# Useful Tools

> 139 free, browser-based utility tools for text, developers, SEO, finance, health, file conversion and everyday tasks. No signup, no uploads: every tool runs client-side in JavaScript, so input never leaves the device.

All pages are plain HTML generated from PHP, indexable and citable. Canonical host: https://usefulltools.si

## Text Utilities
- [Add Line Numbers](https://usefulltools.si/add-line-numbers/): Number every line of your text with custom start, step, separator and zero-padding. Free, no signup, and everything runs locally in your browser.
- [Binary Converter](https://usefulltools.si/binary-converter/): Binary Converter is a free online text tool for writers, editors, students and anyone cleaning up copy. Free online binary converter. Convert numbers…
- [Capitalize Text](https://usefulltools.si/capitalize-text/): Capitalize Text is a free online text tool for writers, editors, students and anyone cleaning up copy. Capitalize your text instantly: uppercase the first…
- [Case Converter](https://usefulltools.si/case-converter/): Convert text between UPPER, lower, Title Case, Sentence case, camelCase and more. Free, no signup, and everything runs locally in your browser.
- [Character Counter](https://usefulltools.si/character-counter/): Count characters, words, sentences, paragraphs, and reading time in real-time. Free, no signup, and everything runs locally in your browser.
- [Find and Replace Text](https://usefulltools.si/find-and-replace-text/): Replace words or phrases everywhere at once — case-sensitive, whole-word or regex matching. Free, no signup, and everything runs locally in your browser.
- [HTML Entity Encoder](https://usefulltools.si/html-entity-encoder/): HTML Entity Encoder is a free online text tool for writers, editors, students and anyone cleaning up copy. Free HTML entity encoder/decoder tool. Encode…
- [HTML to Markdown](https://usefulltools.si/html-to-markdown/): Convert HTML into clean Markdown for READMEs, documentation and CMS fields. A free online text tool with no signup, no uploads and nothing to install.
- [Keyword Extractor](https://usefulltools.si/keyword-extractor/): Extract the most important keywords from any text — ranked by frequency, ideal for SEO research. Free, no signup, runs in your browser. Free and instant.
- [Line Counter](https://usefulltools.si/line-counter/): Count lines, blank lines, words and characters, and spot duplicate lines in any text. Free, no signup, and everything runs locally in your browser.
- [Lowercase Converter](https://usefulltools.si/lowercase-converter/): Convert text to lowercase in one click, with word and character counts. A free online text tool with no signup, no uploads and nothing to install.
- [Markdown to HTML](https://usefulltools.si/markdown-to-html/): Convert Markdown to HTML with tables and code blocks, and preview the result. Free, no signup, and everything runs locally in your browser.
- [Online Text Analyzer](https://usefulltools.si/online-text-analyzer-free/): Text analysis with readability score, reading time, sentence length and top word frequencies. Free, no signup, and everything runs locally in your browser.
- [Remove Duplicate Lines](https://usefulltools.si/remove-duplicates/): Deduplicate lines, sort alphabetically or keep original order. A free online text tool with no signup, no uploads and nothing to install. Free and instant.
- [Remove Duplicate Lines](https://usefulltools.si/remove-duplicate-lines/): Remove Duplicate Lines is a free online text tool for writers, editors, students and anyone cleaning up copy. Remove duplicate lines from any text…
- [Remove Line Breaks](https://usefulltools.si/remove-line-breaks/): Join lines, remove empty lines, trim whitespace — clean up messy text fast. A free online text tool with no signup, no uploads and nothing to install.
- [Sort Lines Alphabetically](https://usefulltools.si/sort-lines-alphabetically/): Sort any list A-Z or Z-A, ignore case, remove empty lines and duplicates. A free online text tool with no signup, no uploads and nothing to install.
- [Spelling Checker](https://usefulltools.si/spelling-checker/): Spelling Checker is a free online text tool for writers, editors, students and anyone cleaning up copy. Check any text for misspellings against a built-in…
- [Text Cleaner](https://usefulltools.si/text-cleaner/): Remove extra spaces, special characters, trim lines, strip HTML tags. A free online text tool with no signup, no uploads and nothing to install.
