All 85 tools
The complete index. Filter by name or intent, narrow by category, and sort alphabetically, by popularity or by what was added most recently.
85 of 85 tools
- Age CalculatorNewPopularExact age in years, months and days, total days, and a countdown to your next birthday.Calculators
- ASN LookupNewAS number to network name, country, registry, allocation date and holding organisation.Internet
- Average CalculatorNewMean, median, mode, range, sum, variance and standard deviation for a list of numbers.Calculators
- Base64 Encoder / DecoderEncode text to Base64 or decode it back, including URL-safe variants.Developer
- BMI CalculatorNewBody mass index from height and weight, WHO category and healthy weight range.Calculators
- Box Shadow GeneratorNewLayer CSS box shadows with live preview and copy CSS or Tailwind output.Design
- Character CounterCount characters with and without spaces, plus common platform limits.Text
- Color ConverterNewConvert HEX, RGB, HSL, HSV and CMYK with a picker, named colours, tints and shades.Design
- Compound Interest CalculatorNewMaturity value with yearly to daily compounding, monthly deposits and a growth table.Calculators
- Contrast CheckerNewCheck WCAG contrast ratios for AA/AAA text and UI components, with fix suggestions.Design
- Cron Expression ParserNewExplain any crontab schedule in English and see its next 5 run times.Developer
- CSS Gradient GeneratorNewDesign linear, radial and conic gradients and copy CSS or Tailwind code.Design
- CSV to JSON ConverterNewConvert CSV or TSV to JSON objects or arrays with RFC 4180 parsing.Developer
- Date Difference CalculatorNewDays, weeks, months and years between two dates, with weekdays and optional times.Calculators
- Discount CalculatorNewSale price after a percentage or fixed discount, stacked offers, tax, and the reverse.Calculators
- DNS LookupNewA, AAAA, MX, TXT, NS, CNAME, SOA, CAA and SRV records from two resolvers, side by side.Internet
- Email Security CheckerNewMX, SPF with real lookup counts, DMARC, DKIM, MTA-STS, TLS-RPT, DNSSEC, CAA and BIMI for a domain.Security
- EMI CalculatorPopularLoan EMI, total interest and a month-by-month repayment schedule.Calculators
- Find and ReplaceNewFind and replace text or regex patterns with live match highlighting and undo.Text
- GST CalculatorPopularAdd or remove GST at any rate and split it into CGST, SGST or IGST.Calculators
- Hash GeneratorNewMD5, SHA-1, SHA-256, SHA-384 and SHA-512 of text or files, with HMAC.Developer
- HTML Entity Encoder / DecoderNewEscape text to HTML entities or decode &, © and 😀 back to text.Developer
- Image CompressorPopularShrink JPG, PNG and WebP files with quality control and target sizes.Images
- Image ResizerResize by pixels or percentage with presets and locked aspect ratio.Images
- Image to ICO ConverterCreate multi-size ICO icons from PNG, JPG, WebP, GIF or SVG images.Images
- Image to PDF ConverterPopularTurn one or many JPG, PNG or WebP images into a single PDF.Images
- Internet Speed TestNewPopularMeasure real download, upload, ping and jitter with an animated gauge.Internet
- IP LookupNewReverse DNS, network (ASN), prefix, registry and owning organisation for any IPv4 or IPv6 address.Internet
- JPG to PDF ConverterConvert JPG photos into a PDF with page size and margin options.PDF
- JPG to PNG ConverterConvert JPG photos to lossless PNG files.Images
- JPG to WebP ConverterConvert JPG to modern WebP for faster websites.Images
- JSON DiffCompare two JSON documents and see added, removed and changed values.Developer
- JSON FormatterPopularPretty-print, minify and validate JSON with error locations.Developer
- JSON to CSV ConverterConvert JSON arrays to CSV with flattened nested fields.Developer
- JSON to TypeScriptPopularGenerate TypeScript interfaces from a JSON sample.Developer
- JSON to YAML ConverterConvert JSON to clean, correctly quoted YAML.Developer
- JSON ValidatorCheck whether JSON is valid and see exactly where it breaks.Developer
- JWT DecoderPopularDecode JWT header and payload locally. Signatures are not verified.Developer
- Keyword Density CalculatorNewCount words and find the most repeated 1, 2 and 3-word phrases with density.SEO
- Lorem Ipsum GeneratorNewPlaceholder paragraphs, sentences, words or list items, as text or HTML.Generators
- Merge PDFPopularCombine multiple PDF files into one, in the order you choose.PDF
- Meta Tag GeneratorNewGenerate title, description, robots, canonical, Open Graph and Twitter tags with previews.SEO
- Number Base ConverterNewConvert between binary, octal, decimal, hex and any base 2–36 at any size.Developer
