Tools
207 of them, free to use, with no account, no upload queue and no watermark. Most run entirely inside your browser — which means the thing you are checking never reaches our servers at all.
207 tools available
Check what your connection reveals about you before someone else does.
Check whether your network can reach encrypted DNS providers, and how fast they answer.
Runs in your browser
Inspect camera settings, timestamps, and GPS coordinates — and strip them cleanly.
Runs in your browser
Look up geographical location, ISP, ASN and network routes for any IP.
Scan logs, code, and text for credit cards, SSNs, API tokens, and private keys.
Runs in your browser
Generate compliant, lawyer-crafted privacy policies for websites, apps, and SaaS platforms.
Runs in your browser
Identify datacenter hosting routes, public proxies, and VPN tunnels.
Unwrap Outlook SafeLinks, Proofpoint, Facebook link shims and clean tracking parameters.
Runs in your browser
Detect public and local IP leaks from WebRTC ICE candidates bypassing your VPN.
Runs in your browser
Everything this page can learn about your device without asking.
Runs in your browser
See the IP address, and the headers, your browser hands to every site you visit.
Generate, measure and hash — all of it without your input leaving the page.
Simulate Google Authenticator 6-digit 2FA codes from a Base32 secret with live countdown.
Runs in your browser
Generate real bcrypt hashes, and check a password against an existing one.
Runs in your browser
Probe IP reputation against Spamhaus, Barracuda, SpamCop, and SURBL.
Verify credentials against public breaches using zero-knowledge k-Anonymity.
Runs in your browser
Decode SPF, DKIM, DMARC authentication records and trace mail server hops.
Runs in your browser
Hash a downloaded file and compare it to the published value.
Runs in your browser
SHA-1, SHA-256, SHA-384 and SHA-512 digests, computed in your browser.
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Build a strong random password without it ever leaving your browser.
Runs in your browser
Estimate how long a password survives a dictionary-and-rules attack.
Runs in your browser
Generate 2048-bit and 4096-bit RSA public and private keypairs in standard PEM format.
Runs in your browser
Audit HSTS, CSP, X-Frame-Options, and Referrer-Policy with an A+ to F grade.
Verify certificate validity, expiry countdown, issuer, and cipher strength.
Count it, re-case it, clean it up, compare it.
Convert plain text into ASCII art banners, FIGlet fonts, and Unicode typography.
Runs in your browser
Switch text between sentence, title, camel, snake, kebab and CONSTANT case.
Runs in your browser
Trim spaces, remove duplicates, standardize dates, and format messy spreadsheet tables client-side.
Runs in your browser
Analyze single-word, 2-word, and 3-word phrase frequency and percentage density.
Runs in your browser
Remove unwanted line breaks from PDF copies, emails, and terminal logs.
Runs in your browser
Placeholder text by the paragraph, with the length you actually want.
Runs in your browser
Visual spreadsheet editor to build, format, and align GitHub Flavored Markdown tables.
Runs in your browser
Calculate Flesch Reading Ease, Flesch-Kincaid Grade Level, and Gunning Fog index.
Runs in your browser
Clean up a list: drop duplicates and blanks, trim whitespace, sort or reverse.
Runs in your browser
Generate customized terms and conditions agreements with user rules, billing terms, and liability limits.
Runs in your browser
Strip HTML, smart quotes, zero-width spaces, and hidden control characters.
Runs in your browser
Compare two blocks of text and see exactly which lines changed.
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Capitalize headlines and titles according to Chicago, AP, APA, and MLA style guides.
Runs in your browser
Benchmark your typing speed in words per minute (WPM) and accuracy percentage.
Runs in your browser
Words, characters, sentences, paragraphs and reading time as you type.
Runs in your browser
Encoding, decoding and inspection for the things you deal with daily.
Combine curated .gitignore rules for Node, Python, Rust, Go, macOS, and IDEs.
Runs in your browser
Generate rewrite rules, HTTPS redirects, caching headers, and security rules for Apache.
