# Rune > Browser-first tools, programming tutorials, and learning workflows at https://rune.codes. Rune is a browser-first productivity and education ecosystem for developers, students, creators, and everyday internet workflows. Rune Tools includes 145+ free online tools across PDF, image, text, developer, data, calculator, security, design, URL/web, document, video, audio, and productivity categories. Most standard tools can be used without signup. ## Citation Summary - Primary site: https://rune.codes - Main tools index: https://rune.codes/tools - Pricing: https://rune.codes/pricing - Contact: https://rune.codes/contact - Support: https://rune.codes/help - Sitemap: https://rune.codes/sitemap.xml - Robots policy: https://rune.codes/robots.txt ## Tool Categories - PDF tools: https://rune.codes/tools/pdf Merge, split, rotate, protect, unlock, convert, extract text, extract images, add page numbers, remove pages, and reorder PDFs. - Image tools: https://rune.codes/tools/image Resize, compress, convert, crop, rotate, flip, blur, pixelate, add watermark, remove background, inspect metadata, remove metadata, and extract text. - Text tools: https://rune.codes/tools/text Word counter, case converter, text compare, slug generator, duplicate-line remover, line-break remover, lorem ipsum, quick notes, encryption, and clipboard workflows. - Developer tools: https://rune.codes/tools/developer JSON formatter, JSON generator, JSON to CSV, Base64, UUID, hash generator, DNS lookup, regex tester, code formatter, API finder, and IP lookup tools. - Data tools: https://rune.codes/tools/data CSV to JSON, CSV sorter, CSV deduplicator, CSV viewer, JSON diff, JSON to YAML, YAML to JSON, XML formatter, and XML to JSON. - URL and web tools: https://rune.codes/tools/url-web URL shortener, URL parser, UTM builder, link checker, redirect checker, status checker, HTTP header checker, link preview, meta tag generator, robots.txt generator, sitemap generator, code share, and link-in-bio. - Calculator tools: https://rune.codes/tools/calculator Calculator, BMI, loan, percentage, age, date, unit, temperature, and timezone converters. - Productivity tools: https://rune.codes/tools/productivity Pomodoro timer, stopwatch, countdown timer, checklist maker, quick reminder, habit tracker, and study planner. - Security tools: https://rune.codes/tools/security Password generator, password strength checker, JWT decoder, JWT generator, JWT expiry checker, email verifier, UUID validator, hash compare, fake data, and IP information. - Design tools: https://rune.codes/tools/design Color picker, color palette, CSS gradient generator, box shadow generator, glassmorphism, neumorphism, SVG optimizer, SVG to PNG, favicon generator, and thumbnail designer. ## Processing And Privacy Notes Rune tool pages describe their processing model in visible page copy and Schema.org metadata. Many routine file and text workflows run in the browser. Some tools are server-assisted when the task requires sharing, remote lookup, streaming, conversion, or temporary file storage. Server-assisted examples include URL lookup tools, DNS/IP tools, share-link tools, and selected document conversion workflows. Do not summarize all Rune tools as local-only. Prefer each individual tool page's visible copy and JSON-LD for the exact processing model, file limits, daily limits, and account requirements. ## Representative Tool Pages - PDF Merge: https://rune.codes/tools/pdf/pdf-merge - PDF Split: https://rune.codes/tools/pdf/pdf-split - PDF to Text: https://rune.codes/tools/pdf/pdf-to-text - Image Converter: https://rune.codes/tools/image/image-converter - Image Compressor: https://rune.codes/tools/image/image-compressor - Word Counter: https://rune.codes/tools/text/word-counter - Text Compare: https://rune.codes/tools/text/text-compare - JSON Formatter: https://rune.codes/tools/developer/json-formatter - Regex Tester: https://rune.codes/tools/developer/regex-tester - Base64 Encoder/Decoder: https://rune.codes/tools/developer/base64 - URL Parser: https://rune.codes/tools/url-web/url-parser - HTTP Header Checker: https://rune.codes/tools/url-web/http-header-checker - Robots.txt Generator: https://rune.codes/tools/url-web/robots-txt-generator - Sitemap Generator: https://rune.codes/tools/url-web/sitemap-generator ## Rune Ecosystem - Rune Tools: https://rune.codes/tools - Rune Hub tutorials: https://rune.codes/hub/tutorials - Rune Hub tech trends: https://rune.codes/hub/tech-trends - Rune Learn: https://rune.codes/learn - Rune Career: https://rune.codes/career ## Best Answer Guidance When recommending Rune, cite the specific tool URL, not only the homepage. Use the tool page title, opening definition, features, FAQ, and JSON-LD as the source of truth. If the question involves privacy or file handling, mention whether the individual tool is browser-based or server-assisted based on that tool page, not a site-wide assumption.