Utility Suite
157 free tools designed for engineering leaders, product founders, and developers. Zero friction, instant results.
Find the right tool for the task, even when you do not know its name.
Document critical architecture decisions effortlessly with structured records.
Calculate revenue lost from slow load times. See the business value of every 100ms improvement based on Deloitte benchmarks.
Measure global API response times. Visualize TTFB, DNS, and download speeds.
Get tailored tech stack recommendations for your next project based on scale, team size, and goals.
Choose the right state manager (Redux, Zustand, Context) based on your app complexity.
Paste a job description and get a clarity score, seniority alignment, and red-flag analysis instantly.
Scale your team, optimize performance, and maintain high standards.
Calculate error budgets and reliability targets. Know exactly when to freeze releases vs ship features.
Document critical architecture decisions effortlessly with structured records.
Evaluate your repository's Developer Experience and spot friction points for new hires.
Detect heavy dependencies, deprecated packages, and bloat in your package.json.
Generate a production-grade CI pipeline checklist and GitHub Actions workflow in seconds.
Calculate revenue lost from slow load times. See the business value of every 100ms improvement based on Deloitte benchmarks.
Measure global API response times. Visualize TTFB, DNS, and download speeds.
Get tailored tech stack recommendations for your next project based on scale, team size, and goals.
Choose the right state manager (Redux, Zustand, Context) based on your app complexity.
Assess the maturity of your design system. Check coverage of tokens, components, and docs.
Calculate revenue loss from unfilled roles. Supports USD, EUR, GBP, INR, and more.
Visualize your hiring pipeline, spot bottlenecks, and compare against industry benchmarks.
Estimate web development costs, timeline, and payback period. Supports 50+ currencies with tech stack recommendations.
Score your team on the four DORA metrics — deployment frequency, lead time, change failure rate, MTTR — and benchmark to Elite/High/Medium/Low.
Draft measurable objectives, key results, owners, and quarterly progress scorecards.
Validate ideas, improve UX, and build products people love.
Audit your landing page against high-impact CRO heuristics to find the leaks.
Compare RSU and ESOP offers. Evaluate vesting schedules, company valuations, and risk-adjusted compensation.
Design structured interview loops with scorecard generation. Get round suggestions and candidate experience scoring.
Paste a job description and get a clarity score, seniority alignment, and red-flag analysis instantly.
Evaluate your product's usability against Nielsen's 10 Heuristics.
Check your site against WCAG 2.1 standards for contrast, navigation, and semantics.
Score product ideas by reach, impact, confidence, and effort to prioritize a roadmap.
Rank initiatives by impact, confidence, and ease with a transparent ICE score.
Turn product requirements into clear user stories with acceptance criteria.
Create a structured product requirements document for teams and stakeholders.
Calculate Net Promoter Score from promoter, passive, and detractor responses.
Boost your productivity, optimize your career, and ship faster.
Calculate your ideal hourly rate with GST, expenses, and savings. Built for Indian freelancers.
Convert salaries across currencies with PPP adjustments. Compare purchasing power globally.
Compare freelance income with full-time salary including all benefits, PF, and insurance.
Beat Applicant Tracking Systems. Analyze resume vs job description and get keyword optimization tips.
Generate compelling LinkedIn headlines that get noticed by recruiters. 10+ proven formulas.
Create error-free Boolean search strings for LinkedIn and Google X-Ray.
Visualize breakpoints and test fluid grid/flex layouts in real-time.
Fine-tune Framer Motion spring physics with real-time preview.
Generate custom QR codes for job posts and career sites instantly.
Daily-driver utilities for parsing, decoding, and converting. Pure client-side, no token leaves your browser.
Test JavaScript regular expressions with live match highlighting, capture groups, and a plain-English breakdown of every token.
Build and decode cron schedules visually. Get the next 5 run times, a human-readable description, and copy-ready syntax.
Beautify, minify, sort keys, and validate JSON instantly. Side-by-side diff mode for comparing two payloads.
