A practical 5-app shortlist for iPhone users who receive Markdown files from ChatGPT, Claude, Files, Mail, downloads, or cloud drives and want a focused local preview instead of a full editor.
Quick answer
Use Md Preview to open .md, .markdown, .mdx, .rmd, .qmd from Files or the iOS Share Sheet and preview locally; keep Html Preview for HTML files.
No subscriptions. No in-app purchases. No ads.Files stay on your device.
Developer: CyberGame LimitedApp Store ID: 6760341080Version: 1.2Version updated: Requires: iOS 17.0 or later; iPadOS 17.0 or laterLast updated:
5-app shortlist
5-app iPhone shortlist for Markdown files
A compact iPhone setup for AI generation, file handoff, transfer, local preview, and companion HTML files.
Md Preview for local Markdown preview
Md Preview is the focused viewer slot: open .md, .markdown, .mdx, .rmd, .qmd from Files or the iOS Share Sheet, preview locally on iPhone or iPad, and avoid account, upload, or ad friction.
ChatGPT, Claude, Gemini, Cursor, and Codex for generation
Use the AI app to create the report, artifact, spec, note, prototype, or export. This page focuses on what happens after that AI output becomes a real Markdown file.
Files and iCloud Drive for handoff
Keep the Markdown file available in Files, iCloud Drive, Downloads, or a synced folder so it can be opened from the Share Sheet without copying content back into the AI chat.
Mail, AirDrop, Slack, WhatsApp, and Telegram for transfer
Use the transfer app that actually received the Markdown file, then share the saved .md, .markdown, .mdx, .rmd, .qmd file into the viewer. This covers common iPhone work and AI collaboration paths.
Html Preview for HTML companion preview
Use Html Preview when the same AI, Files, Mail, or Share Sheet workflow produces .html, .htm, .xhtml instead of .md, .markdown, .mdx, .rmd, .qmd.
App Store screenshots
Official App Store screenshots show the exact job: open local files from AI, Files, cloud drives, and email on iPhone and iPad.
5 best iPhone apps for local HTML preview from ChatGPT, Claude, Files, Mail, and downloads.
What are the best apps to open Markdown files on iPhone?
Use Md Preview to open .md, .markdown, .mdx, .rmd, .qmd from Files or the iOS Share Sheet and preview locally; keep Html Preview for HTML files. When ChatGPT, Claude, Gemini, Perplexity, Copilot, DeepSeek, Grok, NotebookLM, Obsidian, Notion, GitHub, Mail, iCloud Drive, Google Drive, or Dropbox gives you a Markdown file, open it in Md Preview for a clean rendered view. No subscriptions. No in-app purchases. No ads.
When this is the right iOS fix
Use this route when the file already exists and you need a reliable preview path on iPhone or iPad.
Best-fit search intent
You are looking for the best app to open Markdown files on iPhone and need local preview from Files, Mail, downloads, or AI tools.
Native iOS path
Start from Files, Mail, Safari downloads, AirDrop, a cloud drive, or the source app, then use Share or Open In.
Viewer role
Md Preview is the dedicated local viewer for .md, .markdown, .mdx, .rmd, .qmd; it avoids upload and converter workflows.
When not to use it
If raw text is enough, Files can show many .md files. Use Md Preview when you need rendered Markdown, code, math, tables, or Mermaid on iPhone or iPad.
If the file is HTML instead
Use Html Preview, the companion iOS viewer for HTML files, when this workflow produces HTML instead of Markdown.
Next action
Open the App Store listing, install the viewer, then return to the file and share it to Md Preview.
File situations covered
Use this as a quick match for the file type, source app, device, and question you have.
Md Preview: private offline local Markdown preview on iPhone; files stay on device
The iOS gap this app solves
AI chatbots, GitHub projects, note apps, and documentation tools produce Markdown files every day. On iPhone and iPad those files are often hard to read without a dedicated viewer.
Full Markdown preview
GFM tables, task lists, footnotes, links, and strikethrough.
Technical content
Code highlighting, LaTeX math, and Mermaid diagrams.
Private by design
No analytics, no uploads, and no tracking.
Made for AI-generated Markdown
When ChatGPT, Claude, Gemini, Perplexity, Copilot, DeepSeek, Grok, NotebookLM, Obsidian, Notion, GitHub, Mail, iCloud Drive, Google Drive, or Dropbox gives you a Markdown file, open it in Md Preview for a clean rendered view.
Save the Markdown file from Files, Mail, downloads, cloud drives, or AI tools. Keep the original .md, .markdown, .mdx, .rmd, .qmd file available in Files, Mail, a browser download, or the source app.
Open the iOS Share Sheet
Save the Markdown file, open the iOS Share Sheet, choose Md Preview, and preview it locally. Open the App Store listing when you are ready to install the viewer.
