Markdown Editor with Live Preview for Mac

Write in Markdown, check the result beside it

A Markdown editor with live preview lets you change the source and inspect the rendered document in the same window. In notePad++++, this is useful for a README, release note or tutorial containing links, tasks, tables, code and images. You can check both the exact syntax and what a reader will see.

This guide focuses on the editing process. For the wider feature tour, including diagrams, math and export limits, see Markdown Editor for Mac. This site is published by the App's developer. Our App captures use a fictional demonstration document; body screenshots open at full size when clicked.

Download notePad++++ on the Mac App Store. Check the listing for current requirements, pricing and Pro availability.

Open a file and turn on Preview

Save a copy of your document as a normal .md file and open it in the App. Click Preview in the toolbar. The editable source stays on the left; the rendered document appears on the right.

Try changing a heading or a short paragraph first. The preview updates from the text. A missing image is a separate problem: the document contains a reference to an asset, rather than the image data itself. Keep the .md file and its relative asset folder together.

Link scrolling, then enable precise alignment

Scroll either pane to follow the same part of the document. Moving down the editor moves the preview; scrolling the preview moves the editor back to the corresponding content. Click a rendered heading, table or image when you want to locate its source.

The small chain button near the top of the divider adds precise alignment. It inserts display spacing where needed so a short image reference can line up with a tall photo, for example. The blue highlight and connection line identify corresponding blocks.

An enlarged crop of a real capture, with a tutorial arrow added. Click the chain to enable precise block alignment; the arrow is not an App control.

When you start editing again, precise alignment switches off automatically. The preview still updates. Turn the chain back on for the next review pass. Live text updates, linked scrolling and exact visual alignment are related aids, but they do different jobs.

Review tasks and tables without losing the source

A preview can help with more than appearance. Clicking a task checkbox updates the matching Markdown marker. In the demonstration, the third task changed from - [ ] to - [x], and the file was saved.

The saved third task is visible in both panes. This is an actual file edit, rather than a separate checklist stored outside the document.

For a table, click the rendered grid to find its source and open Adjust Table. The panel exposes row and column counts, cell values and alignment controls.

The existing demonstration table is opened for inspection. A Markdown table remains a text table; it does not become a spreadsheet with formulas.

Prepare a local image while reviewing the document

Select an image reference and open Edit Image. The App provides crop, rotation and proportional size controls. The example uses a landscape photo, making the effects easier to inspect than a diagram or table would be.

Real capture: the prepared 1200×457 photo was saved at 601×229 in the App. Photo by Scott Goodwill on Unsplash, used under the Unsplash License.

Keep an original copy: saving edits to an existing asset writes to that image file. Custom output dimensions use the Pro Save Edited Image action. Once the edited photo is saved, check its placement and its reference in the Markdown again.

Add AI help after configuring your own service

AI is optional; normal Markdown editing and preview do not require an AI API. An API key is the credential that lets the App send a request to your chosen model service. Configure the key, service address and model in AI Settings, and check the App's current AI access requirements. App licensing and any model-provider charges are separate.

The AI menu provides translation, summarization, grammar correction, writing improvement, simplification and code explanation. The AI Writing Assistant also exposes writing actions such as improving clarity and Markdown layout. This can help when a document is structurally correct but its wording needs another pass.

Real App panel: the right side shows the original document, not a generated result. The screenshot demonstrates available controls; it is not a claim about a model's output quality.

Start with one selected paragraph. For text operations, a single nonempty selection is used first; without one, the active document is used. The submitted text goes to the service you configured. Review the proposed result before applying it, or discard it. Then check the live preview again: an AI rewrite can change a link, code fence or table just as a manual edit can.

For example, summarize a release-note paragraph, correct an introduction's grammar, or translate a selected explanation. Keep headings, image references and code examples outside the selection when you only want the prose changed. No AI service credentials were changed or model generation run for these screenshots.

Finish the document, then maintain the folder

Before saving, review the affected section in both panes. Check that task states, table structure, image paths and code fences still match your intent. If the file will be published elsewhere, open a copy in that destination or inspect the chosen export format.

For a repeated edit across documents, use workspace search and regex replacement to locate the pattern, or batch text processing to review a reusable cleanup sequence. Keep broad changes separate from a quick paragraph edit so you can assess their effect before applying them.

Try notePad++++ for Mac with a copy of your own Markdown file. Preview the result, try the chain control, and add AI only when the configured service fits the text you want to send.

Updated October 16, 2026. App images are real captures, with an explicitly labelled arrow on the chain close-up. Some features require Pro access or an eligible trial; check the current App and store listing.