Privacy by default
Files never leave your device. No cookies and no fingerprinting; the only analytics are anonymous page counts from Cloudflare. The tools work offline — and that is the point.
Quiet tools for
the noisy web.
A small, careful collection of free utilities — no signup, no cookies, no upload. Everything runs in your browser.
Nothing you type is sent to a server.
★ · My tools
§ 01 · Index
The complete collection.
Regex Tester
Test regular expressions in real time with match highlighting, capture groups, and common pattern templates.
Developer
URL Encoder & Decoder
Encode or decode full URLs and URL components instantly.
Developer
Word Counter
Count words, characters and sentences. Check reading time and social media limits.
Text
Screen Resolution Checker
Check screen resolution, viewport size, DPR, browser, OS, and display preferences instantly.
Device
Password Generator
Generate strong, secure passwords. Customize length, characters, and strength.
Security
QR Code Generator
Generate QR codes from text or URLs. Download as PNG or SVG.
Images
Color Picker & Converter
Pick colors visually. Convert between HEX, RGB, HSL, HSV, CMYK.
Design
Image Compressor
Compress JPEG, PNG, WebP images. Reduce file size up to 90% in your browser.
Images
JSON Formatter
Format, validate, and explore JSON with syntax highlighting and tree view.
Developer
Diff Checker
Compare two texts side by side and highlight additions, removals, and changes.
Text
Typing Speed Test
Test your WPM and accuracy. Multiple modes: words, sentences, code, numbers.
Device
Age Calculator
Calculate exact age, birthday countdown, zodiac, generation, and fun life stats.
Numbers
Stopwatch & Timer
Track time with a precise stopwatch, lap exports, and a countdown timer with alerts.
Time
Percentage Calculator
Calculate percentages, percentage change, increases, decreases, and tips instantly.
Numbers
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes from text or files.
Security
Base64 Encoder & Decoder
Encode and decode Base64 for text or files with URL-safe and line-break options.
Developer
Lorem Ipsum Generator
Generate placeholder text by paragraphs, sentences, or words. Free, instant, and easy to copy.
Text
Unit Converter
Convert length, weight, temperature, area, volume, and speed instantly.
Numbers
Loan & Mortgage Calculator
Calculate loan and mortgage payments, total interest, repayment, and payoff estimates.
Numbers
BMI Calculator
Calculate your body mass index, see your BMI category, and check a general healthy weight range.
Numbers
CSS Gradient Generator
Create beautiful linear and radial CSS gradients visually and copy the generated CSS.
Design
CSS Box Shadow Generator
Design CSS box shadows visually with live preview and multiple shadow layers. Copy the generated box-shadow CSS instantly. Free, private, no upload.
Design
Color Palette Generator
Generate color palettes with complementary, analogous, triadic and monochromatic harmony. Lock, copy, and export colors. Free, private, no upload.
Design
Markdown Previewer
Write Markdown and preview the formatted HTML result instantly. Safe, private, and fast.
Developer
Favicon Generator
Create favicon files from one image for websites, browser tabs, and bookmarks.
Images
CSV to JSON Converter
Convert CSV data into formatted JSON instantly.
Developer
Meeting Cost Calculator
Estimate how much a meeting costs based on attendees, hourly rates, duration, and overhead.
Numbers
Color Contrast Checker
Test color contrast ratios against WCAG 2.1 AA and AAA standards. Check text readability and accessibility compliance.
Design
Unix Timestamp Converter
Convert Unix timestamps to dates and dates to epoch time. Supports seconds, milliseconds, and timezones.
Developer
Cron Expression Parser
Parse and build cron expressions. See human-readable descriptions and next execution times.
Developer
JWT Decoder
Decode JWT tokens client-side. Inspect Header, Payload, and Signature with smart claims analysis.
Developer
Webcam & Mic Test
Test your webcam and microphone in your browser. Check video quality and audio levels before calls.
Device
Text Case Converter
Convert text between uppercase, lowercase, title case, camelCase, snake_case, kebab-case, and more.
