# GigaTools > 225 free online tools for PDFs, images, text, code, calculations and websites. No sign-up; most tools run in the browser so files stay on the device. ## PDF tools - [Merge PDF](https://gigatools.site/tools/merge-pdf): Combine several PDF files into one document, in exactly the order you choose. - [Split PDF](https://gigatools.site/tools/split-pdf): Split a PDF into separate files by page range, or break it into single pages. - [Compress PDF](https://gigatools.site/tools/compress-pdf): Shrink PDF file size for email and uploads while keeping text sharp and images readable. - [PDF to Word](https://gigatools.site/tools/pdf-to-word): Convert a PDF into an editable Word document (DOCX) that keeps its layout and formatting. - [Word to PDF](https://gigatools.site/tools/word-to-pdf): Convert DOC and DOCX documents to PDF with fonts, tables and layout preserved. - [Excel to PDF](https://gigatools.site/tools/excel-to-pdf): Turn XLS, XLSX and CSV spreadsheets into clean, printable PDF files. - [PowerPoint to PDF](https://gigatools.site/tools/powerpoint-to-pdf): Convert PPT and PPTX presentations to PDF so slides look the same everywhere. - [PDF to JPG](https://gigatools.site/tools/pdf-to-jpg): Turn each page of a PDF into a high-quality JPG image. - [PDF to PNG](https://gigatools.site/tools/pdf-to-png): Export PDF pages as lossless PNG images with crisp text. - [JPG to PDF](https://gigatools.site/tools/jpg-to-pdf): Convert JPG, PNG and WebP images into a single PDF, one image per page. - [Rotate PDF](https://gigatools.site/tools/rotate-pdf): Rotate every page, or just the pages you pick, and save the corrected PDF. - [Organize PDF](https://gigatools.site/tools/organize-pdf): Reorder, rotate and delete PDF pages visually with page thumbnails. - [Delete PDF Pages](https://gigatools.site/tools/remove-pdf-pages): Remove unwanted pages from a PDF and download the cleaned-up file. - [Extract PDF Pages](https://gigatools.site/tools/extract-pdf-pages): Pull selected pages out of a PDF into a new, smaller document. - [Add Page Numbers](https://gigatools.site/tools/add-page-numbers-to-pdf): Number the pages of a PDF, choosing position, starting number and format. - [Watermark PDF](https://gigatools.site/tools/watermark-pdf): Stamp text such as CONFIDENTIAL or DRAFT across the pages of a PDF. - [Protect PDF](https://gigatools.site/tools/protect-pdf): Add a password to a PDF with strong AES-256 encryption. - [Unlock PDF](https://gigatools.site/tools/unlock-pdf): Remove the password from a PDF you are allowed to open. - [PDF to Text](https://gigatools.site/tools/pdf-to-text): Extract the plain text from a PDF to copy, search or reuse. ## Image tools - [AVIF to JPG](https://gigatools.site/tools/avif-to-jpg): Convert AVIF images to JPG in batches, choose quality and a transparency background, and download files or a ZIP without uploading photos. - [Watermark Image](https://gigatools.site/tools/watermark-image): Add a text or logo watermark to photos in batches. Preview position, opacity and a repeated pattern, then save PNG or JPG files locally. - [Image Compressor](https://gigatools.site/tools/image-compressor): Make JPG, PNG and WebP images smaller with a live preview of quality and size. - [Image Resizer](https://gigatools.site/tools/image-resizer): Resize images by pixels or percentage, keeping the aspect ratio if you like. - [Image Converter](https://gigatools.site/tools/image-converter): Convert images between JPG, PNG and WebP formats in seconds. - [PNG to JPG](https://gigatools.site/tools/png-to-jpg): Convert PNG images to JPG, with a background colour for transparent areas. - [JPG to PNG](https://gigatools.site/tools/jpg-to-png): Convert JPG photos to lossless PNG images. - [WebP to JPG](https://gigatools.site/tools/webp-to-jpg): Convert WebP images to widely supported JPG files. - [Image to WebP](https://gigatools.site/tools/png-to-webp): Convert PNG or JPG images to modern, lightweight WebP files. - [HEIC to JPG](https://gigatools.site/tools/heic-to-jpg): Convert iPhone HEIC photos to JPG so they open anywhere. - [Crop Image](https://gigatools.site/tools/crop-image): Crop