Installed

Welcome to Nivra

PDFs that finally respect your eyes. Dark, inverted, grayscale or high-contrast, rendered live on your device, with the original file never touched.

Smart Dark keeps pictures in full colour

Get set up in a minute

Three quick steps and Nivra is ready for everything you read.

  1. Open any PDF. Links and web addresses ending in .pdf open in Nivra automatically. Switch modes from the bar at the bottom of the viewer.
  2. Turn on local PDFs. Open your browser's extensions page, click Details on Nivra, then switch on Allow access to file URLs.
    Browsers block links to that page, so paste it into the address bar.
  3. Pin the icon. Click the puzzle-piece button in the toolbar and pin Nivra. Its popup holds the on/off switch; off hands PDFs back to your browser's own viewer.
TipPrefer not to change any setting? Click the Nivra icon and drop a PDF straight onto the popup. It works without file access.

What you get

Smart Dark

Inverts the page, not the photos. Charts and images stay true to colour.

Your look, remembered

Brightness, contrast and profiles, saved per site if you like.

Private by design

Everything runs locally. No accounts, no analytics, no uploads.

Help

Questions or something not working? Write to support@bhyresh.me. Read the privacy policy. Nivra on Microsoft Edge Add-ons; Firefox, Opera and Chrome coming soon.