Runs in your browser
Encode text to Base64 or decode it back, Unicode included.
Runs in your browser
Format standard CHANGELOG.md files following the Keep A Changelog and SemVer standards.
Runs in your browser
Build standardized Conventional Commits 1.0.0 messages with scopes, breaking changes, and CLI commands.
Runs in your browser
Build, decode, and preview 5-field cron schedules in human English.
Runs in your browser
Calculate mathematical clamp() expressions and responsive modular scales without media queries.
Runs in your browser
Convert between CSV and JSON, both directions.
Runs in your browser
Convert cURL commands into JavaScript fetch, Python requests, Node axios, Go, PHP and Rust.
Runs in your browser
Query A, AAAA, MX, TXT, NS, CNAME, and SOA records for any domain.
Compose multi-container application stacks with databases, cache, web servers, and networks.
Runs in your browser
Convert docker run CLI commands into clean, production-ready docker-compose.yml files.
Runs in your browser
Generate Excel and Google Sheets formulas from plain English descriptions and explain complex nested syntax.
Runs in your browser
Interactive guide to solve Git emergencies, undo commits, fix branches, and recover lost code.
Runs in your browser
Visual builder for GitHub Actions CI/CD workflows, runners, matrices, and caches.
Runs in your browser
Design custom Shields.io status badges for GitHub stars, licenses, releases, and npm versions.
Runs in your browser
Real-time GFM editor and previewer with word counts, reading times, and task checklists.
Runs in your browser
Download any single subfolder or directory from a GitHub repository as a ZIP without cloning.
Runs in your browser
Create standardized YAML issue forms and Pull Request templates for repositories.
Runs in your browser
Design modular repository or profile README files with badges, tech stack pills, and live preview.
Runs in your browser
Convert GraphQL SDL types, queries, inputs, and enums into TypeScript definitions.
Runs in your browser
Escape HTML so it displays as text, or decode entities back.
Runs in your browser
Inline an image into CSS, HTML or an email.
Runs in your browser
Inspect KeyboardEvent key, code, which, keyCode, and modifier states in real time.
Runs in your browser
Pretty-print, minify and validate JSON, with the real parser error.
Runs in your browser
Convert JSON into idiomatic Go structs with json tags and smart acronym casing.
Runs in your browser
Convert JSON into idiomatic Rust structs with Serde annotations and derive macros.
Runs in your browser
Infer database table schemas and generate batch INSERT statements from JSON objects.
Runs in your browser
Convert JSON documents or API responses into type-safe TypeScript interfaces or types.
Runs in your browser
Inspect a JSON Web Token’s header, payload and expiry.
Runs in your browser
Calculate octal and symbolic Linux file permissions with an interactive matrix.
Runs in your browser
Convert Markdown to clean semantic HTML with split-screen real-time preview.
Runs in your browser
Generate fake datasets for users, e-commerce, companies, and transactions in JSON, SQL, or CSV.
Runs in your browser
Configure high-performance reverse proxies, static sites, PHP-FPM, SSL, and HTTP/2.
Runs in your browser
Convert between binary, octal, decimal and hexadecimal.
Runs in your browser
Generate social meta tags with real-time Google SERP, Twitter, and Facebook previews.
Runs in your browser
Test TCP connectivity and firewall rules across standard application ports.
Generate MIT, Apache 2.0, GPL, and BSD open-source license files for your GitHub repositories.
Runs in your browser
Create compliant W3C web app manifests with icons, theme colors, and display settings.
Runs in your browser
Test a regular expression against sample text and see every match.
Runs in your browser
Test websites across simulated iPhone, Android, iPad, and desktop viewports simultaneously.
Runs in your browser
Resolve any IPv4 or IPv6 address back to its verified PTR hostname.
Create search crawler instructions and test path disallow rules in real time.
Runs in your browser
Generate valid Schema.org JSON-LD structured data for Google Rich Results.