an image freely or to a fixed aspect ratio such as 1:1 or 16:9. - [Rotate & Flip Image](https://gigatools.site/tools/rotate-image): Rotate an image in 90° steps or flip it horizontally and vertically. - [Image to Text (OCR)](https://gigatools.site/tools/image-to-text): Extract text from screenshots, photos and scanned documents. - [Image to Base64](https://gigatools.site/tools/image-to-base64): Encode an image as a Base64 data URI for CSS, HTML or JSON. - [Favicon Generator](https://gigatools.site/tools/favicon-generator): Create favicon PNGs in every common size, plus the HTML tags to use them. - [SVG to PNG](https://gigatools.site/tools/svg-to-png): Render an SVG file to a PNG image at the size you need. - [PNG to ICO](https://gigatools.site/tools/png-to-ico): Convert PNG, JPG or WebP images into a real ICO file with multiple icon sizes and transparent padding. - [Blur Image](https://gigatools.site/tools/blur-image): Blur a whole image or a selected rectangle with adjustable strength, then save the result as PNG. - [Compress Image to KB](https://gigatools.site/tools/compress-image-to-kb): Reduce JPG, PNG or WebP images below a chosen file-size limit, with measured output sizes. - [Resize Image in CM](https://gigatools.site/tools/resize-image-in-cm): Set centimetres and DPI to calculate pixel dimensions, then resize without stretching. - [Image Size Checker](https://gigatools.site/tools/image-size-checker): Check image dimensions, file size and format against your upload requirements. - [Signature Resizer](https://gigatools.site/tools/signature-resizer): Fit a signature into exact pixel dimensions and a maximum JPG file size. - [Contact Sheet Maker](https://gigatools.site/tools/contact-sheet-maker): Arrange up to 12 photos into one JPG grid with optional filename captions. - [WebP to PNG Converter](https://gigatools.site/tools/webp-to-png): Convert WebP images to PNG, keep transparent areas and download a batch as a ZIP. - [HEIC to PNG Converter](https://gigatools.site/tools/heic-to-png): Turn HEIC or HEIF photos into PNG files in your browser, one photo or a whole batch. - [Meme Generator](https://gigatools.site/tools/meme-generator): Add classic top and bottom captions to your own picture and download the meme as a PNG. - [Image Color Extractor](https://gigatools.site/tools/image-color-extractor): Pull the main colours from any image and copy them as hex codes or CSS variables. ## SEO tools - [Backlink Maker](https://gigatools.site/tools/backlink-maker): Create a ready-to-use HTML link snippet. - [XML Sitemap Generator](https://gigatools.site/tools/xml-sitemap-generator): Turn a list of URLs into a valid XML sitemap. - [XML Sitemap Validator](https://gigatools.site/tools/xml-sitemap-validator): Validate sitemap XML, count URLs, and spot malformed or unsafe entries. - [Link Analyzer](https://gigatools.site/tools/link-analyzer): Inspect links from pasted HTML and classify them. - [Keyword CPC Calculator](https://gigatools.site/tools/keyword-cpc-calculator): Estimate campaign cost from clicks and CPC. - [Keyword Search Review](https://gigatools.site/tools/keyword-position-checker): See a best-effort domain match in DuckDuckGo results; open Google and Bing searches for manual review. No rank history is tracked. - [Backlink Report Parser](https://gigatools.site/tools/backlink-checker): Organize URLs or anchor links copied from a backlink report; this tool does not discover or verify backlinks. - [Google PageSpeed Insights Checker](https://gigatools.site/tools/pagespeed-insights-checker): Run a mobile PageSpeed performance audit for a public URL. - [Safe Browsing Review](https://gigatools.site/tools/google-malware-checker): Check the HTTPS response and open Google’s public Safe Browsing lookup. GigaTools does not query its malware database. - [Website Setup Signals](https://gigatools.site/tools/mozrank-checker): Review DNS, HTTPS, response time, metadata, robots.txt, and sitemap signals. This is not MozRank or a link-authority score. - [SEO Meta Title Drafts](https://gigatools.site/tools/ai-seo-meta-title-generator): Create editable title drafts from a topic and