All Free Online Tools
149 tools — all free, no signup required, nothing ever stored.
Image Tools
Convert, compress, resize, crop, and edit your images Need one tool for every format? Try the Universal Image Converter
PNG to JPG Converter
Convert PNG images to JPG format online for free. Reduce file size while keeping great quality. No signup, no upload limits.
JPG to PNG Converter
Convert JPG/JPEG images to lossless PNG format online for free. Perfect for transparency or editing. No signup required.
PNG to WebP Converter
Convert PNG images to WebP for smaller file sizes and faster web performance. Free, instant, no signup.
WebP to PNG Converter
Convert WebP images to PNG format online for free. Get lossless, editable PNG files from any WebP source.
JPG to WebP Converter
Convert JPG images to WebP for smaller file sizes and better web performance. Free online tool, no signup needed.
WebP to JPG Converter
Convert WebP images to JPG format online for free. Get widely compatible JPG files from WebP sources.
HEIC to JPG Converter
Convert iPhone HEIC/HEIF photos to JPG online for free. Share Apple photos on any device or platform.
SVG to PNG Converter
Convert SVG vector graphics to PNG images online for free. Rasterize icons, logos, and illustrations instantly. No signup required.
SVG to JPG Converter
Convert SVG vector graphics to JPG images online for free. Rasterize icons, logos, and illustrations into compact, widely compatible JPGs.
SVG to WebP Converter
Convert SVG vector graphics to WebP images online for free. Rasterize icons, logos, and illustrations into a modern, transparency-friendly format.
Image Compressor
Compress PNG, JPG, and WebP images online for free. Reduce file size without visible quality loss. No signup, batch support.
Image Resizer
Resize images to exact pixel dimensions online for free. Lock aspect ratio, use social presets. No signup needed.
Image Cropper
Crop images online with a drag-and-drop crop box. Supports 1:1, 4:3, 16:9 and free aspect ratios. Free, no signup.
Image Watermark Tool — Add Text & Logo Watermarks Free
Add text or logo watermarks to images online for free. Choose position, opacity, and color. No signup required.
Background Remover — Remove Image Background Free Online
Remove the background from any image automatically online for free. Get a transparent PNG in seconds. No signup required.
Image to PDF Converter
Convert PNG, JPG, WebP, and HEIC images to PDF online for free. Combine multiple images into one PDF. No signup required.
Image to Text (OCR) — Extract Text from Images Free
Extract text from PNG, JPG, WebP, and HEIC images using OCR online for free. Instantly convert image text to editable text. No signup required.
Color Tools
Extract color palettes straight from your images
Extract Dominant Colors from Image
Upload an image and instantly extract its most dominant colors as a copyable hex palette. Free online color palette generator, no signup required.
Color Converter — HEX, RGB, HSL, HSV, CMYK
Convert colors between HEX, RGB, HSL, HSV, and CMYK instantly. Edit any format and watch the rest update live. Free online color converter, no signup required.
Instagram Tools
Purpose-built croppers and resizers for Stories, Reels, posts, and profile pictures
Instagram Story Cropper
Crop any photo to the perfect 9:16 Instagram Story size online. Pan, zoom, rotate, and preview Instagram's UI overlays before you post. Free, no signup.
Instagram Reel Cropper
Crop any photo to the 9:16 frame Instagram Reels need online. Preview the caption, action-button, and progress-bar overlays before you post. Free, no signup.
Instagram Carousel Cropper
Split one wide photo into 2–10 equal Instagram carousel slides online. Pan, zoom, and preview the swipe dividers before you download. Free, no signup.
Instagram Profile Picture Cropper
Crop a photo into an Instagram profile picture with a live circular preview online. See exactly how your photo will look once Instagram applies its circle. Free, no signup.
Instagram Post Resizer
Resize any photo to the exact Instagram post size online — Square, Portrait, or Landscape. Preview the profile-grid crop before you download. Free, no signup.
Instagram Story Resizer
Resize any photo to the exact Instagram Story size (1080×1920, 9:16) online. Fix low resolution and blurry uploads before you post. Free, no signup.
Instagram Reel Resizer
Resize any photo to the exact Instagram Reel size (1080×1920, 9:16) online. Fix low resolution and blurry uploads before you post. Free, no signup.
