POTM to PGM Converter
Export POTM slides as PGM grayscale images online
Grayscale Precision
PGM preserves smooth tonal gradients from POTM slides — each pixel carries a precise gray intensity value for accurate rendering.
Fast Processing
Server-side conversion finishes in moments. Even multi-slide POTM templates are rendered to PGM without noticeable delays.
Script-Friendly
PGM files use a straightforward text or binary structure that can be parsed directly by custom scripts and analysis pipelines.
How to convert POTM to PGM
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose pgm or any other format you need as a result (more than 200 formats supported)
Let the file convert and you can download your pgm file right afterwards
About formats
Frequently Asked Questions
PGM captures slides in grayscale — useful for image processing research, scientific analysis, or preparing monochrome print previews.
GIMP, Adobe Photoshop, IrfanView, XnView, and Linux command-line tools like ImageMagick all open PGM files without plugins.
PBM is strictly black-and-white with 1 bit per pixel. PGM supports up to 65,535 gray levels — far richer tonal range.
PGM has an ASCII variant (P2) where pixel values are plain-text numbers. You can open and modify individual pixel intensities directly.
No. PGM contains only raw grayscale pixel data — all VBA code from the POTM template is discarded during conversion.
Convertio offers POTM to PGM conversions for free. Paid plans expand upload size limits and boost conversion speed.