optional keywords. - [SEO Meta Description Drafts](https://gigatools.site/tools/ai-seo-meta-description-generator): Create editable description drafts from a topic and optional keywords. - [Site Search Preview](https://gigatools.site/tools/google-index-checker): Open Google and Bing site: queries for a rough public signal; confirm your own URLs in Search Console. - [Blacklist Lookup](https://gigatools.site/tools/blacklist-lookup): Prepare a domain for reputation-list review. - [Link Price Calculator](https://gigatools.site/tools/link-price-calculator): Estimate a sponsored link price from reach inputs. - [Wayback Snapshot Lookup](https://gigatools.site/tools/google-cache-checker): Find an available Internet Archive snapshot. Google’s cached-page feature is no longer available. - [Search Engine Spider Simulator](https://gigatools.site/tools/search-engine-spider-simulator): Preview the text a basic crawler can read from HTML. - [Keywords Suggestion Tool](https://gigatools.site/tools/keywords-suggestion-tool): Expand a seed keyword into useful variations. - [Domain Setup Signals](https://gigatools.site/tools/domain-authority-checker): Review public DNS, HTTPS, response, metadata, robots.txt, and sitemap signals; no Domain Authority score is queried. - [URL Setup Signals](https://gigatools.site/tools/page-authority-checker): Review public website setup signals for a URL; this tool does not query Page Authority or a link index. - [Page Speed Checker](https://gigatools.site/tools/page-speed-checker): Open a performance audit for a public URL. - [Website Launch Audit](https://gigatools.site/tools/website-launch-audit): Check the public signals that shape a confident website launch. - [SERP Snippet Preview](https://gigatools.site/tools/serp-preview): Preview how a page may look in Google results. - [Open Graph Generator](https://gigatools.site/tools/open-graph-generator): Generate Open Graph and Twitter card tags. - [UTM Link Builder](https://gigatools.site/tools/utm-link-builder): Build campaign URLs with UTM parameters. - [HTTP Response Header Parser](https://gigatools.site/tools/http-response-header-parser): Read pasted HTTP response blocks, preserve repeated fields and review status, Location and X-Robots-Tag without fetching a website. - [Open Graph Checker](https://gigatools.site/tools/open-graph-checker): Check Open Graph properties in pasted HTML and preview the title and description without fetching pages or images. - [Hreflang Checker](https://gigatools.site/tools/hreflang-checker): Inspect pasted HTML hreflang annotations for code syntax, duplicate languages, absolute URLs and self-reference. - [Redirect Map Checker](https://gigatools.site/tools/redirect-map-checker): Find chains, loops and duplicate sources in a two-column redirect CSV before a migration, entirely in your browser. - [Robots.txt Tester](https://gigatools.site/tools/robots-txt-tester): Test pasted Allow and Disallow rules against crawler tokens and URL paths, with winning rule lines and no live website requests. - [XML Sitemap Splitter](https://gigatools.site/tools/xml-sitemap-splitter): Split a pasted or local XML urlset into child sitemaps and an index while preserving entry metadata. - [Image Alt Text Checker](https://gigatools.site/tools/image-alt-text-checker): Inspect image alt attributes in pasted HTML, separating missing descriptions from empty alt text that needs contextual review. - [Robots Meta Tag Checker](https://gigatools.site/tools/robots-meta-tag-checker): Inspect robots, googlebot and googlebot-news meta directives in pasted HTML and flag restrictive indexing instructions. - [Sitemap Comparison Tool](https://gigatools.site/tools/sitemap-comparison-tool): Compare two pasted XML sitemaps to find added, removed and common URLs with optional path-only matching. - [Article Schema Generator](https://gigatools.site/tools/article-schema-generator): Create Article, BlogPosting or NewsArticle JSON-LD from your actual article details. - [Hreflang Tag Generator](https://gigatools.site/tools/hreflang-tag-generator): Generate alternate-language link tags from language codes and page