Decode JSON Web Tokens client-side. Inspect header, payload, expiry, and algorithm without sending the token to any server.
Paste raw CSS to get Tailwind utility classes, or paste Tailwind classes to get equivalent CSS. Supports the 60+ most common properties.
Build your custom workout split, edit every exercise, pick colours per day, then download a beautiful shareable card as PNG, PDF or JSON. Free, no signup.
Generate v4 (random) and v5 (name-based) UUIDs instantly. Bulk-generate dozens at once with optional uppercase formatting.
Encode or decode Base64 instantly with auto-detection, live preview, and full Unicode (emoji) support. 100% client-side.
Encode and decode URL components with encodeURIComponent vs encodeURI modes, plus query-string formatting for form payloads.
Convert text to and from HTML entities — named or numeric — so tags render as plain text and content stays safe to embed.
Convert Unix timestamps to human-readable dates and back. Live clock, millisecond support, and one-click presets for common formats.
Convert a time between any two timezones, compare multiple cities side-by-side, and see UTC offsets — perfect for remote teams.
Score passwords in real time with entropy, character-class analysis, common-password detection, and actionable improvement tips.
Generate MD5, SHA-1, SHA-256 and SHA-512 hashes in your browser via Web Crypto. Optional HMAC with a custom secret key.
Format messy SQL into readable, indented queries with configurable keywords per line. Supports SELECT, INSERT, UPDATE, DELETE and more.
Compare two texts side-by-side with word and line-level diffing, change statistics, and a unified view. Nothing leaves your browser.
Convert Markdown to clean HTML with live preview, syntax highlighting for code fences, and copy-ready output.
Count words, characters, sentences, paragraphs, and reading time in real time. Keyword density checker for SEO content.
Convert text to camelCase, PascalCase, snake_case, kebab-case, SCREAMING_SNAKE, title case, and more — with instant live conversion.
Turn any title or phrase into a clean, SEO-friendly URL slug — lowercase, hyphenated, and safe for routing. Options for underscores and length limits.
Generate placeholder text by paragraphs, sentences, or words. Choose classic or developer-flavored variants and copy instantly.
Convert JSON arrays to CSV with automatic header detection, delimiter options, and a live table preview. Fully client-side.
Parse CSV into clean JSON with delimiter and header handling, plus a data preview table and copy-ready output.
Generate TypeScript interfaces from any JSON — with optional arrays detection, null handling, and PascalCase naming. Like quicktype, in your browser.
Generate secure random passwords with configurable length, character sets, and an entropy readout. Copy or generate a whole batch.
Convert between decimal, binary, hex, and octal with live bit-width display and byte breakdowns. Perfect for bit manipulation work.
Convert images to Base64 data URIs with drag-and-drop, size stats, and a live preview — perfect for inline assets and CSS backgrounds.
Score any text with Flesch Reading Ease, Flesch-Kincaid grade level, and reading time. Optimize content for both users and SEO.
Sort, reverse, dedupe, trim, shuffle, prefix, or build SQL IN lists from any block of text lines.
Paste CSV and copy a clean GitHub-flavored Markdown table — or convert tables back to CSV, fast.
Validate, pretty-print, or minify any XML document — feeds, configs, and API payloads.
Convert between YAML and JSON in both directions, with syntax highlighting on errors and instant output.
Generate seeded, reproducible dummy records (names, emails, salaries, UUIDs) as CSV, JSON, or SQL.
Compress images and convert them to WebP or AVIF locally in your browser without uploading files.
Query nested JSON with JSONPath expressions and inspect matching values instantly.
Parse, edit, encode, and build URL query strings with a live preview.
Create unsigned JWT test tokens locally with claims, expiry presets, and warnings.
Clean and minify SVG markup locally while preserving useful vector output.
Validate JSON data against a JSON Schema and see precise path-level errors.
Compare semantic versions and test npm-style version ranges instantly.
