UUID Version 4 Generator
UUID Version 4 Generator
Generate independent UUIDs with PHP cryptographic randomness.
Random record identifiers help separate new entries without relying on a sequential label.
Generate the required UUIDs and check how they will be stored in the receiving system.
How to use UUID Version 4 Generator
- Choose output case. Enter number of UUIDs.
- Select Process input. Read the returned values alongside the assumptions below before copying, exporting or acting on the result.
Why choose this tool?
Version and variant bits follow the UUID v4 format with cryptographic randomness.
Before you use the result
UUIDs use random_bytes, version 4 and RFC variant bits. They are identifiers, not authentication secrets.
Questions about UUID Version 4 Generator
Can a UUID replace an authentication secret?
No. These are identifiers. Authorization and database uniqueness still need their own controls.
What should I check before using UUID Version 4 Generator?
Check Number of UUIDs and Output case. Use the exact units shown beside the controls and replace any example values with your own inputs.
Related Tools
Explore the other tools in this collection.
Base64 Encoder & Decoder
Encode UTF8 text, decode strict Base64 and inspect binary results as hex.
Open toolCSV Cleaner & Deduplicator
Trim cells, remove duplicate records and reserialize quoted CSV.
Open toolCSV Column Selector
Select named columns in your chosen order without losing cell values.
Open toolCSV Dataset Merger
Append two CSV datasets with exactly matching header order.
Open toolCSV Numeric Column Statistics
Summarise an explicitly selected numeric column and report blank values.
Open toolCSV to JSON
Convert a header based CSV into JSON while preserving every cell as text.
Open toolCSV to SQL INSERT Builder
Generate quoted INSERT statements for review without executing SQL.
Open toolData Size Unit Converter
Compare decimal byte units with binary byte units.
Open toolDuplicate Line Remover
Keep the first occurrence of each line with optional case and whitespace rules.
Open toolExact Number Base Converter
Convert signed integer strings across bases 2 to 36 without float rounding.
Open toolHEX RGB HSL Color Converter
Convert a six or three digit HEX color, RGB channels or HSL values.
Open toolHMAC Signature Generator
Create a keyed SHA256 or SHA512 HMAC from an exact message.
Open toolHTML Entity Encoder & Decoder
Escape HTML characters or decode HTML5 entities into plain displayed text.
Open toolHTML to Plain Text
Extract text from pasted HTML with block spacing and script content removed.
Open toolIPv4 CIDR Subnet Calculator
Show network, mask, address range and conventional host capacity.
Open toolJSON Formatter & Validator
Validate, format or compact JSON without rounding its number tokens.
Open toolJSON Pointer Explorer
Read a nested value using an RFC 6901 pointer and inspect its children.
Open toolJSON Structure Diff
Compare JSON nodes by type, value and path, ignoring object key order.
Open toolJSON to CSV
Turn a list of flat JSON objects into a quoted CSV dataset.
Open toolJWT Decoder, Unverified
Read JWT header and payload without verifying the signature or trusting claims.
Open toolLine by Line Text Diff
Compare two texts with an exact line sequence and show additions and removals.
Open toolQuery String Builder
Create an encoded query from an ordered CSV of key and value pairs.
Open toolRegular Expression Tester
Inspect bounded PCRE matches and capture groups on a UTF8 text sample.
Open toolText Case Converter
Apply Unicode case conversion where the installed PHP mbstring supports it.
Open toolText Hash Generator
Calculate checksum digests for the exact UTF8 bytes you enter.
Open toolText Line Sorter
Sort lines naturally, lexically or by numeric values.
Open toolTimezone Date Converter
Convert an explicitly entered wall clock time and flag DST ambiguity.
Open toolUnicode Text Counter
Count UTF8 characters, words, lines and whitespace in English or Urdu text.
Open toolUnix Timestamp Converter
Convert exact whole seconds or milliseconds and inspect UTC and Pakistan time.
Open toolURL Component Encoder & Decoder
Encode a URL component or decode percent escapes without fetching a URL.
Open toolURL Component Inspector
Inspect a URL and its ordered query pairs, preserving duplicate keys.
Open tool