轻松应对日常任务的工具

Add Page Numbers inserts clean, automatic page numbering into any PDF so your documents look polished and are easy to reference. Choose where the numbers appear — bottom center, the corners, or the top — and the tool stamps neat, sequential numbers onto every page for you. Proper pagination is essential for reports, ebooks, theses, legal filings, manuals, and manuscripts, where readers and reviewers need to point to a specific page. You no longer have to renumber by hand or reprint a document just to add page numbers. The tool processes your file locally in your browser, so it stays completely private, and the finished PDF downloads instantly. It is free to use, leaves no watermarks, and needs no account.

Add Subtitles burns an SRT or VTT subtitle file directly into your video so captions show on any player without a separate file. Upload your video, add or paste your subtitles, and export a captioned video. Processing runs in your browser for full privacy.

The Advanced PDF Editor lets you modify PDFs directly in your browser. Add or edit text, insert signatures, draw, highlight, and annotate pages without expensive desktop software. Because it works client-side, your documents stay private and there are no watermarks on the result.

Convert Shamsi, Miladi, and Hijri dates.

Calculate the chargeable dimensional weight for airline cargo.

Verify AFIP / ANSES tax identity numbers.

Calculate aspect ratios.

Calculate hot mix asphalt weight for paving driveways.

Verify an Australian Business Number using Modulo 89.

Estimate the state government transfer duty on real estate.

Calculate minimum employer super contributions based on the current rate.

Average Calculator instantly finds the mean (average) of any set of numbers, along with the sum, count, median, minimum, and maximum. Just enter your numbers separated by commas, spaces, or new lines. It is perfect for students, teachers, and anyone working with data who needs quick statistics without a spreadsheet. The calculation runs live in your browser.

Background Remover automatically erases the background from photos so you are left with a clean, transparent subject. Perfect for product photos, profile pictures, and design work. Upload an image and get a cutout in seconds, ready to drop onto any new background.

Convert Katha, Chatak, and Decimals (Shotok) to standard units.

Generate barcodes online.

Base64 Encoder converts text to Base64 and decodes Base64 back to plain text. Useful for embedding data, debugging APIs, and handling encoded strings. Encoding and decoding happen instantly in your browser with no data sent anywhere.

Generate bcrypt hashes.

Convert binary to decimal.

Calculate your Body Mass Index.

Instantly check if a CPF or CNPJ is mathematically valid.

Verify the verification digits of a Brazilian CPF.

Calculate your Salário Líquido in Brazil.

Estimate the number of bricks and mortar needed for your wall.

Caesar Cipher encrypts and decrypts text using the classic shift cipher, where each letter is moved a set number of places in the alphabet. Choose any shift from 1 to 25 to encode secret messages or decode them. It is a fun, educational tool for learning cryptography basics and solving puzzles. Everything runs in your browser, so your messages stay private.

Calculate mandatory Canadian payroll deductions.

Estimate provincial closing costs for real estate.

Check if you pass the Canadian mortgage stress test rules.

Case Converter instantly changes the capitalization of your text to UPPERCASE, lowercase, Title Case, Sentence case, and more. Fix accidental caps lock, format headings, or prepare titles in one click. It works entirely in your browser.

Check the Digito Verificador of a Chilean ID.

Translate Western dates into the traditional Chinese agricultural calendar.

Coin Flip is a free online coin flipper that gives you a fair, random heads or tails result with a single click. Flip once to make a quick decision, or flip hundreds of times at once to see the running heads/tails tally. It is perfect for settling debates, games, and probability demonstrations, and it works instantly in your browser.

Generate color palettes.

Pick colors and get HEX/RGB codes.

Compound Interest Calculator shows how an investment or savings balance grows over time with compounding, including optional regular monthly deposits. Enter your principal, interest rate, time period, and compounding frequency to see your final balance, total contributions, and interest earned. It is perfect for planning savings, investments, and retirement goals. It runs instantly in your browser.

Optimize image size.

Reduce PDF file size.

减小视频文件大小。

Calculate cubic yards for pouring slabs and driveways.

Convert between JPG, PNG, WEBP.

