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PGM at a glance
PGM
Convert to PGM when you need a straightforward grayscale raster for scripting, research, or low-overhead image processing.
It is a good target for technical pipelines and intermediate data exchange.
HWP at a glance
HWP
Convert to HWP when the recipient workflow is built around Hancom Hangul, particularly in Korean-language government, academic, or business environments.
It is appropriate for editable forms, official templates, and collaborative word-processing when local compatibility matters more than global default support.
For international exchange, DOCX or PDF may be easier, but HWP is the practical target inside Hangul-centric environments.
Format comparison
| Feature | PGM | HWP |
|---|---|---|
| File type | Image | Document |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | depends | depends |
| File size characteristics | medium | medium |
| Compatibility | broad | broad |
| Editability | moderate | moderate |
| Created year | 1988 | 1989 |
| Inventor | Jef Poskanzer / Netpbm lineage | Hancom |
| Status | active | active |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | moderate | strong |
| Metadata handling | moderate | moderate |
| Delivery profile | strong | strong |
| Workflow fit | delivery | exchange |
| Vector scaling | Not supported | Not supported |
When to use each format
When to use PGM
- capture ingest
- editing
- web or print delivery
- Very simple to parse and generate.
When to use HWP
- authoring
- review and collaboration
- distribution
- Strong relevance in its home ecosystem.
FAQs
Why convert PGM to HWP?
Convert to HWP when the recipient workflow is built around Hancom Hangul, particularly in Korean-language government, academic, or business environments.
It is appropriate for editable forms, official templates, and collaborative word-processing when local compatibility matters more than global default support.
For international exchange, DOCX or PDF may be easier, but HWP is the practical target inside Hangul-centric environments.
What changes when converting PGM to HWP?
This conversion changes how the format behaves in downstream tools and delivery environments.
Archival profile changes from moderate in PGM to strong in HWP. Workflow profile changes from delivery in PGM to exchange in HWP.
What should I review after converting PGM to HWP?
Check the exported file for Less familiar outside its core regional ecosystem.; Often converted to PDF or more global editable formats for broader sharing..