- [Text Diff Checker](https://usefulltools.si/text-diff-checker/): Compare two texts and see exactly what changed — added and removed lines highlighted. Free, no signup, and everything runs locally in your browser.
- [Text Reverser](https://usefulltools.si/text-reverser/): Reverse text by character, by word or line by line, safely handling Unicode and emoji. Free, no signup, and everything runs locally in your browser.
- [Text Summarizer](https://usefulltools.si/text-summarizer/): Condense any text to its key sentences — perfect for articles, reports and long emails. Free, no signup, and everything runs locally in your browser.
- [Text to Slug Converter](https://usefulltools.si/text-to-slug/): Text to Slug Converter is a free online text tool for writers, editors, students and anyone cleaning up copy. Convert any title or text into a clean…
- [Uppercase Converter](https://usefulltools.si/uppercase-converter/): Convert text to UPPERCASE, with correct handling of German umlauts and the letter ß. Free, no signup, and everything runs locally in your browser.

## Developer Utilities
- [Base64 Decoder](https://usefulltools.si/base64-decoder/): Decode Base64 back into readable text, including URL-safe input and missing padding. Free, no signup, and everything runs locally in your browser.
- [Base64 Encoder / Decoder](https://usefulltools.si/base64-encoder/): Base64 Encoder / Decoder is a free online developer tool. Encode and decode text to/from Base64 instantly. No signup, nothing uploaded, works on mobile.
- [Cron Expression Generator](https://usefulltools.si/cron-generator/): Build cron expressions visually. Preview next 5 fire times. A free online developer tool with no signup, no uploads and nothing to install.
- [CSV to JSON Converter](https://usefulltools.si/csv-to-json-converter/): CSV to JSON Converter is a free online developer tool for developers debugging payloads, configs and code. Convert CSV to JSON in your browser. Quoted…
- [IP Address Lookup](https://usefulltools.si/ip-address-lookup/): IP Address Lookup is a free online developer tool for developers debugging payloads, configs and code. Analyse any IPv4 or IPv6 address in your browser…
- [JavaScript Formatter](https://usefulltools.si/javascript-formatter/): JavaScript Formatter is a free online developer tool for developers debugging payloads, configs and code. Paste JavaScript and get clean, consistently…
- [JavaScript Beautifier](https://usefulltools.si/js-beautifier/): Beautify and format minified JavaScript into readable code. A free online developer tool with no signup, no uploads and nothing to install.
- [JSON Formatter](https://usefulltools.si/json-formatter/): Format, validate, and minify JSON. Beautify messy JSON in one click. A free online developer tool with no signup, no uploads and nothing to install.
- [JSON Syntax Validator](https://usefulltools.si/json-syntax-validator/): Validate JSON syntax with exact line, column and path, catch duplicate keys and format or minify — in your browser. Free, no signup, runs in your browser.
- [JSON to CSV Converter](https://usefulltools.si/json-to-csv-converter/): JSON to CSV Converter is a free online developer tool for developers debugging payloads, configs and code. Convert JSON to CSV in your browser. Nested…
- [JWT Decoder](https://usefulltools.si/jwt-decoder/): Decode JSON Web Tokens (JWT) without a server — inspect header and payload. A free online developer tool with no signup, no uploads and nothing to install.
- [Regex Tester](https://usefulltools.si/regex-tester/): Test regular expressions against any text with real-time match highlighting. Free, no signup, and everything runs locally in your browser.
- [RGB to HEX Converter](https://usefulltools.si/rgb-to-hex-converter/): Convert RGB and HSL values to HEX and back, with sliders and a live colour preview. Free, no signup, and everything runs locally in your browser.
- [SQL Formatter](https://usefulltools.si/sql-formatter/): SQL Formatter is a free online developer tool for developers debugging payloads, configs and code. Format or minify SQL in your browser: one clause per…
- [SSL Certificate Checker](https://usefulltools.si/ssl-certificate-checker/): SSL Certificate Checker is a free online developer tool for developers debugging payloads, configs and code. Paste a PEM certificate to decode subject…
- [URL Decoder](https://usefulltools.si/url-decoder/): Encode or decode URLs and split them into host, path and query parameters. A free online developer tool with no signup, no uploads and nothing to install.