Convert Video changes your videos between popular formats like MP4, MOV, AVI, and MKV so they play on any device or platform. In-browser encoding means your files are never uploaded, giving you fast, private conversion without installing software.

Create countdown timers.

Crop Image lets you trim away unwanted edges and frame your photo exactly how you want. Crop freely or use preset aspect ratios for square posts, banners, and profile pictures. It works in your browser for fast, private edits with no quality loss.

Generate CSS gradients visually.

Minify CSS code.

CSV to JSON Converter turns CSV data (with a header row) into a clean JSON array of objects, automatically converting numbers and handling quoted fields. Copy the JSON or download it for use in APIs, apps, and config files. It is a fast, private developer tool that runs entirely in your browser with no uploads.

Convert between world currencies instantly with live exchange rates. Supports Afghan Afghani (AFN), USD, EUR, PKR, IRR, SAR and 10+ currencies with real-time market data.

Delete PDF Pages lets you remove the pages you do not need from a PDF and keep only the ones that matter. Simply enter the page numbers or ranges you want to delete — for example 1, 3, or 5-8 — and the tool rebuilds a clean document without them. It is the fastest way to strip out blank pages, cover sheets, advertisements, duplicate scans, or confidential sections before you share or print a file. There is no need for expensive desktop software or a complicated editor; you get a precise, trimmed PDF in seconds. Because everything runs inside your browser, your original document is never uploaded to a server, so your information stays private. The tool is completely free, adds no watermarks, and requires no registration.

Dice Roller lets you roll one or many virtual dice with any number of sides — D4, D6, D8, D10, D12, D20, or D100 — and shows each result plus the total. It is perfect for board games, tabletop RPGs like D&D, classrooms, and any time you need dice but do not have them. Rolls are fair and instant, right in your browser.

Calculate discounts and final prices.

Estimate the number of gypsum panels needed for a room.

Convert modern international dates to the Ethiopian (Ge'ez) calendar.

Calculate how many boxes fit on a standard EPAL pallet (120x80cm).

Extract Audio pulls the sound out of a video and saves it as an MP3 or WAV file. Perfect for grabbing music, podcasts, lectures, or interview audio from a clip. Extraction runs in your browser, so your video never leaves your device.

Generate favicons from images.

File Compressor bundles multiple files into a single ZIP archive so they are easier to send and store. Combine documents, images, and more into one tidy download. Compression runs in your browser, keeping your files private.

File Converter changes images between JPG, PNG, and WebP and turns images or text files into PDF, all in your browser. It is a fast, private way to switch formats without installing software or uploading your files anywhere.

Find & Replace searches your text for a word or phrase and swaps it for another, all at once. Clean up documents, fix repeated typos, or reformat data quickly. It supports case-sensitive matching and runs entirely in your browser.

Flip & Rotate Image lets you mirror a photo horizontally or vertically and rotate it to any angle. Fix sideways pictures, create mirror effects, or straighten scans in a couple of clicks. It runs in your browser for fast, private editing.

Convert your Salaire Brut to Salaire Net.

Calculate French social tax deductions on your gross salary.

Verify SIREN and SIRET codes using the Luhn Algorithm.

Calculate your net salary after German taxes.

Instantly translate exam percentage points into official IHK grades.

Grammar Checker scans your writing for grammar mistakes, spelling errors, and punctuation issues, then suggests corrections. Polish essays, emails, and articles so they read clearly and professionally. It works online in your browser with no sign-up required.

Instantly calculate the size of Greek land and property plots.

Convert modern international dates to the traditional Jewish calendar.

Convert HEX to RGB.

Convert hex to decimal.

Get a rough estimate of the lunar phase (Paksha & Tithi).

Encode HTML entities.

HTML Formatter cleans up and indents messy HTML so it is easy to read and maintain. Paste minified or tangled markup and get neatly structured code back. It runs entirely in your browser, so your code stays private.

Generate htpasswd files.

Pick colors from images.

Convert images to base64.

Image to Text uses OCR (optical character recognition) to pull editable text out of photos, screenshots, and scanned documents. Copy text from a picture instead of retyping it. Recognition runs in your browser across many languages, keeping your images private.

