r/saasinvestors

▲ 432 r/saasinvestors+3 crossposts

Made a PDF to EPUB converter that actually handles scanned books

Hey people,

My girlfriend started reading on her Kindle and kept converting PDFs and getting books she couldn't read properly. I am a software developer, so she always told me to make her a better conversion tool. For the past month, I dug into why other tools failed, researched how EPUB works, and how I can make it work.

So I built convert2epub.com. It’s free, and no account is needed for normal text conversions, only for the work done converting scanned pdf's. I posted the first version on r/kindle and got 500 upvotes, improved the first version based on the feedback, and now people are saying it's the best tool they have ever used.

Scans that were already read

Publishers often leave recognised text sitting invisibly on top of the page image. Most converters ignore it and hand back a book of photographs. This one finds that layer and uses it.

I tested this with a 300-page novel. The PDF had 426,904 characters of clean text inside it. Other converters ignored those characters and converted it to an EPUB that contained 637. It was a 20MB book of pictures.

That same book now comes out at 1.4MB with real, resizable text.

Formula/Code recognition

Mathematics is set in two dimensions and extraction reads in one, so a fraction arrives as a column of fragments. Equations are kept as drawn while the prose around them still reflows.

Your typography back

The first page becomes the cover, and the title and author are read from the file rather than left as a filename.

Removing watermarks and repeated title/footer.

Every page of a book repeats its title, author and page number in the margin. On paper, you never notice. Extract the text, and those become ordinary lines, so your reader flows them straight into the prose. Same for watermarks and adverts stamped onto free PDFs. In that same book, it was 778 stray lines across four repeating patterns. I added a feature to remove them.

When there is no text to recover, OCR reads the pages instead, in eight languages and only the pages that actually need it.

reddit.com
u/tashkan — 14 hours ago

What SaaS are you building? Drop it 👇

Always interested in seeing indie SaaS projects.

Drop yours and what it does.

Mine: LaunchRecord, I built it because I noticed most SaaS sites don’t fail on product… they fail on clarity. It helps you see what first-time visitors actually understand (or don’t).

If you want to check it out: LaunchRecord

reddit.com
u/MahadyManana — 10 hours ago
▲ 9 r/saasinvestors+3 crossposts

I’m Bailey Pumfleet, Co-Founder & CEO of Cal.com. Started building at 17. Today it’s used by 1M+ people, backed by Alexis Ohanian, Naval Ravikant, Balaji Srinivasan, Tobi Lütke, and valued at over $200M. Ask Me Anything.

Hey everyone, I’m Bailey, co-founder and CEO of Cal.com. I started building Cal.com at 17.

Since then, Cal.com has grown to more than 1M users, raised over $32M, and reached a valuation above $200M.

I’ve spent the last few years building, hiring, fundraising, and scaling in a competitive SaaS market. Ask me anything about fundraising, working with investors, growth, or the decisions and mistakes behind the journey.

If you’re building something, navigating your career, or curious about how companies get built, leave your question below.

Jacob Solano, Head of Partnerships & Community at Fibe, and I will use this thread to help prioritize what we cover during our live AMA on X on August 26 at 11:00 AM ET.

RSVP to join the live: https://cal.com/bailey-and-jacob-ama

u/baileypumfleet-ama — 10 hours ago
▲ 35 r/saasinvestors+15 crossposts

Prepare for your ProductHunt launch ahead of time

Hi all,

As i'm working on growing launchpact.io i'm seeing a lot of unprepped launches and as the day unfold they don't get much visibility and end up with a failed launch.

This is one of the reasons i build launchpact.io, if you have an upcoming launch do check it out and prep ahead of time, i also added this checklist that can give some hints too, have a read.

Good luck everyone!

u/Competitive_Tune_590 — 19 hours ago
▲ 17 r/saasinvestors+6 crossposts

I got tired of checking 10 different sites for stock research, so I built Walnut Markets

I built Walnut Markets because most stock research still feels way too fragmented.

You can find Congress trades, insider filings, institutional data, technicals, fundamentals, contracts, and news — but usually not in one place, and rarely with a clear read on what the data is saying.

Walnut is my attempt to fix that.

It tracks:

- Congress disclosures

- Insider activity

- Government contracts

- Institutional filings

- Technicals / price-volume

- Fundamentals

- Watchlists and screeners

- Bullish and bearish monitors

- A proprietary confirmation score

The goal is not stock picks.

The goal is better research.

If $MU is moving, I want to know whether the data actually supports the move: revenue, EPS, margins, price action, institutional activity, insider/Congress disclosures, and what to watch next.

Free tools are great for alerts. I’m trying to build something more useful for actual research.

Would appreciate any feedback, especially from people who track filings, insiders, Congress trades, or earnings closely.

https://walnutmarkets.com

Research only. Not investment advice.

u/Comprehensive_Tea388 — 22 hours ago

What SaaS are you building? Drop it 👇

Always interested in seeing indie SaaS projects.