- [URL Encoder / Decoder](https://usefulltools.si/url-encoder/): URL Encoder / Decoder is a free online developer tool for developers debugging payloads, configs and code. Percent-encode text for links, query parameters…
- [UUID Generator](https://usefulltools.si/uuid-generator/): Generate UUID v4, v7 identifiers. Bulk generate up to 100 at once. A free online developer tool with no signup, no uploads and nothing to install.
- [Web Developer Tool](https://usefulltools.si/web-developer-tool-online/): A developer toolbox on one page: JSON formatter, HTML entities, timestamp converter and hash helper. Free, no signup, runs in your browser.
- [XML to JSON Converter](https://usefulltools.si/xml-to-json-converter/): XML to JSON Converter is a free online developer tool for developers debugging payloads, configs and code. Convert XML to JSON for free in your browser.…
- [YAML to JSON Converter](https://usefulltools.si/yaml-to-json/): Convert YAML to JSON and vice versa. Paste and convert instantly. A free online developer tool with no signup, no uploads and nothing to install.

## Finance Calculators
- [Compound Interest Calculator](https://usefulltools.si/compound-interest-calculator/): Calculate compound interest with any compounding frequency and optional monthly additions. Free, no signup, and everything runs locally in your browser.
- [Credit Card Validator](https://usefulltools.si/credit-card-validator/): Credit Card Validator is a free online calculator for anyone planning a loan, investment, salary or purchase. Check a card number properly: Luhn checksum…
- [Currency Converter](https://usefulltools.si/currency-converter/): Convert between 30 currencies with an exchange-rate feed, showing the rate and its date. Free, no signup, and everything runs locally in your browser.
- [Discount Calculator](https://usefulltools.si/discount-calculator/): Work out sale price, savings and effective discount, including stacked discounts. Free, no signup, and everything runs locally in your browser.
- [EMI Calculator](https://usefulltools.si/emi-calculator/): Calculate monthly EMI, total interest, and full amortization schedule for any loan. Free, no signup, and everything runs locally in your browser.
- [FD Calculator](https://usefulltools.si/fd-calculator/): Fixed Deposit maturity calculator with senior citizen rates and compounding options. Free, no signup, and everything runs locally in your browser.
- [Fuel Cost Calculator](https://usefulltools.si/fuel-cost-calculator/): Trip fuel cost from distance, consumption and price per litre, with cost per person. Free, no signup, and everything runs locally in your browser.
- [GST Calculator](https://usefulltools.si/gst-calculator/): Calculate GST amounts for all slabs (5%, 12%, 18%, 28%) — inclusive and exclusive modes. Free, no signup, and everything runs locally in your browser.
- [Loan Calculator](https://usefulltools.si/loan-calculator/): Monthly payment, total interest and a full amortisation schedule for any loan. Free, no signup, and everything runs locally in your browser.
- [Mortgage Calculator](https://usefulltools.si/mortgage-calculator/): Monthly payment, total cost and interest share of a mortgage, with a yearly schedule. Free, no signup, and everything runs locally in your browser.
- [Percentage Calculator](https://usefulltools.si/percentage-calculator/): Four percentage modes: X percent of Y, X is what percent of Y, increase or decrease, and change between two values. Free, no signup, runs in your browser.
- [Salary Calculator](https://usefulltools.si/salary-calculator/): Turn an hourly rate into weekly, monthly and yearly pay, or work backwards from a salary. Free, no signup, and everything runs locally in your browser.
- [Shipping Cost Calculator](https://usefulltools.si/shipping-cost-calculator/): Estimate parcel cost from weight, dimensions and shipping zone, including volumetric weight. Free, no signup, and everything runs locally in your browser.
- [SIP Calculator](https://usefulltools.si/sip-calculator/): Plan your mutual fund SIP investments. See maturity value, returns, and yearly growth chart. Free, no signup, and everything runs locally in your browser.
