Old and inaccurate scans
A drawing does not have to be perfectly straight or use exactly the same scale in both axes.
Measuring from drawings, photographs and cadastre
From a problematic source to usable measurements.
JustMeasure helps straighten, calibrate and measure scans, PDFs and photographs — and work directly with a georeferenced ČÚZK cadastral map and orthophoto. Everything runs in your browser, without an unnecessarily complex CAD workflow.
Photographs as source material
You can also work with photographs of documents, buildings or other source materials that need to be calibrated and measured.
Perspective and deformation
JustMeasure handles perspective distortion as well as more complex local deformation of the source material.
Two routes to the same goal
Straighten and calibrate drawings. Use cadastral geometry directly.
JustMeasure works with both image-based source materials and a georeferenced cadastral map. Each type follows its own natural workflow.
Drawings and photographsLoad. Straighten. Calibrate. Measure.
1
Load
PDF, JPG or PNG. One source or multiple drawings in tabs.
→
2
Straighten
Perspective, rotation, crop and, when needed, advanced deformation corrections.
→
3
Calibrate
Use known dimensions as references and build a calibration that matches the source.
→
4
Measure
Lengths, areas, angles, arcs, circles and other geometric values you need.
ČÚZK cadastreIdentify the property. Load the map. Select geometry. Convert it to an area.
1
Identify the property
Search an address or area in RÚIAN, or select a property directly from the map.
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2
Load cadastre
A georeferenced tab is created with parcels, buildings and optional ČÚZK orthophoto.
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3
Select geometry
Use Select to choose a parcel or building directly in the map.
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4
Convert to area
Turn the geometry into a normal editable area measurement. No calibration is required.
ČÚZK cadastre
From an address to measurable geometry without redrawing.
Identify the property, load a georeferenced cadastral map and work directly with parcels and buildings. The cadastral layer can be combined with ČÚZK orthophoto and used as another technical source in the project.
RÚIAN + KN dataAddress, municipality, cadastral area, building object, title sheet and parcels in one place.
Cadastre + orthophotoSwitch between the cadastral map, orthophoto or their combination and adjust the background opacity.
Geometry snappingMeasurement and helper points can snap directly to parcel and building boundaries.
Convert geometry in one stepTurn a selected parcel or building into a normal editable area measurement, including parcels with interior holes.
Property and Cadastre features are included in both Basic and PRO.
Selected features
From cadastral data to distorted photographed drawings.
JustMeasure combines everyday measuring with tools for situations where the source is imperfect — or is not an image-based drawing at all.
ČÚZK cadastre
RÚIAN, KN data, a georeferenced cadastral map, orthophoto and conversion of parcels or buildings into area measurements.
Perspective correction
Straighten photographed or distorted sources using reference lines and corners.
Calibration for real-world sources
Multiple references, independent X/Y calibration and, in PRO, general references in any direction with deviation diagnostics.
Mesh Warp
Correct local deformation in warped, folded or obliquely photographed source materials.
MultiStitch
Combine multiple photographs or drawing fragments into one source directly in the main workspace.
Groups and calculations
Organize measurements into coloured groups and create named sums and differences of areas, perimeters or lengths.
Real-world examples
From a cadastral map to a photographed drawing.
JustMeasure works with real technical source materials — cadastral geometry, scans and photographs. Current 5.2 interface screenshots are being prepared for v19.
For whom
For technical work with real-world source materials.
JustMeasure is for people who need to obtain usable dimensions from available source materials without a lengthy workaround.
Energy specialistsOld project documentation, scans, cadastral maps and as-built documentation.
Energy advisorsQuickly obtain dimensions and areas from available source materials when designing energy-saving measures.
Renovation Passport preparers for NZÚWork with archived documentation, scans and photographs when an accurate digital source is not available.
Designers and architectsQuickly prepare source material before redrawing or further processing.
Cost estimators and project plannersRead dimensions and areas even when a clean digital drawing is not available.
Field techniciansPhotographs and image-based source materials that need to be calibrated and measured.
Who is behind JustMeasure
Built from real technical practice.
JustMeasure is developed by Jan Richter, an energy specialist with more than 10 years of professional experience.
The application grew out of a practical need to work with old drawings, inaccurate scans and photographs from which usable dimensions had to be obtained for further professional work.
That is why JustMeasure is not a general graphics editor or a CAD replacement. It focuses on a specific technical problem: preparing and measuring real-world source material — from an old scan or photograph to cadastral geometry.
Privacy and speed
Your drawings and projects stay with you.
Image source materials and .justm projects are processed locally in your browser and are not uploaded to the JustMeasure server. Property and Cadastre features use public ČÚZK services; when KN data is retrieved, the selected identifier passes through the JustMeasure licensing backend to the ČÚZK KN REST API.
