Contour Digitizer
v0.1.0 Beta · live

Extract values from any contour plot in seconds.

Upload a screenshot from ANSYS, Abaqus, Fluent, FEMAP — or any contour image. Sample points, draw probe lines, measure regions. Export clean CSV. No re-running the simulation.

LEGEND
★ Define Legend
0.210.190.160.140.120.090.070.050.020
MAX
MIN
Total Deflection Unit: in Time: 1 11/23/2025 12:32 PM 0.21 0.16 0.09 0.02 0.00 4 0.02 3 0.09 2 0.16 1 0.21 X Y Z 0.0 1.0 2.0 3.0 (in)
SAMPLED POINTS
Point ID Deflection (in)
1
0.21
2
0.16
3
0.09
4
0.02
Features

Built by engineers, for engineers.

Every interaction is designed around the one thing you actually want — numbers you can drop straight into a report or spreadsheet.

Point sampling

Click anywhere on the plot to log a precise scalar value.

Line probes

Drag a line across the plot and get min, max, average, and σ along the length.

Region statistics

Box-select an area to compute min/max/avg. Perfect for stress concentration zones.

Legend Detection

Box-select the legend bar to automatically extract legend color bands. Works across all software — ANSYS, Fluent, Matlab, or custom plots.

💾

Save & resume sessions

Export and reload sessions with one click. Resume your work later, or share session files with teammates to verify results.

Clean exports

CSV, tab-delimited, Excel, and annotated PNGs. Every file includes metadata: source, legend, units, timestamp.

Workflow

From screenshot to spreadsheet in four steps.

Upload your plot

Drop a PNG or JPG. The image never leaves your browser.

⇪ drop zone

Confirm the legend

Auto-detected from the image, or draw a box around the color bar to define it manually.

Sample with any tool

Point, line, region, or hover. Press 1·2·3·4 to switch.

● ╱ ▢ ✛

Export anywhere

Copy as CSV, download XLSX, or export an annotated PNG.

↓ .csv .xlsx .png
Use cases

Wherever a colormap meets a scalar field.

Structural FEA

Read von Mises, principal stress, or plastic strain from any ANSYS, Abaqus, or Nastran post-processor screenshot. Extract results without re-running the model.

stressstraindeflection

CFD post-processing

Pull velocity, pressure, or temperature off contours from Fluent, OpenFOAM, Star-CCM+. Line probes give cross-section profiles in one drag.

velocitypressureTurbulence Kinetic Energy

Thermal & Heat Transfer

Extract temperature fields, heat flux, or thermal gradients from ANSYS, COMSOL, or Star-CCM+ screenshots. Measure hotspots without exporting full field data.

temperatureheat fluxvelocity

Published Figures & Data Recovery

Digitize contour plots from papers, reports, or presentations when the source data isn't shared. Matlab, acoustics, topography, or any rainbow-mapped field.

matlabacousticstopography

Ready to stop squinting at images?

Try the free web version now. A dedicated local desktop app is under construction and launching soon.

Open the app →