- [Tip Calculator](https://usefulltools.si/tip-calculator/): Work out tip, total and the per-person share, with quick buttons from 5 to 20 percent. Free, no signup, and everything runs locally in your browser.
- [VAT Calculator](https://usefulltools.si/vat-calculator/): Add or remove VAT at 19 percent, 7 percent or any custom rate, showing net, tax and gross separately. Free, no signup, runs in your browser.

## Health Tools
- [BMI Calculator](https://usefulltools.si/bmi-calculator/): BMI Calculator is a free online health calculator for people tracking weight, BMI and daily energy needs. Calculate your BMI with metric or imperial…
- [Calorie Calculator](https://usefulltools.si/calorie-calculator/): Estimate daily calories with the Mifflin-St Jeor formula: maintenance, mild deficit and stronger deficit. Free, no signup, runs in your browser.

## SEO Tools
- [Alt Text Checker](https://usefulltools.si/alt-text-checker/): Paste your HTML and every image is checked for missing, empty, too short, file-name-based or duplicate alt texts. Free, no signup, runs in your browser.
- [Broken Link Checker](https://usefulltools.si/broken-link-checker/): Broken Link Checker is a free online SEO tool for SEO consultants, content teams and site owners. Paste a list of URLs and every link is checked by its…
- [Heading Structure Checker](https://usefulltools.si/heading-structure-checker/): Heading Structure Checker is a free online SEO tool for SEO consultants, content teams and site owners. Paste your HTML and check the H1–H6 hierarchy.…
- [Hreflang Generator](https://usefulltools.si/hreflang-generator/): Generate hreflang tags for multilingual websites. Supports 30+ languages and country codes. Free, no signup, and everything runs locally in your browser.
- [Keyword Density Checker](https://usefulltools.si/keyword-density-checker/): Analyze keyword frequency, density, and phrases in any text. Filter stop words, sort by density or count. Free, no signup, runs in your browser.
- [Meta Description Checker](https://usefulltools.si/meta-description-checker/): Meta Description Checker is a free online SEO tool for SEO consultants, content teams and site owners. Paste your meta description and get instant checks…
- [Meta Tag Analyzer](https://usefulltools.si/meta-tag-analyzer/): Paste page HTML and inspect title, meta description, canonical, Open Graph and heading outline. Free, no signup, runs in your browser. Free and instant.
- [Meta Tag Generator](https://usefulltools.si/meta-generator/): Generate SEO-optimized meta titles, descriptions, and Open Graph tags. A free online SEO tool with no signup, no uploads and nothing to install.
- [Page Title Analyzer](https://usefulltools.si/page-title-analyzer/): Page Title Analyzer is a free online SEO tool for SEO consultants, content teams and site owners. Paste your page title and get a 0-100 score: length vs.…
- [Robots.txt Generator](https://usefulltools.si/robots-txt-generator/): Create robots.txt files visually. Presets for WordPress, Shopify, Magento. Add rules, sitemaps, crawl-delay. Free, no signup, runs in your browser.
- [Schema.org Generator](https://usefulltools.si/schema-generator/): Schema.org Generator is a free online SEO tool for SEO consultants, content teams and site owners. Generate JSON-LD structured data for 10+ schema types…
- [SEO Audit](https://usefulltools.si/seo-audit/): SEO Audit is a free online SEO tool. Free SEO audit tool. Analyze any website. No signup, nothing uploaded, works on mobile. Works on desktop and mobile.
- [SEO Checker](https://usefulltools.si/seo-checker-tool-free/): Paste your page HTML for a scored checklist: title, meta description, headings, images and links. Free, no signup, runs in your browser. Free and instant.
- [SERP Preview Tool](https://usefulltools.si/serp-preview-tool/): SERP Preview Tool is a free online SEO tool for SEO consultants, content teams and site owners. Compose title, URL and meta description and watch a live…
- [Slug Generator](https://usefulltools.si/slug-generator/): Slug Generator is a free online SEO tool. Convert any text into a clean, SEO-friendly URL slug. No signup, nothing uploaded, works on mobile.
