Everyday Browser Tools.
Built for Developers — 100% Offline.

Combine multiple PDF documents into a single organized file in your chosen order.

Extract specific pages or page ranges from a PDF document into separate files.

Preview page thumbnails, reorder pages, rotate sideways pages, and delete unwanted sheets.

Convert multiple images into a clean PDF with page size, orientation, and margin settings.

Convert PDF document pages into high-resolution PNG or JPG image files.

Extract all selectable text from PDF documents while preserving page structure and word counts.

Add customizable text watermarks across PDF pages with rotation, opacity, and color options.

Insert clean page numbers into headers or footers with customizable format and starting offsets.

Extract machine-readable text from scanned documents, photos, and receipts using in-browser OCR.

Build professional resumes with live visual preview and pixel-perfect browser Save as PDF export.

View and edit title, author, subject, keywords, and creator metadata of PDF files directly in your browser.

Convert color PDF documents to clean black-and-white / grayscale to reduce printer ink consumption and file size.

Flatten interactive fillable PDF forms into read-only, non-editable static PDF documents.

Convert bright white PDF pages into eye-friendly dark mode for comfortable night reading and studying.

Rotate specific individual pages in a PDF document (90°, 180°, or 270°) without altering other pages.

Duplicate individual pages or page ranges multiple times within a PDF for printable tickets, forms, and badges.

Analyze text statistics in real time: words, characters, sentences, paragraphs, and reading times.

Convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, snake_case, and more.

Clean up text by removing extra spaces, trailing whitespace, empty lines, HTML tags, and tabs.

Remove duplicate lines from lists and datasets while preserving original sequence or sorting.

Compare two text snippets side-by-side or inline to spot additions, deletions, and modifications.

Search and replace text with plain-string or regular expression matching and live match counters.

Convert article titles and headlines into clean, SEO-friendly URL slugs with custom separators.

Edit Markdown with live side-by-side synchronized preview, GitHub formatting, and HTML export.

Analyze text readability with Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, sentence count, and syllable metrics.

Sort text lists alphabetically (A-Z, Z-A), by character length, reverse list order, or shuffle randomly with line prefix numbering.

Translate English text to Morse code and decode Morse signals back to text with Web Audio API sound playback.

Convert plain text to 8-bit binary code (0s and 1s) and decode binary byte streams back to readable ASCII text.

Encrypt and decrypt text using Caesar shift ciphers and classic ROT13 with interactive shift key slider.

Test words, phrases, numbers, and poetry to check if they read identically backward and forward, with detailed character breakdown.

Find anagrams, word unscramblers, and letter permutations instantly with dictionary lookups and letter frequency charts.

Transform plain text into chaotic, spooky, distorted glitch text using combining Unicode diacritical marks.

Format, validate, and minify JSON data with precise line/column syntax error detection.

Convert data between CSV and JSON with support for quoted strings, custom delimiters, and Unicode.

Encode plain text to Base64 and decode Base64 back to text with full UTF-8 Unicode support.

Encode and decode URLs with clear distinction between query parameters and full URLs.

Convert special characters to safe HTML entities and decode entities back to readable text.

Test regular expressions with flags, highlighted matches, capture groups, and ReDoS safety timeouts.

Generate cryptographically secure Version 4 UUIDs (GUIDs) individually or in bulk.

Compute cryptographic hashes (SHA-256, SHA-1, SHA-384, SHA-512, MD5) for text and local files.

Minify HTML and CSS code to reduce file transfer size, or beautify minified code with clean indentation.

Build cron schedules with interactive dropdowns, human-readable English descriptions, and upcoming execution previews.

Format messy, unindented SQL statements into clean, structured queries with capitalized reserved keywords.

Convert between human-readable calendar dates and UNIX epoch timestamps in seconds and milliseconds with live clock.

Convert cURL command-line requests into clean JavaScript fetch, Axios, Python requests, and Node.js code snippets.