URLs. - [Canonical Tag Checker](https://gigatools.site/tools/canonical-tag-checker): Inspect canonical tags in pasted HTML for duplicates, relative URLs and page mismatches. - [JSON-LD Validator](https://gigatools.site/tools/json-ld-validator): Check JSON-LD syntax and inspect structured-data types in JSON or pasted HTML. - [Local Business Schema Generator](https://gigatools.site/tools/local-business-schema-generator): Build LocalBusiness JSON-LD with your business name, website and postal address. - [Breadcrumb Schema Generator](https://gigatools.site/tools/breadcrumb-schema-generator): Generate BreadcrumbList JSON-LD from an ordered list of page names and URLs. - [FAQ Schema Generator](https://gigatools.site/tools/faq-schema-generator): Turn the questions and answers on your page into FAQPage JSON-LD structured data, ready to paste. - [Product Schema Generator](https://gigatools.site/tools/product-schema-generator): Create Product JSON-LD with price, availability, brand and GTIN for a product page. - [Schema Markup Generator](https://gigatools.site/tools/schema-markup-generator): Generate JSON-LD for products, organizations, people, websites and events from a simple form. - [llms.txt Generator](https://gigatools.site/tools/llms-txt-generator): Create an llms.txt file that points AI assistants to a summary of your site and its key pages. - [Google Review Link Generator](https://gigatools.site/tools/google-review-link-generator): Turn your Google Place ID into a direct review link and a ready-to-paste HTML link. - [Sitemap URL Extractor](https://gigatools.site/tools/sitemap-url-extractor): Extract unique page or sitemap URLs from sitemap XML into a plain-text list. - [Robots Meta Tag Generator](https://gigatools.site/tools/robots-meta-tag-generator): Create robots meta and X-Robots-Tag directives for a generic crawler or Googlebot. - [Broken Link Checker](https://gigatools.site/tools/broken-link-checker): Test links from a public webpage and find missing destinations, redirects and checks that need review. ## Content tools - [Meta Tag Generator](https://gigatools.site/tools/meta-tag-generator): Draft an accurate page title and meta description for a specific page. - [Meta Tags Analyzer](https://gigatools.site/tools/meta-tags-analyzer): Inspect the essential metadata in pasted HTML. - [Word Counter](https://gigatools.site/tools/word-counter): Count words, characters, sentences, and reading time. - [Keyword Density Checker](https://gigatools.site/tools/keyword-density-checker): Measure how often a keyword appears in your text. - [Heading Structure Validator](https://gigatools.site/tools/heading-structure-validator): Review heading order and spot skipped levels. - [Emojis Remover](https://gigatools.site/tools/emoji-remover): Remove emoji characters from a text block. - [Plagiarism Checker](https://gigatools.site/tools/plagiarism-checker): Compare text against a supplied reference passage. - [YouTube Keywords Extractor](https://gigatools.site/tools/youtube-keywords-extractor): Extract hashtag-like keywords from pasted video text. - [Keyword List Grouper](https://gigatools.site/tools/ai-keyword-cluster-ideas): Group a supplied keyword list by its first word; this is a simple sorting aid, not semantic clustering. ## Text tools - [Quick Text Cleaner](https://gigatools.site/tools/article-rewriter): Tidy spacing and replace a few verbose phrases in a short passage. - [Text Case Converter](https://gigatools.site/tools/text-case-converter): Switch text between upper, title, camel and more. - [Slug Generator](https://gigatools.site/tools/slug-generator): Turn a title into a clean URL slug. - [Remove Duplicate Lines](https://gigatools.site/tools/remove-duplicate-lines): Delete repeated lines from a list. - [Text Sorter](https://gigatools.site/tools/text-sorter): Sort lines alphabetically, naturally, or by length. - [Lorem Ipsum Generator](https://gigatools.site/tools/lorem-ipsum-generator): Generate placeholder paragraphs, sentences, or words. - [Word Frequency Counter](https://gigatools.site/tools/word-frequency-counter): Count how often each word appears in text. - [Remove Line