- [XML Sitemap Generator](https://usefulltools.si/sitemap-generator/): Generate XML sitemaps with changefreq, priority, and sitemap index support. A free online SEO tool with no signup, no uploads and nothing to install.
- [URL Validator](https://usefulltools.si/url-validator/): URL Validator is a free online SEO tool for SEO consultants, content teams and site owners. Check any URL: syntax and structure, parsed components, and…

## Converters
- [Batch Image Resize](https://usefulltools.si/batch-image-resize/): Batch Image Resize is a free online file converter for anyone converting images, audio, video, units or colours. Resize multiple images at once in your…
- [Color Converter](https://usefulltools.si/color-converter/): Convert colours between HEX, RGB, HSL, HSV and CMYK, with a WCAG contrast check. Free, no signup, and everything runs locally in your browser.
- [Color Palette Generator](https://usefulltools.si/color-palette-generator/): Build complementary, analogous, triadic and monochromatic palettes from one base colour. Free, no signup, and everything runs locally in your browser.
- [Grayscale Converter](https://usefulltools.si/grayscale-converter/): Convert images to black and white with an adjustable intensity slider. Drag and drop, no upload, 100% private. Free, no signup, runs in your browser.
- [Hex to RGB Converter](https://usefulltools.si/hex-rgb/): Convert between Hex (#FF0000) and RGB (255, 0, 0) color formats. A free online file converter with no signup, no uploads and nothing to install.
- [Image Blur Tool](https://usefulltools.si/image-blur-tool/): Blur any image in your browser with an adjustable strength slider. Drag and drop, no upload, 100% private. Free, no signup, runs in your browser.
- [Image Colorizer](https://usefulltools.si/image-colorizer/): Colorize black and white photos or boost faded colors in your browser. Drag and drop, no upload, 100% private. Free, no signup, runs in your browser.
- [Image Converter](https://usefulltools.si/image-converter/): Convert images between PNG, JPEG and WebP in the browser, without uploading them. Free, no signup, and everything runs locally in your browser.
- [Image Mirror Effect](https://usefulltools.si/image-mirror-effect/): Flip any image horizontally or vertically in your browser. Drag and drop, no upload, 100% private. Free, no signup, runs in your browser. Free and instant.
- [Image Processing Tool](https://usefulltools.si/image-processing-tool-online/): Resize, rotate, flip, grayscale and compress images locally in your browser. Free, no signup, and everything runs locally in your browser.
- [Image to Text (OCR)](https://usefulltools.si/image-to-text-ocr/): Image to Text (OCR) is a free online file converter for anyone converting images, audio, video, units or colours. Extract text from images and screenshots…
- [Image to WebP Converter](https://usefulltools.si/image-to-webp/): Convert PNG, JPG, GIF and BMP images to WebP format in your browser. Drag and drop, no upload, 100% private. Free, no signup, runs in your browser.
- [Image Watermark](https://usefulltools.si/image-watermark/): Image Watermark is a free online file converter for anyone converting images, audio, video, units or colours. Add a custom text watermark to any image in…
- [JPG to PNG](https://usefulltools.si/jpg-to-png/): Turn JPG photos into PNG files, with optional resizing before download. A free online file converter with no signup, no uploads and nothing to install.
- [Meme Maker](https://usefulltools.si/meme-maker/): Meme Maker is a free online file converter for anyone converting images, audio, video, units or colours. Add classic top and bottom captions to any image…
- [MP4 to MP3 Converter](https://usefulltools.si/mp4-to-mp3-converter/): MP4 to MP3 Converter is a free online file converter for anyone converting images, audio, video, units or colours. Extract the audio track from an MP4…
- [Unit Converter](https://usefulltools.si/online-converter-tool/): Convert length, weight, temperature, area, volume and speed units in one place. Free, no signup, and everything runs locally in your browser.
- [Photo Compressor](https://usefulltools.si/photo-compressor/): Photo Compressor is a free online file converter for anyone converting images, audio, video, units or colours. Free online photo compressor. Resize…
- [Photo Rotator](https://usefulltools.si/photo-rotator/): Rotate any image 90°, 180°, 270° or to a custom angle in your browser. Drag and drop, no upload, 100% private. Free, no signup, runs in your browser.