Drop yours and what it does.

Mine: LaunchRecord, I built it because I noticed most SaaS sites don’t fail on product… they fail on clarity. It helps you see what first-time visitors actually understand (or don’t).

If you want to check it out: LaunchRecord

reddit.com
u/MahadyManana — 1 day ago

What SaaS are you building? Drop it 👇

Always interested in seeing indie SaaS projects.

Drop yours and what it does.

Mine: LaunchRecord, I built it because I noticed most SaaS sites don’t fail on product… they fail on clarity. It helps you see what first-time visitors actually understand (or don’t).

If you want to check it out: LaunchRecord

reddit.com
u/MahadyManana — 2 days ago

Drop your startup below. What are you building and why?

I'll go first: OBridge. We replace the cold email grind with video pitch reels that get you in front of real investors, matched by stage and sector, and close your round on regulated rails. No gatekeepers, no warm intro lottery.

Your turn.

reddit.com
u/CartoonistGlad6223 — 2 days ago

What SaaS are you building? Drop it 👇

Always interested in seeing indie SaaS projects.

Drop yours and what it does.

Mine: LaunchRecord, I built it because I noticed most SaaS sites don’t fail on product… they fail on clarity. It helps you see what first-time visitors actually understand (or don’t).

If you want to check it out: LaunchRecord

reddit.com
u/MahadyManana — 3 days ago

I built a small SaaS for indie devs who hate dealing with localization files

I kept seeing the same problem with game localization.

You can use AI to translate the actual text pretty easily, but the annoying part is everything around it. Variables get changed, tags get broken, some strings get skipped, JSON gets messed up, and suddenly you're debugging a translation file instead of working on the game.

So I built LocaFile AI around that specific problem.

The basic idea is pretty simple:

Upload your localization file → lock the variables and code-sensitive parts → translate the strings → verify the structure afterward → get the translated files back.

It currently handles things like {player_name}, %s, rich text tags, Smart Strings and other variable formats. It also supports formats used by Godot, Unity, Unreal, JSON, iOS, Android, Laravel and others.

I'm deliberately keeping it focused rather than trying to become another giant localization platform.

I'm curious about the business side of this though.

If you were building a small SaaS for indie game developers, would you rather pay per localization job like this, or would a monthly subscription make more sense?

And if you've shipped a game with localization before, what's been the most frustrating part of the process?

reddit.com
u/Vegetable_Echo3093 — 3 days ago
▲ 28 r/saasinvestors+27 crossposts

Things have been getting crazy for my SaaS recently 🔥

Around 2-3 weeks ago I launched my SaaS, SeoLoupe.

It is a lightweight SEO tool that helps you find and fix SEO issues holding your website back, currently I am at 432 users and 5 paying users.

Essentianly the main purpose is to help your website rank higher on Google search and LLMs.

Since I am always trying my best to improve the product, I am happy to answer any questions or any feedback in the comments.

(here is the product if you want to check it out)

u/megatech_official — 4 days ago
▲ 11 r/saasinvestors+7 crossposts

I want to gift 🎁 everyone 100 smart taggable sticky notes 🗒️ free

TaskLoco is a sticky-note storyboard workspace for tasks, events, notes, projects, files, reminders, and anything you can stick in or attach to a digital sticky note.

Freemium version now includes 100 taggable sticky notes no strings attached

Website: https://www.taskloco.com

u/Early_Key_823 — 3 days ago

What SaaS are you building? Drop it 👇

Always interested in seeing indie SaaS projects.

Drop yours and what it does.

Mine: LaunchRecord, I built it because I noticed most SaaS sites don’t fail on product… they fail on clarity. It helps you see what first-time visitors actually understand (or don’t).

If you want to check it out: LaunchRecord

reddit.com
u/MahadyManana — 4 days ago
▲ 15 r/saasinvestors+7 crossposts

I have ADHD and built a sticky note on a storyboard app to overcome my inertia

Unlike other productivity apps TaskLoco goes with your flow.

It’s visual and spatial so you can actually focus because you can literally see what you’re doing

TaskLoco is visual sticky-note storyboard for tasks, events, docs, notes, media & files.

Anyone can TRY IT FREE @ (https://www.taskloco.com)

u/Early_Key_823 — 3 days ago
▲ 10 r/saasinvestors+3 crossposts

Scheduled-PR – merge GitHub/Azure DevOps PRs at a chosen time

My SaaS apps auto-deploy off main. Updates pile up (security, features), but merging at 14:00 is a deploy at 14:00 and knocks people off the app.

GitHub auto-merge and Azure DevOps auto-complete fire when checks pass. Neither will wait until Friday 18:00. Neither will refuse a Saturday merge.

Scheduled-PR is a GitHub App and an Azure DevOps extension. Comment /schedule friday 18:00 Europe/Berlin (or a label, or the dashboard). At that instant it re-reads the PR: still open, no conflicts, checks green, outside your blackout windows. Then it merges, or it says why not.

