Generate secrets, UUIDs, timestamp conversions, and text checks directly from the browser.
Create JWT secrets, API keys, URL-safe tokens, UUIDs, timestamp conversions, Base64, SSL certificate reads, YAML / JSON conversion, and quick character or word counts with no server transfer. The first screen shows the value quickly and gets you into action fast.
Generate UUIDs
UUID v4 is generated entirely in the browser. Adjust the settings, then generate your values.
Generated output
Generated UUIDs will appear here.Generator pages
Jump straight to the exact format you need.
Tools are grouped by purpose, so it is easier to spot the right page at a glance.
Generate
7 toolsTools that create values first, including secrets, UUIDs, timestamps, and placeholder images.
NextAuth Secret
For secrets that fit `NEXTAUTH_SECRET` in a NextAuth setup.
API Key
For API secrets and other shared secret values.
URL-safe Token
For URL-friendly tokens that allow only `-` and `_`.
JWT Secret Generator
Generate secure JWT signing secrets directly in your browser.
Webhook Secret Generator
Generate a secure secret for webhook signature verification directly in your browser.
Placeholder Image
Create placeholder images for mockups and layout checks.
UUID Generator
Crea UUID v4 solo en el navegador, copialos en varios formatos y genera muchos a la vez.
Convert
5 toolsTools that change text or formats into another form, with clear input and output pairs.
UNIX Timestamp Converter
Convert between local date-time values and UNIX timestamps.
Case Converter
Convert text between uppercase, lowercase, camelCase, snake_case, kebab-case, and more.
Hiragana / Katakana
Convert Japanese text between hiragana and katakana.
Base64 Encoder
Encode text to Base64 and decode Base64 back to text.
YAML / JSON Converter
Convert YAML to JSON and JSON back to YAML.
Inspect
4 toolsTools for reading content, structure, and metadata, such as JWTs, certificates, and text stats.
JWT Decoder
Paste a JWT and inspect the header, payload, and signature.
Character & Word Counter
Check characters, words, lines, and UTF-8 bytes in one place.
Subnet Mask Calculator
Convert CIDR prefixes and subnet masks, then inspect network details.
SSL Certificate Viewer
Inspect PEM certificates, validity, subject, issuer, SAN, and fingerprints.
Guides
Read the small things that save time later.
JWT and NextAuth secrets are easier to handle once the basics and length rules are clear. The full list lives on the guides page.
How to generate a NextAuth Secret
A practical workflow for generating and using the secret required by NextAuth setups.
How long should a JWT Secret be?
A practical baseline for JWT Secret length, plus the parts that matter more than character count.
What is a JWT Secret?
A short guide to the secret used for JWT signing and verification, and where it should live.
FAQ
Is devloom a password generator?
Not primarily. devloom is a developer-focused browser tool suite built for JWT secrets, API keys, placeholder images, character and word counting, and other workflow-ready values.
Does devloom upload generated values to a server?
No. Generation happens entirely in the browser, so values are not uploaded.
Are secrets stored anywhere?
No. devloom does not store generated values.
What can I use devloom for?
It is useful for JWT secrets, API keys, URL-safe tokens, UUIDs, UNIX timestamps, subnet masks, text conversion, Base64 work, SSL certificate inspection, YAML / JSON conversion, placeholder images for mockups or layout checks, and text measurement for copy limits.
Why it's safe
The safety story reads like a spec, not a slogan.
Browser-only
Generation stays on your device, so the values never need to leave the page.
No upload
Nothing is sent to a server while you generate or copy secrets.
No storage
Reloading clears the result list, which keeps the workflow ephemeral.
See the Privacy Policy for the detailed handling rules.