- [PNG to JPG Converter](https://usefulltools.si/png-to-jpg/): Convert PNG images to JPG format instantly in your browser. Drag and drop, no upload, 100% private. Free, no signup, runs in your browser.
- [Remove Background](https://usefulltools.si/remove-background/): Remove image backgrounds with a local AI model. Drag and drop, no upload, 100% private, transparent PNG download. Free, no signup, runs in your browser.
- [Temperature Converter](https://usefulltools.si/temperature-converter/): Temperature Converter is a free online file converter for anyone converting images, audio, video, units or colours. Free online temperature converter.…
- [Time Duration Calculator](https://usefulltools.si/time-duration-calculator/): Time Duration Calculator is a free online file converter for anyone converting images, audio, video, units or colours. Free online time duration…
- [Unit Converter](https://usefulltools.si/unit-converter-free/): Quick unit conversion for length, weight, temperature, area, volume and speed, with a live result as you type. Free, no signup, runs in your browser.
- [Video to GIF Converter](https://usefulltools.si/video-to-gif-converter/): Video to GIF Converter is a free online file converter for anyone converting images, audio, video, units or colours. Convert MP4 or WebM clips into…

## Business Tools
- [Age Calculator](https://usefulltools.si/age-calculator/): Exact age in years, months, days and hours from any birth date, plus a countdown to the next birthday. Free, no signup, runs in your browser.
- [AI Writing Tool](https://usefulltools.si/ai-writing-tool-online/): Tighten your writing: filler words, passive voice, overlong sentences, readability score and word count. Free, no signup, runs in your browser.
- [Break-Even Calculator](https://usefulltools.si/break-even-calculator/): Calculate break-even point in units and revenue. Visual chart with profit/loss zones. Free, no signup, and everything runs locally in your browser.
- [Business Calculator](https://usefulltools.si/business-calculator-online/): Margin, markup, ROI and break-even in one place: enter cost and price, see the profit instantly. Free, no signup, runs in your browser. Free and instant.
- [Grammar Checker](https://usefulltools.si/grammar-checker-online/): Find doubled words, spacing mistakes, missing capitals and punctuation slips in your text. Free, no signup, and everything runs locally in your browser.
- [Invoice Template Generator](https://usefulltools.si/invoice-template-generator/): Invoice Template Generator is a free online business tool for freelancers, small teams and operations staff. Fill in your business and client details, add…
- [Meeting Agenda Creator](https://usefulltools.si/meeting-agenda-creator/): Meeting Agenda Creator is a free online business tool for freelancers, small teams and operations staff. Turn meeting topics into a real timed agenda…
- [Merge PDFs](https://usefulltools.si/pdf-tool-online-free/): Merge PDFs is a free online business tool for freelancers, small teams and operations staff. Merge multiple PDF files into one — free, no upload, no…
- [Phone Number Checker](https://usefulltools.si/phone-number-checker/): Phone Number Checker is a free online business tool for freelancers, small teams and operations staff. Check a phone number: detect the country from its…
- [Productivity Tool](https://usefulltools.si/productivity-tool-online/): Pomodoro timer with a task list and focus statistics, running entirely in your browser. Free, no signup, and everything runs locally in your browser.
- [Profit Margin Calculator](https://usefulltools.si/profit-margin-calculator/): Calculate profit margin, markup percentage, and total profit. Visual comparison of revenue vs cost. Free, no signup, runs in your browser.
- [ROI Calculator](https://usefulltools.si/roi-calculator/): Return on Investment calculator with annualized ROI, net profit, and payback period. Free, no signup, and everything runs locally in your browser.

## Everyday Tools
- [Barcode Generator](https://usefulltools.si/barcode-generator/): Create Code128, EAN-13 and UPC-A barcodes from text or numbers and download them as PNG. Free, no signup, and everything runs locally in your browser.
- [CSS Gradient Generator](https://usefulltools.si/css-gradient-generator/): Design linear and radial CSS gradients with a live preview and copy the finished CSS. Free, no signup, and everything runs locally in your browser.