Breaks](https://gigatools.site/tools/remove-line-breaks): Remove unwanted line breaks from copied text while optionally keeping blank-line paragraph breaks. - [Remove Extra Spaces](https://gigatools.site/tools/remove-extra-spaces): Clean repeated spaces and tabs while preserving line breaks or converting text to one line. - [Email Extractor](https://gigatools.site/tools/email-extractor): Extract common email addresses from pasted text, remove exact duplicates and copy a clean list. - [HTML to Text Converter](https://gigatools.site/tools/html-to-text-converter): Convert pasted HTML to plain text with paragraphs and lists, without loading scripts or images. - [Diff Checker](https://gigatools.site/tools/diff-checker): Compare two texts side by side and highlight every added and removed line. - [Find and Replace](https://gigatools.site/tools/find-and-replace): Find and replace words or patterns across a block of text, with optional regex. ## Developer tools - [JSON Formatter & Validator](https://gigatools.site/tools/json-formatter): Validate, pretty-print, or minify JSON. - [Base64 Encoder / Decoder](https://gigatools.site/tools/base64-encoder-decoder): Encode text to Base64 or decode it back. - [Hash Generator](https://gigatools.site/tools/hash-generator): Create MD5, SHA-1, SHA-256 and SHA-512 digests. - [UUID Generator](https://gigatools.site/tools/uuid-generator): Generate random RFC 4122 version 4 UUIDs. - [JWT Decoder](https://gigatools.site/tools/jwt-decoder): Decode a JSON Web Token header and payload. - [Regex Tester](https://gigatools.site/tools/regex-tester): Test a regular expression against sample text. - [Timestamp Converter](https://gigatools.site/tools/timestamp-converter): Convert Unix timestamps to dates and back. - [URL Parser](https://gigatools.site/tools/url-parser): Break a URL into its components and parameters. - [HTML Table to CSV Converter](https://gigatools.site/tools/html-table-to-csv): Extract a selected HTML table into quoted CSV, expand merged cells and protect spreadsheet formula values without uploading your data. - [HTML Entity Encoder / Decoder](https://gigatools.site/tools/html-entity-encoder-decoder): Escape HTML special characters or decode named and numeric character references in your browser. - [CSV to JSON](https://gigatools.site/tools/csv-to-json): Convert CSV data into a JSON array of objects using the header row as keys. - [JSON to CSV](https://gigatools.site/tools/json-to-csv): Convert a JSON array of objects into a CSV you can open in any spreadsheet. - [Markdown to HTML](https://gigatools.site/tools/markdown-to-html): Convert Markdown into clean HTML with a live preview. - [XML Formatter](https://gigatools.site/tools/xml-formatter): Format and validate XML with readable indentation while preserving mixed text and significant whitespace. - [cURL Command Generator](https://gigatools.site/tools/curl-command-generator): Build a shell-safe cURL command from a URL, method, headers and optional body. - [Binary to Text Converter](https://gigatools.site/tools/binary-to-text): Decode binary bytes into readable text with UTF-8 or strict ASCII, without uploading your input. - [Text to Binary Converter](https://gigatools.site/tools/text-to-binary): Encode text as eight-bit binary bytes with UTF-8 or strict ASCII and your choice of separator. ## Website & network - [Robots.txt Generator](https://gigatools.site/tools/robots-txt-generator): Generate a clean robots.txt file for your website. - [URL Encoder / Decoder](https://gigatools.site/tools/url-encoder-decoder): Safely encode or decode URL components. - [Domain into IP](https://gigatools.site/tools/domain-into-ip): Resolve a domain name to its current IP addresses. - [Online MD5 Generator](https://gigatools.site/tools/md5-generator): Create an MD5 digest from a text value. - [Website Down Checker](https://gigatools.site/tools/ping-website): Check the HTTP response to a HEAD request from the GigaTools server. A failed check is not proof of a global outage. - [Page Size Checker](https://gigatools.site/tools/page-size-checker): Measure the response size of a public webpage. - [Server Status