Text
Date Difference Calculator
Calculate the exact number of days, weeks, months, and years between any two dates. Business days, countdown, and detailed breakdown.
Numbers
Image Resizer & Cropper
Resize, crop, rotate, and convert images in your browser. No upload, 100% private.
Images
IP Address Lookup
Find your public IP address and geolocation instantly. Look up any IP for country, city, ISP, timezone, and ASN data. Free, no sign-up required.
Security
UUID Generator
Generate single or bulk UUIDs instantly. Choose version, format, and copy with one click.
Developer
Pomodoro Timer
Stay focused with timed work sessions and breaks
Time
Image Format Converter
Convert images between PNG, JPG, WebP, GIF, BMP, AVIF, and ICO — free, private, 100% in-browser
Images
Screen Test
Test your display for dead pixels, stuck pixels, backlight bleed, color banding, and more.
Device
Photo Censor
Blur, pixelate, or redact sensitive areas in your photos. 100% private — nothing leaves your browser.
Images
EXIF Metadata Remover
Inspect and remove hidden GPS, camera, date, and author data from your photos.
Images
Image Color Extractor
Upload an image to extract its dominant colors and create a color palette instantly.
Images
Number Base Converter
Convert between binary, decimal, hexadecimal, and octal instantly with live updates and bit visualization.
Developer
Compound Interest Calculator
See how your money grows over time with the power of compounding.
Numbers
Discount & Markup Calculator
Calculate sale prices, markups, profit margins, and original prices instantly. Free pricing calculator for shoppers and businesses.
Numbers
PDF Delete Pages
Delete pages from a PDF in your browser. Click pages to mark them, then download a clean copy. 100% private — no upload, no signup.
Converters
Merge PDF Files
Combine multiple PDFs into one document — free, private, no upload required.
Converters
PDF Organize
Reorder, rotate, and remove PDF pages by drag-and-drop — free and private.
Converters
PDF Page Numbers
Add page numbers to any PDF — choose position, format and font size. Free, private, runs in your browser.
Converters
Tip Calculator
Calculate tips and split bills instantly. Free online tip calculator with custom percentages, bill splitting, and round-up.
Numbers
PDF to Image Converter
Convert each PDF page to an image — free, private, no upload required.
Converters
Image to PDF Converter
Convert and combine images into a PDF document. Arrange pages, set margins, and download instantly.
Converters
PDF Page Rotator
Rotate individual or all pages in a PDF file. Free, private, and lossless — runs entirely in your browser.
Converters
PDF Split
Split a PDF into separate pages or specific page ranges — free, private, runs in your browser.
Converters
Placeholder Image Generator
Create custom placeholder images for mockups, wireframes, and prototypes. Set dimensions, colors, and text, then download as PNG, JPG, WebP, or SVG.
Images
PDF Watermark
Add a text or image watermark to any PDF — works entirely in your browser.
Converters
PDF Compress
Reduce PDF file size instantly in your browser. Nothing is uploaded to any server.
Converters
Audio Trimmer
Trim and cut audio files in your browser. Supports MP3, WAV, OGG, M4A, and FLAC. No upload — 100% private.
Device
Video to GIF
Convert video clips to animated GIFs right in your browser. No uploads, no sign-up, 100% private.
Converters
SVG Optimizer
Minify and clean up SVG files in your browser. Free, private, no upload.
Developer
Meta Tag Generator
Generate complete SEO meta tags, Open Graph, and Twitter Card markup with live previews for Google, Facebook, and Twitter. Free, private, no signup.
Developer
robots.txt Generator
Generate a valid robots.txt file with presets for WordPress, Shopify, AI crawler blocks and more. Live preview, copy and download.
Developer
HEIC to JPG Converter
Free HEIC to JPG converter that runs entirely in your browser. Batch convert iPhone HEIC photos to JPG, PNG, or WebP. No uploads, no signup, fully private.