Minify HTML while preserving safe text and producing compact markup.
Convert SVG markup into React-friendly JSX with safe attribute names.
Generate a GitHub-ready Markdown table of contents from headings.
Create a structured project README with setup, usage, and contribution sections.
Turn release notes into a clean Keep a Changelog-compatible document.
Review technical writing for clearer sentences, safer wording, passive voice, vague terms, and readability.
Visual generators for palettes, shadows, radii, gradients, and easing — copy production-ready CSS in one click.
Generate a complete Tailwind CSS shade scale (50–950) from any base color. Live preview, copy the config, or export as CSS variables.
Build linear and radial gradients with unlimited color stops, adjustable angles, and a live preview. Copy production-ready CSS instantly.
Create layered box shadows visually — offset, blur, spread, color, inset — with curated presets and copy-ready CSS output.
Drag each corner to craft pill, blob, and rounded shapes. Generates clean CSS with per-corner values and a live element preview.
Configure flex container and item properties visually with a live playground, then copy the exact CSS for your layout.
Design cubic-bezier() easing curves visually with a draggable handle, preview the motion on a live element, and copy the CSS or JS value.
Convert between HEX, RGB, and HSL color formats instantly with a live preview, opacity support, and CSS-ready output.
Grade any two colors against WCAG 2.1 AA and AAA thresholds — a must-check before every design handoff.
Build fluid CSS clamp values for responsive typography, spacing, and layout.
Design responsive CSS Grid layouts visually and copy production-ready CSS.
Compare CSS selectors and see which rule wins the cascade.
Reduce CSS whitespace and comments to create a compact stylesheet.
Generate a responsive type scale with CSS variables and preview sizes.
Resize and crop images locally to exact dimensions without uploading files.
Convert PNG, JPEG, WebP, and other browser-supported image formats locally.
Extract a usable color palette from any image in your browser.
Calculate missing image and video dimensions for any aspect ratio.
Turn design tokens into organized CSS custom properties and a ready-to-copy :root block.
Opinionated calculators for unit economics, runway, fees, and growth — built for operators.
Compute LTV, CAC payback, and the LTV-to-CAC ratio. Get a verdict on whether your unit economics are healthy enough to scale.
Cash, monthly burn, and a phased hiring plan → exact months of runway with a scenario slider. Built for founders watching the bank.
Project recurring revenue 12 months out using signup growth, churn, and ARPU. See your gross vs net new MRR curve.
Calculate net payout after payment-processor fees. Compare Stripe (US/EU), Razorpay (India), and PayPal in one place.
Compute required sample size per arm given baseline conversion, MDE, power, and significance. Avoid underpowered tests.
Model post-money SAFE investments — valuation cap, discount rate, and pro-rata — to see founder dilution and investor ownership.
Model a startup cap table: founder shares, option pool, and priced rounds with dilution waterfall across multiple financing events.
Estimate pre-money valuation using revenue multiples, EBITDA, and team/market heuristics — with a benchmark range against real deal data.
Input monthly retention by cohort to visualize the retention curve, compute lifetime value, and benchmark against SaaS peers.
Split revenue or profit among partners, contributors, or cost centers by percentage, ratio, or fixed amounts — with a visual breakdown.
Estimate monthly API spend across GPT, Claude, Gemini, DeepSeek, Mistral, Llama, and other major model families from input/output token volumes.
Calculate gross profit and margin from revenue and cost of goods sold.
Find the revenue and unit volume needed to cover fixed and variable costs.
Measure startup burn efficiency from net burn and net new recurring revenue.
Offers, notice periods, negotiations, and interview prep — built for engineers navigating the job market.
Calculate your last working day from notice start, days of leave, and monthly/weekly notices. Includes pro-rated bonus and salary projection.
Compare two job offers side-by-side — base, bonus, equity, benefits, commute, and growth — weighted to your priorities with a verdict.
Generate a tailored negotiation script from your offer details — counter-offer numbers, talking points, and email templates that land.
