GIS ecosystem

The QGIS ecosystem gathers:

• Mobile applications > QField & Mergin
• A processing engine to run algs > QGIS Processing
• A GIS Server > QGIS Server

QGIS Server

• Extensible with Python plugins
• Additional requests: GetPrint, GetLegendGraphics as JSON, etc

Lizmap Web Client uses the power of QGIS Server to bring maps in your browser

Lizmap Web Client

Prepare your projects on QGIS desktop / publish them with Lizmap

• FREE: opensource > Mozilla Public Licence (MPL 2.0)
• SIMPLE: Generates web maps for any QGIS project - No Code web app publication
• SECURE:
  • acts as a Proxy to QGIS Server
  • has a Web admin panel to manage users, rights, configurations
• POWERFUL:
  • many features and tools are available: editing, printing, attribute table, search, spatial filter, etc.
  • extensible with JavaScript or Modules
• MATURE 13 years of active development in QGIS Server & Lizmap Web Client

QGIS & Lizmap Web Client

Lizmap Web Client - some key features

• Manage rights on repositories, projects, layers, features, tools
• Rich editing forms for PostgreSQL layers / expressions for constraints
• Printing: QGIS print layout / Feature-based atlas PDF export
• Dataviz - show charts based on your data (pie, bar charts)
• QGIS relations: parent & child features / cascading filter

QGIS Lizmap extension - An overview

The Lizmap extension allows:

• to easily configure the QGIS project to publish,
• to choose which tools must be activated in your published map:

QGIS Lizmap extension - project validation

A growing set of validity rules

• security: PostgreSQL SSL connection, services
• performance: trusted project, estimated metadata, provider geometry, simplification, raster pyramids
• good practices: primary keys, needed indexes
• issues prevention: duplicated layers, proprietary format (ECW)

Thanks to PyQGIS, which allow a fine control of the workflow, close to the data

Current roadmap

• Branch 3.8
  • 3.8.0, September 2024 for QGIS UC 2024 in Brastislava
  • 3.8.10 May 2025, latest release
• Branch 3.9
  • 3.9.0-RC3 Feature freeze in May 2025
  • 3.9.0 June 2025 for this QGIS UC
• Branch 3.10
  • 3.10.0 started for new features

Similar to QGIS.org release schedule, monthly releases with bugfix :

• Compared to one year ago, less overlap between branches now
• https://github.com/3liz/lizmap-web-client/tags
• https://www.qgis.org/resources/roadmap/#release-schedule

Please, do not stay on .0 version (or low number of bugfix), for any software !
and for plugins as well, the user must do them from time to time

2024 - Lizmap 3.8 features

• Render all the checked layers as a single image
• New management of the N to M relations data editor
• Ability to display specific layer features at startup when set in URL
• Improvement on the landing page content (logged and not logged user)
• Tooltip feature when hovering the map: allow to build rich content with QGIS expressions
• Popup: add toolbar for child features in the compact table view
• Data editing - Improve snapping functionalities
• New web component lizmap-features-table to display a compact list of features as a table
• A big thank to Faunalia for your contributions to this version

The new compact list of features

• a reusable component which shows a compact list of layer features
• 3.8: available only for user-defined HTML popup
• will be used by default in identify results (popup) in 3.9

The new compact list of features

• QGIS Display expression is used by default for line heading

New in 3.9:

• QGIS Expressions can be added to create multiple "virtual" columns.
• Due to the powerness of QGIS Expressions written on the "client side", a allowed list of expressions can be set, or the not allowed is returned (new in 3.9)

Lizmap 3.8 : relations management improvements

Very useful when you have a relation between a parent layer (ex: roads) and a child layer (ex: road works)

• You can now easily create a new child feature from the parent information panel
• The parent editing form respects the QGIS Drag&drop form layout

Lizmap 3.8 : Improve PostgreSQL actions

Lizmap actions: run specific PostgreSQL queries and display results :

