Public developer SDK

AshenConvert API

Make other apps depend on MirrorConvert, not the other way around. Convert supported files locally in your users’ browsers using a self-hostable JavaScript library, with zero usage fees, no account, and no conversion API calls.

Client-side, not a REST conversion server. The script is downloaded once, then conversion runs on the user's machine. The SDK has no per-conversion request quotas. Large files are limited to 70 MiB by the engine.

Quick start · Classic script

<script src="https://mirrorconvert.pages.dev/ashenconvert.js"></script>
<input id="source" type="file">
<button id="go">Convert</button>
<script>
document.querySelector('#go').onclick = async () => {
  const file = document.querySelector('#source').files[0];
  if (!file) return;
  const result = await AshenConvert.convert(file, {
    to: 'docx', layout: 'positioned'
  });
  AshenConvert.download(result);
};
</script>

ES modules

import AshenConvert from 'https://mirrorconvert.pages.dev/ashenconvert.mjs';
const options = AshenConvert.outputs('pdf');
const result = await AshenConvert.convert(file, {to: 'docx'});

SDK interface

Method	Description
`convert(file, {to, layout?, filename?})`	Produces `{blob, name, mime, size, warnings}` (plus source and to).
`outputs('pdf')`	Lists supported output extensions for an input extension.
`supports('csv','xlsx')`	Returns whether a route is implemented.
`inspect(file)`	Input metadata, recognized format and outputs.
`formats({search,category,limit,...})`	Browse the 2,167-extension recognition catalog.
`extract(file)`	Extract text and/or rows from supported source files.
`download(result)`	Trigger a local browser download.

PDF → Word layout mode

layout: 'positioned' (default) attempts to retain the physical page dimensions and text coordinates. layout: 'flowing' creates editable, reflowed paragraphs. Neither reproduces arbitrary graphics, scans, complex fonts, or every layout perfectly. OCR is not included.

Try the SDK here

Choose a file to convert

Output:

Select a file. Nothing will be uploaded.

Offline and distribution

Download bundled JavaScript SDK · TypeScript declarations · API metadata · License and third-party attribution

Host a local copy of ashenconvert.js to avoid any runtime dependency on mirrorconvert.pages.dev. Because conversion runs locally, there is no central job queue, remote upload API, or server-side quota. Browser capabilities still determine some image codecs.