Runs in your browser
Connect to live EventSource streams or simulate LLM streaming tokens with event-by-event inspection.
Runs in your browser
Format, indent, and uppercase keywords in SQL queries for maximum readability.
Runs in your browser
Compress complex SQL queries into a single line by removing comments and superfluous whitespace.
Runs in your browser
Convert CREATE TABLE DDL statements into TypeScript interfaces, Prisma schemas, TypeORM, or Drizzle models.
Runs in your browser
Transform raw SVG markup into production-ready React JSX and TypeScript components.
Runs in your browser
Convert Cargo and pyproject TOML files into JSON or YAML, and back.
Runs in your browser
Generate and inspect 128-bit lexicographically sortable identifiers with timestamp decoding.
Runs in your browser
Percent-encode a URL component, or decode one back to readable text.
Runs in your browser
Trace 301, 302, and 307 redirect chains and inspect HTTP status codes.
Turn a title into a clean, lowercase, hyphenated URL slug.
Runs in your browser
Construct Google Analytics and Meta tracking URLs with custom campaign tags.
Runs in your browser
Generate version 4 UUIDs in bulk, from your browser’s crypto source.
Runs in your browser
Test HMAC signatures, inspect JSON payloads, and send test events to your endpoint.
Runs in your browser
Connect to WebSocket endpoints, inspect frames, and test bidirectional communication.
Runs in your browser
Inspect domain registration, registrar, creation, and expiration dates.
Check XML sitemap health, count indexed URLs, and detect broken links.
Convert XML documents to JSON objects and JSON to formatted XML with attribute support.
Runs in your browser
Convert configuration data bidirectionally between YAML and JSON syntax.
Runs in your browser
Timestamps, spans and ages, worked out properly on the calendar.
Find an exact age in years, months and days — and the next birthday.
Runs in your browser
Count working weekdays between dates with weekend and holiday exclusions.
Runs in your browser
How long until a deadline, flight or birthday.
Runs in your browser
Work out how long there is between two dates, in every useful unit.
Runs in your browser
Track 25-minute deep work intervals and structured breaks with sound alerts.
Runs in your browser
Millisecond-accurate online stopwatch with lap recording and split times.
Runs in your browser
See one moment across as many zones as you need.
Runs in your browser
Convert a Unix timestamp to a readable date, and see the current one.
Runs in your browser
Everyday sums that are quicker here than in your head or a spreadsheet.
Reduce dimensions to a ratio, and resize while keeping it.
Runs in your browser
Body mass index from height and weight, with the usual caveats stated.
Runs in your browser
See what savings grow to, with regular deposits included.
Runs in your browser
See the real price after a discount — including two stacked ones.
Runs in your browser
Calculate daily, monthly, and yearly power consumption and utility costs per appliance.
Runs in your browser
Convert Excel column letters like AA or XFD to numbers and numbers to column letters with batch support.
Runs in your browser
Cost a journey from your distance, mileage and fuel price.
Runs in your browser
Create clean, professional PDF invoices with itemized rates, taxes, and discounts.
Runs in your browser
Monthly repayment, total interest and total repaid for any loan.
Runs in your browser
Spell out a number, for cheques and contracts.
Runs in your browser
The three percentage questions people actually ask, answered at once.
Runs in your browser
Validate international telephone numbers and format to standard E.164.
Runs in your browser
Draw a name, a number, or roll dice — fairly.
Runs in your browser
Convert both ways, and reject numerals that are not valid.
Runs in your browser
Add tax to a price, or work out the tax already inside one.
Runs in your browser
Work out the tip and split the bill, including rounding up.
Runs in your browser
Length, weight, temperature, volume, data and speed in one place.
Runs in your browser
Convert colour formats and check contrast against the accessibility thresholds.
Transform code snippets into beautiful, shareable graphics with custom themes and gradients.
Runs in your browser
Generate complementary, triadic, and monochromatic color palettes from any hex.