Checker](https://gigatools.site/tools/server-status-checker): Send an HTTP HEAD request to check the response status of a public URL. - [Find DNS Records](https://gigatools.site/tools/find-dns-records): Look up common DNS records for a domain. - [Nameserver Lookup](https://gigatools.site/tools/domain-hosting-checker): Inspect a domain’s published nameserver records; these do not always identify its web host. - [Get Source Code of Webpage](https://gigatools.site/tools/source-code-viewer): Fetch and inspect public HTML source. - [Website Links Count Checker](https://gigatools.site/tools/website-links-count-checker): Count and classify links in pasted HTML. - [Code to Text Ratio Checker](https://gigatools.site/tools/code-to-text-ratio): Compare visible text with HTML source size. - [URL Rewriting Tool](https://gigatools.site/tools/url-rewriting-tool): Generate an Apache rewrite rule from a URL pattern. - [Htaccess Redirect Generator](https://gigatools.site/tools/htaccess-redirect-generator): Generate a simple 301 redirect rule. - [IPv4 /24 Network Comparison](https://gigatools.site/tools/class-c-ip-checker): Check whether two IPv4 addresses share the same first three octets. - [Whois Checker](https://gigatools.site/tools/whois-checker): Query basic registration data over WHOIS TCP 43. - [Domain Registration Date Lookup](https://gigatools.site/tools/domain-age-checker): Inspect WHOIS data for a published creation date; not every registry provides one. - [HTTP Redirect Response Checker](https://gigatools.site/tools/url-redirect-checker): Check the HTTP response status for a public URL. - [Built With Analyzer](https://gigatools.site/tools/built-with-analyzer): Identify common technologies from pasted HTML. - [Bulk Reverse DNS Lookup](https://gigatools.site/tools/bulk-geo-ip-locator): Look up reverse DNS hostnames for IP addresses; this does not show their physical locations. - [HTML Link Extractor](https://gigatools.site/tools/broken-links-finder): Extract URLs from a pasted list or links from HTML; check each destination separately for a broken response. - [Cache-Control Checker](https://gigatools.site/tools/cache-control-checker): Explain pasted response Cache-Control directives, flag conflicting values and distinguish browser from shared-cache freshness lifetimes. - [URL Cleaner](https://gigatools.site/tools/url-cleaner): Remove recognized UTM and click-tracking parameters from a batch of links while preserving unrelated query values and fragments. - [DNS Propagation Checker](https://gigatools.site/tools/dns-propagation-checker): Compare DNS answers from Google and Cloudflare, including record values and TTLs. Two resolvers, not worldwide test locations. - [SPF and DMARC Checker](https://gigatools.site/tools/spf-dmarc-checker): Look up published SPF, DMARC and MX records for a domain without sending email or claiming delivery verification. - [DKIM Record Checker](https://gigatools.site/tools/dkim-record-checker): Look up the public DKIM TXT and CNAME answers for a domain and selector you supply. - [SSL Certificate Checker](https://gigatools.site/tools/ssl-certificate-checker): Inspect a public website certificate, expiry date, issuer and verified TLS connection. ## Calculators - [Percentage Calculator](https://gigatools.site/tools/percentage-calculator): Work out percentages, ratios, and change. - [Age Calculator](https://gigatools.site/tools/age-calculator): Calculate exact age from a date of birth. - [BMI Calculator](https://gigatools.site/tools/bmi-calculator): Calculate body mass index and category. - [Loan / EMI Calculator](https://gigatools.site/tools/loan-calculator): Estimate monthly repayments and total interest. - [Unit Converter](https://gigatools.site/tools/unit-converter): Convert length, weight, temperature, volume, area, speed and data units. - [Compound Interest Calculator](https://gigatools.site/tools/compound-interest-calculator): See how savings grow with compound interest and regular contributions. - [Discount Calculator](https://gigatools.site/tools/discount-calculator): Work out the sale price and how much you save from a percentage discount. - [Date