Converters
.htaccess Generator
Generate Apache .htaccess rules for redirects, caching, security headers, compression, and more. Free, private, browser-based.
Developer
Schema Markup Generator
Generate valid Schema.org JSON-LD structured data for FAQ, Organization, Product, Article, Event and more. Free and private.
Developer
Aspect Ratio Calculator
Find and simplify the aspect ratio of any width and height, then resize while keeping the same proportions.
Design
Barcode Generator
Generate CODE128, EAN-13, UPC-A, CODE39 and more. Download as PNG or SVG.
Images
Timezone Converter
Convert and compare times across multiple time zones and cities instantly.
Time
Image Watermark Tool
Add a text or logo watermark to your photos. Control opacity, position, rotation, and tiling, then download PNG or JPEG.
Images
Signature Generator
Draw, type, or upload a signature and download it as a transparent or white-background PNG for email sign-offs, documents, and letterheads.
Images
Passport Photo Maker
Crop your photo to official passport and visa photo sizes (US, UK, Schengen, India, Canada, China, Australia) and download a single photo or a print-ready sheet with multiple copies.
Images
Currency Converter
Convert between 30+ world currencies with live, daily-updated exchange rates. Free and instant.
Numbers
QR Code Scanner
Scan and decode QR codes from an uploaded image or your camera. Reads URLs, WiFi, contacts, and text.
Images
Text to Speech Reader
Convert any text into natural spoken audio in your browser. Choose a voice, adjust speed and pitch, and follow along with live word highlighting.
Text
Speech to Text Converter
Convert speech to text instantly using your microphone. Live transcription, multiple languages, copy or download as .txt.
Text
PDF to Text Converter
Extract selectable text from any PDF in your browser. Copy it or download as .txt — free, private, no upload required.
Converters
Event Countdown Timer
Create a live countdown to any date or event. Add multiple countdowns, share a link, and get notified the moment it hits zero.
Time
Invoice Generator
Create a professional PDF invoice in your browser. Add your logo, line items, tax and discounts, and download instantly — free, private, no sign-up.
Numbers
Random Picker Wheel
Spin a wheel to randomly pick a name, decision, or raffle winner. Add your own list, customize the odds, and spin — free, private, no upload.
Text
Random Number Generator
Generate random integers or decimals in any range, unique or with duplicates. Cryptographically secure, free, private, no upload.
Numbers
Morse Code Translator
Translate text to Morse code and Morse code back to text instantly. Play it as audio, adjust the speed, and copy or download the result.
Text
Voice Recorder
Record audio from your microphone in your browser. Pause, resume, preview, and download as WAV. Free, private, no upload.
Device
Image to Base64 Converter
Convert images to Base64 strings or decode Base64 back into images, right in your browser. Free, private, no upload.
Developer
PDF Sign
Draw, type, or upload a signature and place it anywhere on a PDF, entirely in your browser. Free, private, no upload required.
Converters
JSON to CSV Converter
Convert JSON arrays or objects into CSV instantly in your browser. Custom delimiters, header rows, and nested object flattening. Free, private, no upload.
Developer
Mock Data Generator
Build a custom schema and generate realistic fake data — names, emails, addresses, and more. Export as JSON or CSV instantly. Free, private, no upload.
Developer
Credit Card Validator
Check any card number with the Luhn algorithm, detect the card network, and generate valid test numbers. Free, private, no upload.
Security
Text Encryptor & Decryptor
Encrypt and decrypt text with AES-256-GCM directly in your browser. Password-protected, no upload, no account.
Security
Excel to CSV Converter
Convert Excel to CSV and CSV to Excel directly in your browser. Multi-sheet support, custom delimiters, live preview. Free, private, no upload.
Developer
YAML to JSON Converter
Convert YAML to JSON and JSON to YAML instantly in your browser. Validates syntax, adjustable indentation, copy or download. Free, private, no upload.
Developer
Word Cloud Generator
Turn any text into a visual word cloud in your browser. Customize colors, shape, and size, then download as PNG. Free, private, no upload.
