Online Tools Harbor340+ free online tools
Text, PDF, image, developer and AI tools that just work. Fast, free, no sign-up, and most run entirely in your browser so your data stays private.
Popular tools
All 340 tools →Remove WhitespaceRemove extra spaces, tabs and blank lines from text, or strip every whitespace character at once.Remove Line BreaksTurn text broken across many lines (PDF copy-paste, emails) into clean single-line paragraphs.Find and Replace TextFind and replace words or patterns in text, with optional regular expressions, case sensitivity and whole-word matching.HTML to TextStrip HTML tags and convert a web page or email template to clean, readable plain text.Word CounterCount words, characters, sentences, paragraphs and estimate reading time.Character CounterCount characters with and without spaces, plus limits for X/Twitter, meta descriptions, SMS and Instagram.Case ConverterConvert text between UPPER, lower, Title, Sentence, camel, snake, kebab and other cases.Extract Text with Regular ExpressionsExtract every match of a regular expression (or a capture group) from text. Includes presets for URLs, emails, sitemap links and more.Email ExtractorExtract all email addresses from text, HTML or CSV, with duplicates removed.URL ExtractorExtract every link (http/https URL) from text or HTML. Optionally keep only domains.Sort LinesSort lines alphabetically, numerically, by length or in natural order.Remove Duplicate LinesDelete repeated lines and keep only unique ones, in their original order.List to Comma SeparatedJoin lines into one comma-separated (or custom) string, optionally quoted, e.g. for SQL IN clauses.HTML ViewerPaste HTML and preview it live, side by side, in a safe sandbox.JSON Formatter & ValidatorBeautify, validate and minify JSON with clear error messages.Text Compare (Diff Checker)Compare two texts and highlight the differences by word, line or character.Base64 Encode / DecodeEncode text to Base64 or decode Base64 back to text (UTF-8 safe).Hash Generator (MD5, SHA-256)Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 hashes of any text at once.Password GeneratorGenerate strong, random passwords in your browser using a secure random source.Random Topic GeneratorGet random topics for essays, debates, conversations, blog posts, speeches and writing prompts.Random Name GeneratorGenerate random full names (first + last) from 6 countries, for characters, test data or games.Baby Name GeneratorFind baby name ideas for girls and boys, filtered by origin and first letter.Username GeneratorGenerate cool, unique usernames for gaming, Instagram, TikTok and more, optionally based on your name.QR Code GeneratorCreate QR codes for links, text, Wi-Fi and email. Download as PNG or SVG; no sign-up, no expiry.
AI Tools
View all 36 →AI Paraphrasing ToolNewRewrite sentences and paragraphs in fresh words while keeping the meaning. Choose a style: standard, formal, simple, creative or shorter.AI Text SummarizerNewSummarize long articles, reports and emails into a short paragraph or key bullet points.AI Grammar CheckerNewFix grammar, spelling and punctuation mistakes in English, French, German, Spanish and more.AI Email WriterNewDescribe what you need and get a ready-to-send email with a subject line, in the tone you choose.AI Email Reply GeneratorNewPaste an email or message you received and get a polite, clear reply.AI TranslatorNewTranslate text naturally between 40+ languages, keeping tone and formatting.AI Title & Headline GeneratorNewGenerate catchy titles for blog posts, YouTube videos, articles and emails from a topic or draft.AI Meta Description GeneratorNewWrite SEO meta descriptions (under 155 characters) that earn clicks, from a page title, keyword or content.
Text Tools
View all 20 →Remove WhitespaceRemove extra spaces, tabs and blank lines from text, or strip every whitespace character at once.Remove Line BreaksTurn text broken across many lines (PDF copy-paste, emails) into clean single-line paragraphs.Add Line BreaksInsert line breaks every N characters, after every sentence, every N words or after a delimiter.Find and Replace TextFind and replace words or patterns in text, with optional regular expressions, case sensitivity and whole-word matching.Bulk Find and ReplaceNewRun many find-and-replace rules at once. One rule per line: old => new.HTML to TextStrip HTML tags and convert a web page or email template to clean, readable plain text.Word CounterCount words, characters, sentences, paragraphs and estimate reading time.Character CounterCount characters with and without spaces, plus limits for X/Twitter, meta descriptions, SMS and Instagram.
