PNM to CUR Converter

Switch from PNM to CUR format — online and effortless

Drop files here. 1 GB maximum file size or Sign Up
to
Facebook Amazon Microsoft Tesla Nestle Walmart L'Oreal

Batch Conversion

Convert multiple PNM files to CUR at once. Upload a batch and each file is processed independently — efficient and time-saving.

Browser-Based Tool

Everything happens in the browser. Open the page, upload PNM, get CUR — no desktop software or extensions involved.

Cloud Processing

The heavy lifting happens on our servers. Your device does not process anything — just upload PNM and download CUR.

How to convert PNM to CUR

1

Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.

2

Choose cur or any other format you need as a result (more than 200 formats supported)

3

Let the file convert and you can download your cur file right afterwards

About formats

PNM (Portable Any Map) is an umbrella designation within the Netpbm family that encompasses all three classic portable map formats: PBM (Portable BitMap for monochrome), PGM (Portable GrayMap for grayscale), and PPM (Portable PixMap for color). Created by Jef Poskanzer in 1988 as part of the Pbmplus toolkit, PNM is not a distinct format with its own magic number but rather a collective name indicating that any of the three underlying formats may be used. When software reads a PNM file, it examines the magic number (P1/P4 for PBM, P2/P5 for PGM, P3/P6 for PPM) and processes accordingly; when software writes a PNM file, it selects the most appropriate subformat based on the image content. This convention allows Netpbm processing pipelines to pass images between tools without requiring the user to track which specific format is in use — every tool in the chain accepts PNM input and produces PNM output, with the actual format chosen automatically. The Netpbm toolkit provides hundreds of command-line utilities for image manipulation: scaling, rotation, color adjustment, compositing, format conversion, quantization, and analysis — all operating on PNM as the common interchange format. One advantage is pipeline composability: Netpbm tools can be chained with Unix pipes (e.g., pnmflip | pnmscale | ppmquant | ppmtogif) to build complex image processing operations from simple primitives, following the Unix philosophy of small, focused tools. The format family's cross-platform availability and language support is another strength — virtually every image processing library in every programming language can read and write PNM variants. PNM files are supported by ImageMagick, GIMP, and all major image tools.
Developer: Jef Poskanzer
Initial release: 1988
CUR is the cursor image format for Microsoft Windows, structurally nearly identical to the ICO (icon) format but with the addition of a hotspot coordinate that identifies the precise pixel position where mouse clicks register. Introduced with early Windows versions, CUR files use the same container structure as ICO: a directory header listing one or more image entries, each specifying dimensions and color depth, followed by the pixel data for each variant. Like ICO, a single CUR file can contain multiple images at different sizes and color depths, allowing Windows to select the most appropriate cursor image for the current display resolution and color settings. Image data within CUR files can be stored as BMP pixel arrays (for legacy compatibility) or as embedded PNG images (supported since Windows Vista) for alpha-blended cursors with smooth edges. The hotspot coordinate — the distinguishing feature separating CUR from ICO — is stored as an X,Y pair in the directory entry header, typically pointing to the tip of an arrow or the center of a crosshair. One advantage is multi-resolution packaging: a single CUR file provides appropriate cursor imagery across display densities from standard DPI to high-DPI screens. Native Windows integration is another strength — CUR files are loaded directly by the operating system for mouse cursor display without any third-party software. CUR files are used by application developers and theme creators to customize the pointing experience across Windows environments.
Developer: Microsoft
Initial release: 1987

Frequently Asked Questions

Why convert PNM to CUR?

Converting to CUR provides custom Windows cursors, making your content more versatile for sharing and practical use.

What programs open CUR files?

CUR files are supported by Windows OS, cursor editors, IrfanView. Pick whichever application suits your operating system and workflow.

Is the conversion process secure?

Security is built in — source PNM files and converted CUR outputs are automatically removed from servers after processing.

What if my PNM file is corrupted?

Corrupted files are detected during upload. If your PNM file has structural issues, the converter will alert you immediately.

Will I lose image quality converting PNM to CUR?

The conversion preserves the original quality of your PNM file. Any inherent quality limits in PNM carry over, but nothing additional is lost.

Can I convert multiple PNM files to CUR at once?

Batch conversion is supported. Upload multiple PNM files and the converter processes them all to CUR together.