Free developer tools.

Count words, characters, sentences, and paragraphs.

Convert text to UPPER, lower, Title, camelCase, snake_case, and more.

Generate placeholder text in paragraphs, sentences, or words.

Compare two texts and see the differences highlighted.

Write Markdown and see the rendered HTML output in real time.

Convert titles and text into SEO-friendly URL slugs.

Convert between HEX, RGB, HSL, and CMYK. Pick a color to start.

Generate color palettes from a base color. Shades, tints, and complements.

Build CSS gradients visually. Linear and radial. Copy the CSS.

Format, minify, and validate JSON. Catch errors instantly.

Encode text to Base64 or decode Base64 back to text.

Encode or decode URLs and query strings. Handle special characters.

Encode or decode HTML entities. Prevent XSS, display special characters.

Test regular expressions with real-time matching and highlighting.

Decode JSON Web Tokens to inspect header, payload, and signature.

Query JSON with simple dot/bracket paths and preview the extracted value.

Escape or unescape strings for JSON, JavaScript, HTML, URLs, and regex.

Convert length, weight, temperature, volume, and more.

Convert Unix timestamps to human-readable dates and vice versa.

Convert between binary, octal, decimal, and hexadecimal.

Paste CSV data and convert it to a JSON array instantly.

Convert a JSON array of objects into downloadable CSV.

Convert CSV data into a clean Markdown table.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.

Generate UUID v4 tokens. One or many at once.

Generate strong random passwords with custom length and character sets.

Generate unique usernames with styles, keywords, numbers, and availability-friendly variants.

Generate brandable business, startup, product, and project names from keywords.

Generate social media hashtags from topics, keywords, and captions.

Generate robots.txt rules for crawlers, sitemaps, disallowed paths, and crawl delay.

Generate .gitignore files for popular languages, frameworks, editors, and operating systems.

Create QR codes for URLs, text, email, phone, SMS, and Wi-Fi.

Compress JPG, PNG, and WebP images in your browser.

Resize images by width, height, percentage, or preset sizes.

Convert images between PNG, JPG, and WebP locally in your browser.

Crop images by dragging a crop box or using common aspect ratios.

Generate favicon PNG sizes and an HTML snippet from one image.

Convert images to Base64 data URLs for CSS, HTML, and APIs.

Decode Base64 image strings and data URLs into downloadable images.

Merge multiple PDF files into one combined PDF in your browser.

Extract selected pages or page ranges from a PDF.

Remove unwanted pages from a PDF and download the cleaned file.

Rotate all pages or selected pages in a PDF by 90, 180, or 270 degrees.

View PDF page count, title, author, subject, creator, producer, and dates.

Paste HTML and audit title, meta description, canonical, robots, viewport, and social tags.

Preview and generate Open Graph and Twitter/X card tags for social sharing.

Preview how a page title, URL, and meta description may look in Google search results.

Test whether a URL path is allowed or blocked by pasted robots.txt rules.

Build campaign tracking URLs with utm_source, utm_medium, utm_campaign, and more.

Calculate percentages, percentage change, and percentage of a number.

Parse cron expressions and see the human-readable schedule.

Calculate age in years, months, days, and total days from a birth date.

Calculate the time between two dates in days, weeks, months, and years.

Estimate monthly payment, total interest, and total cost for a loan.

Project investment growth with contributions, interest rate, and compounding.

Calculate proportional width, height, and common aspect ratios for images and video.