Convert TTF/OTF fonts to WOFF2 and subset to only used characters (Latin, Cyrillic, etc.). Generates @font-face CSS blocks. Cuts font files from MBs to KBs. Everything runs locally in your browser — nothing is uploaded.
Convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once.
Removes unnecessary whitespace, comments, and trailing semicolons from CSS, while merging identical selector blocks where safe to do so.
Convert 100+ Markdown files into beautifully styled PDFs or static HTML with custom CSS, auto-generated table of contents, and corporate templates.
Convert fonts between TTF, OTF, WOFF, and WOFF2 formats. Preview fonts with custom text before downloading. Perfect for web developers and designers.
Reduce font file size by removing unused glyphs. Keep only the characters you need. Perfect for web fonts and performance optimization.
Bulk Font Subsetter lets you convert TTF/OTF fonts to WOFF2 and subset to only used characters (Latin, Cyrillic, etc.). Generates @font-face CSS blocks. Cuts font files from MBs to KBs. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Convert TTF/OTF fonts to WOFF2 and subset to only used characters (Latin, Cyrillic, etc.). Generates @font-face CSS blocks. Cuts font files from MBs to KBs. Everything runs locally in your browser — nothing is uploaded. It's ideal for developers, designers, and anyone who needs to convert ttf/otf fonts to woff2 and subset to only used characters (latin, cyrillic, etc without installing software or sending data to external servers.
Direct text entry, file upload, or URL-based input — depending on the tool. Common file formats are supported for upload-based tools.
Yes. After the initial page load, Bulk Font Subsetter runs entirely on your device with no internet connection needed. All processing is done locally.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check individual tool descriptions for specifics.
No. All code processing — formatting, minification, conversion, hashing — runs locally in your browser.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. SQL uses sql-formatter, JSON uses native JSON.parse, and other formatters follow widely adopted formatting rules.
Yes. All developer tools work fully offline after the initial page load.
Time Converter
Convert between time units including seconds, minutes, hours, days, weeks, months, and years with precise decimal results.
Diff Checker
Compares two input texts side-by-side, highlighting inserted, deleted, and changed lines with distinct background colors.
Regex Tester
Provides an interactive environment where users can write a regular expression pattern, test it against sample strings, and view real-time match.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.
JS Minifier
Strips comments, whitespace, and shortens local variable names in JavaScript source without altering execution semantics.
Base64 Encode/Decode
Encodes text or small files into Base64 strings and decodes them back with automatic MIME-type detection for binary safety.