One bot comment per PR, edited in place. Policy lives in .scheduled-pr.yml in the repo.

https://scheduled-pr.dev

u/Lordkro — 4 days ago
▲ 4 r/saasinvestors+1 crossposts

I have launched my security scanning SaaS, less than 2 weeks ago and I am already blessed with 4 paying users !

6 security checks you can run on your own SaaS in 15 minutes :

I am a cybersecurity enthusiast and the same handful of mistakes shows up in almost every app built fast. None of these need a tool.

  1. Row-level security is off Your Supabase anon key is public by design. RLS is the only thing stopping anyone from reading every row. Check: Table Editor, look for the "RLS disabled" badge. Any table with user data and that badge is a public database.
  2. RLS is on but the policy allows everything using (true) is the same as no policy. Check: Authentication > Policies. If a policy never references auth.uid(), it is not restricting anything.
  3. Secrets in NEXT_PUBLIC_ or VITE_ variables Those get compiled into the JS bundle and shipped to every visitor. Service role keys land here constantly because the AI put them there to clear an error. Check: grep -rn "NEXT_PUBLIC_\|VITE_" .env*. Would you print each value on your homepage? If not, move it.
  4. Auth that only runs in the browser A redirect in a React component is a suggestion, not authentication. Check: curl your most sensitive API route with no session cookie. If it returns data, your auth is in the wrong place.
  5. .env in git history Deleting the file does not remove it. If the repo was ever public, assume the keys are gone. Check: git log --all --full-history -- .env. Any output means rotate today.
  6. Webhook with no signature check Anyone who finds the URL can POST a fake "payment succeeded" and upgrade themselves free. Check: your Stripe or Paddle handler. If it reads the body before verifying a signature, it is an open door.

1 and 4 cause most of the breaches you read about. Moltbook leaked 1.5M API tokens in February from exactly that combination: publishable key in client JS, RLS off

Disclosure: I have build Sentrint (https://sentrint.com/?utm\_source=reddit), which automates these. Feel free to ask me any questions.

Which of these did you find on your own app?

u/sentrint-bot — 4 days ago
▲ 3 r/saasinvestors+2 crossposts

I built a wood & leather wireless charger, bought a CNC, got overwhelmed tracking materials, and ended up making an iOS app to fix it.

Hey everyone,

Over the past year, I’ve been working on a personal project — designing a wireless phone/headphone charger made out of wood and leather. To bring the project to life, I bought a CNC machine about 6 months ago.

That immediately launched me into a black hole of prep work: building a soundproof enclosure, ordering end mills, sourcing stock materials, and buying endless small parts.

Very quickly, I hit a wall. Managing inventory, material costs, and project estimates in Google Sheets was a massive pain — especially when I just wanted to be at my workbench, not booting up a PC to update a cell.

Since I’m a developer, I decided to build a simple tool to solve my own headache. Fast forward 5 months, and I just released the first version of Trace on the App Store.

What Trace does:

Workshop Inventory: Track stock (wood, acrylic, hardware, tools) straight from your phone.

Project Costing: Calculate the real cost of every build (materials + labor) on the fly.

Invoices: Instantly generate clean PDF receipts/invoices for clients or sales.

Since I built this out of a genuine need from my own maker journey, I would love to get your honest feedback, critique, or feature ideas so I can keep improving it for the community.

You can check it out on the App Store: https://apps.apple.com/lv/app/trace-workshop-manager/id6789042632

Thanks for reading, and happy making!

u/OTDOXHYJI — 4 days ago

What SaaS are you building? Drop it 👇

Always interested in seeing indie SaaS projects.

Drop yours and what it does.

Mine: LaunchRecord, I built it because I noticed most SaaS sites don’t fail on product… they fail on clarity. It helps you see what first-time visitors actually understand (or don’t).

If you want to check it out: LaunchRecord

reddit.com
u/MahadyManana — 5 days ago

What SaaS are you building? Drop it 👇

Always interested in seeing indie SaaS projects.

Drop yours and what it does.

Mine: LaunchRecord, I built it because I noticed most SaaS sites don’t fail on product… they fail on clarity. It helps you see what first-time visitors actually understand (or don’t).

If you want to check it out: LaunchRecord

reddit.com
u/MahadyManana — 6 days ago
▲ 16 r/saasinvestors+2 crossposts

Drop your SaaS — especially if you’re struggling with engagement or traffic

Building a SaaS is one thing. Getting people to notice, visit, and actually engage with it is another.

Drop your SaaS below with:

  1. What it does
  2. Who it’s for
  3. What’s currently holding back your growth

I’ll check out as many as possible and share honest feedback.

I’m building Shipflash, a production-ready SaaS foundation that helps founders skip repetitive setup and focus more on building, launching, and growing the actual product.

https://shipflash.dev

Drop yours 👇

u/ryan_almasu — 7 days ago