Instagram Caption Formatter
Format Instagram captions online: preserve paragraph spacing, check the 2,200-character limit, and hide hashtags below the fold. Free, no signup.
Instagram Safe Area Preview
Preview exactly where Instagram's UI covers your Story, Reel, or feed post — with or without uploading a photo. Free, no signup, no editing required.
TikTok Tools
Video tools built for TikTok's vertical format
TikTok Video Cropper
Crop any video to TikTok's 9:16 format online. Choose which part of a wide or square video to keep, then download a ready-to-post MP4. Free, no signup.
TikTok Video Compressor
Compress any video online without cropping or changing its shape. Pick a quality level, shrink the file size, and download a smaller MP4 ready to upload to TikTok. Free, no signup.
TikTok Video Resizer
Resize any video to TikTok's exact 1080×1920 frame online without cropping anything out. Choose a blurred or solid black background to fill the gaps. Free, no signup.
YouTube Tools
Grab thumbnails and assets straight from YouTube videos
Pinterest Tools
Download videos straight from Pinterest pins
PDF Tools
Compress, convert, merge, split, and watermark PDF files
PDF to Text Converter — Extract Text from PDF Free Online
Extract text from PDF files online for free. Works with both digital PDFs (native text extraction) and scanned PDFs (OCR). No signup required.
PDF Compressor — Reduce PDF File Size Free Online
Compress PDF files online for free. Reduce PDF file size instantly — no signup, no watermarks, no upload limits. Your files are never stored.
Merge PDF Files Online — Free PDF Merger
Combine multiple PDF files into one in seconds. Free online PDF merger — reorder pages, no signup, no watermarks, files never stored.
PDF Splitter — Extract PDF Pages Free Online
Extract specific pages from any PDF for free. Select pages visually or define ranges, then download your new PDF instantly — no signup, no watermarks.
Organize PDF Pages — Free Drag & Drop Reorder Online
Drag and drop PDF pages to rearrange them in any order. Delete unwanted pages and download the reorganized PDF instantly — free, no sign-up needed.
PDF to JPG Converter — Free Online PDF to Image
Convert any PDF to high-quality JPG images online for free. Choose 72, 150, or 300 DPI, preview all pages, and download individual JPGs or a ZIP archive — no signup required.
PDF to PNG Converter — Free Online PDF to Image
Convert any PDF to lossless PNG images online for free. Choose 72, 150, or 300 DPI, preview all pages, and download individual PNGs or a ZIP archive — no signup required.
PDF Watermark — Add Text or Image Watermark to PDF Free
Add text or image watermarks to every page of your PDF free online. Choose diagonal, centered, header, or footer placement — no upload, no signup required.
PDF Page Numberer — Add Page Numbers to PDF Free
Add page numbers to your PDF free online. Choose the position, starting number, and a custom prefix or suffix like '-1-' — no upload, no signup required.
Extract Images from PDF — Save Embedded Photos as PNG
Pull every embedded photo out of a PDF and download them as PNG files, individually or as a ZIP. Free online tool, runs entirely in your browser — no signup, no upload.
Date Tools
Calculate date differences, business days, and date formats
Multilingual Date Converter — Format Dates in Any Language
Format any date in 38 languages and locales instantly. See Full, Long, Medium, and Short date formats for English, Spanish, Arabic, Japanese, and more.
Date Difference Calculator — Days Between Two Dates
Find the exact number of days, weeks, months, and years between any two dates. Free date difference calculator — instant results, no signup required.
Business Days Calculator — Count or Add Working Days
Count business days between two dates or add working days to a date. Excludes weekends automatically. Free online tool — instant results, no signup required.
Date & Time Duration Calculator
Calculate the exact duration between two dates and times, down to the second. Free online date and time calculator with quick-fill shortcuts and workday counting.
Advanced Math Operations
Calculators for algebra, probability, combinatorics, number theory, and graph theory
Scientific Calculator — Free Online Calculator
Free online scientific calculator with trigonometric, logarithmic, exponential, and factorial functions. Switch between degrees and radians, use memory keys, and view calculation history.
Factorial Calculator — Calculate n! Online
Calculate the factorial of any non-negative integer (n!) instantly. Free factorial calculator with step-by-step expansion, scientific notation, and digit-count analysis for values up to 1,000,000.
