Category
Free Developer Tools
Format, decode, inspect, and convert common developer data without sending it to a server.
JSON Formatter & Validator
Paste JSON or open a file to format, validate, beautify, or minify it. Choose indentation, review parser errors, and copy or download the result in your browser with no login.
Open toolRegex Tester
Test a JavaScript regular expression against sample text. Inspect matches, indexes, capture groups, flags, and syntax errors before using the pattern in code.
Open toolFree Base64 Encoder & Decoder Online
Encode or decode UTF-8 and URL-safe Base64 text online. Paste a value, copy the result, or download it from your browser without registration or login.
Open toolFree Unix Timestamp Converter Online
Convert Unix timestamps in seconds or milliseconds to UTC, local time, or ISO 8601. Convert dates back to timestamps online with no registration or login.
Open toolFree URL Encoder & Decoder Online
Encode or decode URL components, full URLs, and query parameters with UTF-8 percent encoding. Copy the result online without registration or login.
Open toolJWT Decoder
Inspect JWT headers, payloads, claims, expiry times, and signature segments in your browser. Decode locally with no login; this tool does not verify signatures.
Open toolUUID Generator
Generate one random UUID v4 or a batch of up to 100 in your browser. Choose canonical, uppercase, GUID-braced, or compact display, then copy individual values or export the full list as TXT, CSV, or JSON with no registration or login.
Open toolHash Generator
Use this hash generator to create a SHA digest from exact UTF-8 text or one local file. Choose SHA-256, SHA-384, SHA-512, or legacy SHA-1, then compare, copy, or download the result as hex or Base64 without sending the source to an external hashing service.
Open toolJSON to CSV Converter
Paste one JSON object or an array of objects, or load a local .json file. Choose the delimiter, preview the rows and columns, and copy or download the CSV without registration or login.
Open toolCSV to JSON Converter
Paste CSV or load one local .csv or .txt file, choose the delimiter and JSON format, then convert the header row and records into a JSON array. Quoted fields are parsed in your browser, values stay strings, and no registration or login is required.
Open toolURL Slug Generator
Turn a title, product name, or page label into a readable URL slug in your browser. Choose the separator, case, character policy, stop-word rule, and optional length cap, then copy the slug or a slash-prefixed path with no registration.
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