Tools that do one thing well.

JSON, regex, hashes, JWT, diffs, encoders, IP lookup, OpenGraph preview, and other tools devs reach for daily.

• JSON Formatter Format, validate, and minify JSON in your browser. Tree view with copyable paths. Nothing is uploaded to a server.
• Base64 Encoder & Decoder Encode and decode Base64 text and files in your browser. Image preview included. No data leaves your device.
• URL Encoder & Decoder Encode and decode URLs and URL components in your browser. Supports component-level and full URL modes.
• JWT Decoder Decode JSON Web Tokens (JWT) and verify signatures in your browser using the Web Crypto API. Nothing is sent to a server.
• Hash Generator Generate MD5, SHA-1, SHA-256, and SHA-512 hashes for text or files in your browser using the Web Crypto API.
• UUID Generator Generate UUIDs in v1, v4, and v7 formats. Bulk generate and download as CSV. Runs entirely in your browser.
• Regex Tester Test regular expressions in your browser. View match groups, run replace operations, and reference the built-in cheat sheet.
• Cron Parser Parse cron expressions into plain English and preview the next 10 run times. Generate cron strings from a form.
• Unix Timestamp Converter Convert Unix timestamps (epoch) to human-readable dates and ISO 8601, in any timezone. Runs in your browser.
• SQL Formatter Format and beautify SQL queries in your browser. Supports MySQL and PostgreSQL dialects.
• Diff Checker Compare two blocks of text side-by-side or inline. Highlights additions, removals, and changes. Runs in your browser.
• CIDR & Subnet Calculator Calculate IPv4 subnet ranges, network/broadcast addresses, usable host counts, and CIDR notation. Runs in your browser.
• Markdown to HTML Convert Markdown to clean HTML in your browser with live preview. Copy as HTML or download.
• What is My IP? See your public IP address, ISP, ASN, and approximate location. Uses ipapi.co — disclosed and opt-in.
• Domain & IP Lookup Look up A, AAAA, MX, NS, TXT, CNAME records for a domain, or geolocation and ASN for an IP. Disclosed third-party APIs.
• OpenGraph Previewer Preview how a URL's OpenGraph and Twitter Card tags render on social media. Supports URL or pasted HTML.
• Text Case Converter Convert text between camelCase, PascalCase, snake_case, kebab-case, Title Case, and more. Devs use this daily.
• Lorem Ipsum Generator Generate placeholder text in multiple flavours — classic Latin, cupcake, hipster, corporate, Canadian, pirate.
• UTM Link Builder Build tracking URLs with utm_source, utm_medium, utm_campaign parameters. See exactly where your traffic comes from in analytics.
• Encryption Key Generator Generate cryptographically-strong app secrets, API keys, AES/HMAC keys, UUIDs, and OTP codes. Runs in your browser.

Apache configs, certificates, cron jobs, and sysadmin utilities.

• .htaccess Generator Generate Apache .htaccess snippets for redirects, HTTPS forcing, caching, compression, and hotlink protection.
• .htpasswd Generator Generate .htpasswd entries with bcrypt or MD5-APR1 in your browser. Used for HTTP Basic Authentication on Apache.
• Cron Job Builder Build cron job entries from a form. Get the cron expression and full crontab line ready to copy.
• SSL Certificate Decoder Paste a PEM-encoded SSL certificate to see issuer, validity dates, SANs, fingerprint, and more. Decoded in your browser.
• Robots.txt Tester Test URLs against a robots.txt file — does Googlebot see this page? Supports wildcards, $ anchors, and user-agent matching.

Income tax, GST/HST/PST, mortgages, and other Canada-specific financial calculators.

• Canadian Income Tax Calculator Calculate your 2026 federal and provincial income tax in Canada. Estimates CPP, EI, and after-tax income for every province and territory.
• GST / HST / PST Calculator Calculate Canadian sales taxes by province. Forward and reverse calculations for GST, HST, PST, and QST.
• Canadian Mortgage Calculator Calculate Canadian mortgage payments with CMHC insurance, stress test qualification, and accelerated bi-weekly options.
• Statutory Holidays & Business Days View Canadian statutory holidays by province and count business days between any two dates.
• Hourly ↔ Salary Converter Convert between hourly wage and annual salary in Canada with provincial take-home pay estimates including CPP and EI.
• TFSA / RRSP Contribution Room Estimate your TFSA or RRSP contribution room for 2026. Includes the withdrawal-room gotcha most Canadians get wrong.

