Hi everyone

I work in GIS, and for years I've watched colleagues in other departments (marketing, finance, research) struggle with QGIS/ArcGIS or Tableau just to make one simple map for a report. They just have a spreadsheet and need a choropleth map. It shouldn't be that hard.

So, over the last few months, I built Sublimap: a browser-based tool that turns CSV or Excel files into thematic maps in about 30 seconds. No install, no signup, no GIS knowledge required.

What you can do

• Upload a CSV/XLSX with a geo identifier (ISO codes, country names, NUTS codes) and one or multiple value column.
• Auto-detects the map level in case of GISCO data.
• Maps cover the world, continents, and almost all countries with official projections and first-level administrative divisions.
• Choose palettes (Viridis, Cividis, etc.).
• 6 data clasifications: Quantiles, Equal intervals, Manual intervals, Natural breaks, continues scale and standar deviation. all can choose the number of breaks
• You can modify legend title and legend columns, choose between boxes or bar legend
• Other custom options as border colors and ticknes, title.
• Export PNG/JPG/SVG with the legend baked in.
• Manual mode: click on countries to paint categories if you don't have data. Also can find the area in case you do'tk nof where is or ti is small
• Project files: save your work as a .json file to share and edit collaboratively.
• Data transparency: each map includes the projection EPSG and data source for proper citation.
• 100% in the browser — your data never leaves your machine.

What it doesn't do (yet):

• No custom shapefile uploads.
• No live data connections.

I'm not trying to replace GIS software like QGIS or ArcGIS. This is for the 80% of cases where someone just needs a map for a report and doesn't want to learn a full GIS stack.

The tool is called Sublimap and it's live here: https://sublimap.eu

I'm at a point where I'm getting some traction, but I'm really looking for feedback from other makers. What do you think of the UX? Is anything confusing or missing? What features would you like me to add or improve?

For the next steps, I want to:

• Add more regional divisions for countries
• Add local administrative boundaries and ZIP codes
• Add an option to upload a CSV or Excel with coordinates and plot them as points on the map
• Allow users to share their creations inside the app with a user account

His head is Czechia, his left arm is the Carpathians, his right arm is the Alps (reaching out to Monaco), and the Balkans is his torso. Greece might be one of his legs?

I distorted it by around 20 to 25 degrees. So not super easy but also not impossible!

Here is the link if you wanna play todays daily challenge: https://visitwhale.com/impostor

Have no idea what subreddit to post this in, coffee stain in a mug

I noticed there was a problem while loading the image , should work fine now
(reminder : this is only the cities i know)

Hint: Its in america...

If you wanna play some more rounds here is the link: https://visitwhale.com/city-angle

with population. Mercator projection by Daniel R. Strebe. Also, for SWW octant population is closer to 700k, not 800k

Hint: It has to do with population/language

Calling codes around the world

I distorted the angle of one of the decoy cities! Can you spot it? Leave your guess in the comments.

Everything is based on the mercator projection btw if you wanna play some more rounds check it out here: https://visitwhale.com/impostor/

Guess the european city by its angles to other cities!

If you wanna play some more rounds check it out here: https://visitwhale.com/city-angle