Instant, bi-directional Base64 encoder and decoder with UTF-8 character support. Convert text and strings to and from Base64 with zero server roundtrips.
Encode SVGs, small icons, and configuration values into Base64 strings ready for HTML/CSS embedding.
Inspect and decode Basic Auth credentials and encoded payload headers safely.
Correctly handles international characters, Chinese glyphs, and emojis without encoding corruption.
iframe sandbox="allow-scripts..."依据《中文文案排版指北》规范，自动在中文汉字与英文、数字之间添加空格（盘古之白），纠正全角半角标点混用，支持 Markdown 实时排版转换与一键复制。纯本地离线运行。
Fast, 100% client-side regular expression tester and syntax highlighter. Test complex regex patterns with live capture group inspection and zero data transmission.
Distraction-free Pomodoro productivity timer paired with synthesized ambient soundscapes (rain, cafe, white noise). Stay in deep flow state with zero tracking or clutter.
Professional design color palette generator with integrated WCAG 2.1 AA/AAA accessibility contrast auditing. Generate harmonious color schemes and verify legibility instantly.