HTML Turn Markdown Guide: Keep Structures, Links, Tables and Pictures

Which structures can be retained and which will be lost

Before conversion, determine whether to "just text" or "to keep navigation and footnotes". The entire HTML often contains menus, cookies tips and recommended cards; It's a bad idea to put these together. The most reliable input is the HTML clips in the content area, not the entire web source code.

Step in the operation of KiloCell of pages

1. Open HTML Turn Markdown Converter, confirm that the left is the HTML input area, and the right is the Markdown output area.
2. Exports the content area from the browser developer tool or CMS, copying the real HTML. Do not paste the passwords, tokens, user information on the page.
3. Selecting title style: Reservoir Universal # , select ATX; Setext is selected when the old document explicitly requires the underlined heading.
4. Select the unserial symbol to keep the int rule of the existing repository. Different symbols mix to create meaningless diffs.
5. Click " Start transformation " to first view the title, list, link, picture and code block and then copy the result.
6. Use the Markdown previewer to render the output, and to check for clicks on the embedded list, table alignment and links.
7. Convert relative URLs into the actual path of the warehouse or site; Confirms that the picture has an alternative text, code blocks added to the language identification.
8. Deletes navigation, advertising, hiding text and repeating title, and then breaks lines with the HTML/Markdown formatting tool.

Tools use the Turndown logic in the browser to convert common nodes, which are suitable for small and medium-sized segments. It does not capture remote web pages, download pictures or judge the main content of the article for you. The input must be provided by you, and the output still needs to be reviewed.

Back and back: How a content card changes

Input HTML：

<article>
  <h2>部署Steps</h2>
  <p>FirstAnn.装 <strong>Node.js 20</strong>Again.Run <code>npm install</code>。</p>
  <ul><li>Ready.环境</li><li>RunTest</li></ul>
  <p><a href="/docs/start">ViewCompleteDocument</a></p>
</article>

Output Markdown may be:

## 部署Steps

FirstAnn.装 **Node.js 20**Again.Run `npm install`。

- Ready.环境
- RunTest

[ViewCompleteDocument](/docs/start)

Here is the structure and emphasis that is retained.article The packaging itself was omitted. If the target warehouse is deployed on the sub-routine,/docs/start This may need to be replaced with a relative path or complete URL; The converter will not know your release base path.

Manual review of forms, links and pictures

table. A simple rectangular table can be converted to Markdown;rowspan、colspan, multiline headers and HTML cells are regularly displayed. The semantic of the merged cell cannot be restored by matching spaces, and should be replaced by a list, subsection table or retention of the original HTML.

link. Text empty links, JavaScript links, download links and links with tracking parameters need to be handled separately. - Put it on. javascript:void(0) It's not only useless to write directly into Marktown, it's also likely to create security problems. Check case, end slash and anchor after internal link migration.

Picture. src It's probably just a place map. The real address is hidden. data-src； The converter can only see the properties in the input. Image sizes, lazy loads, ACCDNs and relative paths need to be manually repaired, and alternative text cannot be given a file name.

Code and Special Characters

among HTML <、& , the entity is restored to readable characters, but the text should be retained in the code example. Like what? <button> When you appear inside the code block, the Markdown output must remain inside the fence and cannot be used as an HTML tag.

<button type="submit">Save</button>

If the original is <pre><code class="language-js">...</code></pre>Language names usually help you to fill them up manually. `js 。 The converter does not necessarily recognize all class names and does not verify whether the code is operational. The migration should be followed by a formatting or testing tool for the corresponding language.

Error table: Successful conversion does not mean that the content is correct

At least one title, one nested list, one link, one picture and one code block are checked after each conversion. Structural losses cannot be detected by looking at the output length alone.

Real scene: four routes of document migration

CMS migrates to Git. Copy HTML from the article body container and convert it to an ATX title before submitting it to the repository. Move scripts to harmonize internal links and directories of pictures, and then let the Markdown previewer check through each page to avoid submitting the CMS recommended module.

Database of knowledge. The old system exports HTML with tables and footnotes. (a) Convert the main text and replace the footnote with the list of “references”; A small HTML section is maintained in the complex consolidated table to ensure that the information is not equiverted by error.

API rewrites the document. always include examples of HTML <code> and <pre>。 Converts to fills the code block with the language identifier and then runs the formatting device in the CI to ensure that the copied command does not change by decoded entity.

Web study notes. Only the selected content clips are kept and the original page URL and the date of the grab is recorded. The result of the conversion is used in personal notes and the entire copyrighted content should not be republished.

Security, copyright and privacy boundaries

• Local converters reduce upload paths, but clipboards, download files and screen sharing may still leak internal documents.
• The converter will not proactively execute input scripts; The output is still being used for HTML cleaning before being placed on the website, and Markdown cannot be considered natural security.
• Delete javascript: Links, inline incidents and suspicious incidents; The URL of Markdown may still point to fishing stations.
• Only what you have the right to copy and reissue. The web page rotation of Markdown does not automatically eliminate copyright, personal information or access control obligations.
• Pictures and attachments may require login to access them. Pre-removal confirmation of licence, storage location and invalidity strategy.

How to choose relevant tools

How to maintain the version after conversion

After moving to Git, it is recommended that the original HTML clip be linked to the generated Markdown, at least recording the source URL, export date, conversion options and manual change point. This allows for the subsequent site update to be re-engineered and compared with the difference, rather than covering the entire article. Title style, list symbol and line break rules should be written into the repository contribution guide to avoid each individual producing meaningless changes in a wide variety of options. If the article contains a picture, it is advisable to register the resource path and licence simultaneously, and to locate responsibility when the link is disabled.

When to keep the original HTML

Some elements should not be forcibly downgraded. For example, interactive code presentations, statistical tables with consolidated cells, components that require ARIA properties that are accessible, may lose the operational semantics when converted to Markdown. Only the narrative text can be converted to Markdown, where the cleaned HTML is kept in part where precise structure is required, and where the reader is provided with a pure text replacement. The mixage requires clear justification and security clearance, and the integrity of information cannot be sacrificed in pursuit of “all Markdown”.

FAQ