Convert YAML configuration files into JSON and transform JSON data into clean, formatted YAML with syntax validation.

Evaluate XPath 1.0/2.0 expressions against XML and HTML documents with matched node counts and attribute inspection.

Convert HTML <table> elements and copied spreadsheet tables into clean GitHub Flavored Markdown (GFM) tables.

Create high-resolution QR codes for websites, plain text, Wi-Fi logins, and contact cards.

Scan and decode QR codes from image files, drag & drop, paste from clipboard, or live camera stream.

Convert measurements instantly across Length, Area, Volume, Mass, Temperature, and Digital Storage.

Calculate exact age, days between dates, and add or subtract days, weeks, months, or years.

Generate standard Code 128, EAN-13, and UPC-A linear barcodes directly on canvas with PNG and SVG export.

Create and preview OpenGraph, Twitter Card, and Google Search meta tags with real-time visual social card previews.

Generate realistic mock test data (names, emails, phone numbers, addresses, jobs, and avatars) in JSON, CSV, or SQL formats.

Generate harmonized 5-color aesthetic palettes with spacebar randomization, color locking, and HEX/RGB/HSL export.

Validate credit card checksums using the Luhn MOD-10 algorithm, detect card issuer networks, and check formatting.

Pick random winners, make unbiased decisions, or spin an interactive colorful decision wheel from your custom choices list.

Generate comprehensive fictional user personas with realistic names, job titles, addresses, avatars, and bios for mockups.

Generate RFC 4122 compliant random UUID v4 and namespace-based SHA-1 UUID v5 identifiers in uppercase or lowercase.

Compare times across international cities (UTC, New York, London, Tokyo, Dubai), check business hour overlaps, and schedule meetings.

Calculate "X% of Y", "% increase or decrease between numbers", and find what percentage X is of Y with step-by-step formulas.

Calculate your exact age in years, months, weeks, days, hours, and seconds, plus next birthday countdown and zodiac sign.

Calculate total fuel cost, required fuel volume, cost per mile/km, and passenger split for road trips and commutes.

Create gorgeous linear, radial, and conic CSS gradients and glassmorphism cards with live preview and code export.

Design multi-layer box shadows and neumorphic soft UI effects with live preview and clean CSS snippet export.

Create trendy frosted-glass UI containers with customizable backdrop blur, surface transparency, and border reflections.

Calculate WCAG 2.1 color contrast ratios between text and background with real-time AA and AAA accessibility scoring.

Convert scalable vector SVG graphics into crisp raster PNG or JPG images at 1x, 2x, 4x, or custom resolution.

Create organic shapes, fluid blobs, and asymmetrical card corners using visual 8-point CSS border-radius sliders.

Learn and test CSS Flexbox with an interactive visual playground. Adjust direction, alignment, justification, gap, and child flex properties.

Create responsive CSS Grid layouts with visual columns, rows, fractional units (fr), gaps, and export clean CSS.

Design smooth CSS @keyframes animations with easing curves, duration, delay, iteration count, and live preview box.

Generate pure CSS border triangles, speech bubble pointers, and geometric arrows with custom directions and colors.

Create geometric shapes, circles, ellipses, triangles, stars, and polygons with interactive visual vertex handles and CSS clip-path export.

Fine-tune blur, brightness, contrast, drop-shadow, grayscale, hue-rotate, invert, opacity, saturate, and sepia CSS filters with real-time preview.

Design multi-layered text shadows, retro 3D typographic effects, vintage offsets, and vibrant cyberpunk neon glows with one-click CSS export.

Create custom CSS transition timing functions (ease-in-out, spring, bounce) by dragging Bezier control points with side-by-side animation comparison.

Design modern frosted-glass cards with adjustable glass tint, backdrop blur, border shine, specular highlight, and noise texture simulation.

Generate corner badge ribbons, folded product ribbons, and bookmark tags using pure CSS without images or SVGs.

