The toolbox
All Pageonaut tools
Every tool in one place — free, no sign-up, and most run entirely in your browser. Search or filter by category to find the right one in seconds.
Showing all 101 tools
Case Converter
Convert text to UPPERCASE, lowercase, Title Case or Sentence case — instantly, in your browser.
Text & WritingWord & Character Counter
Count words, characters, sentences, paragraphs and reading time as you type.
Text & WritingReaction Time Test
Test your reflexes — click the moment it turns green, beat your best time and challenge a friend.
Tests & TrainerPassword Generator
Generate strong, random passwords right in your browser — your passwords never leave your device.
GeneratorsImage Compressor
Compress JPEG and WebP images right in your browser — smaller files, no upload, no quality guesswork.
ImageColor Converter
Convert any color between HEX, RGB and HSL instantly — pick, preview and copy in one place.
ColorMerge PDF
Combine several PDF files into one document — fast, private and entirely in your browser.
PDFUnit Converter
Convert length, weight, temperature and data units instantly — right in your browser.
ConvertersJSON Formatter
Format, beautify and minify JSON with instant validation — all in your browser.
DeveloperUTM Builder
Build tagged campaign URLs with UTM parameters for accurate analytics tracking.
SEO & WebPercentage Calculator
Work out percentages three ways — find a percent of a value, what percent one number is of another, or the percent change between two numbers.
CalculatorsYouTube Thumbnail Downloader
Paste any YouTube link or video ID to preview and grab its thumbnail in every available resolution.
Social MediaTyping Speed Test
Measure your typing speed in WPM and accuracy over 15, 30 or 60 seconds — then beat your best score.
Tests & TrainerClick Speed Test (CPS)
Find out how many clicks per second you can hit over 1, 5 or 10 seconds — then beat your best CPS.
Tests & TrainerKeyboard Tester
Press every key to check it registers — spot stuck, dead or ghosting keys on any keyboard, right in your browser.
Tests & TrainerNumber Memory Test
Memorise a number that grows one digit each round — see how many digits you can hold and beat your best level.
Tests & TrainerTone Generator
Play a precise pure tone at any frequency — test speakers, hearing and tuning, right in your browser.
GeneratorsBase64 Encoder / Decoder
Encode text to Base64 or decode it back — instantly and privately in your browser.
DeveloperColor Contrast Checker
Check text-vs-background contrast against WCAG AA & AAA — with a live preview.
ColorAge Calculator
Work out your exact age in years, months and days — plus days to your next birthday.
CalculatorsUnix Timestamp Converter
Convert Unix timestamps to human dates and back — local time and UTC, in your browser.
ConvertersSlug Generator
Turn any title into a clean, URL-friendly slug — lowercase, hyphenated, accent-safe.
SEO & WebSocial Media Character Counter
Count characters and words against X, Instagram, LinkedIn, TikTok and SEO limits live.
Social MediaImage Resizer
Resize JPEG, PNG or WebP images to exact pixel dimensions — fast, private and right in your browser.
ImageImages to PDF
Combine JPG and PNG images into a single PDF — one image per page, built privately in your browser.
PDFURL Encoder / Decoder
Encode or decode URLs and query components instantly and privately in your browser.
DeveloperHash Generator
Generate SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text — privately in your browser.
DeveloperLorem Ipsum Generator
Generate placeholder text by paragraphs, sentences or words — instantly, free and right in your browser.
Text & WritingRemove Duplicate Lines
Delete duplicate lines from any list or text, with trim, case and sort options — instantly in your browser.
Text & WritingBMI Calculator
Calculate your Body Mass Index from height and weight in metric or imperial units, with an instant category and scale.
CalculatorsCSS Gradient Generator
Build linear and radial CSS gradients with two colour stops, an angle slider and a live preview — then copy the code.
ColorMeta Tag Generator
Generate SEO, Open Graph and Twitter card meta tags for your page's <head>, ready to copy.
