Format JSON, decode JWTs, generate UUIDs and hashes, test regex, encode URLs and Base64. Everything is offline-capable in your browser, so tokens and code never leave the tab.
Click any tool to launch it instantly — nothing installs and nothing uploads.
Format and validate JSON
Encode and decode Base64 strings
Pretty print SQL queries
Decode and parse JWT tokens locally
Encode and decode URLs
Test and validate regular expressions live
Format or minify code
Generate UUID/GUID
Generate MD5, SHA hashes
Convert YAML to JSON and JSON to YAML
Format, minify, and validate XML
Convert XML to JSON and JSON to XML
Parse and explain cron expressions
Related tools
These related tools often appear in the same workflow and help visitors discover more ways to complete their task.
Decode and parse JWT tokens locally
Convert YAML to JSON and JSON to YAML
Convert CSV to JSON format
Encode and decode Base64 strings
Format and validate JSON
Generate MD5, SHA hashes
Encode and decode URLs
Convert XML to JSON and JSON to XML
Most online developer tools have the same problem: you paste a JWT, a SQL query or a snippet of JSON into a textarea, and it gets sent to someone else's server for processing. Half the time that snippet is from production — it contains a real token, a real user ID, or a query that hints at your schema. UtilsGo's developer tools fix that by running every transformation in your browser.
The set is built around the things developers reach for several times a week. The JSON Formatter pretty-prints, validates, sorts keys, and minifies. The JWT Decoder parses the header and payload from a token and shows the claims (without verifying the signature, which would require the secret). The Regex Tester runs your pattern against test input and highlights matches and groups in real time.
Encoders cover Base64 (both directions, with file support), URL encoding and decoding, and a Hash Generator that produces MD5, SHA-1, SHA-256 and SHA-512 digests from text or files. The UUID Generator creates v4 and v7 IDs in bulk. The SQL Formatter and Code Beautifier handle the boring formatting work for SQL, JavaScript, TypeScript, JSON, HTML and CSS.
These utilities are especially useful for front-end developers, API integrators, QA engineers, analysts and anyone who wants fast formatting and decoding without handing sensitive payloads to a third-party service. They are great for debugging payloads, comparing regex patterns, and generating test data for apps, scripts or databases.
Because the work is local, you can safely paste production tokens, sample API responses and internal SQL into any of these tools without worrying about where the text goes.
JWTs, API responses and SQL pasted in stay in your browser. No outbound request, no server-side log.
Hashes, encoders and formatters use the standard algorithms — your output matches `openssl`, `jq` and the browser's own crypto API.
Generate hundreds of UUIDs or hashes at once. Beautifiers handle large files without truncating output.
Reach for one URL instead of switching to an IDE plugin, a CLI tool or a paid web app.
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