Extractors
View all 10 →Extract Text with Regular ExpressionsExtract every match of a regular expression (or a capture group) from text. Includes presets for URLs, emails, sitemap links and more.Email ExtractorExtract all email addresses from text, HTML or CSV, with duplicates removed.Email List Validator & CleanerNewCheck a list of email addresses for valid syntax, fix common typos (gmial.com) and split valid from invalid.Extract Domains from EmailsGet the list of domains from a list of email addresses, with counts.URL ExtractorExtract every link (http/https URL) from text or HTML. Optionally keep only domains.Number ExtractorExtract all numbers (integers, decimals, negatives) from text.Phone Number ExtractorFind and extract phone numbers from text in common international formats.Hashtag & Mention ExtractorExtract #hashtags and @mentions from social media posts.
Line Tools
View all 11 →Sort LinesSort lines alphabetically, numerically, by length or in natural order.Remove Duplicate LinesDelete repeated lines and keep only unique ones, in their original order.Remove Empty LinesRemove blank lines (including lines with only spaces) from text.Reverse Line OrderFlip the order of lines so the last line comes first.Shuffle LinesRandomly shuffle the order of lines in a list.Add Line NumbersNumber each line of text, with custom start and separator.Add Prefix / Suffix to LinesAdd text to the start and/or end of every line.Filter Lines (Keep / Remove Lines Containing)Keep or remove all lines that contain a word, phrase or regex.
Case Converters
View all 11 →Case ConverterConvert text between UPPER, lower, Title, Sentence, camel, snake, kebab and other cases.Uppercase ConverterConvert text to UPPERCASE (all capital letters).Lowercase ConverterConvert text to lowercase letters.Title Case ConverterCapitalize the first letter of each important word, like a headline.Sentence Case ConverterCapitalize only the first letter of each sentence.camelCase ConverterConvert words or phrases to camelCase for variable names.PascalCase ConverterConvert text to PascalCase for class and component names.snake_case ConverterConvert text to snake_case for Python, databases and APIs.
Developer Tools
View all 15 →HTML ViewerPaste HTML and preview it live, side by side, in a safe sandbox.JSON Formatter & ValidatorBeautify, validate and minify JSON with clear error messages.JSON MinifierMinify JSON by removing whitespace to reduce its size.JSON to CSVConvert a JSON array of objects to CSV for Excel or Google Sheets.CSV to JSONConvert CSV (with header row) to a JSON array of objects.XML FormatterPretty-print and indent XML, sitemaps and RSS feeds, or minify them.HTML MinifierMinify HTML by removing comments and collapsing whitespace.CSS Minifier & BeautifierMinify CSS for production or beautify it to make it readable.
Encoders & Decoders
View all 28 →Base64 Encode / DecodeEncode text to Base64 or decode Base64 back to text (UTF-8 safe).URL Encode / DecodePercent-encode text for URLs or decode %20-style strings.HTML Entities Encode / DecodeEscape characters like < > & " as HTML entities, or decode entities back to text.Hash Generator (MD5, SHA-256)Generate MD5, SHA-1, SHA-256, SHA-384, SHA-512 and CRC32 hashes of any text at once.Text to Binary ConverterConvert text to binary code (01001000) and binary back to text.Text to Hex ConverterConvert text to hexadecimal and hex back to text.Morse Code TranslatorTranslate text to Morse code and Morse code to text.Base64 EncodeEncode text or strings to Base64 online, UTF-8 safe (emojis and accents work).