Text
GPA Calculator
Calculate your GPA from courses, credit hours, and letter grades. Free, private, and instant.
Numbers
Coin Flip Simulator
Flip a virtual coin online instantly. Track heads, tails, streaks, and flip history, or flip up to 1000 coins at once.
Numbers
Barcode Scanner
Scan and decode barcodes from an uploaded image or your camera. Reads EAN, UPC, Code 128, Code 39, and more.
Images
Text Sorter
Sort lines of text alphabetically, by length, numerically, or randomly. Remove duplicates and blank lines instantly in your browser. Free, private, no upload.
Text
XML Formatter & Validator
Format, validate, and minify XML online. Detects syntax errors with line and column numbers, adjustable indentation. Free, private, no upload.
Developer
JSON to XML Converter
Convert JSON to XML and XML to JSON instantly in your browser. Validates syntax, custom root/item names, attribute handling. Free, private, no upload.
Developer
IBAN Validator
Validate any IBAN with the mod-97 checksum, see its country and structure breakdown, and generate valid test IBANs. Free, private, no upload.
Security
Password Strength Checker
Check how strong your password is with real entropy math and pattern detection for common passwords, keyboard runs, and repeats. Free, private, no upload.
Security
Calorie Calculator
Calculate your BMR, TDEE, and daily calorie needs from age, height, weight, and activity level. Free, private, no upload.
Numbers
Subnet Calculator
Calculate network address, broadcast address, usable host range, and subnet mask from any IPv4 address and CIDR prefix. Free, private, no upload.
Developer
Meme Generator
Add bold top and bottom caption text to any photo and download your meme. Free, private, no upload.
Images
Color Blindness Simulator
See how any photo looks with protanopia, deuteranopia, tritanopia, or monochromacy. Free, private, no upload.
Design
Text to Binary Converter
Convert text to binary, hexadecimal, or decimal code and back to text instantly in your browser. Free, private, no upload.
Developer
HTML Entity Encoder & Decoder
Convert text to HTML entities or decode entities back to text instantly in your browser. Free, private, no upload.
Developer
XML Sitemap Generator
Generate a valid XML sitemap.xml from a list of URLs in seconds. Set lastmod, change frequency and priority, then copy or download. Free and private.
Developer
Running Pace Calculator
Calculate running pace, finish time, or distance covered. Get pace per km/mile, average speed, a race time predictor, and splits. Free, private, no upload.
Numbers
DNS Lookup Tool
Look up DNS records for any domain — A, AAAA, CNAME, MX, TXT, NS, SOA and CAA. Free, instant, no sign-up required.
Developer
Sales Tax & VAT Calculator
Add or remove sales tax and VAT from any price instantly. Quick-rate presets for UK, EU, US and Japan. Free, private, no sign-up.
Numbers
Roman Numeral Converter
Convert numbers to Roman numerals and back instantly, with a full reference chart, subtractive-notation rules, and strict validation. Free, private.
Numbers
Screenshot Beautifier
Add a color or gradient background, padding, rounded corners, a drop shadow, and a browser frame to any screenshot, then export PNG or JPEG.
Images
Dice Roller
Roll virtual dice online free. Pick d4, d6, d8, d10, d12, d20, d100, or a custom side count, roll up to 20 dice, and see the running total instantly.
Numbers
Metronome
Free online metronome with tap tempo, adjustable time signatures, and accented beats. Sample-accurate Web Audio API timing for practice sessions.
Time
Final Grade Calculator
Calculate your weighted course grade from category scores, or find the score you need on your final exam. Free, private, and instant.
Numbers
CSS Minifier & Beautifier
Minify or beautify CSS instantly in your browser. Strip comments, collapse whitespace, shorten hex colors. Free, private, no upload.
Developer
Screen Recorder
Record your screen, a window, or a browser tab in your browser. Add mic audio, pause/resume, then download as video. Free, private, no upload.
