# tessera v0.3.4 - Table of Contents

> DZI deep-zoom + progressive-resolution layer for Fresco image viewers in Phoenix. Generate DZI tile pyramids from images via ImageMagick; render them as a Fresco peer layer that swaps raster resolutions on zoom and streams DZI tiles for deep zoom on gigapixel images.

## Pages

- [Tessera](readme.md)
- [Changelog](changelog.md)
- [LICENSE](license.md)

## Modules

- [Tessera](Tessera.md): Tessera is the DZI deep-zoom + multi-layer progressive-quality layer
for [Fresco](https://hex.pm/packages/fresco)-based image viewers in
Phoenix.
- [Tessera.Layer](Tessera.Layer.md): Attaches Tessera's progressive-resolution + DZI deep-zoom behavior to a
Fresco viewer or canvas by id.
- [Tessera.Storage](Tessera.Storage.md): Write-only storage abstraction for tile output.
- [Tessera.Storage.Local](Tessera.Storage.Local.md): Default `Tessera.Storage` implementation that copies tiles into a
caller-supplied root directory on the local filesystem.
- [Tessera.TileGenerator](Tessera.TileGenerator.md): Generates DZI (Deep Zoom Image) output from input images by shelling out
to ImageMagick.