All Free Online Tools
Explore privacy-first, browser-based utilities for developer work, files, text, and fitness.
Available Tools
JSON Formatter
Validate and beautify JSON strings.
Excel Batch Splitter
Split Excel sheets into batches with repeated header rows.
Text & File Inspector
Count words, estimate reading time, and extract text from documents.
HIIT Cycling
A high-intensity interval training companion for stationary cycling.