Fast, private & instant
online tools
Convert, edit, inspect and create directly in your browser. No software installation required. Fast, secure and easy to use.
Power up your workflow with browser extensions
Chrome extensions for full-page screenshot capture, screen recording, and mobile responsive testing.
Appkiro Screenshot & Screen Recorder
Capture full-page screenshots, record your screen with microphone audio, annotate, blur sensitive details, and export to PNG or PDF instantly.
Appkiro Mobile Simulator & Responsive Tester
Preview and test any website across 50+ iPhone, iPad and Android viewports. Touch emulation, device frames, orientation switching and mockup export included.
Explore tools by category
306 free online tools organised into 21 focused categories, all running inside your browser.
Video
Fast, private browser-based tools to convert, compress, trim, and record video clips without server uploads.
Audio
Browser-native audio utilities: trim, merge, record voice, clean noise, and convert sound files.
Images & Assets
Edit, resize, optimize, remove background, and convert photos directly in your browser with zero data leakage.
PDF Tools
Merge, split, rotate, convert, and inspect PDF files locally without uploading private documents.
Color
Palette generators, contrast checkers, color converters (HEX, RGB, HSL, CMYK), and color blindness simulators.
Base64 Tools
Encode and decode Base64 for images, audio, JSON, XML, CSS, HTML, and binary payloads instantly.
Data
Format, convert, and validate data across JSON, CSV, Excel, XML, YAML, and TypeScript interfaces.
String Tools
Manipulate text: case conversion, deduplication, sorting, regex testing, whitespace stripping, and diffing.
Social Media
Create multi-slide Instagram carousels, optimize social share previews, and format social post media.
Typography & Text
Typography unit converters (px/rem), line-height calculators, font inspector, and glyph browser.
Developer Tools
Essential web utilities: JWT debugger, cURL parser, UUID generator, crontab tester, and meta tag builder.
Crypto & Security
Strong password generators, cryptographic hashing, mnemonic phrases, and blockchain address verification.
Other Tools
Handy day-to-day web tools: QR code reader & generator, barcode builder, and ZIP compress/extract.
Calculators
Scientific calculators, graphing algebra, financial staking rewards, and gas fee estimations.
DNS & Network
DNS lookup, port scanner, WebSocket tester, public IP detection, SPF & MX record inspection, and FTP test.
Education
Educational tools: math worksheet generator for kids, teachers, and parents.
Language Experiments
Linguistic and phonetic experiments, including the Shavian alphabet transliterator.
Number Utilities
Convert numbers across binary, decimal, hex, octal, IP addresses, floating point, and words.
CSS Tools
Generate CSS box-shadows, animations, gradients, borders, beautify code, and Tailwind cheat sheet.
Date Time
Unix timestamp converter, countdown timers, lunar calendar converter, and date arithmetic calculators.
Unit Converters
Convert physical units: length, weight, area, volume, speed, temperature, and typography measurements.
Can't find the tool you need?
Use the search bar in the header to look through all 306 tools at once.
Simple tools,
real productivity
Built to clear everyday digital chores in seconds. No heavy installs, no account required, and no intrusive ads.
Private by design
Your files never leave the device. Video, PDF and image work runs in browser memory through WebAssembly and WebCodecs.
Instant & lightweight
Every tool opens in a moment. Clean, focused interfaces tuned for both desktop and mobile.
Free, with no watermarks
No daily export limits, no watermark stamped on your files, and no credit card anywhere.
Ready to streamline your everyday digital workflow?
Try 306 free online tools and the Chrome extensions today. No sign-up, no downloads.