Practical utilities for your daily workflow. No signup, no tracking, no ads. Your data never leaves your browser.
Add your team's cities. Pick a meeting time. See every teammate's local time side-by-side — DST-aware, next-day-aware, and honest about who has to take the call at midnight. Team overlap heatmap included.
Build any HTTP request visually — method, URL, headers, query params, body, auth. Get equivalent curl, JavaScript fetch, and Python requests code side-by-side. Everything runs in your browser.
Paste messy JSON, get it beautifully formatted and validated instantly. Syntax highlighting, error detection, tree view, and path copying. The fastest JSON tool on the web.
Paste two JSON payloads, get a colour-coded deep diff — added, removed, and changed keys at every level of nesting. Perfect for API-response debugging, config comparison, and schema-change review.
Paste any JSON, get clean TypeScript interfaces or types — with nested objects, optional fields, union inference, and sensible naming. No signup, runs entirely in your browser.
Fill in incident details, get a full blameless incident report in Markdown — summary, timeline, root cause, contributing factors, action items. Copy or download .md.
Paste a package.json, instantly get a polished GitHub-flavored README — with badges, npm/yarn/pnpm/bun install commands, scripts table, and contributing sections. Live preview included.
Build cron expressions visually with plain English descriptions. See the next 5 run times instantly. Never get cron syntax wrong again.
Paste any SQL — SELECT, CTEs, subqueries, window functions — and get clean, indented, readable output instantly. Works with Postgres, MySQL, SQL Server, SQLite, BigQuery.
Generate the exact clamp() value for fluid type and responsive spacing. Live preview at every viewport width, copyable CSS, supports both rem and px.
Generate UUID v4 (random) or UUID v7 (sortable, timestamp-based) in bulk, and decode any UUID to extract version, variant, and embedded timestamp. Crypto-secure, browser-only.
120+ curated questions across five categories — daily standup, retrospective, team culture, technical check-in, and async warm-up. Copy in one click.
Write and test regular expressions with live matching, capture group highlighting, and plain English explanations of what your pattern does.
Enter any IPv4 CIDR block and get the network address, broadcast, usable host range, subnet mask, wildcard, and binary breakdown. Works offline in your browser.
Compare frameworks and libraries side by side — community size, performance, learning curve, and ecosystem. Make informed tech decisions.
Create beautiful, structured release notes in seconds. Paste your git log or add entries manually — get formatted output in Markdown, HTML, or Keep a Changelog format.
Bump versions correctly, compare two versions side by side, and validate version strings against the semver spec. Never get MAJOR.MINOR.PATCH wrong again.
Type what you want to do in plain English — "undo my last commit", "rename a branch", "delete remote branch" — and get the exact command, an explanation, and the caveats that'll save you.
Search every HTTP status code — from 100 to 599 plus Cloudflare and WebDAV extensions. For each: what it means, when to return it, common causes when you see it in logs, and a real-world example.
Convert RPS ↔ RPM ↔ RPH ↔ RPD, model token-bucket bursts, plan exponential-backoff retries, and size concurrency with Little's Law. Four calculators in one tool.
Generate a focused review checklist by language (TS, Python, Go, Rust, Java, C#, SQL) and PR type (feature, bugfix, refactor, security, performance, dependency). Copy as Markdown straight into your PR.
Paste any timestamp (seconds, milliseconds, microseconds, or ISO 8601) — get every other format back, in any IANA timezone. Live UTC clock, one-click copy, common offsets (+1 day, -7 days, ±1 year), and a 2038 overflow reminder.
Paste any JSON Web Token to instantly decode header and payload, see every claim, get a human-readable expiry status, and catch common security warnings (alg=none, missing exp, long-lived tokens).
Encode and decode URLs the right way. Toggle between encodeURIComponent, encodeURI, and form-style + encoding — and see a per-character diff of exactly what changed. Runs entirely in your browser.
Build a Conventional Commits 1.0-compliant message visually. Pick type, scope, breaking-change flag, body, and footers — with live validation, syntax-colored preview, and one-click copy. Eight real-world examples included.
Pick an algorithm or data structure and see its time/space complexity, when to use it, and a rough operation-count estimate for your input size. Includes full reference tables for common sorts and data-structure operations.
Answer 10 questions about your team, scale, deploy cadence, ops maturity, and data shape. Get an opinionated recommendation — monolith, modular monolith, or microservices — with reasoning, trade-offs, and a one-paragraph defense you can take to your team.
Score each piece of tech debt on impact and effort. Get an interactive 2×2 quadrant matrix (Quick Wins, Big Bets, Fill-ins, Avoid) and an ROI-ranked backlog you can take to quarterly planning. Saves to your browser; exports to Markdown, JSON, or CSV.
We're a team of engineers who got tired of ad-heavy, signup-required tools that track everything you paste. These tools run entirely in your browser — your JSON, regex, and code never touch a server.
Your data stays in your browser. No server calls, no logging, no analytics on what you paste. We literally can't see your input.
No signup walls, no premium upsells, no "you've reached your limit" banners. Every feature is free, every time.
Instant results, no loading spinners, no waiting for server responses. Everything runs client-side for zero-latency feedback.
We also build free career tools for the modern workplace — or browse open jobs at companies with great engineering culture.