How to Open, Fix and Compare JSON Files on iPhone

Short answer: to open a JSON file on an iPhone or iPad, use JSON Viewer and Editor. It shows JSON as an expandable tree, repairs common errors such as trailing commas, compares two documents, and works offline with no account.

View and edit

Browse objects and arrays as a tree, search values and follow breadcrumb paths through deeply nested data. Switch to formatted code with syntax highlighting and line numbers when you need the raw text. Edit in the text editor or change values straight from the tree; add, delete, duplicate and reorder nodes.

Repair

JSON Fixer repairs trailing commas, missing quotes and unquoted keys.

Compare, validate and query

Convert and export

Convert JSON to YAML, CSV, XML or key-value text, and export to PDF or Excel, save to Files, print or share.

API tools

Send GET, POST, PUT, PATCH and DELETE requests with custom headers and bodies and open the response in the JSON viewer.

FAQ

How do I fix invalid JSON on iPhone? Use JSON Fixer for trailing commas, missing quotes and unquoted keys.

Can I convert JSON to CSV on iPhone? Yes, along with YAML and XML.

Is my data uploaded? No, documents stay on your device.

Download JSON Viewer and Editor on the App Store · Get it on Google Play for Android

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AppJobRating
Markdown Editor & MD ViewerWrite and preview Markdown on mobile.4.7★ · 5K+installios
WebEva: Build Websites & CodeBuild websites from your phone.4.4★ · 5K+installios
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## Free web tools

Background RemoverSnapglowSQLite ViewerQueryDrill

## Questions, answered

Is there a free Markdown editor for Android?

Yes — Markdown Editor & MD Viewer is free on Google Play. It gives you a split-view editor with live preview, syntax highlighting, and HTML/PDF export, and it works fully offline with no account.

Can I edit Markdown from my phone on a desktop browser?

Markdown Editor & MD Viewer includes a Live Server: your phone hosts the document over Wi-Fi and you edit it from any desktop browser with two-way live sync. The file never leaves your device.

Can I make Mermaid diagrams on Android?

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Can I turn Markdown into slides or a PDF on my phone?

Presentation Mode turns any Markdown document into a fullscreen slide deck, and export produces styled HTML or print-ready PDF — all generated on-device.

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