Guides
Practical, no-fluff guides for developers and writers. Each one walks through a real task and points you at the free browser-based tools that get it done, with nothing uploaded anywhere.
What is a cron job and how do you read one
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Cron jobs explained.
Best free Wi-Fi QR code generator
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Wi-Fi QR codes.
Why does my URL show %2520
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Fix double encoding.
Best free word counter for students
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Essay word counts.
Best free online UUID generator
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. UUID generator.
JPG vs PNG: what is the difference
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. JPG vs PNG.
Best free online regex tester
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Regex tester.
Best free diff checker for code review
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Code review diffs.
Why is my JWT invalid
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Fix invalid JWTs.
Why is my SHA-256 hash different
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Fix hash mismatches.
SHA-1 vs SHA-256: what is the difference
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. SHA-1 vs SHA-256.
Best free online binary to decimal converter
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Binary to decimal.
Best free lorem ipsum generator for designers
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Placeholder text.
Best free online URL encoder and decoder
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. URL encode/decode.
UUID vs GUID: what is the difference
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. UUID vs GUID.
Why is my Base64 decode showing garbled text
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Fix garbled Base64.
Best free case converter for developers
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Dev case styles.
Best free online hex to decimal converter
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Hex to decimal.
Why is my regex not matching
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Fix regex matching.
Best free color palette generator for web design
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Palette picks.
HTML entities vs URL encoding: the difference
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. HTML vs URL encode.
Why is my Unix timestamp showing 1970
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Fix the 1970 bug.
Best free online SHA-256 hash generator
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. SHA-256 picks.
Best free slug generator for SEO-friendly URLs
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Slug tool picks.
Encoding vs encryption vs hashing: the difference
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. The three explained.
Best free image compressor for email attachments
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Compress for email.
How to fix Unexpected token errors in JSON
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Fix JSON fast.
Why is my QR code not scanning
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. 9 QR fixes.
Base64 vs Base64URL: what is the difference
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Base64 guide.
Free alternative to base64decode.org
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Vs base64decode.org.
Free alternative to UUIDGenerator.net
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Vs UUIDGenerator.net.
Free alternative to Diffchecker
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Free vs Diffchecker.
Free alternative to WordCounter.net
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Free vs WordCounter.
Free alternative to regex101
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Free vs regex101.
Free alternative to epochconverter.com
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Free vs epochconverter
Best free password generator that works offline
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Offline, no account.
Best free QR code generator that doesn't expire
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Static QR, no expiry.
Free alternative to jwt.io
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Free vs jwt.io.
Free alternative to TinyPNG
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Free vs TinyPNG.
Free alternative to JSONLint
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Free vs JSONLint.
Best free online JSON formatter that works offline
Tools Nimbus is a free, no-signup developer toolkit that runs entirely in your browser, so your data is never uploaded to a server. Works offline.
JSON Formatting vs Minifying: When to Use Each
Learn when to pretty-print JSON for debugging and when to minify it for production, plus how validation and indentation actually work.