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Best LibreOffice Extensions and Templates for Windows

Boost your productivity with curated add‑ons and templates. Learn how to install .oxt extensions and import templates on Windows 10/11. Need LibreOffice first? Download the official MSI below.

Get LibreOffice (MSI, 64‑bit): LibreOffice_26.2.2_Win_x86-64.msi • Size: —

Top extensions (Windows)

Grammar & spell checker

Advanced proofreading for Writer documents. Integrates into Tools → Extension Manager.

Number/text tools

Utilities for Calc: number-to-words, better formatting, and data cleanup helpers.

Diagram & flowcharts

Extra stencils and connectors for Draw/Impress to build diagrams faster.

Template manager helpers

Quality-of-life add-ons to organize, search and tag templates inside LibreOffice.

Math & science

Better equation snippets, chemistry notations and science-focused styles.

Accessibility aids

Contrast and readability tools to create accessible documents and slides.

Tip: prefer well‑maintained extensions with recent updates and clear documentation.

Popular templates

  • Resumes/CVs (modern and ATS‑friendly Writer templates)
  • Invoices and quotes (Calc templates with formulas)
  • Budgets and planners (monthly/annual trackers)
  • Presentations (clean Impress decks for business and education)
  • Reports and letters (Writer styles for consistent typography)

How to install extensions (.oxt)

  1. Open LibreOffice on Windows.
  2. Go to Tools → Extension Manager → Add…
  3. Select the .oxt file → Accept the license → Restart LibreOffice.
  4. Manage or disable add‑ons later in Extension Manager.

How to import templates

  1. Open LibreOffice → File → Templates → Manage.
  2. Click Import → pick your .ott/.ots/.otp file.
  3. Assign a category and confirm. Your template appears in the gallery.
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