Instant Raman is a free, open-source workstation for Raman spectroscopy data processing — entirely in your browser. Upload your spectra, get baseline-corrected plots, fitted peaks, and publication-ready figures in seconds. Your data never leaves your computer.
Designed for materials scientists, chemists, and spectroscopists who need rigorous, reproducible analysis without expensive commercial software.
Key Features
Adaptive SNIP baseline correction with configurable iterations
Levenberg-Marquardt multi-peak fitting with Gaussian, Lorentzian, and Voigt profiles
Bootstrap uncertainty quantification separating statistical and epistemic error
Publication-ready exports: 300-DPI PNG, vector SVG, Excel, and interactive HTML reports
100% client-side processing — zero server uploads, zero telemetry
InstantRaman
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About Instant Raman
I built this because I spent too much time as a research assistant doing the
same repetitive tasks after every Raman session. Getting from raw instrument data to a figure that actually
looks good in a paper took much longer than it should. I wanted something that just worked.
You can drop your spectra in and get your baseline corrected, peaks detected,
and figures generated immediately. You get PNG and SVG files for your paper, an Excel file with the processed
data, and an interactive report you can send to your supervisor. They can open it in any browser without
needing special software.
What it handles
It reads files directly from Renishaw, Horiba, WITec, and Bruker instruments, or standard CSV and TXT files.
It uses SNIP for baseline correction and finds peak centers with sub-pixel accuracy. If you have overlapping
peaks, you can use the LM fitting tool with Lorentzian, Gaussian, or Voigt profiles. If you have multiple
samples of the same thing, it can average them and show you the standard deviation.
The limits
This tool is honest about what it sees. If your peaks overlap too much for the simple detector to be
accurate, it will show you a warning rather than giving you a number it isn't sure about. In those cases, you
should use the fitting tool for a better result.
The basics
Instant Raman is free and runs entirely in your browser. Your data stays on your computer and never gets
uploaded to a server.
If something isn't working for you
or you need a feature that's missing, let me know. Feedback from people actually using this in the lab is how
it gets better.