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96 focused browser tools · 21 languages

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A growing collection of free tools, in-depth articles, browser games, and hand-picked links — all running locally in your browser. No tracking, no uploads.

Popular:ASCII Text Art GeneratorBase64 ConverterBase64 FileBasic Auth GeneratorBcryptExplore Tools
Featured Tools

Hand-picked utilities developers reach for every day.

Base64 Converter
Featured
Encode and decode Base64 strings
base64
encode
decode
Browser Fingerprint
Featured
Discover what your browser reveals about you — device, GPU, fonts, battery, network, and more
browser
fingerprint
privacy
Case Converter
Featured
Convert text between camelCase, snake_case, PascalCase, and more
case
text
camel
Color Converter
Featured
Convert between HEX, RGB, HSL, and more
color
hex
rgb
Crontab Generator
Featured
Generate cron expressions with a visual editor and get human-readable descriptions
cron
crontab
schedule
Hash Text
Featured
Generate hash values from text using MD5, SHA1, SHA256, SHA224, SHA384, SHA512, SHA3, or RIPEMD160
hash
md5
sha
Image Converter
Featured
Convert images between JPEG, PNG, WebP, and AVIF formats
image
convert
jpeg
Image Scrambler
Featured
Scramble and descramble images using space-filling curves
image
scrambler
obfuscation
Free Invoice Generator
Featured
Create professional invoices instantly with live preview. Fill in your details, add line items, and download as PDF — no sign-up, no watermarks, completely free.
invoice
pdf
billing
JS Compiler
Featured
Write and run JavaScript code in your browser
javascript
compiler
playground
JSON Diff
Featured
Compare two JSON objects and highlight the differences
json
diff
compare
JSON Formatter
Featured
Format, minify, and validate JSON
json
format
developer

General Blog

A general-interest blog covering internet culture, technology, AI, people, and events.

Dlaczego test Turinga stracił znaczenie w epoce AI

Test Turinga nadal mierzy, czy system brzmi jak człowiek, ale nie pokazuje już, czy rozumie, rozumuje, działa niezawodnie ani zasługuje na zaufanie.

artificial-intelligence
turing-test
ai-evaluation
Kryzys konkursów programistycznych i algorytmicznych w epoce AI

Lista Baidu Star 2026, nowe zasady dotyczące AI i skażenie benchmarków pokazują, jak przeprojektować konkursy programistyczne.

AI
Competitive Programming
Algorithm
Historia miłosna Sun Gę: moja dziewczyna Jing Tian

Pełny przedruk anonimowego satyrycznego tekstu Moja dziewczyna Jing Tian, który w 2026 roku obiegł chiński internet: fikcyjna narracja pierwszoosobowa, projekt składu XeLaTeX na GitHubie, 3,4 tys. gwiazdek. Fabuła jest całkowicie fikcyjna.

Sun Gę
Jing Tian
literatura satyryczna