Convert PNM to J2C
Convert PNM images to J2C format, edit and optimize images online and free.
Drop Files Anywhere to Upload
The PNM (Portable Anymap) file extension, developed by Jef Poskanzer in the 1980s, stands for Portable Any Map. It is an uncompressed raster graphics format designed for portable image storage and exchange, encompassing three sub-formats: PBM (Portable Bitmap), PGM (Portable Graymap), and PPM (Portable Pixmap). PNM files store image data in plain text or binary format, ensuring easy usage across different platforms and applications. This format is widely supported by various image editing software and is valued for its simplicity and lossless compression.
The J2C file extension stands for JPEG 2000 Code Stream, a format defined in Part 1 of the JPEG 2000 standard. Developed by the Joint Photographic Experts Group (JPEG) from 1997 to 2000, J2C files utilize wavelet-based compression, supporting both lossy and lossless compression. This format is primarily used for high-quality image storage and transmission, offering superior compression efficiency and flexibility compared to the original JPEG standard. J2C files are often embedded within other file formats like JP2 for enhanced metadata support.
Start uploading a PNM image by clicking the Choose File button or drag & dropping your PNM file.
For an advanced conversion, use the PNM to J2C optional tools available on the preview page and click the Convert button.
Give it a moment for the J2C conversion to complete, then download your file afterward.
To change PNM format to J2C, upload your PNM file to proceed to the preview page. Use any available tools if you want to edit and manipulate your PNM file. Click on the convert button and wait for the convert to complete. Download the converted J2C file afterward.
Follow steps below if you have installed Vertopal CLI on your macOS system.
cd to PNM file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Windows system.
cd to PNM file location or include path to your input file.Follow steps below if you have installed Vertopal CLI on your Linux system.
cd to PNM file location or include path to your input file.