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Sudoku
Solve original, uniquely solvable grids with pencil notes, duplicate conflict markers, entry checks and explained reveals.
Logic & maths gamesPlay gameTeacher Typing Exercise Builder
Create and reorder local typing prompts, preview them in the shared keyboard player, inspect text-length groups and print or export a reusable assignment.
Authoring & accessibilityOpen toolText Diff Checker
Compare two text versions with line or word differences, ignore rules and a downloadable change report.
Text toolsOpen toolText Formatter
Change letter case, tidy spacing and remove duplicate lines.
Text toolsOpen toolText on Image & Meme Maker
Add a meme caption, a clean caption bar or plain text to any picture.
Image toolsOpen toolTic-Tac-Toe
Tap the board to play a random, tactical or optimal bot, or share a local two-player match.
Board & strategyPlay gameTill vs Paybill Business Cost Comparator
See whether a Till or a Paybill costs your business less for the payments you usually receive.
Mobile money & telecom tariffsOpen toolTime Zone Converter
Convert a date and time between named zones, with daylight-saving checks.
CalculatorsOpen toolTitle Capitalization by Style
Apply reviewed APA, MLA, Chicago and AP title-case conventions to entered text, preserving chosen acronym exceptions.
Writing & text toolsOpen toolTouch Screen Test
Draw across a grid and inspect simultaneous browser pointer events.
Screen Testing & ColorOpen toolTrade-in and Upgrade Calculator
Work out the top-up for an upgrade using your trade-in offer and charges.
ElectronicsOpen toolTreasury Bill Ladder Builder
Arrange user-entered purchase amounts across 91/182/364-day maturities, showing projected cash availability.
Investing & capital marketsOpen toolTreasury Bond Coupon Cash-Flow Calendar
Build coupon schedules from entered bond terms, day-count and dated coupon conventions.
Investing & capital marketsOpen toolTV Size & Viewing Distance Calculator
Find the right TV size for how far you sit, or the best seat distance for the TV you have, with a wall-width check.
ElectronicsOpen toolTwo Truths and a Lie Party Prompter
Let players write their own three statements, reveal guesses and track local round scores.
Party & family gamesPlay gameUnit Converter
Convert length, mass, area and temperature with clearly labelled units.
CalculatorsOpen toolUnlock PDF
Remove the password from a PDF you are allowed to open, so it opens without asking.
PDF toolsOpen toolURL Percent Encoder & Decoder
Encode and decode URL text with separate component, whole-URL and form-value modes.
Developer toolsOpen toolUsed Device Inspection Checklist
Check a used device, record issues and print your inspection notes.
ElectronicsOpen toolUTM Link Builder
Build campaign links with consistent source, medium and campaign tags.
QR & linksOpen toolVAT Discounts, Returns & Credit Adjustment Simulator
Calculate a proportional credit against the original invoice and review the selected statutory timing window.
VAT & KRAOpen toolVAT Input–Output Reconciliation Worksheet
Build a monthly bridge from output VAT, eligible input VAT, credit notes and confirmed credits. Enter VAT amounts, not full invoice totals.
VAT & KRAOpen toolVisual Site Structure Designer
Plan your website pages and hierarchy in a visual sitemap. Add, move and export pages before implementing your design.
SEO & website toolsOpen toolVolumetric and Chargeable Weight Calculator
Compare actual parcel weight with dimensional weight for your carrier’s rules.
Delivery & LogisticsOpen toolVote Margin & Percentage-Point Calculator
Calculate vote differences and percentage-point leads from provided counts without declaring a winner.
Civic & public informationOpen toolVoter Registration Eligibility Guide
Provide dated official eligibility information and links without asserting individual registration status.
Civic & public informationOpen toolVoter Turnout Percentage Calculator
Compute turnout for any user-entered registered-voter denominator and compatible turnout numerator.
Civic & public informationOpen toolWatermark PDF
Stamp text such as CONFIDENTIAL or COPY, or your logo, across the pages of a PDF.
PDF toolsOpen toolWebsite Structure & Crawl Depth Analyzer
Analyze an existing website structure from its URL: inspect crawl depth, internal link paths and possible orphan pages, then download the report.
SEO & website toolsOpen toolWeighted Decision Matrix
Rank options against weighted criteria and check how removing a criterion changes the result.
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