Verify the Verhoeff checksum of a 12-digit Aadhaar UID.

Verify a 12-digit Aadhaar using the Verhoeff algorithm.

Convert Bigha to Acres, Hectares, and Sq Ft based on Indian states.

Calculate IGST, CGST, and SGST for your products.

Easily calculate GST components (CGST, SGST, IGST) for invoicing.

Test your internet connection speed directly in the browser. Measure download speed, upload speed, latency (ping), and jitter with animated gauges. Works on mobile and desktop — no app required.

Generate invoices online.

Estimate your Irish net take-home pay including USC.

Convert standard international dates into the lunar Islamic calendar.

Generate your Italian tax code based on personal details.

Add or extract tax for 10% standard and 8% reduced rates.

Translate Gregorian dates into official Japanese Imperial Era dates.

Verify a 12-digit Japanese My Number.

Convert Japanese real estate sizes to Sq Meters.

Minify JS code.

JPG to PDF lets you turn one or many images into a single, professional PDF document in just a few seconds. Upload JPG, PNG, or WEBP photos, arrange them in the exact order you want, and combine them into one neatly organized PDF that is easy to share, print, email, and archive. It is the perfect way to turn scanned pages, receipts, ID photos, notes, or screenshots into one tidy file instead of juggling dozens of separate images. You can choose the page size and orientation so your images always fit beautifully. Best of all, everything runs entirely inside your browser using fast, secure technology, which means your images are never uploaded to any server. The tool is completely free, adds no watermarks, and requires no account or sign-up.

JSON Formatter beautifies messy JSON with proper indentation and validates it so you can spot errors instantly. Paste minified JSON to make it readable, or check that an API response is well-formed. It runs entirely in your browser.

JSON to CSV Converter turns a JSON array of objects into clean CSV data you can open in Excel, Google Sheets, or any spreadsheet. It automatically detects all keys as columns, handles commas and quotes correctly, and lets you copy or download the result. It is a fast, private tool for developers and analysts that runs entirely in your browser.

Adjust historical dates for calendar drift.

Calculate your monthly net pay including NHIF and NSSF.

Calculate loan EMIs.

Generate placeholder text.

Calculate your mandatory Malaysian payroll deductions.

Margin Calculator helps you price products and measure profitability by computing profit, profit margin, and markup from a cost and selling price. It is essential for retailers, freelancers, and e-commerce sellers who need to understand their numbers at a glance. Enter your cost and price and the results update instantly in your browser.

Preview markdown online.

MD5 Generator creates an MD5 hash from any text string, useful for checksums, fingerprints, and verifying data integrity. Paste your text to get the hash instantly. Hashing runs in your browser so your input stays private.

Generate memes online.

Combine multiple PDFs into one.

Check the formatting of Mexican identity numbers.

Translate morse code.

Convert modern international dates to the official calendar of Nepal.

Calculate your retirement contributions based on your salary.

Verify a 13-digit NZBN using the GS1 Checksum.

Verify the structure of a Nigerian Bank Verification Number.

Calculate your net take-home pay based on LIRS/FIRS bands.

Convert numbers into words.

Free online notepad.

Instantly convert traditional Pakistani real estate measurements.

Palindrome Checker tells you instantly whether a word, phrase, or number reads the same forwards and backwards. It ignores spaces, punctuation, and capitalization, so phrases like "A man, a plan, a canal: Panama" are correctly recognized. It is great for word games, homework, and curiosity. The check runs live in your browser as you type.

Password Generator creates strong, random passwords that are hard to crack. Customize length and include uppercase, numbers, and symbols to meet any site requirement. Passwords are generated locally in your browser and never sent anywhere, keeping them secure.

PDF to Image converts each page of your PDF into a high-resolution JPG or PNG picture. Great for sharing a page on social media, embedding in a presentation, or previewing documents as images. Pages are rendered crisply in your browser with no quality loss and no uploads.

