Free Online Tools — No Signup, No Uploads | Free AI Atlas
Free browser-based tools for writing, text processing, development, and everyday tasks. Each tool includes its own landing page with features, usage guidance, and who it’s designed for.
Text
Writing
Developer
JSON Formatter
Beautify, validate, and minify JSON right in your browser — nothing is uploaded.
Base64 Encode / Decode
Encode text to Base64 or decode Base64 back to plain text, instantly and offline.
JSON Validator
Validate JSON syntax and structure with instant error reporting.
URL Encoder & Decoder
Encode and decode URLs for safe links and query strings.
JWT Decoder
Decode JSON Web Tokens to inspect their payload and header.
Hash Generator
Create hashes for text using popular algorithms like MD5 and SHA-256.
Unix Timestamp Converter
Convert between Unix timestamps and readable date/time values.
Regex Tester
Test regular expressions against sample text with instant results.
CSV to JSON Converter
Transform CSV data into JSON for APIs, apps, and data workflows.
HTML Entity Encoder
Encode text into HTML entities to keep markup safe and intact.
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