Generators
View all 20 →UUID GeneratorGenerate random UUID v4 or time-ordered UUID v7 identifiers in bulk.Random Number GeneratorGenerate random numbers between a min and max, with or without repeats.Lorem Ipsum GeneratorGenerate Lorem Ipsum placeholder text by paragraphs, sentences or words.Random Topic GeneratorGet random topics for essays, debates, conversations, blog posts, speeches and writing prompts.Random Color GeneratorGenerate random HEX colors or a harmonious palette.Random Name GeneratorGenerate random full names (first + last) from 6 countries, for characters, test data or games.Baby Name GeneratorFind baby name ideas for girls and boys, filtered by origin and first letter.Baby Girl Name GeneratorBeautiful baby girl names from English, French, German, Spanish, Italian and Arabic traditions.
SEO & Web Tools
View all 14 →Sitemap URL ExtractorExtract all URLs from an XML sitemap: paste the XML or enter the sitemap URL. Supports sitemap index files.Redirect CheckerNewCheck where a URL redirects: see every hop, 301 vs 302 status codes, redirect chains and loops. Bulk check up to 50 URLs.HTTP Headers CheckerNewView the HTTP response headers of any URL: status code, caching, security headers, X-Robots-Tag and more.DNS LookupNewLook up DNS records of any domain: A, AAAA, CNAME, MX, NS, TXT, SOA, CAA and more.MX LookupNewFind the mail servers (MX records) of a domain and see which email provider it uses.SPF & DMARC CheckerNewCheck a domain's SPF and DMARC records to improve email deliverability and prevent spoofing.DNS Propagation CheckerNewCompare DNS answers from public resolvers (Cloudflare, Google) to see if a DNS change has propagated.What Is My IP AddressNewSee your public IP address (IPv4 or IPv6), approximate location, ISP and browser.
PDF Tools
View all 9 →Merge PDFCombine multiple PDF files into one, in the order you choose.Split PDFSplit a PDF into separate files: one per page or by page ranges.Extract PDF PagesPick pages (e.g. 1-3, 7) and save them as a new PDF. Also reorders pages.Delete PDF PagesRemove unwanted pages from a PDF.Rotate PDFRotate all or some pages of a PDF by 90°, 180° or 270°.Add Page Numbers to PDFStamp page numbers on a PDF, with position and format options.JPG to PDF (Images to PDF)Convert JPG, PNG or WebP images into a single PDF document.PDF to JPGConvert each PDF page to a high-quality JPG or PNG image.
Converters
View all 103 →Unit ConverterConvert length, weight, temperature, volume, area, speed, data size and time units instantly.Number Base ConverterConvert numbers between binary, octal, decimal, hexadecimal and any base 2–36.Roman Numeral ConverterConvert numbers to Roman numerals (2026 → MMXXVI) and back.Number to Words ConverterSpell out numbers in English words, including cheque/check format.Percentage CalculatorWork out X% of Y, what percent X is of Y, and percentage increase or decrease.Centimeters to Inches (cm to in)Convert centimeters to inches instantly, with the formula and a cm to in conversion table.Inches to Centimeters (in to cm)Convert inches to centimeters instantly, with the formula and a in to cm conversion table.Meters to Feet (m to ft)Convert meters to feet instantly, with the formula and a m to ft conversion table.
Passwords & Security
View all 8 →Password GeneratorGenerate strong, random passwords in your browser using a secure random source.Password Strength CheckerCheck how strong a password is, its entropy and estimated crack time. Runs 100% in your browser; nothing is sent.Passphrase GeneratorGenerate memorable, strong passphrases from random words (diceware style).PIN GeneratorGenerate random numeric PIN codes (4, 6 or more digits).API Key & Token GeneratorGenerate secure random API keys, secrets and tokens in hex, Base64 or Base64URL.Email Scam CheckerNewIs this email a scam? Paste a suspicious email to check the real sender, fake links, lookalike domains, domain age and classic scam signs, with a clear risk score.Suspicious Link CheckerNewCheck a link from an email, SMS or message before you click it: fake brand domains, lookalike letters, hidden destinations, risky domain endings and domain age.Bcrypt Hash Generator & CheckerHash a password with bcrypt or check a password against an existing bcrypt hash. Runs locally.