Calculate monthly loan EMI, total interest payable, loan breakdown chart, and export full amortization schedule.

Project future investment growth and compounding returns with regular monthly contributions and visual growth charts.

Calculate promotional sales discounts, final checkout prices, tax amounts, and total savings in one instant view.

Convert hourly pay rates into daily, weekly, bi-weekly, monthly, and annual gross earnings with overtime calculation.

Calculate Return on Investment (ROI %), gross profit, net margin, and markup percentage from cost and revenue values.

Calculate restaurant tips, customize service percentage, round bill totals, and split costs evenly among friends.

Calculate inclusive and exclusive GST / VAT tax amounts, net prices, gross totals, and custom tax slabs.

Calculate cryptocurrency investment gains, losses, ROI percentage, exit values, and exchange trading fees.

Calculate home mortgage monthly payments, total interest costs, extra principal repayments, and amortization schedule.

Calculate the erosion of purchasing power over time, future cost of goods, and equivalent historic money value.

Calculate simple interest (P × R × T), final maturity amount, monthly payment, and interest earned for personal loans and fixed promissory notes.

Calculate monthly auto loan payments, trade-in equity, sales tax, total vehicle financing costs, and total interest paid over 36 to 84 months.

Plan your retirement target fund, future monthly pension income, and required monthly contributions based on age, investment returns, and inflation.

Calculate annual stock dividend yields, quarterly cash payouts, and project future passive income growth with Dividend Reinvestment (DRIP).

Calculate the break-even sales volume in units and revenue dollars from fixed operating costs, variable cost per unit, and selling price.

Calculate the exact months and total interest required to become debt-free by paying more than the minimum monthly credit card payment.

Generate cryptographically secure random passwords and readable passphrases with entropy and crack-time metrics.

Decode and inspect JSON Web Tokens locally in your browser. View formatted header, payload, and live expiration status.

Encrypt and password-protect any file locally in your browser using military-grade AES-GCM 256-bit encryption.

Inspect password entropy, detect repeated patterns and dictionary words, and estimate brute-force cracking resistance.

Compare two files or verify a downloaded file against an official SHA-256 or MD5 checksum to ensure software integrity.

Generate cryptographically random Hex, Base64, and URL-safe API keys, auth tokens, session secrets, and salt strings.

Hide confidential text messages inside PNG images using Least Significant Bit (LSB) pixel encoding, or extract hidden secrets.

Build hardened HTTP security headers (CSP, HSTS, X-Frame-Options, Permissions-Policy) for Nginx, Apache, and Cloudflare.

Generate Hash-based Message Authentication Codes (HMAC) with secret keys using SHA-256, SHA-384, SHA-512, or SHA-1.

Generate 2048-bit and 4096-bit RSA cryptographic key pairs in standard PKCS#8 and SPKI PEM format using the native browser Web Crypto API.

Compute Keccak-256 (Ethereum Web3) and NIST standard SHA3-224, SHA3-256, SHA3-384, and SHA3-512 cryptographic digests for text and hex inputs.

Encode and decode binary and text strings using Bitcoin and IPFS Base58 alphabet (excluding confusing characters 0, O, I, and l).

Generate RFC 6238 Two-Factor Authentication (2FA) Base32 secret keys, otpauth:// QR URIs, and verify live 30-second 6-digit rolling OTP codes.

Generate 12, 18, or 24-word cryptographically secure mnemonic seed phrases using the official BIP-39 English wordlist and Web Crypto CSPRNG.

Safely defang malicious URLs, domains, and IP addresses (e.g. hxxps[://]bad[.]site[.]com) to prevent accidental clicking in security reports.

Inspect and diagnose Cross-Origin Resource Sharing (CORS) configurations, wildcard origin vulnerabilities, and preflight headers.

Boost productivity with customized Pomodoro focus intervals, break timers, circular progress animation, and audio chimes.

Generate customizable dummy filler text by paragraphs, sentences, words, or lists with optional HTML tag wrapping.