Difference Calculator](https://gigatools.site/tools/date-difference-calculator): Count the days, weeks and months between two dates, with business days. - [APY Calculator](https://gigatools.site/tools/apy-calculator): Turn an interest rate into its annual percentage yield and see what a deposit earns. - [Calorie Deficit Calculator](https://gigatools.site/tools/calorie-deficit-calculator): Estimate your maintenance calories and daily targets for steady weight loss. - [Date Calculator](https://gigatools.site/tools/date-calculator): Add or subtract days, weeks, months or years from a date, or count working days only. - [Time Calculator](https://gigatools.site/tools/time-calculator): Add and subtract hours, minutes and seconds, or find the clock time after a duration. - [Grade Calculator](https://gigatools.site/tools/grade-calculator): Work out a weighted average grade and the score you need on your final exam, on any scale. - [CM to Inches Converter](https://gigatools.site/tools/cm-to-inches): Convert centimeters to inches instantly, with the formula and a conversion chart. - [Inches to CM Converter](https://gigatools.site/tools/inches-to-cm): Convert inches to centimeters instantly, with the formula and a conversion chart. - [KG to LBS Converter](https://gigatools.site/tools/kg-to-lbs): Convert kilograms to pounds instantly, with the formula and a conversion chart. - [LBS to KG Converter](https://gigatools.site/tools/lbs-to-kg): Convert pounds to kilograms instantly, with the formula and a conversion chart. - [Celsius to Fahrenheit Converter](https://gigatools.site/tools/celsius-to-fahrenheit): Convert degrees Celsius to degrees Fahrenheit instantly, with the formula and a conversion chart. - [Fahrenheit to Celsius Converter](https://gigatools.site/tools/fahrenheit-to-celsius): Convert degrees Fahrenheit to degrees Celsius instantly, with the formula and a conversion chart. - [KM to Miles Converter](https://gigatools.site/tools/km-to-miles): Convert kilometers to miles instantly, with the formula and a conversion chart. - [Miles to KM Converter](https://gigatools.site/tools/miles-to-km): Convert miles to kilometers instantly, with the formula and a conversion chart. - [Meters to Feet Converter](https://gigatools.site/tools/meters-to-feet): Convert meters to feet instantly, with the formula and a conversion chart. - [Feet to Meters Converter](https://gigatools.site/tools/feet-to-meters): Convert feet to meters instantly, with the formula and a conversion chart. ## Design & colour - [Color Palette Generator](https://gigatools.site/tools/color-palette-generator): Build tints, shades, and an inverse from one color. - [Color Contrast Checker](https://gigatools.site/tools/contrast-checker): Check WCAG contrast between two colors. - [CSS Gradient Generator](https://gigatools.site/tools/css-gradient-generator): Build linear, radial or conic CSS gradients with up to six colour stops and copy the code. - [CSS Box Shadow Generator](https://gigatools.site/tools/css-box-shadow-generator): Design a box-shadow with live sliders for offset, blur, spread and opacity, then copy the CSS. ## Security - [Suspicious Domain Checker](https://gigatools.site/tools/suspicious-domain-checker): Flag simple domain risk signals before deeper review. - [Password Generator](https://gigatools.site/tools/password-generator): Create strong random passwords. - [Password Strength Checker](https://gigatools.site/tools/password-strength-checker): Estimate password strength and entropy. - [Security Headers Analyzer](https://gigatools.site/tools/security-headers-analyzer): Review HTTP security headers for a URL. ## Everyday utilities - [My IP Address](https://gigatools.site/tools/my-ip-address): View the public IP address detected for your connection. - [RGB to HEX](https://gigatools.site/tools/rgb-to-hex): Convert RGB color values into a hexadecimal color. - [HEX to RGB](https://gigatools.site/tools/hex-to-rgb): Convert a hexadecimal color into RGB values. - [Simple Interest Calculator](https://gigatools.site/tools/simple-interest-calculator): Calculate interest and total amount quickly. - [Email