Raw Text Editor vs OnePreview

Raw Text Editor is a lightweight and focused app built for working directly with plain text files. It provides a clean, distraction-free environment designed for users who need full control over raw content without hidden formatting or automatic styling. The app allows you to create new text files and edit existing ones quickly and efficiently. All content is handled as pure plaintext, ensuring that what you see is exactly what is saved. Raw Text Editor supports structured text formats with dedicated UI handling to make editing easier while preserving raw access. Supported file types include JSON (.json), JSON Lines (.jsonl), NDJSON (.ndjson), Markdown (.md), and CSV (.csv). These formats are opened and managed in ways that improve usability while maintaining complete control over the underlying text. Built for simplicity and performance, Raw Text Editor is suitable for developers, data editors, and anyone who regularly works with text-based files and needs a reliable, no-nonsense editing tool.

Open Markdown and developer files in OnePreview on iPhone and iPad. OnePreview renders GitHub-style Markdown, MDX, TextBundle and TextPack packages, JSON, JSONL, YAML, XML, CSV, TSV, TOML, ENV, SQLite databases, source code, plain text, logs, and ZIP and TAR.GZ archives. In Files, long-press a supported document, choose Open With, then select OnePreview. A normal tap may use Apple's built-in preview for common file types. Inside OnePreview, switch between rendered Markdown and source, view Mermaid diagrams and KaTeX math with bundled assets, inspect structured data and SQLite schemas, and check archive contents before extracting. Built for developer workflows, AI-generated files, documentation review, and everyday file browsing. Processing is fast, local-first, and does not require an account.