Count events, attendance, repetitions, or inventory with multiple independent counters, keyboard shortcuts, and sound effects.

High-precision millisecond stopwatch with split lap tracking, fastest/slowest lap analysis, and CSV export.

Read long articles up to 3x faster using Rapid Serial Visual Presentation (RSVP) with adjustable Words-Per-Minute speed.

Build consistency by tracking daily habits and routines with a visual monthly heatmap grid, streak counters, and local persistence.

Record your entire desktop screen, application window, or browser tab with audio directly in your browser without software installs.

Record microphone audio memos, voice notes, and lectures with live frequency spectrum visualizer and instant audio playback.

Generate pure audio tones, sound frequencies (20Hz - 20kHz), musical pitch tuning notes, and binaural sound waves.

Create color-coded digital sticky notes, scratchpads, and quick reminders that persist automatically in your browser.

Organize tasks with interactive drag-and-drop To-Do, In-Progress, and Completed columns, priority tags, and 100% private local storage persistence.

Learn and practice Morse code with synthesized acoustic CW beeps, flash recognition, speed controls (WPM), and multiple-choice listening tests.

Generate customizable White Noise, Pink Noise, Brown Noise, and binaural Alpha brainwave frequencies for deep study, focus, and sleep.

Quickly draft clean daily standup updates (Yesterday, Today, Blockers) with custom bullet items and 1-click formatted Slack & Teams copying.

Calculate elapsed hours and minutes between start and end times, deduct unpaid lunch breaks, and compute gross earnings based on hourly wage.

Test your typing speed in real time with dynamic Words-Per-Minute (WPM), accuracy percentages, keystroke analysis, and live mistake highlighting.

Trim MP3, WAV, and OGG audio files with visual waveform selection, millisecond precision start/end markers, and instant local download.

Record crystal-clear voice and microphone audio directly in your browser with real-time audio visualizer waves, pause controls, and WAV/WebM export.

Speed up or slow down audio playback from 0.25x to 3.0x with optional semitone pitch shifting without uploading your recordings.

Amplify quiet audio files up to 300% gain, normalize peak amplitude to eliminate digital clipping, and download boosted audio locally.

Reverse audio sample buffers to listen to sounds backward, discover hidden reverse speech, and download backwards-reversed audio files.

Calculate song tempo (BPM) by tapping any key in rhythm, or practice music with a high-accuracy visual and audio metronome.

Synthesize pure Sine, Square, Triangle, and Sawtooth audio waves from 20 Hz to 20,000 Hz with live frequency sweep and volume controls.

Synthesize soothing White Noise, Pink Noise, Brown Noise, and gentle rain soundscapes to mask background distractions and enhance sleep.

Isolate Left and Right stereo audio channels, pan sound dynamically across stereo fields, or convert stereo tracks into balanced mono.

Combine multiple audio recordings and sound clips into a single continuous track with custom order and gapless playback.

Adjust sub-bass, bass, midrange, upper mids, and treble frequencies in real time with WAV export.

Render and export high-resolution audio waveform visualizer images in PNG and SVG formats.

Convert any browser-supported audio format (MP3, OGG, WebM, AAC, FLAC) into standard uncompressed WAV.

Synthesize custom binaural beat frequencies across Alpha, Beta, Theta, Delta, and Gamma states.

Convert English text into standard Morse code audio beeps with adjustable WPM speed, pitch, and WAV export.

Calculate uncompressed and compressed audio file sizes, streaming bandwidth, and duration limits.

Detect private LAN IP addresses, public IPv4/IPv6 addresses, and STUN candidate leaks directly through browser WebRTC.

Inspect CPU core concurrency, GPU WebGL renderer vendor, device memory RAM, display color gamut, and battery status.

Parse any browser User-Agent string into browser engine, operating system, device model, CPU architecture, and Client Hints.

