Paste text and instantly measure words, characters, sentences, paragraphs, and estimated reading time.
Online tools directory
30 tested browser tools for practical workflows
Search the complete English catalog across everyday and business tasks, developer and data work, and SEO and web production.
Change text casing quickly for headlines, labels, notes, and drafts without uploading your content.
Clean up JSON, make it readable, minify it for transport, and catch syntax errors before you paste it elsewhere.
Generate random passwords in your browser with selectable length and character types.
Encode text to Base64 or decode Base64 back to readable text in your browser.
Create campaign-tagged URLs for GA4, email, social, and paid links while preserving existing query parameters.
Convert common length, weight, and temperature units with clear formulas and instant browser-side results.
Encode text for URL components or decode percent-encoded strings in your browser for links, query parameters, and debugging.
Enter a birth date to calculate exact age and see how long remains until the next birthday.
Calculate business days between two dates with weekends and optional custom holidays excluded.
Convert JSON and a documented basic YAML subset in either direction without uploading the text.
Parse, sort, and validate dotenv assignments while keeping the text in the browser.
Calculate SHA-256 and inspect a local file header without sending the file to a server.
Inspect dimensions, crop risk, and approximate safe margins for common social preview shapes.
Generate srcset and sizes markup from image candidates you already created.
Preview deterministic filename changes and download a mapping without uploading file contents.
Convert an unambiguous local date and time between named IANA zones, inspect daylight-saving offsets, UTC, and date rollover in your browser.
Decode JWT header and payload JSON in your browser. This tool only decodes tokens and does not verify signatures.
Test JavaScript RegExp patterns against text in your browser with match count, indexes, syntax errors, and input length limits.
Parse and explain common 5-field cron expressions with validation for ranges, lists, steps, and unsupported scheduler-specific syntax.
Preview a Google-style search result with title, URL, and meta description checks for length, clarity, and truncation risk.
Generate Open Graph and Twitter Card meta tags from manually entered fields without fetching live pages.
Generate a robots.txt draft from manual user-agent, allow, disallow, sitemap, and crawl-delay settings.
Generate a basic sitemap.xml file from URLs you paste manually. This tool does not crawl or submit your website.
Generate a conservative CSS clamp() formula for responsive font-size values from min and max viewport settings.
Check foreground and background color contrast ratios with WCAG AA and AAA reference results.
Compare two JSON values and list added, removed, changed, and unchanged paths after validating the JSON input.
Calculate profit, profit margin, and markup from cost and selling price for simple business math planning.
Calculate sale price and savings from an original price and percentage or fixed discount.
Parse a URL into protocol, hostname, port, path, query parameters, and hash locally in your browser.
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FAQ
Common questions
Is this tool free?
Yes. The current release is free to use.
Does this tool upload my input?
No. The tool is designed to process input locally in your browser.
Can I use it on mobile?
Yes. The layout is designed to work on desktop and mobile browsers.