All tools
40 utilities. Each one runs in your browser. No sign-ups, no popups, no paywalls.
Browse by category
Encoders, decoders, and validators
URL encoder / decoder
Percent-encode strings for URLs.
Base64 encoder / decoder
Standard or URL-safe base64.
HTML entity encoder / decoder
Named or numeric entities.
JSON formatter / validator
Format, validate, minify JSON.
JWT decoder + claims explainer
Decode JWTs and explain standard claims.
IP address validator (IPv4 + IPv6)
Validate addresses and compute CIDR subnets.
Kubernetes manifest validator
Quick structural pre-check for k8s YAML.
TOML formatter / validator
Validate and reformat TOML.
ROT13 / Caesar cipher
Adjustable shift cipher (toy, not security).
Generators and converters
UUID generator (v4 + v7)
Random or time-ordered, bulk supported.
Hash generator (MD5, SHA-256, SHA-512)
All five common hash algorithms in parallel.
Color picker / converter
Hex, RGB, HSL, live-synced.
JSON to TypeScript interface
Generate TS interfaces from a JSON sample.
CSV to Markdown table
Quoted fields, header toggle, auto-delimit.
Markdown to JIRA wiki format
Headings, code, links, lists.
Markdown to Confluence storage
Storage-format XML for the REST API.
SVG to favicon set
Five PNG sizes plus the HTML link snippet.
Terraform .tfvars formatter
Align equals, optional sort.
Curl command parser
Read a curl command as a structured request.
Image and color tools
Calculators
Cron expression to English
Five-field cron, ranges, lists, named days.
Time zone converter
Multi-target time conversion.
Wedding cake serving calculator
Tiers and sizes for any guest count.
Freelancer rate calculator
Salary target to hourly rate (estimate).
Gas cost for trip
Distance + MPG + price arithmetic.
Pizza per person
Adjusts for size, hunger, adult/kid mix.
Image dimensions calculator
Pixels and physical at any DPI.
Sleep cycle calculator
Suggested bedtimes for full 90-min cycles.
Project deadline calculator
Working days + US federal holidays.
AI-augmented
Regex to English explainer
Plain-English breakdown of any regex.
Code snippet explainer
Walkthrough for any language.
SQL query explainer
Clause-by-clause walkthrough.
Bash command explainer
Token-by-token shell breakdown.
Excel/Sheets formula explainer
Function-by-function explanation.
Improve my LLM prompt
Sharpen a vague prompt.
Email tone rewriter
Rewrite in formal, friendly, or firm tone.
Resume bullet sharpener
Rephrase only; never fabricates.
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