Connect to any WebSocket or WSS server, send JSON and text payloads, view live connection states, and inspect timestamped message logs.

Measure real-time HTTP fetch latency, jitter, round-trip time (RTT), and packet response speed across global CDNs.

Simulate CORS preflight requests, check Access-Control headers, analyze cross-origin security rules, and generate fix instructions.

Calculate domain SSL certificate validity periods, expiration countdowns, renewal urgency, and security grace windows.

Search over 300+ standard TCP/UDP networking ports, services, RFC specifications, and security vulnerability recommendations.

Calculate precise transfer times for any file size across internet speeds from dial-up and 4G to gigabit fiber connections.

Parse, beautify, and inspect raw WHOIS text records and RDAP JSON responses with structured registrar, DNS, and date fields.

Calculate network address, broadcast address, netmask, usable host range, and wildcard mask from any CIDR.

Compress IPv6 addresses to standard RFC 5952 notation, expand to 32 hex digits, and generate reverse DNS.

Parse, validate, and format DNS record syntax for A, AAAA, CNAME, MX, TXT, SPF, DKIM, and DMARC.

Generate randomized unicast MAC addresses and format in colon, hyphen, dot, or raw hexadecimal notation.

Searchable encyclopedia of all HTTP status codes (1xx–5xx) with RFC definitions, caching rules, and debugging tips.

Convert complex cURL terminal commands into modern JavaScript fetch() and Python requests code snippets.

Calculate Body Mass Index (BMI), healthy weight ranges, prime index, and Ponderal Index in metric and imperial.

Calculate Basal Metabolic Rate and Total Daily Energy Expenditure using Mifflin-St Jeor and Katch-McArdle formulas.

Calculate daily protein, carbohydrate, and fat gram targets for cutting, maintenance, keto, and muscle building.

Estimate body fat percentage, fat-free mass, and lean muscle mass using the U.S. Navy circumference method.

Calculate your maximum one-rep lift across Brzycki, Epley, and Lombardi formulas with training percentage tables.

Calculate aerobic, anaerobic, fat-burning, and VO2 max cardiovascular training zones using the Karvonen formula.

Calculate running pace per kilometer or mile, kilometer splits, and projected finish times from 5K to full marathon.

Track 16:8, 18:6, and 20:4 fasting windows with real-time biological stages: ketosis, autophagy, and glycogen depletion.

Calculate optimal bedtime and wake-up times aligned with 90-minute REM sleep cycles to prevent morning sleep inertia.

Calculate daily calorie deficit, weekly fat loss rate, and projected goal achievement date.

Calculate Lean Body Mass (LBM) and Fat-Free Mass using the clinically validated Boer, James, and Hume formulas.

Interpret RMSSD Heart Rate Variability readings, assess autonomic recovery status, and log baseline trends.

Calculate Maximum Heart Rate using Tanaka, Gellish, and Fox formulas with 5 cardiovascular training zones.

Calculate your One-Rep Max (1RM) using Brzycki, Epley, and Lander formulas with a 1-to-12 rep loading chart.

Calculate Estimated Due Date (EDD), current gestational age, and trimester timeline using Naegele’s rule.

Estimate Blood Alcohol Concentration (BAC) and hours to reach 0.00% sobriety using the Widmark formula.

Build standardized Google Analytics tracking links with utm_source, utm_medium, utm_campaign, utm_term, and utm_content parameters.

Monitor character limits, hashtag counts, and line lengths for X (Twitter), LinkedIn, Instagram, Facebook, and Threads simultaneously.

Extract, deduplicate, sort, format, and generate clean hashtag lists from keywords or text paragraphs.

Generate SEO-compliant Open Graph (og:title, og:image) and Twitter Card tags with live social preview mockup cards.

Inspect image pixel dimensions against standard social formats: Instagram Square (1:1), Portrait (4:5), Stories (9:16), and YouTube Banners (16:9).

