Why convert OTPU to PNG?
People want a shareable, universal picture of a graph rather than a proprietary Origin template. .otpu stores styling and axis/layout rules that only Origin understands, whereas .png is a lossless raster image any browser, document or presentation can display. The conversion is really "build the graph, then screenshot it as an image."
How to convert OTPU to PNG
OriginLab Origin / OriginPro PAID
Select your data, choose the template under Plot > User Templates, then run File > Export Image and pick PNG as the format. Set DPI and transparency in the export dialog.
Copy graph as image EASIEST
With the graph active in Origin, use Edit > Copy Page, choosing PNG as the image format, then paste directly into your document or image editor.
About these formats
An .otpu file is a Unicode graph template created by OriginLab's Origin, the data analysis and graphing package used by scientists and engineers. It stores the layout and formatting of a…
Open .OTPU details →
.PNG
Portable Network Graphics
A PNG (Portable Network Graphics) is a lossless raster image format. Every modern OS, browser, and image app opens PNGs natively - just double-click. The most common questions are not about…
Open .PNG details →Quality & what to watch
- An
.otpufile by itself has no data, so you must open a worksheet and plot before any image can be exported. - PNG is a flat raster snapshot - you lose Origin's editable objects, layers and data links.
- Set a high DPI in the export dialog for print; low-DPI PNGs look blurry when scaled up.
Frequently asked questions
Can I convert an .otpu straight to PNG without Origin?
.otpu is Origin's proprietary template and only Origin (or OriginPro) can read it and render a graph to export.Why does my template give an empty graph?
What DPI should I export at?
Is OTPU different from OTP?
.otpu is the Unicode template introduced in Origin 2018; .otp is the older non-Unicode equivalent. Both are used the same way.