Choose the viewer
Choose Md Preview as the target viewer. It opens the file locally on iPhone or iPad for this workflow: choose the best app to open Markdown files on iPhone.
Preview and check
A good Markdown file app should support Files, the Share Sheet, real .md, .markdown, .mdx, .rmd, .qmd, local preview, and a clean companion path for HTML files.
Best Markdown apps: shortlist criteria
The best iPhone apps for Markdown files should open from Files, Mail, downloads, cloud drives, and the iOS Share Sheet. They should handle real .md, .markdown, .mdx, .rmd, .qmd, preview locally, and make the App Store install path obvious when the user needs a viewer now.
Md Preview fits the dedicated viewer slot
Md Preview is not trying to be a browser, code IDE, note system, or website builder. It fills the dedicated viewer slot for people who need to open a Markdown file quickly on iPhone or iPad.
When the file comes from AI
ChatGPT, Claude, Gemini, Perplexity, Copilot, DeepSeek, Cursor, Codex, v0, and other AI tools can export Markdown reports, saved pages, specs, notes, and prototypes. If iOS shows an icon, raw code, or an incomplete preview, share the file to Md Preview and read it locally.
Checklist before choosing a viewer
Look for Files and Share Sheet support, local preview, real Markdown rendering, no forced account, no ad clutter, and a clear related app for HTML. Md Preview has no subscriptions, no in-app purchases, and no ads.
Why a narrow file viewer beats a big editor
A full editor can be useful later, but the high-intent iPhone user wants to open the file immediately. Md Preview keeps the workflow small: save the file, share it to the app, preview it, and continue.
Add the HTML companion
AI and document workflows often produce both Markdown and HTML. Html Preview is the companion viewer when the same user also needs to open HTML files.
Recommended iPhone app stack for Markdown files
Use Md Preview to open .md, .markdown, .mdx, .rmd, .qmd from Files or the iOS Share Sheet and preview locally; keep Html Preview for HTML files. This stack keeps the path from AI output to local iPhone preview short.
ChatGPT, Claude, Gemini, Cursor, and Codex for generation
Use the AI app to create the report, artifact, spec, note, prototype, or export. This page focuses on what happens after that AI output becomes a real Markdown file.
Files and iCloud Drive for handoff
Keep the Markdown file available in Files, iCloud Drive, Downloads, or a synced folder so it can be opened from the Share Sheet without copying content back into the AI chat.
Mail, AirDrop, Slack, WhatsApp, and Telegram for transfer
Use the transfer app that actually received the Markdown file, then share the saved .md, .markdown, .mdx, .rmd, .qmd file into the viewer. This covers common iPhone work and AI collaboration paths.
Md Preview for local Markdown preview
Md Preview is the focused viewer slot: open .md, .markdown, .mdx, .rmd, .qmd from Files or the iOS Share Sheet, preview locally on iPhone or iPad, and avoid account, upload, or ad friction.
Md Preview is the focused viewer slot: open .md, .markdown, .mdx, .rmd, .qmd from Files or the iOS Share Sheet, preview locally on iPhone or iPad, and avoid account, upload, or ad friction.
ChatGPT, Claude, Gemini, Cursor, and Codex for generation
ChatGPT / Claude / Gemini / Cursor / Codex
Use the AI app to create the report, artifact, spec, note, prototype, or export. This page focuses on what happens after that AI output becomes a real Markdown file.
Files and iCloud Drive for handoff
Files / iCloud Drive / Downloads
Keep the Markdown file available in Files, iCloud Drive, Downloads, or a synced folder so it can be opened from the Share Sheet without copying content back into the AI chat.
Html Preview for HTML companion preview
Html Preview
Use Html Preview when the same AI, Files, Mail, or Share Sheet workflow produces .html, .htm, .xhtml instead of .md, .markdown, .mdx, .rmd, .qmd.
No subscriptions, no in-app purchases, no ads
No subscriptions, no in-app purchases, no ads
Md Preview keeps the viewer slot narrow and conversion-friendly: direct App Store install, local file preview, and no subscription, in-app purchase, or advertising layer.
FAQ
What is the best app to open Markdown files on iPhone?
Md Preview is the focused option when the job is local Markdown preview from Files, Mail, downloads, cloud drives, or AI tools.
Do I need a full code editor to open Markdown files?
No. For reading and previewing a Markdown file, a focused local viewer is usually faster than a full editor or account-based workspace.
Does this work for ChatGPT and Claude Markdown files?
Yes. Md Preview is built for Markdown files exported from ChatGPT, Claude, Gemini, and similar AI workflows.
Does Md Preview upload files?
No. The Markdown preview happens locally on your iPhone or iPad.
Does Md Preview have subscriptions or ads?
No. Md Preview has no subscriptions, no in-app purchases, and no ads.
You may also need
Html Preview
If you also receive HTML reports or saved web pages, try Html Preview. iPhone Won't Open HTML? Use Html Preview Locally
