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Free Developer Tools Online

All Developer Tools
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Base64 Encode / Decode
Encode text or files to Base64 and back
FREE
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URL Encode / Decode
Encode and decode percent-encoded URL strings
FREE
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QR Code Generator
Create QR codes from any URL or text
FREE
🔤
Word Counter
Count words, characters, and sentences
FREE
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JSON Formatter
Pretty print and validate JSON data
FREE
🔐
Password Generator
Generate strong, secure random passwords
FREE
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Timestamp Converter
Convert Unix timestamps to dates and back
FREE
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Text Case Converter
Uppercase, camelCase, snake_case and more
FREE
Lorem Ipsum Generator
Generate placeholder text for mockups
FREE
🎨
Color Picker
Pick colors and convert HEX, RGB, HSL
FREE
📝
Markdown Editor
Write Markdown and preview rendered HTML live
FREE
🔍
Regex Tester
Test regular expressions with live highlighting
FREE
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HTML Entity Encoder
Encode and decode HTML entities instantly
FREE
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CSS Minifier
Compress or beautify CSS code instantly
FREE
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Base Converter
Convert between binary, octal, decimal and hex
FREE
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Time Zone Converter
Convert time between any two world time zones
FREE
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Hash Generator
MD5, SHA-1, SHA-256 & SHA-512
FREE
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Text Diff Checker
Compare two texts and highlight changes
FREE
JWT
JWT Decoder
Decode JSON Web Tokens — header, payload, claims
FREE
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Cron Expression Generator
Build cron schedules and preview next run times
FREE
About These Tools

ToolsPix developer tools are built for the everyday tasks that slow down a programming workflow — encoding a string, validating a JSON payload, decoding an auth token, testing a regular expression, or checking what changed between two versions of a config file. Every tool runs entirely in your browser with no backend, no account, and no telemetry.

The collection spans encoding and decoding (Base64, URL encode, HTML entities), text utilities (Markdown editor, word counter, case converter, diff checker), security tools (hash generator, password generator, JWT decoder), scheduling (cron expression generator), and general utilities (JSON formatter, regex tester, CSS minifier, QR code generator).

All 20 tools are free with no usage limits. Because they are client-side, they are safe to use with sensitive tokens, credentials, or internal data — nothing is logged or transmitted.

Frequently Asked Questions
Yes. All tools run entirely in your browser — no data is sent to any server. You can verify this by opening your browser's Network tab while using any tool: you will see zero outbound requests related to your input.
Open the Base64 Encode / Decode tool, paste your Base64 string into the Decode tab, and the plain text output appears instantly. The tool handles both standard Base64 and URL-safe Base64 variants.
Yes. The JSON Formatter tool parses your JSON, highlights any syntax errors with their line number, and pretty-prints valid JSON with configurable indentation. It also supports minifying JSON back to a single line.
Open the Cron Expression Generator, set each field (minute, hour, day, month, weekday) using the inputs or preset buttons. The tool generates the cron expression in real time, shows a plain-English description, and lists the next 5 scheduled run times.
The Hash Generator supports MD5, SHA-1, SHA-256 and SHA-512. You can hash plain text or upload a file and get all four hashes simultaneously for easy comparison.