We forge small tools with old‑world precision.
Rune Tech builds focused, single-purpose software — APIs and utilities cut clean enough to trust on day one. No sprawl, no bloat: each product does one thing, built to outlast the trend that inspired it.
What we've built so far
Small on purpose. Each product ships as a standalone API — pay for what you use, cancel any time.
PDF Toolkit API
Merge, split, compress, and rasterize PDFs behind one clean REST API. Four endpoints that do exactly what they say — no OCR, no e-signing, no bloat.
Free: 100 ops/mo, no card · Starter $9/mo · Pro $29/mo · Scale $99/mo
curl -X POST https://pdf-toolkit-api.fly.dev/v1/merge \
-H "x-api-key: YOUR_KEY" \
-F "files=@a.pdf" -F "files=@b.pdf"Image Optimization API
Resize, convert, compress, and smart-crop images behind one clean REST API. Billed by MB processed, not a confusing credit system.
Free: 100MB/mo, no card · Starter $9/mo · Pro $29/mo · VIP $99/mo unlimited
curl -X POST https://image-optimization-api.fly.dev/v1/resize \
-H "x-api-key: YOUR_KEY" \
-F "file=@photo.jpg" -F "width=800"Frequently asked
What is Rune Tech?
Rune Tech builds small, single-purpose software tools — currently APIs — designed to do one job well instead of sprawling into an all-in-one platform.
Who is behind Rune Tech?
Rune Tech is built and run by Jean-Eric Espiegle, a solo developer building the tools they wished already existed. More on the About page.
What products does Rune Tech have?
PDF Toolkit API (merge, split, compress, and rasterize PDFs) and Image Optimization API (resize, convert, compress, and smart-crop images), each a standalone REST API with a free tier and no card required to start.
How do I get in touch?
Use the inquiry form below, or email inquiries@rune-tech.org directly. Every message is read and replied to personally, usually within one or two working days.
Will there be more products?
Yes. Each new tool follows the same rule: small, focused, and built to outlast the trend that inspired it. The next one is already being drawn up.
Have something in mind?
Tell us what you're building, or what's missing from your stack. We read every inquiry ourselves and reply from a real inbox, not a ticket queue.
Usually within one or two working days.