof of retention in one line, and the chart underneath only has to confirm it. The same rule applies to the market slide: say exactly who buys and how many of them there are today.
The order matters less than the questions each slide answers. An investor wants to know what the problem is, why now, why you, how big this can get, and what the money buys. Sequoia's outline for a pitch asks the why-now question outright: why has nobody built this before? Lead with your strongest evidence, even if that moves traction ahead of the product. Keep claims you cannot back up off the slides, because one figure that falls apart in diligence makes the rest of the deck look doubtful too.
How it works
Share your material
Paste notes, attach a business plan or your current deck, and add what you are raising.
River writes each slide
Headlines, supporting lines, the number each slide needs and speaker notes, all from your facts.
Get the deck text
A slide by slide document, plus a list of the numbers you should be ready to back up.
Sharpen it in chat
Ask for a shorter teaser version, a tougher traction slide, or help turning the text into slides.
What you get
- A headline for every slide written as the point it makes, not a one word label
- Two to four supporting lines per slide, plus the one number or chart it needs
- Speaker notes for each slide, so you can present it the same way every time
- Slide order adjusted to your stage, with your strongest evidence moved toward the front
- Every metric taken from your own material, and each one an investor will question listed
- The gaps a partner will notice first, such as missing retention or an unclear use of funds
Common questions
Does this make the slides themselves?
It writes everything that goes on the slides and in your speaker notes, in a document you can edit. Once the words are right, you can ask River in the same chat to build the slides from them, or paste the text into the design tool you already use. Getting the words right first saves redesigning slides every time the story changes.
How many slides should my deck have?
Usually somewhere between ten and fifteen. River writes the slides your story needs, such as problem, solution, why now, market, product, traction, business model, competition, team and the ask, and drops or merges the ones you cannot yet support. A pre-seed deck with no revenue should not carry an empty traction slide.
What if I do not have traction yet?
Then the deck leans on what you do have: customer interviews, a waitlist, letters of intent, a pilot, or the founders' history with the problem. River writes those as evidence, states plainly what is not proven yet, and says what the money will prove. Investors at the earliest stage expect that, and they notice when a deck pretends otherwise.
Will River make up numbers to fill a slide?
No. Every figure comes from your notes, files or a public source River cites. If a slide needs a number you have not provided, such as market size or monthly churn, River marks it for you to fill in. You also get a list of the figures an investor is most likely to ask you to back up.
Can I use it to fix a deck I already have?
Yes. Attach the current deck and River rewrites it slide by slide, keeping your facts and strongest material. It will often reorder the slides so your best evidence comes earlier, rewrite label headlines as statements, and flag claims that need support. Keep your original so you can compare the two versions side by side.
How is this different from a business plan?
A deck is a short argument for a meeting, and a business plan is the detailed case behind it. Lenders usually want the plan, and early investors usually want the deck first. If you need both, a business plan writer builds the plan from the same notes, and River keeps the numbers consistent between them.
Built by
Chandler Supple
Co-founder & CEO, River
Chandler has spent the last six years working in AI, building tools for millions of users and Fortune 100 companies. In 2025, he co-founded River to build a new kind of operating system for AI agents.
Pitch Deck Writer for Startup Founders
Describe what you need, add any files you have, and your workspace opens with the work already underway.