TOOL CATEGORY
Developer & Data
Formatters, validators, encoders and data transformers.
CATEGORY WORKSPACES
Ready in this category.
Base64 Decoder
Decode strict standard Base64 to valid UTF-8 text locally.
Base64 Encoder
Encode UTF-8 text as standard Base64 using browser APIs.
Cron Expression Builder
Validate five cron fields and build a transparent expression with its plain-language schedule.
CSS Formatter
Parse and format CSS locally with clear syntax errors.
CSV Column Mapper
Rename selected CSV columns with an explicit source-to-target mapping.
CSV Delimiter Converter
Convert bounded CSV between comma, semicolon, tab, and pipe delimiters safely.
CSV Duplicate Finder
Find duplicate CSV records by selected columns and preserve source row numbers.
CSV to JSON
Convert header-based CSV to a formatted JSON record array without uploading it.
cURL to Code
Convert one bounded cURL request to JavaScript, Python, or PHP while redacting credentials.
DNS Record Lookup Helper
Build validated dig, nslookup, and DNS-over-HTTPS references without making a DNS request.
Epoch Batch Converter
Convert up to one thousand timestamp lines into a downloadable CSV report.
Hash Generator
Create SHA-256, SHA-384, or SHA-512 text fingerprints with Web Crypto.