Calculate Return on Ad Spend (ROAS), Customer Acquisition Cost (CAC), Cost per Lead (CPL), and Break-Even conversion rates.

Audit email subject lines for character lengths, spam trigger words, preview snippet cutoffs, and open-rate psychological triggers.

Generate and test compelling action-oriented CTA buttons, headline hooks, and microcopy across 8 conversion categories.

Generate branded SVG/PNG QR codes for URLs, Wi-Fi logins, vCard digital business cards, and SMS with custom dot colors.

Determine how many sales and what conversion rate is required to break even on paid Google and Meta ad campaigns.

Count characters against the 280-char limit, weight URLs, and automatically split long text into numbered thread posts.

Check title and description character length AND pixel width (desktop 960px, mobile 600px) with Google SERP preview.

Add clean invisible paragraph line breaks to Instagram captions and organize hashtag blocks without messy periods.

Format bold, italic, and monospace Unicode text for LinkedIn posts and preview the "see more" cutoff line.

Calculate CTR percentage from impressions and clicks, and project required impressions for target traffic goals.

Convert and calculate between Cost Per Click (CPC), Cost Per Mille (CPM), CPA, and total advertising campaign spend.

Evaluate advanced mathematical expressions with trigonometry, logarithms, factorials, roots, and memory recall.

Calculate percentage increase, percentage decrease, relative difference, markups, and discounts with formula breakdowns.

Compute sample and population standard deviation, variance, mean, median, mode, IQR, and quartiles from raw datasets.

Solve quadratic equations ax² + bx + c = 0 with real and complex roots, discriminant analysis, and vertex coordinates.

Add, subtract, multiply, and simplify fractions with step-by-step common denominators and mixed number conversions.

Calculate determinants, matrix transpose, trace, scalar multiplication, and inverse matrices for 2x2 and 3x3 systems.

Solve any oblique or right triangle given SSS, SAS, ASA, or AAS using the Law of Sines and Law of Cosines.

Project investment growth with compounding frequencies, regular monthly contributions, and yearly schedule tables.

Instant geometric calculations for circles, spheres, cylinders, cones, pyramids, and cubes with formula breakdowns.

Decompose integers into prime factor trees and find Greatest Common Divisor (GCD) and Least Common Multiple (LCM).

Calculate arithmetic mean, median, mode, range, variance, standard deviation, and IQR with step-by-step solutions.

Calculate permutations nPr, combinations nCr, factorials n!, and Pascal's triangle rows with BigInt precision.

Simplify ratios (A:B), solve unknown proportions (A:B = C:X), and divide totals into multi-part ratios.

Convert between Binary, Hex, Octal, and Decimal with bitwise logic operators (AND, OR, XOR, NOT, bit shifts).

Calculate radius, diameter, circumference, area, surface area, and volume for 2D circles, cylinders, and spheres.

Solve a² + b² = c² to find missing legs, hypotenuse, angles (degrees/radians), perimeter, and area with canvas drawing.

Convert colors across HEX, RGB, HSL, HSV, and CMYK models with live color picker and CSS code snippets.

Audit foreground and background contrast compliance against WCAG 2.1 AA & AAA accessibility standards.

Generate color harmonies including complementary, analogous, triadic, split-complementary, and monochromatic schemes.

Extract dominant brand colors and cohesive 6-swatch palettes from any uploaded PNG, JPG, WebP, or SVG locally.

Design multi-stop linear and radial CSS gradients with visual angle wheel, color stops, and 1-click CSS code export.

Simulate red-green, blue-yellow, and complete color vision deficiencies on colors and images using matrix optics.

Generate 10 lighter tints and 10 darker shades for any base color to construct consistent design system ramps.

Blend two or more colors with custom percentage ratios in RGB space and inspect intermediate transition swatches.

Generate aesthetic 5-color palettes with individual swatch locking, spacebar regeneration, and CSS export.

Generate an entire 11-step Tailwind CSS color scale (50, 100, 200, ... 900, 950) from any brand color with config export.

