316 tools in this category
Send a secret message that self-destructs after one read. The encryption key never leaves your browser.
Health, home and energy calculators for daily use.
BMI, BMR/TDEE, body fat, calories burned, heart rate zones, ovulation calculator.
Paint, tiles, room volume, ventilation, AC sizing and heating power calculators.
Electricity cost, live energy prices, solar irradiance, storage, UPS runtime, power banks.
Size converters: shoes, clothing, bras, rings, hats, gloves.
Loans, savings and pricing - personal and business finance.
Loan, refinance, mortgage, debt payoff and credit card payoff calculators.
Savings goal, compound interest, CAGR, DCA, inflation, stock snapshots.
Margin, break-even, sales tax, discount stacking, tip, percent, fuel, commodities, FX.
Dates, text editing and unit conversions.
Age, countdown, working days, holidays, duration, date diff, formats, Pomodoro.
World clock, timezone converter, meeting planner, NTP drift, astro clock, ISS tracker.
Char counters, diff, find-replace, case converter, sort, slug generator.
Converters: length, weight, temperature, volume, area, speed, pressure.
Images, PDF, audio, video, icons, QR codes and colors.
Compressor, resizer, cropper, rotator, editor, OCR, EXIF stripper, color picker.
Merge, split, rotate and edit PDF files in your browser - no upload.
Favicon generator, Windows ICO, macOS ICNS, favicon downloader.
Universal converter + 11 categories: images, video, audio, archives, ebooks, documents.
Trimming, converting and editing sound and video files.
QR code generators: link, Wi-Fi, vCard, email, SMS, text.
Barcode generator and reader, GTIN check, price tag printer.
HEX/RGB/HSL/OKLCH converter, mixers, palettes, contrast, color-blindness, gradients.
LLM, passwords, encryption, Bitcoin and Ethereum.
Token counters, cost calculators, model comparators, prompt builder, prompt library.
Password generator, breach check, hash, bcrypt, PIN, TOTP, JWT decoder.
AES, PGP, CSR, JWT signer, bcrypt benchmark, hex/base32/58/64 converter.
Gas tracker, NFT metadata, ENS resolver, smart contract verifier, TX explorers.
Network, data, API, devops, frontend and docs.
DNS, WHOIS, SSL, robots/sitemap, email DNS, OG preview, IP info, CIDR, IPv6.
Server configs: SSH, systemd, iptables, nginx, docker-compose - long-form config files.
Meta tags, JSON-LD, robots.txt builder, sitemap.xml builder.
JSON formatter, JSON↔YAML↔TOML, JSONPath, JSON Schema, JSON→TypeScript, XLSX→JSON.
SQL formatter, dialect converter, DBML→SQL, connection string parser, SQL→ORM.
Base64, URL encoder, HTML entities, multi-base (hex/32/58/64), bitwise playground.
Regex tester, regex from examples, Python regex converter, ESM↔CJS, cURL→fetch/axios.
tsconfig, package.json, vite/next config, npm/yarn/pnpm, pip/poetry/uv, .editorconfig.
Webhook receiver/forwarder, mock API, HTTP request tester, GraphQL, OpenAPI.
GitHub Actions YAML, GitLab CI, Kubernetes validator, Dockerfile linter.
Command builders: find, tar, rsync, sed/awk, cron - paste-ready terminal one-liners.
HTML→JSX, SVG optimizer, SVG→React, CSS specificity, Tailwind cleanup, HTML↔MD.
Beautifier for 26 programming languages (JS, TS, Python, C++, Rust...) + JavaScript obfuscator.
Visual generators: box-shadow, border-radius, clip-path, bezier, animations, glass.
README builder, TOC, table editor, conventional commits, changelog, MD lint.
HTTP codes, HTTP headers, MIME types, .gitignore generator, OSS license picker.
Faker, schema data generator, themed lorem ipsum, random numbers, UUID.