Business & Legal
View all 9 →Invoice GeneratorNewCreate a professional invoice and download it as a PDF for free: your logo, line items, tax/VAT, discount and any currency. No sign-up.Quote & Estimate GeneratorNewCreate a price quote or estimate for a client and download it as a PDF, with validity date, taxes and discount.Receipt GeneratorNewMake a payment receipt (cash, card, bank transfer) and download it as a PDF in seconds.Privacy Policy GeneratorNewCreate a free privacy policy for your website, app or online store, with GDPR and CCPA sections.Shipping Policy GeneratorNewGenerate a clear shipping policy for your online store: processing time, delivery times, costs, international shipping and lost parcels.Return & Refund Policy GeneratorNewWrite a return and refund policy for your store: return window, conditions, who pays shipping, refund method and exchanges.Terms and Conditions GeneratorNewGenerate terms and conditions (terms of service) for a website, blog, SaaS or online store.Cookie Policy GeneratorNewCreate a cookie policy that lists the cookie categories you use and explains consent choices.
Business Calculators
View all 25 →Break-Even CalculatorNewFind how many units you must sell, and how much revenue you need, to cover your fixed and variable costs.Break-Even ROAS CalculatorNewCalculate the minimum ROAS, maximum ACoS and maximum cost per acquisition your ads can have before you lose money.CPA Calculator (Cost Per Action)NewCalculate cost per action / acquisition from your ad spend and conversions, plus CPC and conversion rate.CPC Calculator (Cost Per Click)NewWork out your cost per click, click-through rate and CPM from ad spend, clicks and impressions.CPM Calculator (Cost Per Mille)NewCalculate CPM (cost per 1,000 impressions), or the budget you need for a given number of impressions.CTR Calculator (Click-Through Rate)NewCalculate click-through rate from clicks and impressions for ads, emails or search results.ROAS Calculator (Return on Ad Spend)NewCalculate return on ad spend, ACoS and the real profit your ads generate after product costs.ROI CalculatorNewCalculate return on investment, net profit and annualized ROI for any investment, campaign or project.
Image Tools
View all 11 →Image ConverterConvert images between JPG, PNG and WebP in your browser. Nothing is uploaded.Image CompressorCompress JPG, PNG and WebP images to reduce file size. Private: runs in your browser.Image ResizerResize images to an exact width or height, keeping the aspect ratio.PNG to JPG ConverterConvert PNG images to JPG online, free and private.JPG to WebP ConverterConvert JPG and PNG images to WebP for faster websites.Base64 to ImageDecode a Base64 string or data URI back to an image, preview it and download it.Image to Base64Convert an image to a Base64 data URI for CSS, HTML or JSON.WebP to JPG ConverterConvert WebP images to JPG so they open everywhere.
Video Tools
View all 10 →Video Scene Detector & Shot ExtractorNewDetect scene changes and cuts in a video and save one image per shot, with timestamps. Runs in your browser: nothing is uploaded.Video to Frames (Frame Extractor)NewExtract frames from a video every N seconds as JPG, PNG or WebP images and download them as a ZIP. Free and private.Video CompressorNewCompress MP4, MOV and WebM videos to a smaller file size for WhatsApp, email, Discord or the web. Private: runs in your browser.Video Trimmer (Cut Video)NewCut the start and end of a video online: pick the start and end time and download the trimmed clip. No upload, no watermark.Video Converter (MP4, WebM, MOV)NewConvert videos between MP4, WebM and MOV in your browser. Free, private and without watermark.Video to GIF ConverterNewTurn a video clip into an animated GIF: choose start, end, width and frame rate. Runs in your browser.Video to MP3 (Extract Audio)NewExtract the audio from a video file and save it as MP3. Choose the bitrate and an optional start/end time.Mute Video (Remove Audio)NewRemove the sound from a video in seconds, without re-encoding the picture. Free and private.