ParseLab

ParseLab is a native data file editor for 8 structured formats — JSON, YAML, TOML, XML, CSV, PLIST, INI, and ENV. Edit with syntax highlighting and live validation, navigate with tree view, search with JSONPath and XPath, convert between formats, diff two files side by side, and explore data structures — all on your iPhone, iPad, or Mac, with a fresh design built for iOS 26.

Developers, DevOps engineers, and data analysts work with structured data files every day — configuration files, API responses, data exports, infrastructure definitions. When you need to quickly inspect a JSON payload on your phone, edit a YAML config on a train, validate a TOML file against a schema, or convert an XML export to CSV, you shouldn't need to open a laptop or paste your data into a web tool that may mishandle your format, strip comments, or silently drop fields. ParseLab gives you a native, offline-capable editor purpose-built for structured data on every Apple device — now rebuilt around Apple's iOS 26 Liquid Glass design with a customizable toolbar and polished glass controls throughout.

ParseLab handles all 8 major structured data formats natively: JSON, YAML, TOML, XML, CSV, PLIST, INI, and ENV. Each format gets its own syntax highlighting engine that understands the grammar — keys, values, strings, numbers, booleans, comments, and structural elements are all color-coded distinctly, with multiple themes to match your preference. Live inline validation flags issues such as duplicate keys and trailing commas as you type, surfacing them in a tappable issues chip. The interactive tree view lets you expand and collapse nodes, search within the tree to jump to any key, and see the full path to any element — essential for navigating deeply nested configurations that would be impossible to parse by scrolling raw text. Advanced search goes further with text, regex, and structural path queries, returning JSONPath-style locations like $.database.name so you can jump straight to what you need.

The format converter transforms between any combination of supported formats instantly — JSON to YAML, XML to JSON, CSV to TOML, and every other permutation — preserving data types, comments where the target format supports them, and structure. Batch conversion processes entire folders at once with customizable presets, so you can convert a directory of JSON configs to YAML in a single operation. The diff tool compares two files side by side — with inline and structural diffs as well — highlighting exactly what was added, removed, or changed between two versions of a configuration file or API response. The visual data explorer breaks a file down at a glance with node count, nesting depth, breadth, and value-type composition, and the on-device AI engine answers natural language questions about unfamiliar files and offers smart, advisory suggestions.