Free Browser-Based Tools
A complete suite of privacy-first, 100% client-side developer utilities. No installation, no sign-up, and your data never leaves your browser.
Text Tools
4Everything you need to manipulate and format text locally.
Word Counter
Live word, character, sentence & paragraph counts with reading time.
Lorem Ipsum Generator
Generate placeholder text instantly for your mockups and designs.
Case Converter
Easily convert text between upper, lower, title, and sentence cases.
Line Counter
Count lines, paragraphs, and empty spaces in large text files.
Dev Tools
7Developer utilities for encoding, formatting, and debugging.
JSON to YAML Converter
Convert JSON to YAML online, free, no signup. Instant, secure formatting.
JSON Formatter
Format, validate, and beautify your JSON payloads instantly in the browser.
YAML to JSON Converter
Instantly convert YAML configurations back into strict JSON format.
Base64 Encoder
Quickly encode or decode strings into Base64 format locally.
JWT Decoder
Decode JSON Web Tokens and inspect claims securely without servers.
URL Encoder
Safely encode or decode URLs and URI components instantly.
Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes locally in your browser.
Utility Tools
4Everyday helpers for formatting, converting, and testing.
Regex Tester
Test and debug regular expressions with live highlights.
UUID Generator
Generate cryptographically secure v4 UUIDs instantly.
CRON Parser
Translate CRON expressions into human-readable schedules.
Diff Viewer
Compare two strings or files to see the exact differences.
Design Tools
3Tools for working with colors, SVGs, and styles.
Missing a tool you need?
We are constantly expanding our library of utilities. Let us know what you'd like to see next!
Request a ToolFrequently Asked Questions
Are these tools entirely free?
Yes, all our browser-based tools are completely free to use with no hidden fees, limits, or premium tiers.
Do I need to create an account?
No sign-up is required. We believe in removing friction, so you can access all utilities instantly without providing any personal information.
Is my data safe when using these tools?
Absolutely. Every utility on this platform runs 100% client-side. This means processing happens entirely in your local browser, and your sensitive data is never uploaded to any servers.