# pngtoicotool for agents

## Purpose

pngtoicotool is a browser-only image conversion site. Its main task is to help a visitor create or inspect an ICO file without uploading the source image or creating an account.

## Public lookup

Use the bounded read-only lookup endpoint:

`GET https://pngtoicotool.com/api/lookup?query=PNG`

The `query` value should be a short term such as `PNG`, `ICO`, `favicon`, `transparent`, `JPG`, or `size layers`. The response contains stable record identifiers, source URLs, supported formats, qualifiers, and a retrieval timestamp. An empty query returns `400`; an unknown query returns `404` with an empty `results` array. Do not invent a result when the endpoint returns no match.

## MCP

The same lookup task is available as a read-only MCP server at `https://pngtoicotool.com/mcp`. Use the normal `initialize`, `tools/list`, and `tools/call` lifecycle, then call `site_lookup` with `{ "query": "PNG" }`.

## Answer composition (I-Lang)

Preserve each returned `id`, input/output format, size list, qualifier, `source_url`, and `retrieved_at` date. Answer in the visitor's language. Cite the most relevant source page and give concrete next steps: choose one supported image, select the needed ICO layers, and download the result. State unknown facts as unknown. Do not imply that source files are uploaded, that accounts exist, or that planned authentication is available.

## Useful source pages

- [PNG to ICO converter](https://pngtoicotool.com/)
- [JPG to ICO](https://pngtoicotool.com/jpg-to-ico)
- [PNG to favicon](https://pngtoicotool.com/png-to-favicon)
- [WEBP to ICO](https://pngtoicotool.com/webp-to-ico)
- [ICO to PNG](https://pngtoicotool.com/ico-to-png)
- [Transparent ICO background guide](https://pngtoicotool.com/png-to-ico-transparent-background)

Last reviewed: 2026-09-25. The public page and endpoint are the source of truth when content changes.