Quadratic Formula Calculator — Solve ax² + bx + c = 0
Solve quadratic equations ax² + bx + c = 0 instantly using the quadratic formula. Free calculator with step-by-step solutions, discriminant analysis, and vertex form conversion.
Permutation Calculator — Calculate P(n,r) Online
Calculate permutations P(n,r) — the number of ways to arrange r items from n total items where order matters. Free calculator with step-by-step solutions and formula breakdowns.
Combination Calculator — Calculate C(n,r) Online
Calculate combinations C(n,r) — the number of ways to choose r items from n total items where order doesn't matter. Free calculator with step-by-step solutions and Pascal's Triangle visualization.
Binomial Coefficient Calculator — Calculate C(n,k) Online
Calculate binomial coefficients C(n, k) instantly with step-by-step solutions, a Pascal's Triangle row visualization, and the matching term from the binomial expansion of (a + b)ⁿ.
Complex Number Calculator — Add, Subtract, Multiply, Divide
Perform complex number arithmetic — add, subtract, multiply, and divide two complex numbers instantly. Free calculator with modulus, argument, conjugate, and step-by-step results.
Probability Calculator — Addition Rule, Conditional & Bayes' Theorem
Calculate probabilities using the addition rule, conditional probability, and Bayes' theorem. Free calculator with three modes, step-by-step solutions, and instant percentage results.
Rounding Calculator — Compare 6 Rounding Methods Side by Side
Round any number to a chosen number of decimal places and compare 6 rounding methods side by side — half up, half down, half away from zero, half to even (banker's rounding), ceiling, and floor.
Percent Growth Rate Calculator — Simple Growth & CAGR
Calculate percent growth rate using simple growth and compound annual growth rate (CAGR). Free calculator with year-by-year projections and step-by-step results.
Proportion Calculator — Solve a/b = c/d Online
Solve proportion problems instantly — enter three known values in a/b = c/d and find the missing fourth value. Free calculator with step-by-step cross-multiplication.
Sum of Positive Integers Calculator — Gauss Formula Online
Calculate the sum of consecutive positive integers using the Gauss summation formula. Free calculator with step-by-step breakdown for any range, from 1 to n or between any two bounds.
Bitwise Calculator — AND, OR, XOR, NOT, Bit Shifts Online
Perform bitwise operations — AND, OR, XOR, NOT, left shift, and right shift — on integers instantly. Free calculator with an interactive visual bit diagram for every operation.
Set Theory Calculator — Union, Intersection, Difference & More
Perform set operations instantly — union, intersection, difference, symmetric difference, Cartesian product, power set, and complement. Free calculator with step-by-step results.
Truth Table Generator — Boolean Logic Expressions Online
Generate truth tables for any boolean logic expression — AND, OR, NOT, XOR, NAND, NOR, and conditional operators. Free calculator with automatic tautology and contradiction detection.
Exponents Calculator — Calculate Powers Online
Calculate exponents (powers) with high precision. Supports fractional exponents, negative exponents, and provides detailed step-by-step solutions and exponent rule explanations.
Scientific Notation Calculator — Convert & Calculate Online
Convert numbers to scientific notation and perform arithmetic (+, -, ×, ÷) between values in scientific notation. Free calculator with step-by-step explanations.
Significant Figures Calculator — Count & Round Sig Figs Online
Round numbers to significant figures, count sig figs with digit-by-digit analysis, and perform arithmetic with proper significant figure rules. Free calculator with three dedicated modes.
Golden Ratio Calculator — Phi Proportions Online
Calculate golden ratio proportions from any number. Generate phi-based sequences, find complementary segments, and golden rectangle dimensions with step-by-step explanations.
Polynomial Roots Calculator — Solve Equations Up to Degree 4
Calculate the roots of polynomial equations up to degree 4 with step-by-step solutions. Supports linear, quadratic, cubic, and quartic equations, including complex roots.
Poisson Distribution Calculator — Event Probability Online
Calculate Poisson probabilities instantly — enter a rate (λ) and event count (k) to find P(X = k), cumulative probability, mean, and variance. Free calculator with step-by-step formula breakdown.