Passwords, QR codes, image tools (compress, resize, convert, favicons), and other day-to-day utilities.

• Password Generator Generate strong, random passwords in your browser. Customize length, character sets, and bulk-generate. Nothing leaves your device.
• QR Code Generator Generate QR codes for URLs, plain text, WiFi networks, and vCards. Download as PNG or SVG. Runs in your browser.
• Image Compressor Compress JPG, PNG, and WebP images in your browser. Adjust quality, see size reduction, download the result.
• Image Resizer Resize images by dimensions, percentage, or longest edge. Supports JPG, PNG, WebP, GIF, and SVG sources.
• Image Format Converter Convert between JPG, PNG, WebP, and GIF in your browser. Accepts SVG as input. Privacy-friendly — nothing uploaded.
• Favicon Generator Generate a complete favicon set from one image — all sizes plus .ico and HTML snippet. Runs in your browser.
• Random Picker Pick N items at random from a list, or shuffle the whole list. Crypto-strong randomness, great for draws and team picks.

Temperature, length, weight, speed, volume, cooking, and colour conversions — built for the metric/imperial mix Canadians live with.

• Colour Converter Convert colours between HEX, RGB, HSL, and OKLCH. Includes a WCAG AA/AAA contrast checker. Runs in your browser.
• Temperature Converter Convert between Celsius, Fahrenheit, and Kelvin instantly. Includes baking and oven reference points.
• Length Converter Convert between metres, kilometres, miles, feet, inches, yards, and nautical miles. Exact ratios.
• Weight Converter Convert between grams, kilograms, pounds, ounces, stones, and tons. Useful for cooking, fitness, and shipping.
• Speed Converter Convert km/h, mph, m/s, ft/s, knots, and mach. Useful for cross-border driving and aviation.
• Volume Converter Convert mL, L, US cups, metric cups, US/Imperial gallons, pints, and quarts. Keeps US and Imperial separate.
• Cooking Converter Density-aware conversion between cups, tablespoons, grams, and ounces for common cooking ingredients. Flour, sugar, butter, and more.

Arithmetic, scientific, fractions, percentages, tips, ages, dates, times, fuel costs, and pet ages — quick answers for everyday questions.

• Basic Calculator A straightforward four-function calculator with percentage and sign change. Mouse, touch, or keyboard.
• Scientific Calculator Full expression-parsing scientific calculator with trig, logs, factorials, and constants. Degree or radian mode.
• Fraction Calculator Exact arithmetic on fractions and mixed numbers. Useful for cooking, woodworking, sewing.
• Percentage Calculator Seven types of percentage calculation in one tool — percent of, increase, decrease, percent change, and more.
• Tip Calculator Calculate restaurant tip and total, split across multiple people. Handles pre-tax vs after-tax correctly.
• Age Calculator Calculate exact age in years, months, days, hours, and minutes. Find next birthday and day of week you were born.
• Date Calculator Add or subtract days from a date, find the duration between two dates, and look up the day of the week for any date.
• Time Calculator Add and subtract time durations, or find the elapsed time between two clock times. Handles overnight spans.
• Fuel Cost Calculator Estimate fuel cost for a trip. Handles L/100km, mpg (US and Imperial), and per-litre or per-gallon pricing.
• Pet Age Calculator Convert your pet's age to human-equivalent years. Dogs (by size), cats, rabbits, parrots, horses, and more.
• Loan Calculator Calculate loan payments and download a full amortization schedule as CSV. For car loans, personal loans, lines of credit.
• Compound Interest Calculator Project savings or investment growth over time with regular contributions. Year-by-year breakdown, downloadable CSV.

BMI, calorie burn, hydration, sleep cycles, running pace — practical health math without the wellness woo.

• BMI Calculator Calculate Body Mass Index in metric or imperial units. WHO categories explained. Screening tool, not medical advice.
• Calorie Burn Calculator Estimate calories burned during exercise using MET values. ~50 activities from walking to CrossFit.
• Water Intake Calculator Estimate daily fluid intake based on weight, activity, climate, and life stage. Sensible math instead of "8 glasses a day".
• Sleep Cycle Calculator Calculate optimal bedtimes and wake times using 90-minute sleep cycles. Wake refreshed at the end of a cycle.
• Pace Calculator Solve for pace, time, or distance. 5K, 10K, half, marathon, and any custom distance. Splits table included.