SEO & WebNumber Base Converter
Convert integers between binary, octal, decimal and hexadecimal with live, error-checked fields.
ConvertersImage Color Palette Extractor
Pull the dominant color palette out of any image — right in your browser.
ColorQR Code Generator
Turn any link or text into a QR code — customise the colors and download a crisp PNG.
GeneratorsJWT Decoder
Decode and inspect JWT header, payload and expiry — entirely in your browser.
DeveloperCron Expression Builder
Build and understand cron schedules in plain English, with the next run times.
DeveloperUUID Generator
Generate UUID v4, v7 and ULID identifiers in bulk — instantly and locally.
DeveloperJSON ↔ YAML Converter
Convert between JSON and YAML in your browser — nothing is uploaded.
ConvertersRobots.txt Generator
Build a correct robots.txt with allow/deny rules, sitemap and AI-bot presets.
SEO & WebSERP Snippet Preview
Preview your Google title and description with pixel-accurate truncation.
SEO & WebTip Calculator
Work out the tip and split the bill per person in seconds — presets, custom percentages and round-up included.
CalculatorsDiscount Calculator
Find the final price after a discount — or the original price before it — with support for stacked discounts.
CalculatorsVAT / Sales Tax Calculator
Add or remove VAT / sales tax from any price, with the tax amount shown separately and common rate presets.
CalculatorsCountdown to Date
Count down the days, hours and minutes to any date — and share the link.
CalculatorsDate Difference Calculator
Count the days, weeks and months between two dates.
CalculatorsCSS Box-Shadow Generator
Design layered box-shadows visually and copy the CSS.
ColorGlassmorphism Generator
Create frosted-glass cards with live preview and copy-ready CSS.
ColorReadability Checker
Score your writing with Flesch Reading Ease and grade level — as you type.
Text & WritingFancy Text Generator
Turn plain text into bold, italic, cursive and more for social bios.
Text & WritingEXIF Metadata Remover
Strip GPS location and camera metadata from photos before you share them — entirely in your browser.
ImagePassphrase Generator
Generate memorable, strong passphrases from random words — created locally in your browser.
GeneratorsColor Palette Generator
Generate beautiful color palettes — press space, lock the ones you like, share the link.
ColorColor Shades & Tints Generator
Turn one color into a full 50–950 tint and shade scale, ready for Tailwind.
ColorColor Blindness Simulator
Preview how your colors and images look to color-blind viewers — all in your browser.
ColorText Diff Checker
Compare two texts and see exactly what changed — line by line or word by word.
DeveloperJSON ↔ CSV Converter
Convert JSON to CSV and back — handles nested objects, runs in your browser.
ConvertersJSON to TypeScript
Generate TypeScript interfaces from any JSON — instantly and locally.
DeveloperRegex Tester
Test regular expressions live, highlight every match, and understand what they do.
DeveloperSQL Formatter
Beautify and format messy SQL queries — across dialects, in your browser.
DeveloperMarkdown Editor
Write Markdown with a live preview and export clean HTML.
DeveloperImage Converter
Convert PNG, JPG, WebP and AVIF in your browser — batch, no upload, no file limit.
ImageHEIC to JPG Converter
Convert iPhone HEIC photos to JPG or PNG — locally, nothing uploaded.
ImageFavicon Generator
Turn any image, emoji or text into a complete favicon set — with a live tab preview and copy-paste HTML.
ImageSchema Markup Generator
Build valid JSON-LD structured data for rich results — no code required.
SEO & WebOpen Graph Preview
Preview how your link looks on Facebook, X, LinkedIn and Discord — and get the meta tags.
Social MediaLoan & Mortgage Calculator
Work out monthly payments and see the full amortization schedule — with optional extra payments to find out how much interest you can save.
CalculatorsCompound Interest Calculator
See how your savings grow with compound interest over time — add regular contributions and watch the year-by-year breakdown build up.
CalculatorsTDEE Calculator
Estimate your daily calorie needs from your BMR and activity level, with targets for cutting, maintaining or bulking.