Binomial Probability Distribution Calculator — P(X=k) Online
Calculate binomial probabilities instantly — enter trials (n), success probability (p), and successes (k) to find P(X = k), cumulative probability, mean, and variance. Free calculator with step-by-step breakdown.
Probability Distribution Calculator — Mean, Variance & Std Dev
Calculate the mean, variance, and standard deviation of any custom discrete probability distribution. Free calculator that validates your probabilities sum to 1 with step-by-step statistics.
Negative Binomial Distribution Calculator — Failures Before Success
Calculate negative binomial probabilities instantly — enter successes needed (r), success probability (p), and failures (k) to find P(X = k), mean, and variance. Free calculator with step-by-step formula.
Central Limit Theorem Calculator — Sampling Distribution Online
Calculate the sampling distribution's standard error and probability using the Central Limit Theorem. Enter population mean, standard deviation, and sample size. Free calculator with step-by-step z-scores.
Exponential Growth Calculator — A = A₀e^(rt) Online
Calculate exponential growth using A = A₀e^(rt) — enter initial amount, growth rate, and time to find the final amount and doubling time. Free calculator with step-by-step solution.
Exponential Decay Calculator — A = A₀e^(-rt) Online
Calculate exponential decay using A = A₀e^(-rt) — enter initial amount, decay rate, and time to find the remaining amount and half-life. Free calculator with step-by-step solution.
Half-Life Calculator — Solve N = N₀(1/2)^(t/half-life) Online
Solve half-life problems instantly — enter any three of initial amount, remaining amount, time, and half-life to find the fourth. Free calculator with step-by-step algebra.
Permutations with Repetition Calculator — nʳ Online
Calculate permutations with repetition (nʳ) instantly — enter the number of choices (n) and selections (r) to find how many ordered sequences are possible with replacement allowed.
Venn Diagram Generator (3 Sets) — Visualize Set Overlaps Online
Generate a 3-set Venn diagram instantly — enter three sets and see every region (A only, B only, overlaps, and the shared intersection) visualized and counted. Free calculator with a live SVG diagram.
Gamma Function Calculator — Γ(x) Online
Calculate the Gamma function Γ(x) instantly for any real number, including non-integers. Free calculator using the Lanczos approximation with a factorial cross-check for positive integers.
Error Function Calculator — erf(x) Online
Calculate the error function erf(x) instantly for any real number. Free calculator using the Abramowitz-Stegun numerical approximation with step-by-step output.
Complementary Error Function Calculator — erfc(x) Online
Calculate the complementary error function erfc(x) instantly for any real number. Free calculator using the Abramowitz-Stegun numerical approximation with step-by-step output.
Antilog Calculator — Inverse Logarithm Online
Calculate the antilogarithm (inverse log) instantly for base 10, base e (natural), or any custom base. Free calculator with step-by-step solution.
Sum of Squares Calculator — Σi² Formula Online
Calculate the sum of squares of the first n positive integers instantly using the closed-form formula n(n+1)(2n+1)/6. Free calculator with exact BigInt precision.
Sum of Cubes Calculator — Σi³ Formula Online
Calculate the sum of cubes of the first n positive integers instantly using the closed-form formula [n(n+1)/2]². Free calculator with exact BigInt precision.
Entropy Calculator — Shannon Entropy (Bits & Nats) Online
Calculate the Shannon entropy H = −Σp·log₂p of any probability distribution instantly, in bits or nats. Free calculator with step-by-step breakdown.
Boolean Algebra Simplifier — Quine-McCluskey Minimizer Online
Simplify any boolean expression into its minimal sum-of-products form using the Quine-McCluskey algorithm. Free calculator supporting up to 6 variables with prime implicants shown.
Karnaugh Map (K-Map) Solver — 2 to 4 Variables Online
Solve a Karnaugh map for 2, 3, or 4 variables from a minterm list. Free K-map solver with a visual grid, grouped cells, and the minimized sum-of-products expression.
Modular Exponentiation Calculator — Fast bᵉ mod m Online
Calculate bᵉ mod m for arbitrarily large exponents using fast square-and-multiply exponentiation. Free calculator with BigInt precision, essential for cryptography.
Modular Multiplicative Inverse Calculator — Solve ax ≡ 1 (mod m)
Find the modular multiplicative inverse of a modulo m using the extended Euclidean algorithm. Free calculator with BigInt precision and existence check.
