Is my file uploaded or stored?

Your file is sent to our parser to read the spectrum and is never saved - it exists only for the moment it takes to return the plot.

What can I export my spectrum to?

With a free account: CSV, Microsoft Excel, JCAMP-DX, Galactic SPC, PerkinElmer, MATLAB, NumPy, and Bruker - plus PNG and SVG graphics.

Which spectrum files can I open?

Over 50 formats, including Bruker OPUS (.0, .1, .opus), Thermo OMNIC (.spa), Galactic SPC, JCAMP-DX (.jdx/.dx), Renishaw (.wdf), PerkinElmer (.sp), Agilent/Cary, JASCO, Shimadzu, Horiba, Ocean Optics, and generic CSV or text.

Open a spectrum file online - free

Drag in your FTIR, Raman, UV-Vis or NIR spectrum and see it plotted instantly. Overlay several files to compare them.

Your data is never stored. Files are read in memory and discarded - your data stays yours.

Drop any spectrum file here

OPUS, SPC, JCAMP, OMNIC, Renishaw, JASCO, and - drop several to overlay.

Files

The interactive viewer needs JavaScript. To open and analyze your file, create a free account or download Peak Spectroscopy for desktop.

Which spectrum files can this open?

Most spectrometers save in their vendor's own binary format, which normally opens only in that vendor's software on the instrument PC. This page reads the file for you and plots it here - so you can view or share a spectrum without the original software installed.

The formats people most often arrive with: Bruker OPUS (.0, .1, .opus), Thermo / Nicolet OMNIC (.spa), Galactic / GRAMS (.spc), JCAMP-DX (.jdx, .dx), Renishaw (.wdf), PerkinElmer (.sp), Agilent / Varian Cary, JASCO, Shimadzu and Horiba - plus plain CSV or text. Use "50+ more" in the box above for the full list.

How to open a spectrum file

Drag your file into the box above (or click to choose). Drop several to overlay and compare.
The spectrum is parsed on our server and plotted here. Nothing is stored.
Zoom and inspect. To export or run analysis like peak fitting, create a free account.

FAQ

Is my file uploaded or stored?: Your file is sent to our parser to read the spectrum and is never saved - it exists only for the moment it takes to return the plot.
What can I export it to?: With a free account: CSV, Microsoft Excel, JCAMP-DX, Galactic SPC, PerkinElmer, MATLAB, NumPy, and Bruker - plus PNG and SVG graphics.
Which files can I open?: Over 50 formats: Bruker OPUS, SPC, JCAMP (.jdx/.dx), Thermo OMNIC (.spa), Renishaw (.wdf), PerkinElmer (.sp), Agilent/Cary, JASCO, Shimadzu, Horiba, Ocean Optics, and many more. Use "50+ more" above for the full list.
Do I need an account?: No. Viewing is free with no signup. An account is only needed to export data or graphics and to run analysis such as peak fitting.