Fenlo
Fenlo
Simple online tools, ready in your browser.
Fenlo is a free set of simple utilities for viewing, formatting, and converting data. Everything runs locally in your browser — useful whether you write code or just need a quick helper.
Why Fenlo
01
Runs in your browser
Open a tool and start. No install, no account, no waiting.
02
Private by default
Your data stays on your device. Fenlo does not upload files to a server.
03
Built for everyday tasks
View JSON, encode text, generate IDs — small jobs done in a few clicks.
04
Growing toolkit
JSON Viewer is live today. More Fenlo tools will be added over time.
Tools
Start with JSON Viewer. More Fenlo tools are on the way.
Available
JSON Viewer
Paste, format, and inspect JSON locally in your browser.
Coming soon
JSON Formatter
Pretty-print JSON with consistent indentation.
Coming soon
JWT Decoder
Decode JSON Web Tokens without sending them anywhere.
Coming soon
Base64 Encoder
Encode and decode Base64 strings instantly.
Coming soon
UUID Generator
Generate unique identifiers in one click.
Your data stays private
Fenlo tools run on your computer. Your files and text are not uploaded to our servers, so you can use them without sharing the contents.