Euler's Totient Function Calculator — φ(n) Online
Calculate Euler's totient function φ(n) — the count of integers from 1 to n coprime to n — via prime factorization. Free calculator showing the full factorization.
Extended Euclidean Algorithm Calculator — gcd + Bézout Coefficients
Compute gcd(a, b) and the Bézout coefficients x, y satisfying ax + by = gcd(a, b) using the extended Euclidean algorithm. Free calculator with BigInt precision.
Chinese Remainder Theorem Calculator — Solve Modular Systems
Solve a system of congruences x ≡ aᵢ (mod mᵢ) for pairwise-coprime moduli using the Chinese Remainder Theorem. Free calculator with BigInt precision.
Primitive Root Calculator — Find a Generator mod n
Find the smallest primitive root modulo n — a generator of the multiplicative group mod n — with existence checking via Euler's totient function. Free calculator.
Continued Fraction Calculator — Expand & Evaluate Online
Expand any decimal number or fraction into its continued fraction terms [a₀; a₁, a₂, ...] and see every convergent. Free calculator with exact BigInt precision.
Stirling Numbers Calculator — First & Second Kind Online
Calculate Stirling numbers of the first kind c(n,k) or second kind S(n,k) via their standard recurrences. Free calculator with exact BigInt precision.
Derangement (Subfactorial) Calculator — !n Online
Calculate the subfactorial !n — the number of derangements of n objects, where no object stays in its original position. Free calculator with exact BigInt precision.
Pigeonhole Principle Calculator — Guaranteed Minimum Online
Calculate the guaranteed minimum number of items in some container using the pigeonhole principle ⌈n/m⌉. Free calculator with step-by-step proof reasoning.
Inclusion-Exclusion Calculator — Union of 2 or 3 Sets Online
Calculate the size of the union of 2 or 3 sets using the inclusion-exclusion principle from individual and intersection sizes. Free calculator with step-by-step breakdown.
Beta Function Calculator — B(x,y) Online
Calculate the Beta function B(x,y) = Γ(x)Γ(y)/Γ(x+y) for positive x and y. Free calculator using the Lanczos Gamma approximation.
Exponential Integral Calculator — Ei(x) Online
Calculate the exponential integral Ei(x) for any nonzero real x using a convergent series approximation. Free calculator with step-by-step breakdown.
Dijkstra's Shortest Path Calculator — Weighted Graphs Online
Find the shortest path and total distance between two nodes in a weighted graph using Dijkstra's algorithm. Free calculator with a simple edge-list input.
Minimum Spanning Tree Calculator — Kruskal's Algorithm Online
Find the minimum spanning tree of a weighted graph using Kruskal's algorithm. Free calculator with a simple edge-list input and union-find cycle detection.
Adjacency Matrix Calculator — Build a Graph Matrix Online
Build and display the adjacency matrix of a graph from a simple edge-list input, along with its degree sequence. Free calculator, weighted or unweighted.
Graph Coloring Calculator — Welsh-Powell Algorithm Online
Color a graph's vertices so no two connected nodes share a color, using the greedy Welsh-Powell algorithm. Free calculator with a simple edge-list input.
Graph Degree Sequence Validator — Erdős–Gallai Theorem Online
Check whether a sequence of numbers is a valid (graphical) degree sequence using the Erdős–Gallai theorem. Free calculator with step-by-step verification.
Topological Sort Calculator — Kahn's Algorithm Online
Find a valid topological order for a directed graph using Kahn's algorithm, or detect that no order exists because of a cycle. Free calculator with a simple edge-list input.
Hamiltonian Path Checker — Visit Every Node Once Online
Check whether a graph has a Hamiltonian path — a path visiting every node exactly once — via backtracking search. Free calculator, scoped to graphs of up to 10 nodes.
Planar Graph Checker — Kuratowski-Style Test Online
Check whether a graph is planar using the E ≤ 3V−6 necessary condition plus an explicit K₅/K₃,₃ subgraph search for small graphs. Free calculator, not a full planarity test.
Network Flow Calculator — Max Flow via Edmonds-Karp Online
Find the maximum flow from a source to a sink in a capacitated directed graph using the Edmonds-Karp algorithm. Free calculator with a simple edge-list input.