- Password GeneratorNewPopularStrong random passwords and passphrases with honest entropy, made in your browser.Generators
- Percentage CalculatorWhat is X% of Y, what percent is X of Y, and percentage change.Calculators
- PNG to JPG ConverterConvert PNG to smaller JPG files, with a fill color for transparency.Images
- PNG to WebP ConverterConvert PNG to WebP while keeping transparency.Images
- Port CheckerNewIs a port open on your server? One host, one common port, open/closed/filtered plus a TCP ping.Internet
- QR Code GeneratorNewPopularQR codes for links, Wi-Fi, email, phone, SMS and contacts, as PNG or SVG.Generators
- Random Number GeneratorNewRandom numbers in any range, dice rolls and coin flips, cryptographically fair.Generators
- Reading Time CalculatorNewEstimate how long text takes to read or speak, at any words-per-minute.Text
- Redirect CheckerNewTrace every redirect hop with status, type and timing; spot loops; compare http, https and www.Security
- Regex TesterNewTest JavaScript regular expressions with live highlighting, groups and replace preview.Developer
- Remove Duplicate LinesDelete repeated lines with case, whitespace and ordering options.Text
- Reverse TextNewReverse characters, word order or line order without breaking emoji.Text
- Robots.txt GeneratorNewBuild a robots.txt with user-agent groups, allow/disallow rules, sitemaps and a linter.SEO
- Salary / CTC CalculatorBreak down CTC into in-hand salary with PF, professional tax and income tax.Calculators
- Security Headers CheckerNewDeep dive on HSTS, CSP directives, framing, referrer and permissions policies and cookie flags.Security
- Simple Interest CalculatorNewInterest and total amount from principal, rate and time, with the SI formula shown.Calculators
- Slug GeneratorNewTurn titles into clean, ASCII URL slugs with a live link preview.Text
- Sort LinesNewSort lines A→Z, Z→A, numerically, by length, reversed or shuffled.Text
- Split PDFExtract page ranges or split every page into its own PDF.PDF
- SSL Certificate CheckerNewValidity, expiry date, issuer, covered names, chain and TLS version for any site.Internet
- Subnet CalculatorNewIPv4 CIDR and mask maths: network, broadcast, host range, wildcard, splits and IPv6 prefixes.Internet
- SVGA MakerConvert videos and GIFs to SVGA animations. Free with a signed-in account.Converters
- Text Case ConverterConvert between UPPER, lower, Title, Sentence, camel, Pascal, snake and kebab case.Text
- Text CleanerNewRemove extra spaces, line breaks, HTML tags, smart quotes and hidden characters.Text
- Text Diff CheckerNewCompare two texts line by line with added/removed highlighting and a unified patch.Developer
- Time Zone ConverterNewSee one date and time in many time zones with UTC offsets and day-change markers.Converters
- Tip CalculatorNewTip, total and per-person share for any bill, with presets and rounding options.Calculators
- Unit ConverterNewPopularLength, weight, temperature, storage, time, area, volume and speed with exact factors.Converters
- Unix Timestamp ConverterConvert timestamps to dates and dates to timestamps in any time zone.Developer
- URL Encoder / DecoderNewPercent-encode or decode URLs and query strings, including form encoding.Developer
- URL ParserNewSplit a URL into scheme, host, path and query, edit parameters and rebuild it encoded.Internet
- User Agent CheckerNewYour browser's user agent decoded, plus screen, language, connection and preferences.Internet
- UTM BuilderNewBuild campaign URLs with utm_source, medium, campaign, term and content.SEO
- UUID GeneratorGenerate one or many random UUIDs (v4 and time-ordered v7).Developer
- Website InsightsNewPopularOne URL, ten sections: status, certificate, DNS, hosting, tech, SEO basics, robots, headers, timing.Internet
- Website Performance CheckerNewTime to first byte, download time, HTML size, compression, cache headers and resource counts.Internet
- Website Security CheckerNewPopularHTTPS, certificate, headers, cookies, mixed content, security.txt, SPF and DMARC in one report.Security
- Website Status CheckerNewIs a site down? HTTP status, response time, redirect chain and headers from our server.Internet
- Website Technology CheckerNewPopularWhat is a site built with? Framework, CMS, server, hosting, analytics and widgets, with evidence.Internet
- What Is My IPNewPopularYour public IPv4 or IPv6 address, location, ISP and ASN, plus browser and device details.Internet
- WHOIS LookupNewRegistrar, expiry countdown, status locks explained, name servers and DNSSEC for any domain.Internet
- Word CounterPopularCount words, characters, sentences, paragraphs and reading time.Text