Free Developer Tools
Simple, fast, privacy-first tools for everyday development tasks. No signup, no ads, all processing happens in your browser.
Markdown to HTML
Write Markdown on the left, see rendered HTML on the right. Copy raw HTML or download as a complete file.
Markdown • HTML • PreviewURL Encoder & Decoder
Encode special characters for safe URLs or decode percent-encoded strings back to readable text.
URL • Encode • DecodeBase64 Encoder & Decoder
Convert text to Base64 or decode Base64 back to plain text. Full UTF-8 support including emoji.
Base64 • Encode • DecodeColor Converter
Convert between HEX, RGB, HSL, and CMYK formats. Interactive color picker with live preview.
Color • HEX • RGB • HSLTimestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds.
Unix • Epoch • TimestampUUID Generator
Generate random UUID v4 / GUID identifiers. Batch generation with lowercase, uppercase, or no-dash formats.
UUID • GUID • IdentifierLorem Ipsum Generator
Placeholder text for designs and mockups. Generate paragraphs, sentences, or words with one click.
Lorem Ipsum • Placeholder • TextHTML Entity Encoder & Decoder
Encode special characters to HTML entities or decode entities back to text. Supports all common entities.
HTML • Entities • EncodeCSV to JSON Converter
Convert CSV data to JSON instantly. Auto-detects headers and numeric values. Copy or download output.
CSV • JSON • ConverterImage to Base64
Convert images to Base64 data URIs. Drag & drop JPG, PNG, GIF. Copy as Data URI, <img> tag, or CSS.
Image • Base64 • Data URIPassword Generator
Generate cryptographically secure passwords. Customize length, character types, and exclude similar characters.
Password • Security • GeneratorJSON to CSV Converter
Convert JSON arrays to CSV tables. Universal converter that handles all data types with precision.
JSON • CSV • ConverterWord Counter
Count words, characters, sentences, paragraphs. Get estimated reading and speaking time.
Word Count • Character • TextJSON Formatter & Validator ↗
Format messy JSON instantly with syntax highlighting and error detection. Copy or download cleaned output.
JSON • Format • Validate