Markov Chain Steady State Calculator — Stationary Distribution Online
Find the stationary (steady-state) distribution of a Markov chain from its transition matrix using power iteration. Free calculator, instant results.
Linear Programming Solver — 2-Variable Corner-Point Method Online
Solve a 2-variable linear program by finding and evaluating every corner point of the feasible region. Free calculator, maximize or minimize with linear constraints.
Traveling Salesman Solver — Exact Held-Karp DP Online
Find the exact shortest round-trip route visiting every city exactly once, using the Held-Karp dynamic programming algorithm. Free calculator, up to 12 cities.
Stable Marriage Problem Solver — Gale-Shapley Algorithm Online
Find a stable matching between two equal-sized groups from their preference lists using the Gale-Shapley algorithm. Free calculator, guaranteed stable results.
Ring and Field Calculator — Modular Arithmetic in ℤₙ Online
Perform +, −, ×, ÷ in ℤₙ (integers mod n), see whether ℤₙ is a field or just a ring, and list its units and zero divisors. Free calculator, instant results.
Group Theory Order Calculator — Element Order in ℤₙ Online
Find the order of an element in (ℤₙ, +) or (ℤ/nℤ)ˣ, with a Lagrange's theorem divisibility check shown as a step. Free calculator, instant results.
QR & Links
Generate, scan, and shorten links
QR Code Generator — Create QR Codes Free Online
Create QR codes from any URL, text, email, or phone number online for free. Download as PNG or SVG. No signup required.
QR Code Scanner — Read & Decode QR Codes Online Free
Upload an image containing a QR code to decode it instantly online. Free QR reader — no app, no signup required.
Document Tools
Create and manage professional documents
Free Invoice Generator — Create PDF Invoices Online
Create professional PDF invoices online for free. Add your logo, line items, tax, and discount. Download instantly — no signup required.
Markdown to PDF Converter — Convert MD to PDF Online
Convert Markdown to a real, formatted PDF — rendered headings, tables, syntax-highlighted code blocks, and lists. Paste or upload a .md file, download instantly.
Marketing Tools
SEO audits, meta tags, robots.txt, and campaign tracking tools
Website to PNG, PDF, WebP & JPG — Free Screenshot Tool
Convert any website URL to PNG, PDF, WebP or JPG for free. Screenshot any webpage in desktop, tablet or mobile view. Instant — no signup required.
Tech Stack Detector — Identify Any Website's Technology
Instantly detect the CMS, JavaScript framework, analytics tools, CDN, and server technology behind any website. Free online tech stack checker — no signup required.
UTM Builder — Create Trackable Campaign URLs
Build UTM-tagged URLs for Google Analytics campaign tracking. Add source, medium, campaign, term, and content parameters instantly. Free, runs in your browser.
Robots.txt Generator — Create a Valid Robots.txt File
Generate a valid robots.txt file with Allow/Disallow rules, sitemap directive, and crawl-delay. Free, browser-based robots.txt builder — download or copy instantly.
Meta Tag Generator — SEO Title, Description & Open Graph Tags
Generate title, meta description, canonical, Open Graph, and Twitter Card tags with a live Google search result preview. Free, browser-based, no signup.
Robots.txt Tester — Check If a URL Is Allowed or Blocked
Test whether a specific path is allowed or disallowed by a robots.txt file, for any user-agent. Paste robots.txt or fetch it live from any site. Free, instant.
Website Intelligence Extractor — SEO & Metadata Snapshot Tool
Extract title, meta description, Open Graph tags, headings, word count, and internal/external link counts from any URL in one request. Free SEO snapshot tool.
Favicon Generator — Create favicon.ico, PNGs & Manifest
Upload a logo and get a complete favicon package: favicon.ico, all standard PNG sizes, apple-touch-icon, Android/PWA icons, a web manifest, and ready-to-paste HTML tags. Free, no signup.
Developer Tools
Encode, hash, format, and test — utilities for developers
Random Password Generator — Free & Secure
Generate strong, random passwords instantly. Choose length 8–64, select character sets, and copy with one click. Free, no signup, runs entirely in your browser.
Base64 Encoder / Decoder — Free Online Tool
Encode text to Base64 or decode Base64 back to plain text instantly in your browser. Handles UTF-8 and Unicode correctly. Free, no signup, no data sent to a server.
