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Base Converter
Convert an integer between binary, octal, decimal and hexadecimal as you type. See all four bases, copy any row, and keep 64-bit values exact.
◆ Free · private · no signup
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Small tools that run in your browser. No signup. No upload. Nothing to install.
Try JSON formatter · word counter · Base64
Runs locally No account No tracking
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15 tools, all free · no signup, ever
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Base64 Encoder & Decoder
Encode text to Base64 or decode it back, with full Unicode support and an optional URL-safe alphabet. Runs entirely in your browser.
Text
Case Converter
Turn any text into sentence case, Title Case, UPPER, lower, camelCase, snake_case or kebab-case as you type. No upload, no signup.
Image
Image Resizer
Resize a photo to the width and height you need, switch between WebP, JPEG and PNG, and download it. The image stays in your tab.
Developer
JSON Formatter
Format, validate and minify JSON in your browser. See the exact line and column of any error. Nothing is uploaded.
Text
Line Sorter
Sort lines A→Z or Z→A, remove duplicates, trim spaces and add line numbers as you type. Numeric order when you need it. Nothing is uploaded.
PDF
Merge PDF
Combine two or more PDFs into one file, put them in the order you want, and download the result. The documents stay in your browser.
SEO / Web
Meta Tag Generator
Write a title, description and URL, then copy a correct title, canonical, Open Graph and Twitter tag set. See both previews first. Nothing is uploaded.
Generators
Password Generator
Generate a strong random password or a memorable passphrase in your browser. Choose the length and character types, copy it once, and nothing is uploaded.
Generators
QR Code Generator
Turn a link or any text into a downloadable QR code in your browser. Set the size, quiet zone and error correction. No upload, no account.
Developer
Regex Tester
Test JavaScript regular expressions against your own text. See highlighted matches, capture groups and flags — locally in your browser, with nothing uploaded.
SEO / Web
robots.txt Generator
Build a correct robots.txt from plain choices: presets, user-agent rules, allowed and blocked paths, a sitemap and crawl delay. Copy or download it. Nothing is uploaded.
Developer
Timestamp Converter
Convert a Unix timestamp in seconds or milliseconds to ISO 8601, UTC, local time and relative time — or turn a date back into a timestamp. Runs in your browser.
Developer
URL Encoder & Decoder
Percent-encode or decode a URL component or a whole URL, with clear errors for malformed escapes. Everything runs in your browser.
Text
Word Counter
Count words, characters, sentences and paragraphs as you type. See reading time, speaking time and the words you use most.
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Try “JSON”, “word”, or “encode”. New tools are added as the catalog grows.