Get the job done, step by step.
Each guide walks one everyday task from start to finish with a free tool — no signup, no fuss, done in minutes.
How to compress an image to under 100 KBShrink a JPEG, PNG, WebP, or AVIF image below 100 KB for forms, portals, and email attachments — free, no signup, and no watermarks.How to merge PDF files into one documentCombine several PDFs into a single file in the right order — free, no signup, no watermarks, and your documents stay private.How to make a QR code for a linkTurn any URL into a QR code you can print or share — free, no signup, no expiring codes, and downloadable as an image.How to get the hex code of a color from an imagePick any pixel from a photo or screenshot and get its exact hex, RGB, and HSL values — free and instant, no signup.How to format and validate JSONPretty-print minified JSON and find syntax errors instantly — free, no signup, and your data is never uploaded.How to count words and characters in an essayCheck an essay, statement, or post against a word or character limit — free, instant, and nothing you write is uploaded.How to convert px to rem in CSSTurn pixel values into rem units for accessible, scalable CSS — free converter plus the simple math behind it.How to calculate the days between two datesCount the exact days, weeks, and months between any two dates — for deadlines, notice periods, trips, and countdowns. Free and instant.How to resize an image to exact pixelsSet an image to the exact pixel dimensions a form, CMS, or listing demands — free, no signup, and the file never leaves your device.How to convert a PNG to JPGTurn PNG images into smaller JPG files with control over quality and the background color for transparent areas — free, private, no signup.How to split a PDF into separate pagesExtract a page range, pull out selected pages, or save every page as its own PDF — free, no signup, no watermarks, and the original stays untouched.How to convert CSV to JSONTurn a CSV export into clean JSON records — or JSON back into CSV — free, private, and without opening a spreadsheet app.How to convert text to uppercase, lowercase, or title caseFix the case of any text in one click — upper, lower, title, sentence, camelCase, snake_case, and more. Free, instant, no signup.How to convert HEX to RGB (and back)Translate any CSS color between HEX, RGB, HSL, HSV, and OKLCH — alpha channel preserved, copy-ready values, free and instant.How to reduce a PDF's file sizeShrink a scan or photo-heavy PDF under an upload or email limit — free, no signup, and you only get a file back when it is genuinely smaller.How to add a watermark to an imageStamp a text watermark on a photo with control over position, color, opacity, and size — free, private, and flattened right in your browser.How to crop an image to the exact region you needCut a photo down to a centered square, a widescreen still, or a pixel-precise rectangle — free, no signup, and processed entirely on your device.How to generate random UUIDs (v4)Generate 1 to 100 random version 4 UUIDs with your browser's cryptographic randomness — uppercase or lowercase, with or without hyphens. Free and instant.How to convert a Unix timestamp to a date (and back)Turn an epoch number into ISO, UTC, and local date views — or a local date and time into Unix seconds and milliseconds. Free and instant.How to scan a QR code from an imageDecode a QR code from an uploaded image, a pasted screenshot, or your camera — and see where it leads before you open anything. Free and private.How to encode and decode Base64 (and Base64URL)Convert UTF-8 text to Base64, unpadded Base64URL, or percent-encoded URL-component text — and back — free, instant, and private in your browser.How to count business days between two datesCount Monday-to-Friday working days across a date range, minus your own holiday list — with calendar, weekend, and excluded-holiday totals shown separately. Free and instant.How to check color contrast for WCAGCalculate the WCAG 2 contrast ratio between a foreground and background HEX color, preview the pair, and test it against AA, AAA, large-text, and UI thresholds. Free and instant.How to compare two texts and find the differencesDiff two texts word by word or line by line — unchanged, removed, and added segments highlighted, with addition and removal counts. Free and private.How to convert MB to GB (and GB to GiB)Translate any data size among bits, bytes, decimal KB–TB, and binary KiB–TiB — with a switch for SI (1000) or legacy (1024) labels. Free and instant.How to generate a strong random passwordGenerate a cryptographically random password from the character sets you choose, with the entropy in bits reported — nothing stored or sent. Free and instant.How to calculate an aspect ratioReduce any width and height to a simplified ratio like 16:9, read the decimal value, and compute the matching height for a target width. Free and instant.How to convert paper sizes (A4, Letter, and more)See any standard sheet's dimensions in millimeters, centimeters, inches, points, and pixels at your chosen DPI — portrait or landscape. Free and instant.How to scale a recipe up or downMultiply every ingredient quantity by the serving-count ratio — decimals, simple fractions, and mixed numbers all handled. Free and instant.How to convert JPG images to a PDFPlace ordered JPEG, PNG, or WebP images into one PDF — one image per page, A4 or US Letter or pages fitted to each image. Free, private, no signup.How to rotate PDF pagesTurn every page — or a typed selection like 1-3,5 — by 90°, 180°, or 270° clockwise, without rasterizing text. Free, private, no signup.How to create a favicon for your websiteTurn one logo into a complete favicon pack — 6 PNG sizes, an ICO file, and a starter web app manifest — free, private, and proportion-safe.