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AlphaSurfalize is in active development. Features and results may change at any time.

ISO 25178 · Surface Metrology

Surface analysis,
in the browser.

Full topography analysis that runs entirely on your own computer: nothing is uploaded, nothing is stored on a server. Every parameter and operation is validated against analytic soft gauges.

Read documentation
100% local processing
Your data never leaves your machine. No upload, no account, no server-side storage.
Validated against soft gauges
More than 500 test cases on analytic surfaces with exactly known results, from roughness parameters to filters and form removal.
View validation results
3D surface topography
250.0 µm
250.0 µm
Sa0.342 µm
Sq0.487 µm
Sz3.21 µm
Sdr8.4 %
Capabilities
01

Interactive visualisation

False-colour height maps, interactive 3D surface rendering, power spectral density, autocorrelation and Abbott–Firestone curves — rendered live in the browser.

02

Non-destructive work tree

Chain operators in a branching work tree. Update the current plots as you preprocess, or spawn a new result for each step — originals are always preserved.

03

Full operator set

Levelling, three-point levelling, polynomial detrending, Gaussian filtering, outlier removal, gap filling, masking, cropping and rotation — chainable in any order.

04

Geometry & volume

Measure distances, angles and diameters, fit circles and lines to detected edges, and compute the material and void volume over any rectangle, circle or polygon.

05

Cavity arrays

Detect every cavity in a textured or etched array automatically, measure depth, volume and bottom roughness per cavity, and map any result across rows and columns.

06

Batch & reports

Run one workflow across many files and export parameter tables as CSV and plots as print-resolution PNG, or save the whole view as a multi-page PDF report.

Parameters

Every ISO 25178 areal parameter

Height, hybrid, spatial, functional, feature and volume parameters computed directly from surface topography per ISO 25178-2 and validated against reference software — including the feature parameters (new). Full ISO 21920 profile (R) parameters are available on any extracted profile.

View full parameter list
Sa
Sq
Sz
Sp
Sv
Ssk
Sku
Sdr
Sdq
Sal
Str
Sk
Spk
Svk
Smr1
Smr2
Sxp
Spd
Svd
Spc
Svc
S5p
S5v
S10z
Vmp
Vmc
Vvv
Vvc
Workflow
01
Load

Drop your topography file into the browser. All processing happens locally.

02
Operate

Apply operators from the ribbon — update the current plots in place, or branch off a new result.

03
Analyse

Select parameters and compute. View height maps, Abbott–Firestone and PSD plots.

04
Export

Run batch analysis across multiple files and export a full parameter table as CSV.

Supported formats
.sur.vk3.vk4.vk6.vk7 .opd.plu.plux.al3d.lext .nms.oir.os3d.sdf.sflz .tmd.x3p.zmg.zon.dat .fits.gwy.hdat.xyz

Ready to analyse your surfaces?

No installation required. Runs entirely in your browser. Your data never leaves your machine.

Drop a topography file or click to browse

.sur · .vk4 · .opd · .xyz · .sdf · and more

Columns 2 Drag the empty canvas or middle-drag to pan · wheel / shift-wheel to scroll
Workflow
File metadata
Surfalize · Surface Topography Analysis

A browser-based surface-metrology analyzer implementing the ISO 25178 areal and ISO 21920 profile parameter sets.

Powered by a pure-JavaScript port of the surfalize library — every computation runs client-side in your browser. No server, no installation, and your data never leaves your machine.

Batch
Load files

Drop multiple topography files or click to browse

Hold Ctrl/Cmd to select multiple files  ·  .sur · .vk4 · .opd · .xyz · and more

Workflow to replay —
Click a chip to export that panel for every file. A pinned colour range is reused across files so the images stay comparable.
Results