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Cellystial
Fast PDF document generation SaaS platform.
Generate pixel-perfect invoices, receipts & contracts in milliseconds with a drag-and-drop template builder and a blazing-fast PDF generation API.
One night, scrolling through linkedin, I came across Zerodha's engineering write-up, “1.5 million PDFs in 25 minutes,” describing how they'd torn headless Chrome out of their PDF pipeline, tried LaTeX, and finally landed on Typst, a modern, open-source typesetting engine written in Rust. Around the same time I read how Zomato had rebuilt their own pipeline (they call it Espresso) to render and sign over a million PDFs in minutes.
What fascinated me most was that they'd taken different roads. Zomato squeezed every drop of performance out of headless Chromium with Go. Zerodha went further and abandoned the browser entirely for Typst. A 2000 page document that took 18 minutes with LaTeX rendered in about 1 minute with Typst, out of a tiny statically-linked binary. So I tried it for myself.
PDF was returned in milliseconds, and it looked perfect every time.
But Typst is a typesetting language and you have to learn it. So I kept thinking about everyone who just wants to create simple invoices, receipts, certificates or any document (founders, ops teams, designers, marketers) who will never want to learn a language just to generate a document.
That gap became the entire idea: what if you could get Typst's speed without ever writing Typst? I started with a rough proof-of-concept, a visual, drag-and-drop builder that quietly compiled down to Typst under the hood. I created an MVP which actually worked, So I decided to make it as a real product.
That's Cellystial: a drag-and-drop visual builder which generates template and a fast REST API to create PDFs in milliseconds. So you can start generating production PDF in less than 5 minutes.
About Cellystial on Product Hunt
“Fast PDF document generation SaaS platform.”
Cellystial was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #37 on the daily leaderboard. Generate pixel-perfect invoices, receipts & contracts in milliseconds with a drag-and-drop template builder and a blazing-fast PDF generation API.
On the analytics side, Cellystial competes within Productivity, API and Developer Tools — topics that collectively have 1.3M followers on Product Hunt. The dashboard above tracks how Cellystial performed against the three products that launched closest to it on the same day.
Who hunted Cellystial?
Cellystial was hunted by Ashish Kushwaha. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Cellystial including community comment highlights and product details, visit the product overview.
Ashish Kushwaha