Markdown Previewer

Start with one clear title and use headings to describe the information that follows. A short document may need a title, an introduction, a procedure, and a final note. A longer document should group related details under predictable sections instead of using bold text as a substitute for hierarchy. The preview makes the outline visible, while the source pane lets you check whether each heading uses the intended number of hash characters.

Good structure helps people scan before they commit to reading every paragraph. It also gives screen-reader users useful navigation landmarks and makes future edits easier. Keep heading levels in order and avoid creating a section only because a phrase contains a keyword.

A list is valuable when its items belong to the same group or describe a sequence. Use a numbered list for steps and a bulleted list for unordered choices. Then preview the document with short and long items so you can see whether wrapping remains understandable. For links, use descriptive anchor text that tells the reader what opens, and check that the destination is correct before publishing.

Tables deserve a separate pass because a missing pipe or separator can shift every column. Include a long cell, an empty cell, and a value containing punctuation in your test table. If the table becomes difficult to read on mobile, replace it with bullets or several smaller sections rather than forcing every detail into a narrow grid.

Use fenced code blocks for commands, configuration, and sample output so whitespace stays visible. Add a language hint when the destination supports syntax highlighting, but do not claim that a previewer executes the code. A Markdown renderer should display code as content, not run it. This distinction matters when you are documenting scripts or showing a security-sensitive example.

When a document includes angle brackets, underscores, or asterisks that should appear literally, escape them or place them in a code span. Previewing catches accidental formatting changes such as a password-like value becoming bold or a file path turning into an unintended link.

A document can be valid Markdown and still be hard to use. Read the preview from top to bottom and ask whether the first screen explains what the page is for. Look for paragraphs that are too dense, links that lack context, and instructions that skip an action the reader must perform. Then switch back to the source and make the smallest change that improves clarity.

Use a few representative documents rather than a single ideal example. A README, a release note, and a troubleshooting note stress different structures. Testing those forms gives you confidence that the previewer supports your actual writing workflow instead of only a polished demo.

This previewer processes Markdown in the browser. You can use it to review a draft before copying the source or rendered HTML into another editor, without creating an account or uploading the document to a TextRepeat.org server. That is useful for quick checks, but your organization may still require an approved environment for confidential material.

When the draft is ready, copy the source if the destination accepts Markdown. Copy rendered HTML when you are moving formatted content into an editor that expects markup. Always compare the pasted result with the preview, because a destination may support a different Markdown dialect or sanitize some HTML elements.