Text & Writing

Translate between plain text and 6-dot Unicode braille with ASCII braille, dot notation, and character lookup

Convert text case: upper, lower, camelCase, snake_case & more

Auto-insert or remove spaces between CJK and Latin/digit characters following pangu typography convention

Convert plain text into 26 Unicode fancy font styles: bold, italic, script, fraktur, double-struck, monospace, small caps, fullwidth, circled, squared, upside-down, mirror, strikethrough, underline, overline, and Zalgo. Includes 10 bio decorator presets for Instagram, TikTok, Xiaohongshu, WeChat, and gaming IDs. Local — no upload, no server.

Convert between fullwidth and halfwidth characters with selective category control, CJK punctuation mapping, and Chinese typography preset

Normalize line break styles and clean abnormal blank lines for cross-platform processing.

Join multiple lines into one with custom delimiters, per-line trimming, empty line removal, and prefix/suffix wrapping with quick-apply presets.

Add line numbers to text with customizable format, start, step, alignment, and empty line handling

Detect and remove duplicate lines with options for stable order and blank line handling.

Convert titles into URL friendly slugs with configurable case and separator rules.

Browser-local subtitle format converter: SRT ↔ VTT lossless bidirectional conversion + ASS/SSA text extraction to SRT/VTT/plain text. Complete encoding auto-detection (UTF-8 BOM / UTF-16 / GB18030 / GBK / Big5 / Shift-JIS / Windows-1252 with byte-pattern scoring + TextDecoder fatal verification) with manual override dropdown. Strict ASS drawing-command stripping (`{\p1}…{\p0}` path commands never leak into SRT text) + correct BGR→RGB color byte swap (fixes a bug pervasive across competitors). Four-mode ASS override-tag handling (strip / preserve as HTML / map to VTT cue settings / normalize as style blocks), proper \N/\n/\h handling per WrapStyle. Line-level error diagnostics ("line 42: invalid timecode") + syntax-highlighted preview (colored timecodes / red invalid lines / yellow overlap bands) + click-to-locate warning panel. Time offset (±seconds / ±milliseconds) + FPS conversion (23.976/24/25/29.97/30 + drop-frame 29.97/59.94) + timecode format switching (SMPTE / ms / seconds / Chinese "1 min 23.456 sec"). Auto-fix pipeline: drop 0ms / empty cues / merge consecutive duplicates / repair numbering / fill missing blank lines / strip out-of-bounds `<font>` / swap reversed times. Four input channels: file upload / paste textarea / drag-drop / clipboard read (mobile-friendly). Lossy-diff preview card (shows dropped karaoke / drawings / regions / precision reduction before download). Mobile-native cue list + 44px touch targets + dark mode + keyboard shortcuts (Ctrl+O/S/C + J/K + Esc) + bilingual aria-live announcements. Zero dependencies, pure client-side, files are not uploaded by the tool.

Extract emails, URLs, IPs, phones, dates, hashes and more from free-form text — 15 types at once with line numbers, context highlighting, and custom regex

Visual rule-stack text line filter with 10 rule types (contains / not-contains / starts-with / ends-with / whole-word / regex / regex-not / length / line-number / character-set), global AND/OR, per-rule invert and case. Eight bilingual presets (Email / URL / IPv4 / Log ERROR / remove comments / stack frames / Chinese ID / China mobile). Post-processing includes trim, 4-mode deduplication, and 9 sort modes. Three views (kept / excluded / side-by-side diff) plus real-time 4-stage stats deltas with original line numbers. 5 MB UTF-8 byte hard cap, 3-second cumulative budget across chunks for multi-line / multi-rule runs (single-line ReDoS mitigated via heuristic warning chip), runToken cascade cancellation. Local — no upload, no login, 44px mobile touch targets.

Reverse text by character, word, line, or sentence — Unicode-safe

Randomly shuffle text by line, word, character, or sentence — Unicode-safe

Trim text by characters, words, or lines with optional ellipsis markers.

Convert plain text into title case with optional small-word preservation rules.

Convert between Simplified and Traditional Chinese with Taiwan/HK variants and phrase disambiguation

Hide secret messages in visible text using zero-width Unicode characters with encode, decode, and detect modes plus visual character map

Count character, letter, or word frequency with percentage, sorting, filters, and Shannon entropy

Full Unicode 15.1 reference: 1949 base emoji + 2030 skin-tone variants + 249 ZWJ sequences across 10 groups and 100 sub-groups. Five-route search (Chinese name / pinyin / English / shortcode / U+ code point) with skin-tone picker, ZWJ composer, multi-select basket, and 8 escape formats (U+ / HTML decimal / HTML hex / URL / JS / CSS / Python / Ruby). Flag country names in both languages, local favorites / recent / frequency memory, browser-side after page load.

Generate placeholder text by paragraph and word count for prototyping and layout testing.

Estimate article reading time from word count and reading speed for better content pacing.

1600+ curated Unicode symbols across 15 categories: box drawing, dingbats, arrows, math, geometric, musical, enclosed alphanumerics, Chinese-specific, and more. Bilingual + pinyin search with one-click copy

Browser-local word cloud generator: smart CJK + Latin tokenization, 5 shapes, 8 WCAG-AA palettes, 4 rotation presets, Shuffle with visible reproducible seed. Quad export PNG (2× Retina) / SVG vector / JSON + CSV all derived from the same placements. Custom stopwords + 'preserve phrases' userdict (lightweight jieba substitute). Keyboard shortcuts, dark mode, mobile 44px touch, screen-reader top-20 aria label. Zero login, zero watermark, zero usage caps.

Count characters, words, sentences & paragraphs

Edit Markdown locally, preview it live, and export MD or HTML.

Live Markdown to HTML preview in your browser

Compare two texts line by line with diff highlighting

Measure keyword frequency and ratio to evaluate topical density in content quickly.