Developer Tools

Okul Açılış Sayacı

Okulların açılmasına kaç gün kaldı? MEB takvimiyle canlı geri sayım.

Ara Tatil Sayacı

Ara tatil ne zaman başlıyor, ne zaman bitiyor? Canlı geri sayım.

Yarıyıl (15 Tatil) Sayacı

Yarıyıl tatiline ve karne gününe kalan süre.

Okul Kapanış Sayacı

Okulların kapanmasına ve yaz tatiline kalan süre.

JSON Formatter & Validator

Instantly format, validate and minify your JSON data.

Text Diff Checker

See line-by-line differences between two texts or code snippets.

Base64 Encoder / Decoder

Encode text to Base64 or decode from it (UTF-8 safe).

URL Encoder / Decoder

Safely encode/decode URLs and query parameters.

MD5, SHA-1 & SHA-256 Hash Generator

Compute MD5, SHA-1, SHA-256 and SHA-512 digests of any text, entirely in your browser.

JWT Decoder & Inspector

Decode the header and payload of a JWT and check its expiry. The token never leaves your browser.

UUID / GUID Generator (v4)

Generate cryptographically random v4 UUIDs — one at a time or in bulk.

Unix Timestamp Converter

Convert a Unix timestamp to a readable date and back. Shows UTC and local time side by side.

Text Case & Format Converter

Convert text to UPPER, lower, Title Case, camelCase, snake_case or kebab-case.

Strong Password Generator

Generate cryptographically secure random passwords with control over length, character sets and entropy.

Word & Character Counter

Instantly count words, characters, sentences, paragraphs and lines — plus estimated reading time.

Regex Tester & Debugger

Test a regular expression live and see every match, its position and all capture groups.

Color Converter — HEX, RGB, HSL

Convert between HEX, RGB, HSL and CMYK, and check the WCAG contrast ratio at the same time.

URL Slug Generator

Turn a title into a clean, SEO-friendly URL slug with correct handling of accented characters.

Lorem Ipsum Generator

Generate as many placeholder paragraphs, sentences or words as your layout needs.

HTML Entity Encoder / Decoder

Safely encode HTML special characters, or decode entity-encoded text back to plain text.

CSV to JSON Converter

Convert a CSV table into a JSON array and back. Quoted fields and embedded commas handled correctly.

Line Tools — Sort & Remove Duplicates

Sort lines alphabetically, remove duplicates, drop blanks, number them or shuffle.

Text to Binary & Hex Converter

Convert text to binary or hexadecimal bytes and back, with correct UTF-8 handling.