• new project and layer contexts / Run an action programmatically with JavaScript

In 3.9, an input geometry drawn by the user can be added

Quick overview Lizmap 3.9

• Drawing : Circular geometry measurement on draw, contribution from Faunalia
• Import and export drawing with FlatGeobuf
• Under the hood
  • performance about reading the QGIS project
  • Eslint, Styleline, Rector : code analysis and linting tools
  • Ongoing work to improve JavaScript documentation with OpenLayers etc
  • API documentation https://docs.3liz.org/lizmap-web-client/

REST API

• Latest releases from May, June 2025
• Perform some HTTP GET, PUT or DELETE requests
• Manage Lizmap repositories and their rights
• Metadata information from QGIS requests
• More tight integration from the QGIS Desktop plugin to come, step by step !

Contributions from Néo Garaix

Presentation module - Tell a story with Lizmap

• Create one or more presentation inside your maps
• Create slides with rich text and medias (images or video)
• Each slide can zoom to a specific area with a set of active layers

MapBuilder

• Be able to combine layers from different QGIS projects, on the web browser only, without being a GIS technicians with QGIS and the need to publish a "new" QGIS project project
• A lot of work done recently :
  • filter by extent
  • filter by keywords
  • icon for the geometry type...
  • CSS overhaul...

PgRouting - Find your way

• Based on the amazing PgRouting extension for PostgreSQL
• The module adds routing tools which help the user to find its way
• The routing graph is based on your data, not on a online API

WPS module - Run processing algorithms

• The power of QGIS processing toolbox inside Lizmap
• Each map has its set of allowed algorithms or models
• Run the algorithm: choose input values (buffer size, area code, etc.)
• Results are displayed whenever the algs ends (asynchronous run)
• Download produced outputs (layers, reports, etc.)
• A lot of work is going to be done with the coming weeks, stay tuned !
  • UI Overhaul, CSS, move to OGC Processes...

Some side projects, under the hood of Lizmap

• Proj4Js will be replaced by Proj4Rs
  • Written in Rust Web Assembly
  • https://github.com/3liz/proj4rs
• Py-QGIS-Server
  • Better management of QGIS server processes (without Apache/Nginx)
  • https://docs.3liz.org/py-qgis-server/
  • It will be replaced by a total new project
  • QJazz, QGIS as a service
  • https://docs.3liz.org/qjazz/qjazz-server/

The future of Lizmap

• Generalize the use of the compact list of features
• Catch up with QGIS editing form capabilities
• Copy-paste geometries between tools (drawing, selection, identified feature)
• Always some work under the hood :
  • Bootstrap 5 migration
  • OpenLayers :
    • Remove the last part of OpenLayers 2
    • Since version 3.8, the OpenLayers 10 map is now on top
    • OpenLayers 2 : only editing, measure, geolocalisation
    • OpenLayers 10 : drawing, print, layers, baselayers, maptip...

The future of Lizmap

• Integrate some external modules into core ?
  • Presentations
  • PGrouting
  • Altiprofil, with COG support
• QGIS Authentication database, or other backend

The future of Lizmap

Routing specific requests to specific QGIS Server backend :

• PDF print requests → dedicated QGIS Server processess
• Sloweness of queries
• Manage cache per processus
• Readonly
• Not loading QGIS layouts if not needed
• Move attribute table export of layer to a QGIS processes API, asynchrone

Connect with our community !

• Organize online events to meet users and developers
• Gather user needs and maintain a roadmap with priorities
• Communicate more: transition from twitter to Mastodon & Linkedin, etc.

Translations

• Quick updates about the state of translation, as of begining of May 2025
• Top 10 (with English, of course)

Thank you for your attention !

• Demos: https://demo.3liz.com
• Email: info@3liz.com / Mastodon: @LizmapForQgis - Coming soon
• Source code: https://github.com/3liz/
• Hosting: https://www.lizmap.com/en/plans.html