CalculatorsSocial Media Image Resizer
Resize and crop images to the exact size for every social platform — Instagram, TikTok, YouTube and more.
ImageTime Zone Meeting Planner
Find a meeting time that works across multiple time zones — a color-coded overlap grid for remote teams.
ConvertersSplit PDF
Extract page ranges or split a PDF into separate files — locally, no upload.
PDFRotate PDF
Rotate PDF pages 90, 180 or 270 degrees — every page or just some.
PDFCrop PDF
Trim the margins of a PDF — all in your browser.
PDFOrganize PDF Pages
Reorder, rotate and delete PDF pages by dragging thumbnails — no upload.
PDFPDF to Images
Convert every PDF page to a PNG or JPG image — locally, unlimited pages.
PDFAdd Page Numbers to PDF
Stamp page numbers onto a PDF — position, format and font size, all local.
PDFWatermark PDF
Add a text watermark to every page of a PDF — in your browser, no upload.
PDFExtract Text from PDF
Pull the text out of a PDF to copy or download — locally, no upload.
PDFRemove PDF Metadata
Strip author, software and hidden metadata from a PDF before sharing.
PDFBackground Remover
Remove the background from any image at full resolution — free, no login, processed entirely on your device.
ImageFake Data Generator
Generate realistic test data as CSV, JSON or SQL — unlimited rows, all local.
GeneratorsBarcode Generator
Create EAN, UPC, Code 128 and Code 39 barcodes — download SVG or PNG, no watermark.
GeneratorsSVG Background Generator
Generate organic blobs, mesh gradients and wave backgrounds as copy-ready SVG.
ColorNamed Color Finder
Find the closest CSS color name for any HEX, RGB or HSL value.
ColorTailwind Theme Generator
Generate a full Tailwind + shadcn/ui theme from a few base colors.
ColorBusiness & Username Name Generator
Generate brandable business names and available-looking usernames from a keyword — instantly and privately.
GeneratorsDue Date Calculator
Estimate your due date and see how far along you are — privately, in your browser.
CalculatorsAim Trainer
Click 30 targets as fast as you can to measure your aim in ms per target, targets per minute and accuracy — then share your score.
Tests & TrainerSpacebar Counter
Count your spacebar presses — race the clock in a timed challenge or free-count forever, with live presses per second and a shareable score.
Tests & TrainerAPM Test
Measure your Actions Per Minute, StarCraft-style — every click and keypress counts over a 30, 60 or 120 second run, with live APM and a shareable score.
Tests & TrainerVisual Memory Test
Watch tiles light up on a grid, then click them all back from memory — the board grows each level. How far can you go?
Tests & TrainerSequence Memory Test
A Simon-style sequence grows one step at a time — repeat the flashing pattern in order. One mistake ends the run.
Tests & TrainerVerbal Memory Test
Words flash up one at a time — tap SEEN if it has appeared before, NEW if it is fresh. How many can you keep straight?
Tests & TrainerChimp Test
Numbers appear across a grid, then hide — click them in order from memory. The famous test where chimpanzees beat most humans.
Tests & TrainerDraw a Perfect Circle
Draw a freehand circle around the dot and get scored on how round it is — then challenge a friend to beat you.
Tests & TrainerHearing Age Test
Find your hearing age from the highest frequency you can still hear — rising tones from 8 kHz to 20 kHz, headphones on.
Tests & TrainerRandom Picker Wheel
Spin a colorful wheel of names to pick a random winner — and share the exact wheel as a link.
GeneratorsLove Calculator
A just-for-fun FLAMES love match and compatibility score — same names always give the same result, so you can share it.
GeneratorsYes or No Oracle
Ask a question, get an instant YES, NO or a classic Magic 8-Ball answer — then share the verdict.
GeneratorsThis or That Decision Maker
Enter your options, hit decide, and let a fair random pick settle it — then share the link.
Generators