
FishCare AI
AquaTasks
AquariumCalc.com
Petme
Aquarium
Pet Pace
Atlarium.bio
The aquarist's logbook.

PDFShift
DocRaptor
PDFCrowd
pdflayer
HTML PDF API
PDF my URL
HTML2PDF Rocket
PDF Generation API, powered by AWS Lambda. HTML to PDF | URL to PDF | Office Doc to PDF | Merge PDFs . Supports wkhtmltopdf, Headless Chrome, and LibreOffice. No rate limits and no file size limits.

Which is more popular?
Based on our record, Api2Pdf seems to be more popular. It has been mentioned 4 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | tankbud.com | api2pdf.com |
| Pricing | ||
| Platforms | — | |
| Company | Startup from the United States · 1 - 9 employees | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Free for hobbyists. TankBud keeps a whole fishroom in one place. Log water tests and see trends per parameter, set repeating maintenance reminders, and track livestock, plants and equipment per tank with photos. A public care catalog covers 2,000+ fish, invertebrates and corals plus 300+ plants,...
Api2Pdf.com is an easy-to-use REST API that gets you converting HTML to PDF in minutes. You don't need to worry about installing a PDF rendering engine on your local developer environment and wrangle with it when you deploy your web app to production. Api2Pdf is a wrapper for WKHTMLTOPDF,...
What each product offers, as listed by its team.


Possible disadvantages
Walkthroughs and reviews on video.
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Generate PDFs from .NET with Api2Pdf.com
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing TankBud and Api2Pdf.
TankBud's answer
Next.js and React with TypeScript, Postgres on Supabase, deployed on Railway. TankBud is an installable web app (PWA), so it runs in any modern browser and installs to a phone home screen without an app store.
TankBud's answer
Freshwater and saltwater hobbyists, from one betta tank to a whole fishroom. People who want water tests, maintenance and stocking plans in one place instead of a spreadsheet. There's also a business tier for aquarium service companies, fish stores, breeders, and any other business that manages multiple tanks.
TankBud's answer
Most aquarium apps do logging or calculators, not both. TankBud ties them together, so the same care data behind the public catalog powers the stocking check in your plans and tanks. There's no cost for hobbyists. Paid plans exist for businesses that manage multiple tanks (fish stores, breeders, service companies with client tanks), and those come with a free trial.
TankBud's answer
TankBud connects tracking to care data. The catalog covers a growing list of 1,500+ fish, invertebrates and corals plus 300+ plants, with tank size, water parameters, temperament and tank mates for each. The stocking calculator checks a planned community against that data before you buy anything. Saved plans convert into live tanks with the same logs, reminders and photos.
TankBud's answer
I'm a long time aquarium hobbyist and a software engineer. I first built TankBud for my own tanks because my water tests, maintenance notes and stocking research were spread across a spreadsheet, a notes app and a pile of browser tabs. I worked on it for a couple of years and it's now officially released. The care catalog and stocking calculator are free for anyone to use, no account needed.
Share your experience with using TankBud and Api2Pdf. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


Tracking TankBud since Aug 2026.
My colleague and I built api2pdf.com and launched in 2018. It was a massive amount of upfront work requiring sleepless nights and weekends for months on end because launching a SaaS involves way more than just the software component. Source: almost 4 years ago
It might be easiest to use something like api2pdf.com to convert the HTML to PDF using a simple REST API call instead of trying to wrangle wkhtmltopdf or headless chrome inside serverless functions on Netlify or Google Cloud. That can... Source: over 4 years ago
I built api2pdf.com - there was a massive upfront effort to build the product, infrastructure, marketing, everything you need to create a real business and a reliable, high quality service. Source: over 5 years ago
When comparing TankBud and Api2Pdf, you can also consider the following products.

AI-powered aquarium care guides and free tools for freshwater fishkeepers, covering species care, water checks, compatibility, bowls, and oxygen issues.
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Convert any HTML documents to high-fidelity PDF using a single POST request
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Track recurring tasks & water chemistry in your aquarium.
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As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
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Free aquarium calculator tools for hobbyists. Calculate tank volume, water capacity, heater size, filter flow, and more.
Compare AquariumCalc.com to TankBud or Api2Pdf:

Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.
Compare PDFCrowd to TankBud or Api2Pdf: