Tools
Small services running on my own server. No account, no fee — close the page when you are done.
Video Downloader
YouTube · Shorts · TikTok · Instagram · X - download as MP4 video or MP3 audio.
You giveyoutube.com/watch?v=dQw4w9WgXcQ
You getvideo.mp4 · or video.mp3
Link Shortener
URL shortening with custom aliases, QR codes and click analytics.
You givekutayonur.dev/blog/cloudflare-pages-functions-notlari
You gettools.kutayonur.dev/s/f3k9wqm · 14 clicks
Paste
Share code - syntax highlighted, raw supported, permanent links.
You givenginx.conf · 42 lines
You get/p/aB3dE9 · highlighted, raw view
QR Generator
Generate PNG QR codes from any text or URL instantly.
You givehttps://kutayonur.dev
You getqr.png · qr.svg
JSON Formatter
Validate, beautify, minify - nothing leaves your browser.
You give{"a":1,"b":[2,3]}
You getindented or single-line JSON
Image Converter
PNG ↔ JPG ↔ WebP with quality control - files are never stored.
You givephoto.png · 4.2 MB
You getphoto.webp · ~0.6 MB
Password Generator
Strong passwords or word passphrases, with an entropy estimate.
You give20 characters · A-Z a-z 0-9 #$
You getq7#Lm2vX… · ~130 bit
Hash Generator
SHA-1/256/384/512 for text or files; compare against an expected value.
You givesetup.iso · 800 MB
You getSHA-256 · matches the expected value
Base64 / URL Encoder
UTF-8 safe Base64 and URL encode/decode, base64url, file to data URI.
You giveHello world
You getTWVyaGFiYSBkw7xueWE=
UUID / ULID Generator
UUID v4, time-ordered v7 and ULID; up to 100 at once.
You giveUUID v7 · 5 of them
You get0199…-7… · time-ordered
Timestamp Converter
Unix (s/ms) ↔ date, time zones, ISO 8601 and relative time like "3 hours ago".
You give1757764800
You getSaturday, 13 September 2025 15:00:00 (GMT+03:00)
Text Diff
Line and word diff of two texts; side-by-side or unified view.
You givetwo versions · 5,000 lines
You get+52 lines · −52 lines
Regex Tester
Try a pattern: highlighted matches, group table, replace preview.
You give(\d{4})-(\d{2})-(\d{2})
You get2 matches · group table
Markdown Preview
Live preview as you type; safe renderer, copy the HTML.
You give# Heading · **bold**
You getlive preview · HTML
Color Tools
HEX/RGB/HSL/OKLCH conversion, WCAG contrast check, tints and shades.
You give#ffffff on #3b82f6
You getcontrast 3.67:1 · AA large text
Text Tools
Character/word count, reading time, Turkish-aware case, slugs, line tools.
You giveÇağrı'nın İstanbul gezisi
You getcagrinin-istanbul-gezisi
JWT Decoder
Decode header and payload, see exp/iat as dates and whether it expired.
You giveeyJhbGciOiJIUzI1NiIs…
You getexp · expires in 2 hours
Minecraft Color & MiniMessage
MiniMessage, Skript HEX (<##RRGGBB>), Essentials and legacy &0-&f color formatter, gradients and live preview.
PDF Hub & Toolkit
16 professional tools: merge, split, compress, convert to Word/HTML, sign, repair and encrypt.
You givereport.pdf + appendix.pdf
You getmerged.pdf · 12 pages
PDF to Word
Convert PDF documents to Microsoft Word (.docx) with the full page layout.
HTML to PDF
Turn any web page URL or HTML code into a clean PDF document.
Compress PDF
Optimise and shrink PDF files as much as possible without losing quality.
Sign PDF
Draw your signature or upload an image and stamp it on any page.
Repair PDF
Repair and recover broken, damaged or unreadable PDF files.