How-To Guides
Step-by-step guides for the most common things people want to do online — format JSON, generate a secure password, compress a photo, calculate a percentage. Every guide walks through the task and links you straight to the free tool that does it in your browser. No signup, no uploads, no tracking.
How to Format JSON Online (Free, No Signup) — 2026 Guide
Learn how to format and beautify JSON online in seconds. Paste raw JSON, get clean indented output, validate syntax — all free, in your browser, no data sent to a server.
How to Generate a Strong Password Online (Free, Secure)
Generate a cryptographically strong random password in your browser — customizable length, symbols, and exclusions. No account, no server logs, no storage.
How to Count Words Online — Free Word Counter for Essays & Articles
Count words, characters, sentences, paragraphs, and reading time in any text — free, instant, in your browser. Works for essays, articles, emails, and social posts.
How to Compress Images Online Free (JPG, PNG, WebP)
Compress JPG, PNG, and WebP images in your browser — no uploads, no watermarks, no signup. Shrink file size by 60-80% with almost no visible quality loss.
How to Generate a QR Code Online Free (No Signup)
Create a free QR code for any URL, text, or contact info in seconds. Downloads as PNG or SVG. No account, no expiration, no tracking — generated entirely in your browser.
How to Calculate Percentage Online — Every Formula Explained
Calculate percentages, percentage increase/decrease, percent of a number, and what percent X is of Y — free online calculator with worked examples of every formula.
How to Calculate BMI Online — Free BMI Calculator (Metric & Imperial)
Calculate Body Mass Index in kg/m² or lbs/ft. Understand what your BMI number means, its limits, and why athletes and children need different interpretations.
How to Calculate Age Online — Exact Years, Months, and Days
Calculate your exact age in years, months, days, hours, or minutes from any birthdate. Handles leap years correctly and supports date-to-date age comparison.
How to Calculate Mortgage Payment — Free Monthly Payment Calculator
Calculate monthly mortgage payments from loan amount, interest rate, and term. Includes PMI, property tax, and insurance estimates — plus amortization schedule.
How to Encode/Decode Base64 Online (Free, Browser-Based)
Encode strings, files, or images to Base64 and decode Base64 back to plain text — instant, client-side, no uploads. Supports UTF-8, binary, and data URIs.
How to Generate UUID Online — Free UUID v4 & v7 Generator
Generate RFC 4122 UUIDs (v4 random, v1 time-based, v7 sortable) instantly in your browser. Bulk generate hundreds at once — free, no signup, cryptographically random.
How to Convert Text Case Online — UPPERCASE, lowercase, camelCase, snake_case
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more — instant, free, no signup. Perfect for code, headlines, and filenames.
How to Convert HEX to RGB (and RGB to HEX) Online Free
Convert between HEX (#FF5733), RGB (255, 87, 51), HSL, and CMYK color formats instantly. Paste any color value, get every representation — with alpha channel support.
How to Convert Celsius to Fahrenheit Online — Free Temperature Converter
Convert °C to °F (or Kelvin) instantly. Free temperature converter with full formula, common reference points, and reverse conversion — no ads, no signup.
How to Hash a String with SHA-256 Online (Free, Client-Side)
Generate SHA-256, SHA-1, MD5, and SHA-512 hashes in your browser. Free, instant, runs entirely client-side — no strings leave your device.
How to Test Regex Online — Free Regex Tester with Live Match Highlighting
Test regular expressions against sample text with live match highlighting, capture groups, and flag support (g, i, m, s, u). Works with JavaScript, PCRE, and POSIX flavors.
How to Minify JavaScript Online — Free JS Minifier (No Signup)
Minify JavaScript in the browser to shrink bundle size 40-60% and speed up page load. Free, client-side, preserves behavior. Works with ES modules and modern syntax.
How to Convert JSON to CSV Online — Free, No Installation
Convert JSON arrays to CSV spreadsheets in your browser. Handles nested objects, arrays, mixed schemas, and exports ready-to-open Excel, Numbers, or Google Sheets files.
How to Format SQL Online — Free SQL Beautifier (Postgres, MySQL, SQLite)
Format and beautify SQL queries online — proper indentation, capitalized keywords, aligned clauses. Supports Postgres, MySQL, SQLite, SQL Server syntax. Free, no signup.
How to Decode JWT Online — Free JWT Decoder (Header, Payload, Signature)
Decode JWT tokens instantly to read the header and payload. Verify the signature algorithm, inspect claims, and check expiry — free, in your browser, nothing logged.
How to Convert Markdown to HTML Online — Free, Instant Preview
Convert Markdown to clean HTML in your browser with live preview. Supports GitHub-flavored Markdown, tables, code highlighting, and safe HTML output. Free, no signup.
How to Generate Lorem Ipsum Online — Free Placeholder Text Generator
Generate Lorem Ipsum placeholder text in paragraphs, words, or characters. Free, instant, no signup. Classic Latin, modern alternatives, and custom lengths.
How to Convert Unix Timestamp Online — Free Epoch Time Converter
Convert Unix timestamps (epoch seconds or milliseconds) to human-readable dates and back. Supports any timezone, ISO 8601 output, and batch conversion.
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