Overlay

Reusable templates for Google Docs & Sheets. Highlight text, make it a variable — edit once, every occurrence updates. Free.

Overlay turns a Google Doc or Sheet you already have into a reusable template — without leaving the editor or rewriting your file. Send the same proposal to different clients? The client name appears eleven times, the price four times. Instead of find-and-replace, turn each into a variable once, then change it in one place — every occurrence updates in the real document, instantly. HOW IT WORKS 1. Select text (or a cell in Sheets) and copy it with Cmd/Ctrl+C 2. Click "Create Variable" and give it a name 3. Edit the value in the sidebar — every occurrence updates live WHY NOT FIND AND REPLACE? It's easy to miss an occurrence, and nothing remembers which values change next time. Overlay keeps that structure with the file, so the document stays reusable. WHAT'S INCLUDED • Google Docs and Google Sheets, including multi-tab documents • Unlimited variables and documents — no caps • Colour-coded highlighting for every variable • Sheets: bind to one cell, one sheet, or the whole spreadsheet • Clean PDF and Word export • Built-in undo • Free, no account required PRIVACY Overlay uses Google's narrowest per-file permission. You confirm each file once, and Overlay can only ever open the files you choose — the rest of your Drive stays private. Your document content is never sent to our servers. Questions or ideas: https://www.overlaylab.co/support