Find the closest named CSS color (140+ colors) and nearest standardized color name using Delta E distance.

Generate harmonious monochromatic color palettes varying strictly in lightness and saturation from a base color.

Generate serene, harmonious analogous palettes from adjacent color wheel hues (±15°, ±30°, ±45°) with CSS export.

Generate vibrant triadic (120°) and tetradic (90° square & rectangle) color schemes with high-contrast UI swatches.

Convert digital screen sRGB colors to CMYK (Cyan, Magenta, Yellow, Key/Black) percentages for physical print design.

Convert and compare HSL (Hue, Saturation, Lightness) and HSV/HSB (Brightness) with visual 2D gradient sliders.

Transform basic instructions into high-performance prompts using CO-STAR, CRISPE, and Chain-of-Thought frameworks with automated guardrails.

Calculate accurate BPE token counts and compare API inference costs across GPT-4o, Claude 3.5 Sonnet, Gemini 1.5, DeepSeek, and Llama 3.

Construct high-detail visual image prompts for Midjourney v6.1 and Flux.1 with lighting, lenses, aspect ratios, stylize values, and negative parameters.

Build hardened system prompts for Custom GPTs, Claude Projects, Cursor rules, and autonomous AI agents with strict security guardrails.

Calculate exact GPU VRAM needed to run local LLMs (Llama 3, DeepSeek, Mistral) based on parameter count, quantization, context length, and KV cache.

Visually inspect text splitting, token chunk sizes, and sliding window overlaps for high-accuracy RAG vector database ingestion.

Audit prompts for unverified assumptions, missing rejection boundaries, and ambiguous constraints that trigger model hallucinations.

Format demonstration pairs into production Few-Shot templates: OpenAI ChatML, Claude XML, Alpaca, or plain demonstration text.

Simulate how Temperature, Top-P (nucleus), and Top-K alter next-token probability distributions, creativity, and deterministic reasoning.

Audit inputs for prompt injection attack vectors, delimiter escapes, DAN roleplay overrides, and leaked system credentials.

Visually build strict OpenAI tools schemas, Anthropic function definitions, and Python Pydantic models for reliable structured LLM outputs.

Create deep, multi-layered roleplay personas, NPC dialogue guidelines, and brand chatbot characters with built-in dialogue simulation.

Audit text for dead-giveaway AI clichés ("delve", "testament", "tapestry"), measure sentence burstiness, and rewrite with natural human cadence.

Package messy source code, error traces, and architectural constraints into clean prompts optimized for Claude 3.5 Sonnet and GPT-4o.

Calculate Cosine Similarity, Dot Product, Euclidean (L2), and Manhattan distance between embedding vectors with visual angle display.

Visualize token window limits and capacity across GPT-4o, Claude 3.5, Gemini 1.5, and Llama 3.

Trim videos and convert clips directly to high-quality animated GIFs with customizable FPS, resolution, and loop settings in-browser.

Step through video clips frame-by-frame, capture exact uncompressed high-resolution PNG/JPG stills, or batch extract image sequences.

Record full screen, specific app windows, or browser tabs with synchronized microphone audio, webcam overlay, and instant WebM export.

Reframe and resize videos into 9:16 (Reels/TikTok/Shorts), 1:1 (Square), 4:5 (Feeds), or 16:9 with blurred background padding.

Strip unwanted audio tracks, background noise, or copyrighted music from video files completely in-browser without re-uploading.

Convert seamlessly between SubRip (.srt) and WebVTT (.vtt) subtitle files, shift timestamps with millisecond accuracy, and clean cues.

Extract audio tracks from MP4, WebM, or MOV videos into high-quality WAV audio completely offline.

Adjust video playback speed from 0.25x slow motion to 4x timelapse speed in browser.

Time-shift subtitle cues by milliseconds to fix out-of-sync audio and convert SRT to VTT.