Device
Audio to WAV Converter
Convert MP3, OGG, M4A, AAC, FLAC and more to WAV in your browser. Choose sample rate, channels, and bit depth. Free, private, no upload.
Converters
CSS Clamp Calculator
Generate fluid CSS clamp() values for font-size, spacing, and more. Live scaling preview, rem or px, one-click copy. Free, private, no upload.
Design
URL Slug Generator
Convert any text into a clean, SEO-friendly URL slug. Choose hyphens or underscores, strip accents, and set a max length — instantly in your browser.
Developer
CSS Border Radius Generator
Design CSS border-radius values visually with individual corner control and live preview. Copy the generated CSS instantly. Free, private, no upload.
Design
CSS Grid Generator
Design CSS Grid layouts visually — columns, rows, gap, alignment, or a responsive auto-fit grid. Copy the CSS instantly. Free, private, no upload.
Design
Body Fat Calculator
Estimate body fat percentage using the U.S. Navy circumference method. Get your category, fat mass, and lean mass instantly. Free, private, no upload.
Numbers
Statistics Calculator
Calculate mean, median, mode, range, variance, and standard deviation from a list of numbers. Switch between sample and population formulas. Free, private, no upload.
Numbers
CSS Flexbox Generator
Design CSS Flexbox layouts visually — direction, wrap, justify-content, align-items, gap. Copy the CSS instantly. Free, private, no upload.
Design
HTML Minifier & Beautifier
Minify or beautify HTML instantly in your browser. Strip comments, collapse whitespace, keep scripts and styles intact. Free, private, no upload.
Developer
SQL Formatter & Minifier
Format, beautify, and minify SQL queries online across 10 dialects: MySQL, PostgreSQL, SQL Server, Oracle, and more. Free, private, no upload.
Developer
CSS Animation Generator
Design CSS @keyframes animations visually — pick a preset, tune duration, easing, delay, and direction. Copy the CSS instantly. Free, private, no upload.
Design
Keyword Density Checker
Analyze keyword density and word frequency in any text. Spot overused words, check SEO keyword percentages, and find repeated phrases. Free, private, no upload.
Text
Sleep Calculator
Find the best bedtime or wake-up time based on 90-minute sleep cycles. Free, private sleep cycle calculator — no upload, no signup.
Time
Pregnancy Due Date Calculator
Estimate your due date from your last period, conception, or IVF transfer date. See gestational age, trimester, and days to go. Free, private, no upload.
Numbers
GIF Maker
Combine multiple photos into a smooth animated GIF in your browser. Control speed, size, loop count, and add a boomerang effect. Free, no upload.
Images
Fraction Calculator
Add, subtract, multiply, or divide fractions and mixed numbers instantly. Get simplified, mixed number, and decimal results. Free, private, no upload.
Numbers
Ratio Calculator
Simplify a ratio to its lowest terms, solve a proportion for a missing value, or scale a ratio to a target total. Free, private, no upload.
Numbers
Salary Calculator
Convert pay between hourly, daily, weekly, bi-weekly, semi-monthly, monthly, and annual amounts. Free, private, no upload.
Numbers
TOTP Code Generator
Generate live TOTP codes and verify 2FA secrets in your browser. Supports SHA-1/256/512, 6 or 8 digits, and QR codes for any authenticator app. Free, private.
Security
JSON Diff Checker
Compare two JSON documents and see exactly what was added, removed, or changed, path by path. Free, private, no upload.
Developer
Digital Storage Converter
Convert bits, bytes, KB, MB, GB, TB, and PB — decimal (SI) and binary (IEC) — plus Mbps to MB/s. Free, private, no upload.
Developer
Readability Score Checker
Check the readability of any text with Flesch Reading Ease and Flesch-Kincaid Grade Level scores. Free, private, no upload.
Text
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§ 02 · Manifesto
Three quiet rules.
Quiet by design
No popups, no upsells, no flashing banners. Each tool does one thing, with the smallest possible interface, and gets out of your way.
Free forever
No accounts, no paid tiers, no rate limits. Funded by goodwill alone.