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Developer Tools
That Actually Work
Format JSON, generate UUIDs, test regex, decode JWTs — all in your browser. No accounts, no tracking, no backend. Just the tool, right now.
15+Tools
100%Client-side
0Signups needed
Format Converters
JSON Formatter & Validator
Prettify, minify, and validate JSON with error highlighting.
JSON to CSV
Convert a JSON array of objects to CSV instantly. Headers auto-detected. Handles quoted fields and commas.
CSV to JSON
Parse any CSV into a JSON array of objects. First row becomes the keys. Handles quoted fields.
JSON to XML
Convert JSON objects and arrays to valid XML. Recursive nesting, proper declaration, pretty-printed.
XML to JSON
Parse XML and convert to clean JSON. Handles attributes, arrays of same-named elements, CDATA.
JSON to YAML
Convert JSON to human-readable YAML. Handles nested objects, arrays, nulls, and booleans.
YAML to JSON
Convert YAML back to strict JSON. Handles multi-line strings, anchors, and aliases.
Base64 Encode
Encode strings or files to Base64. Full Unicode support.
Base64 Decode
Decode Base64 strings and JWT payloads. Handles base64url automatically.
URL Encode / Decode
Percent-encode URLs and decode encoded strings.
Coming soon
Generators
UUID Generator
Generate RFC-4122 UUID v4 identifiers. Bulk up to 1,000.
UUID v7 Generator
Time-sortable UUIDs for modern distributed systems.
SHA-256 Hash
Hash any text with SHA-256 via Web Crypto API. Client-side only.
MD5 Hash
Compute MD5 hashes. Includes security guidance on correct use.
Password Generator
Strong, configurable passwords with entropy meter. Uses Web Crypto API for CSPRNG.
API Key Generator
Prefixed API keys in the style of sk_live_ or pk_test_. Custom prefix, length, alphabet.
Checkers & Testers
Regex Tester
Test regular expressions with live match highlighting, named groups, and replace mode.
Cron Expression Parser
Parse cron syntax into plain English and show next 10 run times.
JWT Decoder
Decode JWT header, payload, and signature (no verification).
JSON Diff Viewer
Side-by-side diff of two JSON documents. Normalizes both inputs before diffing — structural changes only, no whitespace noise.
Text Diff Checker
Compare any two texts side by side with Myers diff. Additions in green, deletions in red, line numbers on both sides.
JSON Tree Viewer
Explore JSON as an interactive collapsible tree. Search keys, expand/collapse nodes, copy JSON paths to clipboard.
Why DevTools by Infinfy?
Privacy by design
Every tool runs entirely in your browser. Your data never leaves your machine. We can't see it — we don't want to.
Built for speed
No spinner, no API call, no “processing…”. Paste your input, get your output. That's it.
We explain the spec
Every tool comes with a write-up that actually explains the format, common gotchas, and when you'd use it in production.
Built by developers
These are tools we built because we needed them ourselves. We know what 2am debugging feels like.