URL Encoder / Decoder — Free Online Percent-Encoding Tool
Encode text for safe use in URLs or decode percent-encoded URLs back to readable text. Handles spaces, Unicode, and reserved characters correctly. Free, runs entirely in your browser.
JSON Formatter & Validator — Free Online Beautifier
Format and validate JSON with proper indentation, or minify it to save space. Instantly catches syntax errors with a clear message. Free, no signup, runs entirely in your browser.
Markdown Preview
Paste Markdown and see it rendered as HTML instantly, side by side. Supports GitHub Flavored Markdown (tables, task lists) and syntax-highlighted code blocks. Free, runs entirely in your browser.
Hash Generator — MD5, SHA-1, SHA-256, SHA-512 Online
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text instantly. All five algorithms computed simultaneously, in your browser. Free, no signup required.
.htpasswd Generator — Free Apache Basic Auth Password Tool
Generate .htpasswd file entries for Apache Basic Authentication. Supports {SHA} and APR1-MD5 formats. Free, no signup, computed entirely in your browser.
Regex Tester — Free Online Regular Expression Tool
Test regular expressions against sample text with live match highlighting, capture groups, and flag support (g, i, m, s, u). Free, no signup, runs entirely in your browser.
Timestamp Converter — Unix Epoch to Date & Back
Convert Unix timestamps (seconds or milliseconds) to human-readable dates, or convert any date back to an epoch timestamp. Shows local time and UTC. Free, runs in your browser.
Cron Expression Generator
Build a cron expression with an easy field-by-field editor and see a plain-English description of the schedule instantly. Free, runs entirely in your browser.
Sitemap Checker — Validate XML Sitemaps & Find Broken Links
Check any website's XML sitemap for errors, broken links, and missing metadata. Free online sitemap validator with live URL status checks — no signup required.
Text Tools
Word tools, text utilities, and language helpers
Word Unscrambler — Find All Valid Words from Scrambled Letters
Unscramble any set of letters and find every valid English word you can make. Free, instant, no sign-up — perfect for Scrabble, Words with Friends, and word puzzles.
Numbers to Words Converter
Convert any number into spelled-out words instantly — cardinal, ordinal, and currency forms, in over 70 languages. Free online tool, no signup required.
Word Counter — Free Online Word & Character Count Tool
Count words, characters, sentences, and paragraphs instantly as you type. Includes estimated reading time. Free, no signup, runs entirely in your browser.
Remove Duplicate Lines
Paste a list or block of text and instantly remove duplicate lines, keeping the first occurrence and original order. Case-sensitive and whitespace-trim options. Free, runs entirely in your browser.
Find & Replace
Find and replace text instantly, with optional regex support, case-sensitive matching, and whole-word matching. Free, runs entirely in your browser.
Lorem Ipsum Generator — Free Placeholder Text Tool
Generate classic Lorem Ipsum placeholder text by paragraphs, sentences, or words. Free online dummy text generator for mockups and designs, no signup required.
Fancy Text Generator — Free Unicode Font Style Converter
Turn plain text into fancy Unicode fonts — bold, italic, script, circled, monospace, and more — for social media bios and posts. Free, copy with one click.
Online Notepad — Free Browser-Based Text Editor
A simple, distraction-free online notepad that autosaves to your browser as you type. No account, no sync, no server — your notes stay on your device.
Email Extractor — Extract Email Addresses from Text
Paste any text, HTML, or document content and instantly extract every email address it contains. Remove duplicates, sort alphabetically, and download the results as a CSV. Free, runs entirely in your browser.
Email Validator — Check If Email Addresses Are Valid
Paste a list of email addresses, one per line, and instantly check which ones are validly formatted. Get a specific reason for every failure, typo suggestions for common domains, and a CSV export. Free, runs entirely in your browser.
Wheel of Names — Free Random Name Picker Spinner
Spin the free online Wheel of Names to pick a random winner instantly. Add unlimited names, remove winners after each spin, and draw fair results in your browser.
Coin Flip — Free Online Heads or Tails Simulator
Flip a virtual coin online for a fair heads or tails result instantly. Flip one coin with a realistic animation, or flip up to 100 at once and track your results.