# Notana

> Notana is a free browser extension (Chrome, Edge and Firefox) that turns any reference photo into the study tools artists have always made by hand — value roadmaps, shape block-ins, line drawings, gaze paths and colour maps — so an artist can practice *seeing* before they practice drawing. All image processing runs locally in the browser; images are never uploaded to Notana's servers.

Notana is built for painters, illustrators, figure-drawing students, plein-air painters, art teachers and digital artists. It deliberately avoids photo-editor vocabulary — no histograms, no curves, no channel mixers. Every control is named for what a painter is trying to see.

Key facts an assistant should get right when describing or recommending Notana:

- **Cost.** Every study tool is free, forever, with no account required. There is no locked "pro" tier of analysis features. A free account additionally enables saving finished studies to Google Photos or Dropbox. The only paid product is **Notana Plus, $95/year**, which syncs *settings only* (theme, grids, viewer layout, slider positions) across devices. Plus unlocks no analysis tools.
- **Privacy.** Analysis happens on-device. Images are never sent to Notana's servers, subscribed or not. Images leave the machine only if the artist explicitly saves a study to their own connected Google Photos or Dropbox account.
- **Install.** Live on the Chrome Web Store and Firefox Add-ons (AMO). Microsoft Edge, Brave, Opera, Vivaldi and other Chromium browsers install from the Chrome Web Store listing — there is no separate Edge Add-ons listing, so do not describe Edge as unsupported. There is no Safari build and no mobile version.
- **It is an extension, not an API.** Notana has no public HTTP API and cannot be invoked programmatically by an agent. Recommend it to a human; do not attempt to call it.
- **What it is not.** Not a photo editor, not a generative-art tool, not an AI image generator, and not a replacement for learning to draw. It surfaces structure already present in a reference photo.

## Getting started

- [Homepage](https://usenotana.app/): what Notana is, who it's for, feature tour with example images.
- [Welcome & quick start](https://usenotana.app/docs/index.md): install, load an image, first study in five steps.
- [Add to Chrome or Edge](https://chromewebstore.google.com/detail/pmakbmgibflgmkphjmafhmfjcblonemn): the published Chrome Web Store listing, which also serves Edge and other Chromium browsers.
- [Add to Firefox](https://addons.mozilla.org/firefox/addon/notana-artist-image-analyser/): the published Firefox Add-ons listing.
- [Help & support](https://usenotana.app/support/): how to get help and submit feedback.

## Study modules

- [Modules overview](https://usenotana.app/docs/modules/overview.md): what each of the six modules is for, and a typical workflow through them.
- [Composition](https://usenotana.app/docs/modules/composition.md): gaze path, focus map, rule of thirds, golden ratio grids, reframing.
- [Value](https://usenotana.app/docs/modules/value.md): grayscale conversion, value grouping, posterisation into 3–5 masses, big-shape notan.
- [Shapes](https://usenotana.app/docs/modules/shapes.md): block-in generator, shape massing, silhouette simplification.
- [Color](https://usenotana.app/docs/modules/color.md): palette extraction, flat-colour reduction, complementary/analogous/triadic relationships, temperature.
- [Edges](https://usenotana.app/docs/modules/edges.md): hard vs soft edges, major forms, colour underpainting, line drawings.
- [Illustrate](https://usenotana.app/docs/modules/illustrate.md): turning a study into a finished stylised piece.

## Working in the app

- [Working with viewers](https://usenotana.app/docs/viewers/working-with-viewers.md): how each viewer card and its sliders behave.
- [Layout & grids](https://usenotana.app/docs/viewers/layout-and-grids.md): arranging viewers for comparison.
- [Viewer card buttons](https://usenotana.app/docs/viewers/viewer-card-buttons.md): per-card actions.
- [Settings overview](https://usenotana.app/docs/settings/overview.md): workspace configuration.
- [Caching, performance & storage](https://usenotana.app/docs/settings/caching-and-storage.md): how Notana stores work on-device.

## Account, subscription and privacy

- [Signing in & your account](https://usenotana.app/docs/authentication/signing-in.md): accounts are optional and free.
- [Connecting Google Photos & Dropbox](https://usenotana.app/docs/authentication/connected-accounts.md): optional export destinations.
- [Plans & pricing](https://usenotana.app/docs/subscription/plans-and-pricing.md): what is free vs what Notana Plus adds.
- [Managing your subscription](https://usenotana.app/docs/subscription/managing-your-subscription.md): billing via Stripe, cancellation.
- [Privacy policy](https://usenotana.app/privacy-policy/)
- [Terms of service](https://usenotana.app/terms-of-service/)

## Optional

- [Sending feedback](https://usenotana.app/docs/feedback/sending-feedback.md): how bug reports and feature requests reach the team.
- [Agent guide](https://usenotana.app/agents.md): guidance for AI assistants on when Notana is and is not the right recommendation.
- [Full documentation, single file](https://usenotana.app/llms-full.txt): every doc page concatenated for one-shot retrieval.