Which config formats does it handle?
It recognizes common ENV, INI/CONF, JSON, XML, YAML, TOML, and properties-style files. Parsing depth varies: complex YAML or TOML features may not be represented fully by the lightweight inspector.
File viewer
Config File Viewer
Open, paste, or drag and drop common config files to inspect keys, sections, values, warnings, and possible secrets locally in your browser.
Runs Locally
This tool runs in your browser. Files never leave your device.
Drop .env, .ini, .conf, .config, .cfg, .properties, .toml, .json, .yaml, .xml, or .txt files here.
Detected
INI
Keys
10
Sections
3
Visible
10
Warnings
0
Sensitive?
1
Lines
16
Size
226 B
No obvious config syntax warnings detected.
Viewer
Showing 10 parsed values from detected INI config.
| Line | Section/path | Key | Value | Type |
|---|---|---|---|---|
| 2 | global | APP_NAME | FreeProTool | text |
| 3 | global | APP_ENV | development | text |
| 4 | global | DEBUG | true | boolean-like |
| 5 | global | PORT | 3000 | number-like |
| 8 | database | host | localhost | text |
| 9 | database | user | app_user | text |
| 10 | database | password | change-me | possibly sensitive |
| 11 | database | ssl | false | boolean-like |
| 14 | features | json_formatter | enabled | boolean-like |
| 15 | features | svg_viewer | enabled | boolean-like |
What this tool does
Config File Viewer opens common configuration files in one simple workspace, so you do not need a different tool for every format. Drop in a config and read its structure clearly, whether it is keys and values, sections, or nested settings, right in your browser.
How it works
Paste text or open a configuration file. The viewer detects common formats, extracts settings into a table, and offers source, JSON, and normalized views. Search keys and values or review warnings before exporting. JSON and XML use their corresponding parsers; other formats use lightweight line-based inspection, so this is not a replacement for an application-specific validator.
When to use Config File Viewer
Reading a config file without the matching app
Checking settings across different config formats
Reviewing a dotfile or settings file quickly
Opening a config on a machine with no editor set up
FAQ
When should I use INI Viewer instead?
Choose INI Viewer when you want to focus on INI sections, duplicate keys, comments, and source lines. Use Config File Viewer to inspect mixed configuration formats in one workspace.
Is there a tool for a specific format?
Yes. See the INI, YAML, JSON, and XML viewers for those.
Are my files uploaded anywhere?
No. The file is read in your browser and never leaves your device.