PDF to Text extracts all the readable text from your PDF and turns it into clean, copy-ready plain text. Use it to reuse content from reports, research papers, articles, and ebooks without retyping a single word, or to quickly grab a quote, a paragraph, or a table of figures. The extracted text appears instantly and can be copied to your clipboard or downloaded as a .txt file for editing in any app. This is a huge time-saver for students, writers, and professionals who need to repurpose existing documents. The extraction runs in your browser using advanced PDF parsing, which means your file is never uploaded and your information stays completely private. The tool is free, fast, and needs no account or installation.

Convert PDF documents to Word.

Calculate percentages easily.

Instantly convert Gregorian dates to the official Iranian calendar.

Easily calculate Philippine land title measurements.

Calculate your mandatory monthly statutory deductions.

Create pixel art.

Plagiarism Checker analyzes your text for repeated phrases, overused generic expressions, and internal duplication to help you gauge originality before you publish. Use it as a quick first pass on essays and articles. The analysis runs locally in your browser.

Pomodoro productivity timer.

Get accurate daily prayer times (Fajr, Sunrise, Dhuhr, Asr, Maghrib, Isha) for cities across Afghanistan including Kabul, Herat, Mazar-i-Sharif, Kandahar, Jalalabad, Kunduz, Ghazni, and Bamiyan. Also shows Qibla direction and Hijri date.

Generate QR codes online.

Generate random numbers.

Regex Tester lets you build and debug regular expressions with live match highlighting. Enter a pattern and test string to see exactly what matches as you type. Perfect for developers fine-tuning validation and search patterns. It runs in your browser.

Remove duplicate lines from text.

Remove Extra Spaces cleans up messy text by collapsing multiple spaces into one, trimming spaces from the start and end of each line, and optionally removing blank lines. It is the fastest way to tidy text copied from documents, spreadsheets, and the web before you reuse it. The cleanup runs instantly in your browser, keeping your text private.

Remove Line Breaks strips unwanted line breaks and paragraph breaks from your text, joining everything into clean, continuous lines. Choose to replace breaks with a space or comma, remove them entirely, or keep paragraphs while removing single breaks. It is ideal for cleaning up copied text from PDFs, emails, and code. The tool works instantly in your browser with no uploads.

Change image dimensions.

Build a professional resume or CV online in minutes — completely free, no signup required. Fill in your personal information, work experience, education, and skills, then preview and download as a clean PDF.

Reverse text strings.

RGB to HEX Converter turns red, green, and blue color values into a HEX color code, and also shows the HSL equivalent and a live color preview. Use the sliders or type exact values to find the perfect color for your website, design, or CSS. It is a fast, free tool for developers and designers that works entirely in your browser.

Convert roman numerals.

Convert roof area to roofing squares and bundles.

Encode with ROT13.

Rotate PDF fixes pages that appear sideways or upside down. Turn individual pages or the whole document 90, 180, or 270 degrees and save the corrected PDF permanently. It is fast, free, and runs in your browser so your files stay private.

Sales Tax Calculator works out the tax amount and final total for any price and tax rate. You can add tax to a pre-tax price or reverse-calculate the net price from a tax-inclusive total. It is handy for shoppers, freelancers, and small businesses checking invoices and receipts. The math updates instantly in your browser.

Verify the mathematical checksum of a KSA Iqama.

Record your screen online.

SHA256 Generator produces a secure SHA-256 hash from any text, widely used for checksums, digital signatures, and verifying integrity. Paste text to get the hash instantly. Everything runs in your browser, keeping your input private.

Calculate the total Cubic Meters (CBM) for ocean freight.

Calculate Employer & Employee CPF deductions based on age.

Generate URL friendly slugs.

Sort Text Lines arranges your lines alphabetically (A–Z or Z–A), numerically, by length, or in random order, with options to remove duplicates and ignore case. It is perfect for organizing lists, keywords, names, and data. The sorting happens instantly in your browser, so your information stays private and there are no limits.

Decode demographics and verify the Luhn checksum.

Validate SA ID numbers and extract Date of Birth & Gender.

Calculate your net salary according to SARS brackets.

Add or extract the 15% VAT for invoicing and SARS returns.

Verify the structure of a Korean Resident Registration Number.

Estimate the Impuesto sobre Transmisiones Patrimoniales.

Verify Spanish National ID (NIF) and Foreigner ID (NIE).