Runs in your browser
Check a text and background pair against every WCAG threshold.
Runs in your browser
Convert a colour between HEX, RGB and HSL, with a live preview.
Runs in your browser
Customizable pure-CSS spinners, wave bars, bouncing dots, and radar pulses.
Runs in your browser
Create multi-layer, realistic soft box shadows with copyable CSS declarations.
Runs in your browser
Design custom CSS polygon cutouts and geometric shapes on an interactive anchor canvas.
Runs in your browser
Interactive frosted glass generator with blur, opacity, border shine, and shadow controls.
Runs in your browser
Design linear, radial, and conic CSS gradients with multi-stop color controls.
Runs in your browser
Design smooth CSS keyframe animations with real-time preview and production-ready code.
Runs in your browser
Create multi-layer radial mesh gradients with draggable color pins and instant CSS export.
Runs in your browser
Soft UI generator for concave, convex, flat, and pressed card surfaces with dual shadows.
Runs in your browser
Design responsive, table-based HTML email signatures with avatars, badges, and social icons.
Runs in your browser
Extract harmonious color palettes from photos with WCAG accessibility contrast scores.
Runs in your browser
Generate complete asset catalogs and PNG bundles for App Store, Google Play, and PWA favicons.
Runs in your browser
Preview Google search snippets, Facebook cards, and Twitter / X previews.
Generate pixel-perfect mockups for X (Twitter), Instagram, and LinkedIn posts.
Runs in your browser
Visualize, transform, scale, center, and edit SVG path d commands with an interactive canvas.
Runs in your browser
Create seamless geometric SVG patterns with live tiling and instant CSS background code.
Runs in your browser
Find the closest matching Tailwind CSS palette color and utility class from any hex.
Runs in your browser
Preview modern heading and body Google Font pairings with live layout hierarchy.
Runs in your browser
Compress, convert, merge and split — locally. Your files are never uploaded to us.
Turn photos into one compact PDF, compressing them on the way in.
Runs in your browser
Draw or type your signature on a smooth canvas and download transparent PNG or SVG.
Runs in your browser
Extract embedded high-resolution JPEG photos and diagrams from PDF documents.
Runs in your browser
Generate all browser favicon sizes, Apple touch icons, Android PWA icons, and .ico file.
Runs in your browser
Erase uniform backgrounds and extract transparent PNG cutouts in-browser.
Runs in your browser
Shrink a photo to a target file size without uploading it anywhere.
Runs in your browser
Resize an image and convert between JPG, PNG and WebP, locally.
Runs in your browser
Combine JPG and PNG images into a single PDF, entirely in your browser.
Runs in your browser
Join several PDFs into one, in the order you choose.
Runs in your browser
Make a PDF smaller by recompressing the images inside it.
Runs in your browser
Create custom QR codes for URLs, Wi-Fi, vCards, and decode QR images locally.
Runs in your browser
Turn sideways or upside-down pages the right way up, and save it.
Runs in your browser
Crop and scale images to exact dimensions for YouTube, X, Instagram, and LinkedIn.
Runs in your browser
Pull out the pages you need, or break a PDF into one file per page.
Runs in your browser
Strip editor metadata, namespaces, and redundant tags to shrink SVG file size.
Runs in your browser
Addressing and subnet maths without the mental arithmetic.
Analyze HAR network logs, request waterfalls, payload sizes, and HTTP status codes.
Runs in your browser
Identify device manufacturers and network interface card (NIC) vendors from MAC addresses.
Runs in your browser
Turn any IPv4 CIDR into its network, broadcast, mask and usable host range.
Runs in your browser
Loan schedules, tax regimes, investment projections, and business calculators — all computed in your browser.
Simulate compound interest growth with regular deposits, multiple frequencies, and inflation.
Runs in your browser
Calculate asset depreciation using Straight-Line, Double Declining, or Sum-of-Years.
Runs in your browser
Calculate break-even sales volume, revenue targets, and margin of safety.
