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LED Bulbs: Match the Light You Want Before Comparing Watts

Choose LED bulbs by light output, color and fixture compatibility, then compare running costs. A worked example shows why your hours of use change the saving.

Oct 23, 09:40 PM

Cloud Sync: Prove You Can Recover a File Before You Need It

A cloud sync folder can repeat an accidental deletion. Check what survives, keep a separate copy of important files, and test recovery without risking your originals.

Oct 22, 11:49 PM

Delivery Texts: Check the Order Without Opening the Link

Unexpected delivery texts deserve an independent check. Find the real order, verify any fee through the carrier, and act on what you shared if you already responded.

Oct 21, 09:39 PM

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01Word counter & text case converterCount words and characters, estimate reading time and change text case in your browser.02Unit converterConvert length, weight and temperature with clear units and no upload.03Percentage & discount calculatorWork out a percentage, a price after a discount, or a percentage change.04World clock & time zone converterConvert a specific UTC date and time to major cities with daylight saving handled by your browser.05JSON formatter & validatorValidate and format JSON locally, or make it compact for copying.06Image resizer & compressorResize a JPEG, PNG or WebP and download a lighter image without uploading it.07Merge PDF filesCombine PDF files in the order you choose and download one document. Files stay in your browser.08Split PDF & extract pagesExtract a page or page range from a PDF into a new document without uploading the original.09JPG & PNG to PDF converterTurn pictures into a PDF with one image per page, ordered the way you want.10Free QR code generatorCreate a downloadable QR code for a link or text, with no account, tracking redirect or expiry setting.11Random password generatorGenerate a random password on your device with browser cryptography and a choice of character groups.12Days between dates calculatorCount the days and weeks between two calendar dates, with an option to include the end date.13Unix timestamp converterConvert Unix seconds or milliseconds to UTC, or turn a UTC date and time into a timestamp.14Unit price comparison calculatorCompare two pack sizes by the same unit and see which offers the lower price per quantity.15Tip & split bill calculatorCalculate a percentage tip and split the total among a group with transparent rounding.16Bulk-buy savings calculator with food wasteCompare a regular pack with a bulk purchase after allowing for the amount you might throw away.17Subscription cost-per-use calculatorSee the annual cost of a monthly subscription and what each actual use costs at your current habit.18CSV to Markdown table converterConvert quoted CSV data into a Markdown table for GitHub, notes or documentation, entirely on your device.19Speech time calculator with pausesEstimate a script’s spoken duration from your own words-per-minute pace plus a separate pause allowance.20Image print size calculator: pixels to inches and cmCalculate a photo’s physical print dimensions at a chosen pixels-per-inch resolution without uploading the image.21Meeting overlap finder for two time zonesFind shared working-hour windows for two cities on a chosen UTC date, including daylight-saving offsets.22Compound growth calculatorSeparate deposits from growth under a constant-return scenario.23Purchasing power calculatorExplore what a fixed future amount would buy in today’s money.24Average share cost calculatorCombine two purchases of the same security using quantity-weighted prices.25Remove duplicate linesExample: apple apple pear 26Sort lines naturallyExample: item10 item2 item1 27Trim lines & remove blanksExample: apple pear 28Reverse line orderExample: first second 29Add line numbersExample: apple pear 30Find & replace textExample: Hello world 31URL component encoderExample: hello world?32URL component decoderExample: hello%20world%3F 33UTF-8 to Base64Example: Hello 안녕 34Base64 to UTF-8Example: SGVsbG8=35HTML escapeExample: <p>Hello</p>36SHA-256 text hashExample: hello 37UUID v4 generatorExample: UUID v4 · 1–100 38Random integerExample: 1 ≤ n ≤ 100 39Random list pickerExample: apple pear orange 40Greatest common divisorExample: A = 12, B = 18 → 6 41Least common multipleExample: A = 12, B = 18 → 36 42Simplify a ratioExample: 12 : 18 → 2 : 3 43Aspect ratio heightExample: 1920 × 1080 → 1280 × 720 44Average of numbersExample: (10 + 20 + 30) / 3 = 20 45Median of numbersExample: 1, 3, 9 → 3 46Sum of numbersExample: 10 + 20 + 30 = 60 47HEX to RGBExample: #1a73e8 → rgb(26, 115, 232)48RGB to HEXExample: rgb(26, 115, 232) → #1a73e8

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Merge PDF ↗Make a QR code ↗Meeting overlap ↗World clock ↗Resize an image ↗Money calculators ↗

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