A topographic map generator turns raw elevation data into the curved contour lines you see on hiking maps — except here you control the colour, the line weight and the export format. Instead of redrawing terrain by hand in Illustrator, you draw a box on a map and the contours are traced for you from real satellite elevation. This guide shows how to generate topographic contour lines for any location, how to pick the right contour interval, and how to export them ready for design, print or fabrication.
What a topographic map generator actually does
Every point on Earth has an elevation. A topographic map generator reads that elevation across an area, finds all the points that sit at the same height — say every 10 metres — and joins them into a single line. Stack those lines and you get the familiar nested rings that describe mountains, valleys and coastlines. (If you want the theory behind how to read those lines, see topographic contour lines explained.)
TopoLines does this server-side from real digital elevation models (SRTM 30 m for quick drafts, 10 m GeoTIFF for fine detail), so the topographic lines you get match the actual terrain rather than a stylised approximation.
How to generate topographic contour lines, step by step
- Pick a place. Search for a town, mountain range or coastline, or just pan the map until the terrain you want is in view.
- Draw a zone. Drag a rectangle over the area. The generator shows the area in km² live so you stay inside the free limit (or scale up on Pro).
- Set the contour interval. A tight interval (5–10 m) gives dense, detailed lines; a wide interval gives a calm, minimal look. This is the single biggest control over the final feel.
- Style the lines. Choose a solid colour or an elevation gradient that colours each contour by its height, set the stroke width, and optionally add taper so lines thin out with altitude.
- Export. Download print-ready SVG (vector, grouped by elevation) or HD PNG — or copy straight to your clipboard and paste into Figma.
The whole loop takes under a minute once you know the area you want.
Choosing the right contour interval
The contour interval is the height gap between adjacent lines, and it’s the control that most changes the result:
- Tight (5–10 m) — dense, intricate lines. Best for steep, dramatic terrain and detailed art where you want the texture of the mountain to show.
- Medium (20–50 m) — a balanced, legible map. A safe default for most posters.
- Wide (100 m+) — only the major landforms survive. Calm, minimal, and ideal for flat regions where a tight interval would produce too few lines or, on big mountains, an unreadable tangle.
A good rule of thumb: match the interval to the relief. Flat coastal areas need a tight interval to show anything; tall ranges need a wide one to stay readable.
Trace topographic contours as vector, not pixels
The reason designers reach for a generator instead of a screenshot is the vector output. When you trace topographic contours as SVG, every line is an editable curve grouped by elevation band. You can recolour a single band, change stroke widths globally, or feed the paths into a plotter or laser cutter. A flattened PNG can’t do any of that. See exporting contours as SVG and contour map SVG for the full breakdown, including when to pick SVG over PNG for print or laser cutting.
How accurate are the contour lines?
Accuracy comes down to the elevation source:
- Standard (30 m SRTM) — free, fast, great for posters and stylised art where exact metre-level accuracy doesn’t matter.
- High-res (10 m GeoTIFF) — Pro, noticeably finer detail in ridgelines and drainages. Worth it when the terrain itself is the subject. More on this in high-resolution terrain.
Why use a generator instead of GIS software
You can produce contours in QGIS or ArcGIS, but for design work it’s overkill: you have to source a DEM, run a contour tool, fix topology, then export and restyle in a vector editor. A dedicated topographic map generator collapses all of that into one screen — pick a place, set an interval, export clean styled vectors — with no installs, no data wrangling and no licence. The trade-off is that GIS gives you full analytical control; a generator gives you a finished, good-looking result fast.
What people use generated topographic lines for
- Poster and album-cover art built from a meaningful location.
- Brand systems and packaging that need a custom terrain motif.
- Wedding and event maps tied to a specific place.
- Architecture and landscape site studies.
- Laser-cut and CNC layered terrain models.
FAQ
Is there a free topographic map generator? Yes — TopoLines is free for a single zone up to 100 km² with 30 m terrain and PNG export, no account needed. Vector SVG, HD PNG and 10 m terrain are Pro.
Can I generate contour lines as SVG? Yes. SVG export gives clean vector curves grouped by elevation, ready for Figma, Illustrator or a plotter.
What contour interval should I use? Match it to the terrain: a tight 5–10 m interval for flat or detailed areas, a wide 100 m+ interval for tall mountains so the map stays readable.
Where does the elevation data come from? Open digital elevation models — SRTM at 30 m and higher-resolution 10 m GeoTIFF for Pro exports.
Do I need GIS software like QGIS? No. The generator handles the elevation processing and vector output for you, so you skip the DEM sourcing and topology cleanup that GIS workflows require.
Ready to trace your first map? Open the topographic map generator →