Convert historic Varas Cuadradas into modern area metrics.

Extract pages from your PDF.

Format SQL queries.

Online stopwatch.

Convert the standard Taiwanese property measurement (Ping).

Text Diff compares two blocks of text side by side and highlights every addition, deletion, and change. Perfect for proofreading edits, comparing document versions, or reviewing code snippets. The comparison runs instantly in your browser.

Repeat text multiple times.

Convert text to binary and vice versa.

Convert text to spoken words.

Text Translator converts text between over 100 languages so you can understand and communicate across borders. Translate messages, articles, and phrases instantly. It is fast, free, and great for quick translations on the go.

Instantly convert between Gregorian and Phutthasakkarat (BE) years.

Convert traditional Thai land units into Square Meters and Acres.

Calculate tips and split bills.

Trim Video lets you cut a video down to just the part you need by setting a start and end point. Remove dead time at the beginning or end, or grab a single highlight. It works in your browser with no uploads and no watermarks.

Test your typing speed.

Calculate your mandatory EOSG severance pay under UAE Law.

Verify HMRC format rules for UK NI Numbers.

Calculate your take-home pay after Income Tax and NI in the UK.

Estimate your take-home pay based on standard tax bands.

Translate historic British Imperial land sizes to modern metrics.

Calculate your property tax for England & Northern Ireland.

Convert between different units.

Convert Unix timestamps.

Unlock PDF removes the open or permissions password from PDFs you have the right to access, so you can view, copy, and print them freely. Use it for your own protected documents when you already know the password. Processing happens locally in your browser to keep your files secure.

URL Encoder converts text into a safe, URL-encoded format and decodes encoded URLs back to readable text. Handle special characters in links, query parameters, and API requests correctly. It runs instantly in your browser.

Calculate lumber volume for purchasing and woodworking.

Translate imperial inches and fractions into precise millimeters.

Verify the structure and prefix of a US Employer Identification Number.

Generate UUIDs online.

Video to GIF turns short video clips into shareable animated GIFs. Great for reactions, tutorials, and social posts. Pick a clip, convert it in your browser, and download a lightweight GIF instantly, with no uploads and no watermarks.

Watermark Image lets you stamp your photos with a custom text watermark to protect your work and build your brand. Add watermarks to many images at once, adjust the text, color, position, size, and opacity with a live preview, then download every watermarked image together in a ZIP. Everything runs in your browser, so your photos are never uploaded.

Watermark PDF stamps a custom text watermark across every page of your PDF so you can protect your documents, assert ownership, and clearly mark a file's status. Add words such as CONFIDENTIAL, DRAFT, SAMPLE, or your own brand name, then fine-tune the color, opacity, font size, and position until it looks exactly right. A diagonal, semi-transparent watermark is ideal for contracts, proposals, invoices, design drafts, and any creative work you want to share without losing control of it. The watermark is applied to the entire document in a single click, so you never have to edit pages one by one. Because the whole process runs locally in your browser, your PDF is never uploaded to a server and your data stays private. The tool is free to use, adds no branding of its own, and requires no sign-up.

Compress images for WhatsApp, Telegram, and other messaging apps. Reduce image file size by up to 90% while maintaining visual quality. Perfect for saving mobile data and sending images faster on slow connections.

Word Counter instantly counts words, characters, sentences, and paragraphs as you type or paste text. Stay within limits for essays, social posts, and SEO meta descriptions, and see reading time at a glance. It runs entirely in your browser for instant results.

Word Frequency Counter analyzes any text and shows how many times each word is used, ranked from most to least frequent, along with totals for words, unique words, and characters. It is perfect for writers checking for overused words, students studying keyword density, and SEOs optimizing content. Everything runs instantly in your browser, so your text stays private and nothing is uploaded.

Word to PDF turns your DOC and DOCX files into clean, shareable PDF documents that look the same on any device. PDF is the standard for resumes, invoices, and contracts because the formatting never shifts. Convert quickly in your browser with no software to install.

Format XML files online.

ZIP Extractor opens ZIP archives right in your browser so you can view and download the files inside without installing software. Quickly unpack documents, images, and folders from a zip. Extraction is local, so your files stay private.