Drawings and photographs are not uploaded to the server.
No cloud storage of projects.
No user account required.
No advertising tracking.
Editions
30 days of PRO first. Then Basic or PRO.
The Trial unlocks every feature of the current PRO edition for 30 days, so you can test JustMeasure on real work.
30 days PRO
Trial
Free
Full PRO for 30 days
Try the complete JustMeasure experience including cadastre, Mesh Warp, MultiStitch and every PRO feature.
- All features of the current PRO
- ČÚZK cadastre and orthophoto
- Mesh Warp and MultiStitch
- General calibration, groups and PDF report
Basic
CZK 1,490
For standard measuring and cadastral work
Full-featured work with common drawings and photographs plus a georeferenced ČÚZK cadastral map.
- PDF / JPG / PNG
- Cadastral map, orthophoto and geometry conversion
- Perspective correction
- Calibration and measurement
PRO
CZK 4,990
For complex sources and advanced outputs
PRO extends Basic with tools for complex deformation, source stitching, general calibration, measurement organization and reports.
- Everything in Basic
- Mesh Warp and MultiStitch
- General calibration and diagnostics
- Measurement Groups and Group Calculations
- PDF reports and advanced image modes
Edition comparison
Basic vs. PRO
The Trial includes all features of the PRO edition for 30 days.
| Feature | Basic | PRO |
|---|---|---|
JPG, PNG, PDF, tabs and .justm projects | ✓ | ✓ |
| Property identification, RÚIAN, KN data and ČÚZK cadastral map | ✓ | ✓ |
| ČÚZK orthophoto and snapping to cadastral geometry | ✓ | ✓ |
| Conversion of parcels and buildings to area measurements | ✓ | ✓ |
| Crop, rotation and perspective correction | ✓ | ✓ |
| Calibration along the X and Y axes | ✓ | ✓ |
| General calibration in any direction | — | ✓ |
| Measurement of lengths, areas, angles, arcs and circles | ✓ | ✓ |
| Comparison grid – straightening deformed source materials | — | ✓ |
| MultiStitch – combining a source from multiple parts | — | ✓ |
| Measurement groups + totals and calculations | — | ✓ |
| PDF measurement report | — | ✓ |
Show full comparison
| Image modes – black and white, high contrast | — | ✓ |
| Pixel grid | — | ✓ |
| Lens distortion correction | ✓ | ✓ |
| Calibration diagnostics and deviation checks | — | ✓ |
| Helper geometry | ✓ | ✓ |
| Ortho mode | ✓ | ✓ |
| Local file processing without uploading to a server | ✓ | ✓ |
Personal help getting started
15 minutes with your own source material.
Have an active Trial and are not sure about the right workflow? Leave your phone number and email. I will get back to you and arrange a short video call where we can work through your drawing or photograph directly in JustMeasure.
Your own source material
A concrete workflow
No generic sales presentation
Questions & answers
Frequently asked questions about JustMeasure.
Essential answers before you start. Detailed guides and a more complete Q&A will be available in JustMeasure Help.
Go to Help →What is JustMeasure?
JustMeasure is a tool for working with drawings, photographs and cadastral source materials from which you need dimensions and areas. Image sources can be straightened and calibrated; georeferenced cadastral data can be used directly with parcels and buildings.
Can JustMeasure work with Czech cadastral data?
Yes. Property and Cadastre features are included in both Basic and PRO. JustMeasure can search through RÚIAN, retrieve KN data, load a georeferenced ČÚZK cadastral map and orthophoto, snap to cadastral geometry and convert a parcel or building into an area measurement.
Can JustMeasure handle a distorted or poorly scanned drawing?
Yes. The source can be rotated, corrected for perspective and calibrated using known dimensions. The PRO edition also includes Mesh Warp and other tools for more complex source deformations.
How accurate are the measurements?
Accuracy depends primarily on the quality of the source material, correct straightening and the quality of calibration. That is why we do not claim a universal percentage accuracy that would not be realistic for every source.
Do I need to install anything?
No. JustMeasure runs directly in a web browser at app.justmeasure.cz.
What is the difference between Basic and PRO?
Basic includes the complete core toolset for source preparation, cadastral data, calibration and measurement. PRO adds Mesh Warp, MultiStitch, general calibration, diagnostics, Measurement Groups and Group Calculations, PDF reports and other advanced features.
Can I try JustMeasure before buying it?
Yes. The Trial unlocks all features of the current PRO version for 30 days.
How many computers can I use one licence on?
One licence can be used on up to three devices, for example a work computer, a laptop and a home computer.
JustMeasure