Bulk JXL to PGM Converter Online — Free HD Quality

Drag and drop your multiple JXL files into this free online JXL to PGM converter (.jxl to .pgm), and click the Convert button to bulk convert them to PGM format in HD quality. Use the quality slider to fine-tune your PGM output, then download your converted files one by one or as a single ZIP — your original JXL files are removed from our servers right after.

To:
85%

Drop images here or click to browse

PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more

Max 100MB per file

JXL vs PGM — File Format Comparison

Feature JXL PGM
File Extension .jxl .pgm
MIME Type image/jxl image/x-portable-graymap
Compression Type Lossy & Lossless Lossless
Transparency Support Yes No
Animation Support Yes No
Metadata Support Yes Yes

What Is JXL Format?

JPEG XL format with excellent compression and progressive decoding.

  • Compression: Lossy & Lossless
  • Transparency: Supported
  • Animation: Supported

What Is PGM Format?

Portable Graymap format for grayscale images.

  • Compression: Lossless
  • Transparency: Not supported
  • Animation: Not supported