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Security tool
Generate secure random tokens.
Random String Generator creates high-entropy tokens with crypto.getRandomValues in your browser. Choose a length from 4 to 128 and get URL-safe-ish random strings from a clear alphanumeric plus -/_ alphabet—useful for API keys in dev, nonces, and invite codes.
Many systems need opaque random identifiers: session-like tokens in demos, webhook secrets in staging, filename suffixes, or one-time codes. This tool fills that gap without a server round-trip. Bytes from the Web Crypto secure RNG are mapped onto a fixed character set (A–Z, a–z, 0–9, hyphen, underscore) so outputs are easy to paste into configs and URLs.
Random strings are not the same as human-memorable passwords, and they are not encrypted data. Entropy scales with length: short tokens can be brute-forced if exposed as secrets. Prefer 32+ characters for anything that behaves like a secret key in non-trivial systems, and rotate tokens if they leak.
Generation is fully client-side. Still, do not paste existing production API keys or live secrets into the page to “regenerate” or store them—use this tool only to create new random values, then save them in your secret manager or environment vault under your control.
ezToolFlow is operated by Vishvajeet Shukla. For privacy details on browser tools, accounts, and AI features, read our Privacy Policy.
Choose 4–128 characters. Use longer lengths (32+) when the string will act as a secret.
Click Generate. The browser draws secure random bytes and maps them to the allowed character set.
Copy the token into env files, secret managers, or local config—never into public repos or chat if it is a real secret.
Mint throwaway secrets for local development without using production keys.
Create opaque random values for request deduplication or cache keys in prototypes.
Generate random codes for demos, workshops, or internal tooling.
Append short random tails to avoid collisions in exports and temp files.
Tip: after you finish, check Related tools at the bottom of this page for the next step in your workflow.
Quick answers about tools, privacy, limits, and pricing.
Yes. It uses crypto.getRandomValues in the browser, not Math.random.
Uppercase and lowercase letters, digits, hyphen, and underscore—handy for tokens that appear in URLs or env vars.
No. Generation is local. We do not receive the random output as part of the generate step.
For secrets, prefer 32+ characters. Very short strings are fine for non-secret IDs but weak as keys.
Password Generator targets human account passwords with optional symbols and ambiguous-character filtering. Random String focuses on compact opaque tokens with a fixed URL-friendly alphabet.
Yes. Random String Generator is free to use on ezToolFlow. Guests and free accounts may have daily limits on some tools; premium tiers can raise or remove those limits. AI tools may also spend credits.
For browser-based tools, processing runs on your device when possible and files are not uploaded for conversion. Optional accounts, usage limits, and AI features are described in our Privacy Policy.
No for most tools — you can start as a guest. An account helps keep higher daily limits and saved work (for example AI resumes).
Close other heavy tabs, use a smaller input file, and try Chrome or Edge on desktop. Very large files can stress browser memory.
Yes, the page is responsive. Complex media or large PDFs still work better on desktop because of memory and CPU limits on phones.
Keep working with similar free tools — no signup required for most.
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