Tiny tools.
Big productivity.
A clean collection of free browser tools for developers, writers, and creators. No accounts. No ads. No data collected.
Text & Writing
4 toolsWord Counter
Count words, characters, sentences, paragraphs, and reading time instantly.
Open ToolCharacter Counter
Count characters with and without spaces. Check platform limits for Twitter, Instagram & more.
Open ToolReading Time Calculator
Calculate how long it takes to read any text. Perfect for bloggers and content creators.
Open ToolNewLorem Ipsum Generator
Generate placeholder text in paragraphs, sentences, or words for your designs and mockups.
Open ToolImage & File
5 toolsImage to WebP
Convert JPG, PNG, and GIF images to WebP format for faster websites.
Open ToolWebP to PNG
Convert WebP images to PNG format with full transparency support.
Open ToolWebP to JPG
Convert WebP images to JPG format quickly and easily.
Open ToolJPG to PNG
Convert JPG/JPEG images to PNG format with lossless quality.
Open ToolImage Compressor
Compress images to reduce file size while maintaining quality.
Open ToolDeveloper
10 toolsJSON Formatter
Format, beautify, minify, and validate JSON data instantly.
Open ToolBase64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings back to plain text.
Open ToolNewURL Encoder/Decoder
Encode or decode URLs and query parameters. Handle special characters safely.
Open ToolNewColor Converter
Convert colors between HEX, RGB, and HSL formats. Pick colors visually.
Open ToolNewRegex Tester
Test and debug regular expressions with real-time matching, highlighting, and group extraction.
Open ToolCSS Minifier
Minify CSS code to reduce file size. Remove comments, whitespace, and unnecessary characters.
Open ToolHTML Minifier
Minify HTML by removing comments, whitespace, and unnecessary tags.
Open ToolNewTimestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Multiple format outputs.
Open ToolNewQR Code Generator
Generate QR codes for URLs, text, WiFi, and more. Download as PNG.
Open ToolMarkdown to HTML
Convert Markdown text to clean HTML. Live preview and copy-ready HTML output.
Open ToolSEO
2 toolsSecurity
2 toolsAbout 3STF Tools
3STF Tools is built by developers, for developers and creators. Every tool runs entirely in your browser — no uploads to servers, no data stored, no tracking. Fast, private, and always free. We believe the best tools are the ones that respect your privacy and just work.