Beast500+ free tools
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Client-side SEO, fingerprint, proxy, and developer utilities. Fast, private, and 100% free.
Developer & Coding
26 ToolsAdvanced JSON Formatter & Prettifier
Prettify, minify, validate, tree-view, and repair JSON strings client-side.
JSON Syntax Error Validator
Locate exact line numbers and syntax errors in JSON data payloads.
JSON Visual Diff & Comparison Tool
Compare two JSON objects side-by-side to highlight added/removed keys.
Base64 Encoder & Decoder
Convert plain text, JSON, and binary data into Base64 encoded strings.
JWT (JSON Web Token) Decoder
Decode JWT headers, payload claims, and expiration timestamps client-side.
JWT Token Builder & Payload Generator
Construct sample JWT tokens for API testing without sending secret keys.
RFC4122 UUID v4/v7 & Secret Key Generator
Generate cryptographically secure v4/v7 UUIDs and API keys in bulk.
UUID Syntax & Version Validator
Verify if a string is a valid RFC4122 UUID (v1, v3, v4, v5, v7).
Regex Live Tester & Pattern Matcher
Test regular expressions live with flags, match highlighting, and groups.
Regex Pattern Builder
Build regular expressions for email, IP, URL, phone number, and password rules.
SQL Query Formatter & Beautifier
Format, indent, and prettify SQL queries for MySQL, PostgreSQL, and SQLite.
SQL Query Minifier
Compress multi-line SQL scripts into compact single-line strings.
HTML5 Markup Formatter & Prettifier
Format raw unindented HTML code into clean nested trees.
CSS Style Sheet Formatter
Format messy minified CSS stylesheets into clean readable rules.
JavaScript Code Formatter
Indent and beautify minified JS code into readable lines.
XML Document Formatter
Format raw XML documents with custom spacing.
YAML Formatter & Indentation Checker
Format YAML configuration files and validate indentations.
CSV to JSON Converter
Convert CSV spreadsheet files and text tables into structured JSON arrays.
JSON to CSV Converter
Flat JSON arrays of objects into downloadable CSV spreadsheet files.
JSON to XML Converter
Transform JSON data trees into valid XML element structures.
XML to JSON Converter
Convert XML documents into readable JSON payloads.
Markdown Live Editor & HTML Previewer
Write Markdown with real-time rendered HTML preview and instant copying.
Markdown to Clean HTML Converter
Convert GFM text into semantic HTML markup.
Cron Expression Builder & Explainer
Build standard 5-part cron schedule expressions interactively.
Unix Timestamp Converter & Clock
Convert Unix epoch timestamps to human-readable dates and vice versa.
ISO 8601 Date & Timestamp Converter
Convert dates between ISO 8601, UTC, GMT, and local timestamps.
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Web tools give you basic insights, but real profile isolation requires real browser isolation. BeastBrowser configures over 50+ hardware & browser fingerprints, isolates cookies, and manages proxies per account.
Frequently Asked Questions
Are all 500+ tools on BeastBrowser 100% free?
Yes! Every single tool in our collection of 500+ online tools is 100% free to use with zero registration, no usage caps, and no credit card required.
Is my input data private when using these tools?
Yes. All calculations, text processing, formatting, JWT decoding, and fingerprint inspections run pure client-side JavaScript inside your local browser. Your data never touches any server.
How do these free tools relate to the BeastBrowser app?
These tools help digital marketers, media buyers, developers, and SEO professionals optimize campaigns and inspect browser behavior. For full multi-profile isolation, dedicated proxies, and hardware browser identity control, download the BeastBrowser desktop application.