- [Domain Name Generator](https://usefulltools.si/domain-name-generator/): Generate name ideas from your keywords with prefix, suffix and compound patterns. Free, no signup, and everything runs locally in your browser.
- [Fake Identity Generator](https://usefulltools.si/fake-identity-generator/): Create test identities for mockups and QA: name, address, email, phone and date of birth. Free, no signup, and everything runs locally in your browser.
- [Free Online Calculator](https://usefulltools.si/free-online-calculator-tool/): A calculator with history: arithmetic, percentages, square root and memory keys. Free, no signup, and everything runs locally in your browser.
- [Random Generator Tool](https://usefulltools.si/generator-tool-online-free/): Generate UUIDs, lorem ipsum text, random numbers, dice rolls and random colours. Free, no signup, and everything runs locally in your browser.
- [Lorem Ipsum Generator](https://usefulltools.si/lorem-ipsum-generator/): Generate placeholder text as paragraphs, sentences, or words. HTML tags and bullet lists supported. Free, no signup, runs in your browser.
- [Email Template Generator](https://usefulltools.si/online-email-generator-tool-free/): Editable email templates for enquiries, quotes, follow-ups, apologies and payment reminders. Free, no signup, and everything runs locally in your browser.
- [Password Generator](https://usefulltools.si/password-generator/): Generate secure passwords with custom length, character sets, and strength meter. Free, no signup, and everything runs locally in your browser.
- [Password Generator Online](https://usefulltools.si/password-generator-online/): Generate strong passwords or passphrases with a strength meter and entropy estimate. Free, no signup, and everything runs locally in your browser.
- [QR Code Generator](https://usefulltools.si/qr-code-generator/): Create QR codes for links, text, email, phone numbers and WiFi, with size and error-correction options. Free, no signup, runs in your browser.
- [Random Number Generator](https://usefulltools.si/random-number-generator/): Draw random numbers in any range — unique values, decimal places and sorting included. Free, no signup, and everything runs locally in your browser.
- [Username Generator](https://usefulltools.si/username-generator/): Generate username ideas from a keyword, with styles for gaming, social and developer handles. Free, no signup, and everything runs locally in your browser.
- [CSS Minifier](https://usefulltools.si/css-minifier/): CSS Minifier is a free online utility tool for anyone who needs a quick answer without an account. Compress a stylesheet in your browser: comments…
- [DNS Lookup Tool](https://usefulltools.si/dns-lookup-tool/): DNS Lookup Tool is a free online utility tool for anyone who needs a quick answer without an account. Look up DNS records for any domain: A, AAAA, MX…
- [Domain Availability Checker](https://usefulltools.si/domain-availability-checker/): Domain Availability Checker is a free online utility tool for anyone who needs a quick answer without an account. Check whether a domain is registered…
- [Gitignore Generator](https://usefulltools.si/gitignore-generator/): Gitignore Generator is a free online utility tool for anyone who needs a quick answer without an account. Build a .gitignore for Node.js, Python, Java…
- [Mobile Friendly Test](https://usefulltools.si/mobile-friendly-test/): Mobile Friendly Test is a free online utility tool for anyone who needs a quick answer without an account. Paste your page HTML and measure how it really…
- [Budget Calculator](https://usefulltools.si/budget-calculator/): Budget Calculator is a free online utility tool for anyone who needs a quick answer without an account. Add up your monthly income and expenses, see what…
- [HTML Formatter](https://usefulltools.si/html-formatter/): HTML Formatter is a free online utility tool for anyone who needs a quick answer without an account. Beautify or minify HTML in your browser: consistent…
- [Net Worth Calculator](https://usefulltools.si/net-worth-calculator/): Enter what you own and what you owe to see your net worth, debt-to-asset ratio and liquid assets. Free, no signup, runs in your browser. Free and instant.
- [YAML Validator](https://usefulltools.si/yaml-validator/): YAML Validator is a free online utility tool for anyone who needs a quick answer without an account. Paste YAML and validate it against the YAML 1.2…

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