Clean API data
Format JSON, convert CSV, inspect JWTs, and validate snippets before sharing.
All Developer Utilities - Free Browser Based File Converter & Editor
JSON, Base64, hash, UUID & more. Free browser-local tools with no upload and no signup.
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Popular workflows
Encode and verify values
Encode Base64 or URLs, generate hashes, and create UUIDs for tests or documentation.
Prepare developer handoffs
Convert JSON to TypeScript, format SQL, test regex, or parse cron schedules.
Common tasks
- Format, validate, and copy structured data.
- Encode, decode, and hash developer values.
- Generate identifiers and test strings quickly.
- Convert snippets into implementation-ready formats.
All tools in this category
JSON Formatter Format, validate, and copy readable JSON snippets Base64 Encoder Decoder Encode or decode Base64 text locally URL Encoder Decoder Encode and decode URL components safely Hash Generator Generate SHA and MD5 hashes for text snippets UUID Generator Generate UUIDs and ULIDs for tests or documentation JWT Decoder Decode JWT header and payload without sending tokens anywhere Regex Tester Test regular expressions against sample text locally Cron Parser Explain cron schedules and preview upcoming run times CSV JSON Converter Convert CSV to JSON or JSON arrays back to CSV JSON to TypeScript Generate TypeScript interfaces from JSON samples in your browser YAML JSON Converter Convert YAML to JSON and JSON to YAML for config snippets SQL Formatter Format SELECT, JOIN, INSERT, UPDATE, and DELETE SQL statements HTML Escape and Unescape Escape HTML entities or decode escaped HTML text locally Markdown to HTML Convert common Markdown headings, links, emphasis, and lists to HTML XML Formatter Format XML markup with readable indentation in your browser JSON Schema Validator Validate JSON data against required fields and simple JSON Schema rules