LightningPDF
HTML to PDF API — Go-native engine, under 100ms
What it does
Tired of Puppeteer memory leaks and wkhtmltopdf breaking your CSS? LightningPDF is a REST API that generates PDFs from HTML, CSS, and Markdown. What makes it different: • Dual engine — Go-native renders simple docs in <100ms, Chromium handles complex layouts • Visual template designer with live preview • Batch API, async jobs, and webhook notifications • Tailwind CSS built-in • Free tier — 50 PDFs/month, no credit card Works with any language: Python, Node.js, Go, PHP, cURL.
Does the same job
all alternatives →
- PJPdf.js Express – PDF annotation, e-signatures, and form filling2020 · ▲334
Hi HN, Nick here. We're super excited to officially launch PDF.js Express [1]. PDF.js Express wraps a modern React UI around the PDF.js rendering engine to enable PDF annotation, form filling, and signing inside your web app. We've also made some improvements to PDF.js text search, and taken a different approach to how the viewer uses the PDF.js rendering API, resulting in sharp graphics at any zoom magnification [2]. Based on our research, more than 70% of those who try to implement these features on top of PDF.js find it too difficult or time-intensive [3]. For those who are successful,…

- TAThePDFApi, a Chrome Based PDF Generation API Hosted on AWS2018 · ▲41
Hello HN! It kept surprising me how much of a hassle it is to generate a PDF with decent HTML5 rendering from my SaaS apps. I tried several free libs and APIs but ended up with botched rendering a lot of times. So I set out to simplify this chore by creating an AWS hosted HTML to PDF conversion API that's based on Chrome. This API will allow a dev to just send the HTML to our API and get a PDF in response without having to worry about running and managing Chrome somewhere in their infra. I just finished the first version of my landing page and hosted pdf generation API…


More dev tools this month
the category →



The first open-source price index for GPU compute
Dev tools · 10d ago · getcomputable.com

Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com

OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 2d ago · opentrailpaper.com
Launched alongside, March 2026
the whole month →

Switch from ChatGPT to Claude with import memory feature
AI · Mar 2026 · claude.com