Runs in your browser
Calculate monthly auto payments with trade-in allowance, sales tax, and dealer fees.
Runs in your browser
Calculate compound annual growth rate with yearly milestones and index benchmarks.
Runs in your browser
Calculate true cost per use, wear, or day for electronics, clothing, and gear.
Runs in your browser
Calculate your credit card payoff timeline and expose the minimum payment trap.
Runs in your browser
Calculate crypto trade net profits, exchange fees, and estimated capital gains tax.
Runs in your browser
Calculate crypto staking compounding rewards, token accumulation, and fiat gains.
Runs in your browser
Convert between world currencies at live mid-market rates, with the feed date shown.
Compare snowball and avalanche repayment methods to find interest savings.
Runs in your browser
Simulate compounding share accumulation and portfolio growth from reinvested dividends.
Runs in your browser
Calculate your recommended safety net fund and living expense runway.
Runs in your browser
Calculate monthly loan payments, total interest, and year-by-year amortization schedules.
Runs in your browser
Project EPF retirement corpus with employee, employer contributions, and wage increments.
Runs in your browser
Calculate your FIRE number, safe withdrawal rate, and Lean or Coast milestones.
Runs in your browser
Calculate bank FD maturity value with quarterly compounding and TDS threshold checks.
Runs in your browser
Calculate required hourly and daily rates factoring taxes, overheads, and billable hours.
Runs in your browser
Calculate retail gold jewelry billing with karat purity, making charges, and 3% GST.
Runs in your browser
Calculate GST exclusive and inclusive amounts with CGST, SGST, IGST and slab breakdowns.
Runs in your browser
Calculate statutory gratuity under the 1972 Act with ₹20 Lakh tax exemption rules.
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Convert between gross margin, markup percentage, product cost, and revenue.
Runs in your browser
Calculate tax-exempt HRA under Section 10(13A) for metro and non-metro cities.
Runs in your browser
Work out income tax anywhere: pick a country, or enter your own bands and currency.
Runs in your browser
Calculate the erosion of purchasing power and future equivalent living costs over time.
Runs in your browser
Generate loan repayment schedules and calculate interest saved with extra prepayments.
Runs in your browser
Project one-time mutual fund returns with compound growth and wealth multiplier.
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Plan your monthly income allocation with the 50/30/20 rule and spending allowances.
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Calculate monthly home loan payments with PITI, PMI, HOA fees, and amortization.
Runs in your browser
Compare new loan terms, monthly payment savings, and break-even closing costs.
Runs in your browser
Calculate NPS Tier 1 retirement corpus, 60% tax-free lump sum, and monthly pension.
Runs in your browser
Calculate exact invoice amounts to receive your target payout after processor fees.
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Calculate your total net worth by balancing liquid and fixed assets against liabilities.
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Estimate property registration charges and stamp duty with state slabs and gender concessions.
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Project 15 to 30 year PPF maturity corpus with statutory limits and EEE tax savings.
Runs in your browser
Calculate bank recurring deposit maturity amount with quarterly compounding.
Runs in your browser
Track recurring subscriptions and aggregate monthly and annual SaaS expenses.
Runs in your browser
Compare the true long-term financial cost of buying a home versus renting and investing.
Runs in your browser
Estimate your target retirement corpus, monthly SIP needed, and 4% FIRE milestone.
Runs in your browser
Calculate simple ROI, annualized CAGR, wealth multiplier, and inflation-adjusted real returns.
Runs in your browser
Calculate MRR, ARR, churn rate, CAC, customer LTV, and CAC payback period.
Runs in your browser
Convert annual salary to hourly, weekly, and monthly rates with overtime and PTO.
Runs in your browser
Project long-term mutual fund wealth accumulation from regular monthly SIPs and annual increments.
Runs in your browser
Calculate in-hand monthly pay after taxes, EPF, FICA, and deductions for India and the US.
Runs in your browser
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