Dev
Paste in messy JSON, raw timestamps, or Base64 strings — get a clean result out. Faster than opening your IDE for a one-off task.
All Dev
Base64 Encoder / Decoder
Encode and decode Base64 instantly — full UTF-8 support for CJK and emoji. Runs locally in your browser.
CSS Minifier / Beautifier
Minify CSS for shipping or beautify it for review, with the original vs result byte delta visible at a glance.
File to Markdown
Convert Word, Excel, CSV, HTML and PDF to clean Markdown for AI — with a live token meter and trim controls. 100% in-browser, nothing uploaded.
Hash Generator
Instantly generate MD5, SHA-1, SHA-256, and SHA-512 digests for any text. Hashes are grouped into 4-char chunks for easy comparison; SHA-256 is the modern default, MD5 and SHA-1 are kept available only for legacy checksum compatibility. Everything runs in your browser.
HTML Entity Encoder / Decoder
Encode or decode HTML entities — paste in, copy out.
Number Base Converter
Convert between BIN, OCT, DEC, and HEX live — with bit strip visualization and power-of-2 detection.
QR Code Generator
Paste any URL or text and get a downloadable QR code instantly — adjustable size and error correction, runs locally in your browser.
Unix Permissions Calculator
Toggle the 9 owner/group/other permission bits and read both numeric (755) and symbolic (rwxr-xr-x) chmod output side-by-side. Type a 3-digit value in either direction; invalid input or special-bit prefixes surface a clear hint.
URL Encoder / Decoder
Encode or decode URLs — handles CJK paths and special characters.
UUID Generator
Generate one or many UUID v4 identifiers instantly — toggle hyphens, copy one or all, zero dependencies.
YAML / JSON Converter
Two-way YAML ↔ JSON converter. Handles nested structures, multiline blocks, and shows line-number errors. Runs entirely in your browser.