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PlanInk — browser-based PDF markup and redlining software
Built for Outside Plant (OSP) Crews

Redline construction drawings.
Right from the truck.

PlanInk is built for cable and utility contractors who need to redline construction drawings and strand maps in the field — on a phone, tablet, or laptop, with no installs and no cloud uploads. Document installation changes as you work, and submit the redlined drawing straight through as your as-built.

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18
Annotation tools
100%
Browser-based
0
Cloud uploads
Built for cable & fiber crews
Built for the way cable crews actually work

Whether you're running Drop-Bury, Underground, Aerial, or Fulfillment — trenching, directional boring (HDD), microtrenching, or cable plowing — your construction drawings don't live on a desk. They live on a tailgate, a bucket truck, or a splice trailer with spotty signal, out in the Outside Plant (OSP). PlanInk works the same whether you're online or not, because your drawings never leave your device.

Redline Construction Drawings in Real Time

Mark completed footage, conduit and handhole locations, splice points and closures, and installation-method changes directly on construction drawings and strand maps with the Line and Measure tools — distances snap and recalculate live as you draw, so your redlines are an accurate record from the first mark.

Works With No Signal

PlanInk is a Progressive Web App — once a construction drawing is open, you can keep redlining with zero connectivity. No dead zones, no “waiting for upload” spinners in the field.

Nothing Leaves the Browser

Every redline happens client-side. No construction drawing, no job data, and no customer address ever touches a cloud server unless you choose to save it there yourself.

Everything you need
Everything you need, nothing you don't

A focused toolset built around what cable and utility crews actually redline in the field.

Why browser-based
Why crews choose browser-based over desktop-only tools

Heavy desktop markup software is built for the office. PlanInk is built for the field. There's nothing to install on a crew laptop, nothing to license per-machine, and no waiting to get back to the yard to open a file. If your crew is redlining construction drawings between job sites more often than at a desk, that difference matters every day, not just on rollout day.

Free trial
Start redlining your next construction drawing today

Enter your work email and we'll send a trial code within 1 business day. No credit card. No commitment.

No credit card. No commitment.

FAQ
Common questions from cable & utility crews
Yes. Once a construction drawing is loaded, PlanInk keeps working offline since it's a browser-based Progressive Web App — nothing depends on a live connection to redline or save a file.
Yes. PlanInk runs in any modern mobile browser, so each crew member can open, redline, and save their own copy of a construction drawing without installing anything or sharing a login.
Nowhere. PlanInk processes and renders PDFs entirely in your browser — construction drawings are never uploaded to a server unless you explicitly choose to save or export them somewhere yourself.
Yes. PlanInk is built for large-format utility and cable construction drawings, with tile-based rendering so big, detailed maps stay fast and responsive even on a phone.
Yes. A redline made in PlanInk documents installation changes as they happen in the field — save it out and it's ready to submit as your as-built, no re-drawing from memory or a stack of paper markups required.
Yes. PlanInk redlines any construction drawing you can open as a PDF, whether it's a Hybrid Fiber-Coaxial (HFC) hardline route, an FTTH/FTTP/FTTN build, or a traditional copper or conduit plan — the tools aren't tied to one network architecture.
Yes. Use the Line and Point tools to mark splice closure locations and splice points directly on the strand map, with distances that snap and recalculate as you place them.
Yes — start with a free trial, or grab a 2-Day Professional Pass for $5 if you just need full tool access to get through one job or one construction drawing.