Privacy](https://gigatools.site/tools/email-privacy): Mask most of the text before the @ sign for a visible display. - [YouTube Thumbnail Downloader](https://gigatools.site/tools/youtube-thumbnail-downloader): Get standard thumbnail URLs from a YouTube link. - [Image Placeholder Generator](https://gigatools.site/tools/image-placeholder-generator): Create a lightweight placeholder image URL. - [Privacy Policy Generator](https://gigatools.site/tools/privacy-policy-generator): Draft a clear starter privacy policy. - [Terms & Conditions Generator](https://gigatools.site/tools/terms-generator): Draft starter terms for a small website. - [URL List Preview](https://gigatools.site/tools/open-all-urls): Keep a pasted URL list together for review and copying. - [QR Code Generator](https://gigatools.site/tools/qr-code-generator): Generate a QR image URL from text or a link. - [Invoice Builder](https://gigatools.site/tools/invoice-builder): Create a printable invoice summary. - [Nobel Prize Browser](https://gigatools.site/tools/nobel-prize-browser): Browse Nobel Prize data by year and category. - [QR Code Decoder](https://gigatools.site/tools/qr-code-decoder): Decode a QR code image locally in your browser. - [EXIF Data Viewer](https://gigatools.site/tools/exif-data-viewer): Inspect metadata available from a public image URL. - [Website Screenshot Generator](https://gigatools.site/tools/website-screenshot-generator): Generate a preview image URL for a public page. - [EXIF Data Remover](https://gigatools.site/tools/exif-data-remover): Prepare an image upload for metadata removal. - [Browser Text-to-Speech Reader](https://gigatools.site/tools/ai-voice-reader): Hear text read aloud with voices available on your device. - [Music Loop Maker](https://gigatools.site/tools/ai-music-loop-maker): Compose a short, repeatable melody in your browser with Web Audio. - [Video Thumbnail Studio](https://gigatools.site/tools/ai-video-thumbnail-studio): Capture and download a frame from a local video file. - [Release Checklist Builder](https://gigatools.site/tools/ai-launch-checklist-generator): Turn release details into a practical, provider-neutral checklist using a fixed template. - [UPI QR Code Generator](https://gigatools.site/tools/upi-qr-code-generator): Create a payment QR image URL from UPI details. - [Bank to IFSC Code](https://gigatools.site/tools/bank-to-ifsc-code): Format bank branch details for an IFSC lookup. - [IFSC Code to Bank Details](https://gigatools.site/tools/ifsc-code-to-bank-details): Validate the shape of an IFSC code. - [Color Picker Tool](https://gigatools.site/tools/color-picker): Preview a color and copy its hexadecimal value. - [Webpage Screen Resolution Simulator](https://gigatools.site/tools/screen-resolution-simulator): Preview a public page inside a selected viewport. - [What is my Browser](https://gigatools.site/tools/what-is-my-browser): View the browser information sent with your request. - [Time Zone Converter](https://gigatools.site/tools/time-zone-converter): Convert a time between cities and time zones around the world. - [Random Number Generator](https://gigatools.site/tools/random-number-generator): Generate random numbers in any range, with or without repeats. - [MP3 to WAV](https://gigatools.site/tools/mp3-to-wav): Convert MP3 audio to a 16-bit PCM WAV file in your browser, with original stereo or mono output. - [Audio Cutter](https://gigatools.site/tools/audio-cutter): Trim an audio file by start and end time, preview the clip and download it as a WAV file. - [ZIP Extractor](https://gigatools.site/tools/zip-extractor): Open a ZIP archive, inspect the file list and download individual files without uploading the archive. - [ZIP Creator](https://gigatools.site/tools/zip-creator): Combine multiple files into a ZIP archive with optional compression, entirely in your browser. - [Online Timer](https://gigatools.site/tools/online-timer): Set a countdown timer with an alarm or run a stopwatch with laps, right in your browser tab. ## More - [All tools](https://gigatools.site/tools) - [Guides](https://gigatools.site/articles) - [About](https://gigatools.site/about)