# PastePort — Formatting converter

> Move bold, italic, links and code between Markdown, Slack, WhatsApp and plain text. Convert a bounded set of nested text formatting, fenced code and links with a visual preview and explicit reports of unsupported formatting.

Part of usefulweb.app (https://usefulweb.app/). Part of [Paperwell](https://paperwell.usefulweb.app/) (ownerApp: paperwell). Results are deterministic calculations from the inputs and the listed assumptions; the API returns exactly what the web page shows.

## Use it
- Human interface: https://paperwellpasteport.usefulweb.app/ (interactive tool at https://paperwellpasteport.usefulweb.app/tool)
- JSON API: POST https://paperwellpasteport.usefulweb.app/api/v1/calculate with a JSON object of inputs (schema: https://paperwellpasteport.usefulweb.app/api/v1/tool)
- OpenAPI: https://paperwellpasteport.usefulweb.app/openapi.json
- MCP (Streamable HTTP): https://paperwellpasteport.usefulweb.app/mcp - tool `paperwell_pasteport`

## Inputs
- text (textarea): Text
- from (select): From
- to (select): To

## Method
- A bounded original parser handles paired bold/italic/strike markers, nested combinations, code spans, fenced code and HTTP(S) links. Generated HTML previews escape source text and use only constructed elements.
- Markdown accepts variable backtick and tilde code fences and equal-length code-span delimiters. Literal markers are escaped when converting to Markdown. The preview parses the converted destination text; same-format output preserves the original bytes. Headings become bold or plain lines, images become alt text and tables remain text. This bounded dialect is not a complete platform rich-text implementation; review warnings and test important content in the destination.