Free browser tools for JSON, regex, JWT, XML, diff, and everyday debugging
Work with JSON, compare text, inspect tokens, test regular expressions, and convert common technical payloads directly in your browser without installing anything.
Useful browser tools for common developer tasks
Some technical tasks are too small for a full local setup but still happen every day. This section brings together practical browser tools for formatting, validating, comparing, decoding, and testing common technical input.
- Tools are grouped by real workflows such as JSON handling, text comparison, encoding, and scheduling.
- Each utility is meant to solve a common task quickly with a clean interface and immediate feedback.
- Each page includes usage guidance so it is useful for both first-time visitors and regular users.
Readable input
Paste raw payloads, compare text blocks, and test syntax without leaving the browser.
Practical feedback
See syntax validity, copy clean output, and spot changes without setup overhead.
Focused technical toolkit
Find the right utility faster with a section built around common debugging and content-cleanup tasks.
Browse by developer workflow
Browse tools by the kind of work you are doing, whether that means formatting payloads, validating input, inspecting tokens, comparing text, or building schedules.
Data and Text Tools
3JSON Formatter, JSON Validator, XML Formatter
Comparison Tools
1Diff Checker
Pattern and Parsing Tools
1Regex Tester
Encoding Tools
2Base64 Decoder and Encoder, URL Encode and Decode
Scheduling Tools
2Cron Builder, Unix Timestamp Converter
Auth and Security Tools
1JWT Decoder
Browse the current tools
Start with the utility you need right now, whether you are formatting payloads, comparing text, decoding tokens, or building schedules.
JSON Formatter
Format, beautify, and minify JSON instantly in your browser with copy, clear, and sample actions.
JSON Validator
Validate JSON syntax in the browser, catch parsing errors, and inspect example payloads without switching tools.
Diff Checker
Compare two blocks of text side by side, highlight additions and deletions, and copy the updated version quickly.
Regex Tester
Test regular expressions in the browser, highlight matches instantly, and experiment with common flags without switching tools.
Base64 Decoder and Encoder
Encode plain text to Base64 or decode Base64 back to readable text with quick copy, sample, and clear actions.
Cron Builder
Build common cron expressions for minute, hourly, daily, weekly, and monthly schedules with a plain-language summary.
XML Formatter
Format, tidy, and minify XML in the browser for easier reading, debugging, and copy-paste workflows.
URL Encode and Decode
Encode and decode URLs, query strings, and parameter fragments instantly in the browser.
JWT Decoder
Decode JWT headers and payloads in the browser to inspect claims, timestamps, and token structure quickly.
Unix Timestamp Converter
Convert Unix timestamps to readable date-time values and generate epoch time from normal date inputs.