Free Online Web & Browser Tools

Trace where any link goes before you click it and see the final destination URL.

Generate a correct rel=canonical tag and check for duplicate content issues.

View any domain's robots.txt file and see which pages are blocked from Google.

Look up any HTTP status code and get a plain-English explanation.

Build UTM-safe campaign names with validation and a full URL builder.

See your browser name, version, operating system, screen size, and more.

See your public IP address, location, internet provider, and timezone.

See your screen resolution, viewport size, device pixel ratio, and display details.

Decode LED blink sequences, BIOS beep codes, OBD-I fault codes, and Morse code.

Count words, characters, sentences, paragraphs, and reading time instantly.

Convert text to uppercase, lowercase, title case, sentence case, or camelCase.

Compare two blocks of text and see exactly which lines were added or removed.

Generate placeholder text by the paragraph, sentence, or word for any layout.

Encode special characters into safe HTML entities, or decode them back.

Encode special characters for safe URLs, or decode percent-encoded URLs.

Encode text to Base64 or decode a Base64 string back to plain text.

Generate SHA-256, SHA-1, and SHA-512 cryptographic hashes from any text.

Test how strong your password is and get tips to make it more secure.

Generate strong, random passwords with custom length and character options.

Detect confusable characters like I, l, 1, O, and 0 in passwords and codes.

Encode and decode messages with the Trifid cipher with full coordinate breakdown.

Convert color codes between HEX, RGB, and HSL with a visual picker.

Generate a custom checkerboard pattern with any colors. Outputs SVG and CSS.

Calculate the golden ratio, Fibonacci sequence, and typographic scale for any dimension.

Upload a PDF to check image DPI and see if it is ready for professional printing.

Identify video resolution standard, aspect ratio, and recommended streaming bitrate.

Create printable price tags in four styles with sale discount and multi-tag print sheets.

Generate QR codes for URLs, email, WiFi, and vCards. Download as PNG or SVG.

Create clickable sms: links with pre-filled phone number and message. Outputs a QR code.

Generate a long string of any emoji with separators, prefix text, and UTF-8 byte count.

Generate realistic tracking numbers for UPS, FedEx, USPS, DHL, and Amazon.

Generate a random matrix with trace, determinant, and export as JSON, CSV, or LaTeX.

Generate probability weights using Dirichlet distribution sampling. Copy as JSON or CSV.

Generate Panama, Pitman, 4-on-4-off, or continental rotating shift schedules.

Generate YouTube chapter timestamps with validation and per-chapter deep-link URLs.

Paste any block of text and pull out all email addresses in one click.

Calculate your exact age in years, months, and days, plus days until your next birthday.

Format messy JSON into readable output and validate it for errors instantly.

Minify your CSS to reduce file size and speed up your website in one click.

Convert numbers between binary, decimal, hexadecimal, and octal instantly.

Convert Unix timestamps to readable dates, or any date to a timestamp.

Generate Lua boilerplate: OOP classes, modules, coroutines, event emitters, and state machines.

Generate complete Lua scripts for Love2D, Roblox, ComputerCraft, WoW addons, Hammerspoon, and Redis.

Generate fake malware names in antivirus naming conventions with threat profiles and severity ratings.

Generate trendy artisan business names for coffee shops, breweries, and startups with brand archetype scores.

Generate pub, bar, and tavern names by style: dive bar, speakeasy, cocktail lounge, tiki bar, and more.

Convert English text to Korean-style Unicode: angular UCAS, phonetic Hangul, or fullwidth.

Convert text to HeLlO WoRlD style with strict, random (cryptographic), or block modes.

Flip text and emojis upside down using Unicode character substitution.

Create 3D vanishing point text with per-character projection math. Download as PNG.

Calculate your Facebook page engagement rate by post type and benchmark against industry averages.

Estimate your organic, paid, and viral reach from followers, post type, and budget inputs.

Calculate your revenue per 1,000 views or project earnings from a target RPM and view count.

Convert a raw Facebook view count into low, mid, and high earnings estimates by niche and region.

Estimate monthly Facebook page earnings from In-Stream Ads, Reels, and Stars combined.

Calculate page income potential, sponsored post rates, and overall page market valuation.

Break down your total Facebook creator income across all active monetization streams.

Estimate Reels overlay ad earnings and compare Facebook Reels pay to TikTok and YouTube Shorts.

Project Content Monetization Program earnings from bonus multipliers and performance tiers.

See earnings across all Facebook monetization streams for a given content volume and niche.

Track your progress toward Facebook monetization requirements with a visual progress bar per metric.

Check which Facebook monetization programs you qualify for based on your current page stats.

Calculate Facebook fees for Marketplace sales, Stars purchases, fan subscriptions, and payments.

Estimate reseller profit and optimal listing price for Facebook Marketplace items including shipping.

See the exact Facebook selling fee and net payout for any Marketplace listing price.

Estimate Facebook ad audience reach and CPM from your campaign budget and targeting inputs.

Calculate Facebook ads return on investment, ROAS, cost per acquisition, and profit margin.