Format data before debugging
JSON, text, and encoding tools make payloads easier to read before you compare API responses, logs, or documentation snippets.
17 tools
Developer tools for encoding, formatting, timestamps, and debugging
Use these utilities to encode, decode, format, convert, and inspect common values you run into while building, debugging, and documenting software.
Encoding and decodingFormatting and parsingTime, size, and text conversions
Practical guide
How to use these developer tools
Developer utilities are built for quick inspection and formatting tasks that interrupt implementation work. They are intentionally narrow: paste a value, transform it, inspect the output, and copy the result without sending the main input to a backend for calculation.
Translate values between systems
Timestamp, file-size, URL, and Base64 utilities help when two tools expect different representations of the same value.
Prepare implementation snippets
Slug, header, and escaping helpers reduce repetitive manual transformations while keeping the result visible for review.
Before you rely on a result
- Avoid pasting production secrets or personally identifiable data into browser tools unless you are comfortable with local device exposure.
- Verify encoded or decoded values against the receiving system's exact requirements.
- Keep formatted output under version control when it becomes part of production configuration.
Common mistakes to avoid
- Assuming every Base64 value is encrypted rather than only encoded.
- Ignoring timezone context when comparing timestamps.
- Copying formatted data without validating it against the target parser.
Tool library
Choose a calculator or utility
Base64 Encoder
Encode plain text into Base64 for transport, embedding, or debugging workflows.
Open
Base64 Decoder
Decode a Base64 string back into readable plain text for debugging or inspection.
Open
URL Encoder
Percent-encode text for safe use inside query strings, paths, or redirect parameters.
Open
URL Decoder
Decode percent-encoded text back into a readable URL segment or query value.
Open
Hash Generator
Generate a cryptographic hash from plain text using common SHA algorithms.
Open
JWT Expiration Viewer
Decode a JSON Web Token payload and inspect its issued-at and expiration timestamps without sending the token anywhere.
Open
Cron Expression Explainer
Parse a standard cron expression and turn it into a plain-English schedule explanation.
Open
JSON Formatter
Pretty-print raw JSON into readable, indented output for debugging, documentation, or handoff work.
Open
JSON Minifier
Compress formatted JSON into a compact one-line string for payloads, fixtures, or transport.
Open
Unix Timestamp Converter
Convert a Unix timestamp into a readable date or turn a date into a Unix timestamp for debugging and integration work.
Open
Response Time Converter
Convert response times between microseconds, milliseconds, seconds, and minutes.
Open
Time Duration Calculator
Convert a time duration into alternate units and summarize the same length of time in a more readable form.
Open
File Size Converter
Convert storage sizes between bytes, KB, MB, GB, and TB using consistent binary scaling.
Open
Data Transfer Converter
Convert throughput or transfer values between bits, bytes, and their larger units.
Open
Regex Escape Tool
Escape special regular-expression characters in plain text so the string can be used literally in a regex pattern.
Open
UUID Validator
Validate whether a string looks like a UUID and identify the version when possible.
Open
URL Slug Generator
Turn a title or phrase into a clean, lowercase URL slug suitable for paths and content publishing.
Open