Reverse short video clips to play backwards for artistic effects and social media.

Convert 16:9 horizontal videos into 9:16 vertical reels with blurred background reflection.

Downscale 4K and 1080p videos to 720p or 480p to drastically reduce file sizes.

Trim start and end points of MP4 and WebM videos with frame-accurate preview and local re-encoding.

Overlay copyright text or PNG logo watermark onto videos with custom opacity and positioning.

Remove green or blue screen background from video clips and replace with custom color or backdrop image.

Step through videos frame-by-frame (1/30s or 1/60s) with millisecond precision and full-res frame export.

Convert mouse sensitivity between Valorant, CS2, Overwatch 2, Apex Legends, Fortnite, and Call of Duty with exact cm/360° matching.

Benchmark your mouse clicking speed across 1s, 5s, 10s, 30s, and 60s intervals with butterfly, jitter, and drag click analytics.

Interactive visual mechanical keyboard tester to verify N-Key Rollover (NKRO), detect ghosting or key chattering, and measure debounce latency.

Test visual reaction time (ms) and target acquisition accuracy with interactive color changes and dynamic moving aim targets.

Detect and verify your monitor's true hardware refresh rate (60Hz, 120Hz, 144Hz, 165Hz, 240Hz, 360Hz) with real-time frame pacing graphs.

Calculate and convert Horizontal (H-FOV), Vertical (V-FOV), and 4:3 Base FOV across 16:9, 21:9 Ultrawide, and 32:9 Super Ultrawide monitors.

Design custom FPS crosshairs with color, thickness, gap, and dot, and export transparent PNG.

Calculate effective DPI (eDPI) and match sensitivity across CS2, Valorant, Apex, and Overwatch.

Match Horizontal and Vertical FOV angles across 16:9, 21:9 ultrawide, and 4:3 aspect ratios.

Interactive 360-degree binaural soundstage radar to benchmark gaming headset directional positioning.

Test mechanical keyboard switches for switch chatter, key bounce, and double-press defects.

Calculate cumulative probabilities for gacha pulls, MMO item drops, and run simulated roll streaks.

Test your Clicks Per Second (CPS) with 1s, 5s, 10s, and 30s timers, real-time CPS graph, and jitter rank.

Interactive canvas target shooting grid to train mouse precision, flick reaction times, and accuracy percentages.

Measure your visual reaction time in milliseconds with randomized red-to-green stimulus and percentile ranking.

Multi-lane UFO animation test to evaluate monitor response time, pixel ghosting, overdrive overshoot, and frame skips.

Calculate semester, term, and cumulative GPA on 4.0 and 5.0 weighted grading scales with dynamic credit hour inputs.

Generate formatted bibliography references and in-text citations for books, websites, and journal articles in APA 7th, MLA 9th, and Chicago styles.

Analyze academic essays and thesis drafts with word count, reading time, and Flesch-Kincaid grade level readability index.

Apply flat-point, square root, and linear curves to test scores with instant distribution statistics and grade boundary breakdown.

Generate a comprehensive, GDPR and CCPA compliant privacy policy for websites, SaaS applications, and mobile apps 100% locally.

Create tailored website terms of service and user agreements specifying liability limits, governing jurisdiction, and acceptable usage.

Draft clean, professional commercial invoices with custom hourly rates, project line items, tax deductions, and printable PDF styling.

Draft legally structured mutual or unilateral non-disclosure agreements with custom governing state laws and confidentiality timeframes.

Deduplicate rows, trim whitespace, normalize headers, remove empty cells, and standardize delimiters in raw CSV datasets.

Flatten deeply nested, hierarchical JSON arrays into rectangular CSV rows with dot-notation column headers for Excel analysis.

Detect anomalous data points and anomalies in numerical distributions using Interquartile Range (IQR) fences and Standard Z-Scores.

Compute mean, median, mode, sample variance, standard deviation, skewness, quartiles, and summary distribution metrics.