Choose a focused tool from this category, test representative input, and review the generated result before continuing your workflow.
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Generator
ONLINE
Free Online Generator Tools
Generate passwords, UUIDs, tokens, hashes, keys, schemas, and other reusable values online.
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API Key Generator
Generate secure API keys with configurable length, prefix, quantity, and URL-safe, hexadecimal, Base32, or alphanumeric formats.
BCrypt Hash Generator
Generate a salted 60-character BCrypt password hash, choose cost 4–15, inspect its parts, measure runtime, and verify it immediately.
Basic Auth Header Generator
Basic Auth Header Generator creates an HTTP Authorization header by Base64-encoding a username and password for controlled API and server testing.
CORS Header Generator
Generate validated CORS response headers for one origin, methods, request headers, exposed response headers, credentials, and preflight caching.
CRC32 Generator
Generate CRC32 checksums from exact text in hexadecimal and decimal formats for compatibility checks, fixtures, archives, and data-transfer testing.
CSP Policy Builder
Build a Content-Security-Policy header with presets, source directives, Report-Only mode, security warnings, and copy-ready HTTP, nginx, Apache and meta-tag output.
Cron Expression Builder
Build and validate five-field cron expressions with presets and human-readable explanations.
Cron Expression Generator
Generate standard five-field cron expressions for hourly, daily, weekday, weekly, monthly, or custom schedules.
HMAC Generator
Generate keyed HMAC digests from a message and secret using SHA-256, SHA-384, or SHA-512, with clear hexadecimal output for testing integrations.
HTTP Header Builder
Build validated HTTP request and response header blocks for APIs, security, caching, CORS, and content negotiation.
HTTP Request Builder
Build a complete HTTP request and matching cURL command from structured fields.
Hash Generator
Use this free Hash Generator to create MD5, SHA-1, SHA-256, and SHA-512 hashes from text, verify exact input, and copy results online.
JSON Schema Generator
Generate a JSON Schema from sample JSON online. Choose Draft 4, 6, 7, 2019-09 or 2020-12, infer nested types and detect common string formats.
JWT Generator
Create signed HS256 JSON Web Tokens.
MCP Tool Schema Generator
Generate a minimal MCP tool definition and Draft 2020-12 inputSchema from a tool name, description, and representative JSON arguments.
MD5 Generator
Use this free MD5 Generator to generate a MD5 hash from exact text, verify whitespace and encoding, and copy a clean hexadecimal digest online.
OpenAPI Generator
Generate an OpenAPI 3.1 document from endpoint settings and JSON request or response samples.
Password Generator Advanced
Generate 1–100 secure random passwords with 8–256 characters, selectable character sets, similar-character removal, and custom exclusions.
RSA Key Generator
Generate RSA public and private key pairs in PEM format with selectable key sizes and optional passphrase protection.
Random Password Generator
Generate strong random passwords with a chosen length for accounts, test data, temporary credentials, and security-focused workflows.
Regex Builder
Build practical regular expressions from common matching requirements.
SHA1 Generator
Use this free SHA1 Generator to generate a SHA-1 hash from exact text, verify whitespace and encoding, and copy a clean hexadecimal digest online.
SHA256 File Checksum Generator
Calculate a SHA-256 checksum for any local file or exact text, then compare it with a published 64-character digest without uploading the file.
SHA512 Generator & SHA256 Comparison
Generate a 128-character SHA-512 digest for long text or hexadecimal key material and compare it with SHA-256 calculated from the same bytes.
SSH Key Generator
Generate an RSA SSH public and private key pair with selectable strength, OpenSSH public-key output, and a SHA-256 fingerprint.
Secure Random Generator
Generate cryptographically secure random bytes, strings, URL-safe values, and integers for development and security workflows.
System Prompt Builder
System Prompt Builder turns one plain-language task into a structured, ready-to-copy system prompt with an automatically selected role, operating rules, safeguards, quality checks, and output requirements.
Token Generator
Generate secure session, CSRF, URL-safe, hexadecimal, and Base64 tokens from cryptographically secure random bytes.
URL Query Builder
URL Query Builder creates RFC 3986 encoded query strings and complete URLs from readable name and value pairs.
UUID Generator
Generate cryptographically secure UUID v4 or time-ordered UUID v7 identifiers online, one at a time or in bulk, with canonical, uppercase, brace and compact output formats.
cURL Builder
Build secure cURL commands for HTTP requests with methods, headers, query parameters, authentication, and request bodies.
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About this category
What you can do with Generator tools
Trexmi generator tools create useful output from clear inputs and settings. Generate passwords, UUIDs, API keys, tokens, hashes, checksums, schemas, and other reusable values without building a one-off script for every task.
Generator tools help you complete focused browser-based tasks without installing a separate application or building a complicated workflow. Choose the utility that matches the job, provide the required input, review the output, and continue working immediately.
This directory brings together 31 currently available generator tools in one place. Use the live search and sorting controls to compare utilities by name, purpose, popularity, or recent updates, then open the most relevant option directly from the grid.
The collection is useful for quick one-off work as well as repeatable professional tasks. Clear descriptions explain what each generator tool does before you open it, helping you avoid unnecessary steps and choose a more efficient workflow.
Common workflows
01Generate strong passwords and random tokens
02Create UUIDs and API keys
03Generate hashes and checksums
04Build schemas and structured output
05Create reusable values for development workflows
Popular ways to use Generator tools
Choose a focused tool from this category, test representative input, and review the generated result before continuing your workflow.
Choose a focused tool from this category, test representative input, and review the generated result before continuing your workflow.
Choose a focused tool from this category, test representative input, and review the generated result before continuing your workflow.
Choose a focused tool from this category, test representative input, and review the generated result before continuing your workflow.
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Useful answers
Questions people ask before using the tools
Clear answers about access, limits, privacy, and choosing the right workflow.
What are generator tools?
Generator tools are focused browser utilities that help complete a specific task without installing a desktop application or building a custom workflow.
Are Trexmi generator tools free?
Most tools can be opened and tested for free. Account and PRO limits apply only where a larger workload or additional usage allowance is required.
Do generator tools upload my data?
Each tool explains its processing model on the page. Browser-based tools process locally where possible, while server processors use the submitted input only to produce the requested result.
How do I choose the right generator tool?
Start with the exact output you need, compare the descriptions in the directory, then test the most relevant tool with representative input before using the result in production.
Can I use these tools for professional work?
Yes. They are designed for repeatable development, content, data, QA, office, and technical workflows, but important output should still be reviewed before production use.
Will more generator tools be added?
Yes. Trexmi expands existing categories as new focused workflows are implemented and tested.