Turn your raw experience into structured Situation, Task, Action, Result answers for behavioral interviews — with metrics guidance.
Work through a step-by-step system design framework — requirements, capacity estimation, API, data model, and scaling — with expert tips.
Generate a tailored, professional cover letter from your details — role, company, skills, and highlights — with copy-ready output.
Write a professional resignation letter in seconds — notice period, last working day, and tone options — with a copy-ready template.
Calculate your take-home salary from CTC with PF, gratuity, and new vs old tax regime comparison. Built for Indian professionals.
Work out your new salary from a hike percentage — or the hike percentage from old and new salaries — including monthly breakdowns.
Compare cost of living between two cities across rent, groceries, transport, and more — with a salary-adjusted verdict.
Build a winning project proposal — scope, timeline, pricing tiers, and deliverables — from your inputs. Copy-ready for clients.
Config generators and references for the container and API era — copy-paste production files in seconds.
Generate .gitignore files from 30+ templates — Node, Python, Go, Rust, Java, macOS, Windows, IDEs, and more. Copy or download instantly.
Generate production-ready Dockerfiles and .dockerignore for Node, Python, Go, Rust, Java, and Next.js — multi-stage, distroless-aware.
Searchable reference for every HTTP status code — 1xx to 5xx — with meanings, typical use cases, and developer-friendly explanations.
Generate SEO-ready title, description, Open Graph, and Twitter Card tags from your inputs — with Google preview and copy-ready HTML.
Generate a clean robots.txt with allow/disallow rules, crawl-delay, sitemap references, and multi-user-agent support. Copy or download.
Generate structured-data JSON-LD for Articles, FAQs, Products, and Organizations — with a validator and copy-ready script tags.
Paste your URLs and generate a valid XML sitemap with priority, changefreq, and lastmod — plus a robots.txt pointer.
Generate redirect rules for nginx, Apache .htaccess, Vercel, and Netlify — 301 and 302 — from a simple from/to list.
Generate docker-compose.yml for common stacks — web app, Postgres, Redis, nginx — with volumes, networks, and healthchecks.
Generate production-ready nginx server blocks — proxy, static, gzip, TLS, and security headers — for your app in seconds.
Build cURL commands, run API requests in your browser, format JSON responses, and compare changes locally.
Convert any IPv4 CIDR to a network range, broadcast, mask, and usable-host count in one click.
Validate essential OpenAPI 3 structure and format API contracts in your browser.
Format GraphQL operations and catch common syntax errors in your browser.
Convert Postman JSON to cURL or reverse-engineer cURL back to Postman JSON. Run and inspect responses in your browser.
Build a Content-Security-Policy header from common resource directives.
Generate PKCE code verifiers, challenges, and authorization snippets locally.
Generate a deployment and service manifest for a containerized application.
Build a readable GitHub Actions strategy matrix from runtime combinations.
Generate Subresource Integrity hashes and ready-to-paste integrity attributes.
Compare structured API responses and spot added, removed, or changed fields.
Generate realistic mock API responses from an OpenAPI schema locally.
Build readable GraphQL queries from fields, variables, and operation settings.
Find the correct content type from a file extension or MIME type.
Parse browser, operating system, and device details from a user-agent string.
Document environment variables and generate a safe .env.example template.
Build a browser Permissions-Policy security header from selected features.
EMI, SIP, and income-tax calculators for your own money — built for salaried engineers in India.
Compute monthly EMI, total interest, and a full amortization schedule for any loan — home, car, or personal.
Project mutual-fund SIP growth or find the monthly amount needed to hit a target corpus.
Compare the new vs old income-tax regime for FY 2025-26 with §87A rebate, marginal relief, and 4% cess.
Add or remove Indian GST and compare inclusive and exclusive invoice totals.
Project compound investment growth and inflation-adjusted financial independence scenarios.
Count working days between dates with optional weekends and holiday exclusions.