Short, practical how-tos for getting things done with the tools on this site.
Combine multiple PDFs into one file for free, without uploading anything. Step-by-step guide to merging PDFs online, right in your browser.
Unlock a password-protected PDF online for free. No uploads, no sign-up, just remove a known PDF password securely in your browser.
Add a password to a PDF for free using AES-256 encryption. Protect sensitive documents online without uploading them anywhere.
Export PDF pages as JPG or PNG images online for free. Convert one page or an entire PDF to high-resolution images in your browser.
Split a PDF into separate files by page or custom range, for free, online. Extract exactly the pages you need without uploading your file.
Resize a JPG, PNG, WEBP, or HEIC image online for free, with an aspect-ratio lock and quick presets. No uploads, works entirely in your browser.
Combine JPG, PNG, WEBP, or HEIC images into a single PDF for free, online. Reorder pages and convert instantly in your browser.
Reduce an image's file size online for free while keeping it looking sharp. Live before/after size preview, works with JPG, PNG, WEBP, and HEIC.
Convert HEIC photos from your iPhone to JPG, PNG, or WEBP online for free. Works entirely in your browser, no uploads, no apps to install.
Compress files into a .zip archive online for free, without uploading them anywhere. Works with any file type, directly in your browser.
Extract files from a .zip archive online for free, without uploading it anywhere. View and download individual files, right in your browser.
Create a WhatsApp chat link with a pre-filled message for free. Generate a wa.me link for your business or personal use, no sign-up required.
Generate a QR code from any text or link for free, online, with no sign-up. Download as PNG or SVG, entirely in your browser.
Scan a QR code from a photo or screenshot for free, online. Upload an image and instantly read what the QR code contains, no app needed.
Count words, characters, sentences, and paragraphs for free, instantly, in your browser. Check essay length or word count minimums as you write.
Count characters for free, instantly, in your browser. Check your text against X, SMS, meta description, or other character limits as you type.
Validate, format, and explore JSON as a collapsible tree, for free, instantly, in your browser. No uploads, no sign-up.
Convert an hourly rate to yearly salary, or salary to hourly, plus weekly, bi-weekly, semi-monthly, and monthly, for free, instantly.
Calculate your monthly loan payment (EMI), total interest, and a month-by-month amortization schedule, for free, instantly, in your browser.
Calculate your monthly loan payment from a purchase price and down payment, for free, instantly, in your browser. For cars, homes, or anything else financed.
Open, edit, and export CSV files as a simple grid, for free, instantly, in your browser. No uploads, no sign-up, no spreadsheet software needed.
Present a PDF full-screen directly from your browser, for free, with next/previous controls. No PowerPoint, Keynote, or Google Slides needed.
Write and preview Markdown with a live, GitHub-flavored preview, for free, instantly, in your browser. Export as Markdown or HTML.
Encrypt text with a password and share it as a link or file, for free, entirely in your browser. No account, no database, nothing stored on a server.
Decrypt a message someone sent you via a link, text, or file, for free, entirely in your browser. No account, no upload.
Paste HTML or drop in an .html file and see it rendered instantly in a safe, sandboxed preview, free, with nothing uploaded.
View an SVG, swap its colors with a picker, and export to .svg or .png, free, with nothing uploaded to a server.
Turn a logo or image into a real multi-size favicon.ico, free, entirely in your browser. No account, no upload.
Turn one image into every required iOS, iPadOS, macOS, and watchOS app icon size, free, as an Xcode-ready asset catalog or flat PNGs.
Pick a date and time, then see it across as many timezones as you need at once, free, entirely in your browser.
Cut an audio file down to the part you need and export it as WAV or MP3, free, entirely in your browser.
Pull the audio track out of a video and save it as WAV or MP3, free, entirely in your browser, with nothing uploaded.
Convert an audio file to WAV or MP3, free, entirely in your browser, with nothing uploaded to a server.
Generate a properly formatted APA, MLA, and Chicago citation for a website, book, or journal article, free, entirely in your browser.
Open and view an Excel, CSV, or ODS spreadsheet, sheet by sheet, free, entirely in your browser, with nothing uploaded.
Crop a photo to your country's exact passport or visa photo size, free, entirely in your browser, with a ready-to-print sheet.
Build a customizable invoice with your logo, line items, tax, and discount, and download it as a PDF, free, entirely in your browser.
A scientific calculator with trig functions, logs, powers, and memory, free, entirely in your browser.
Turn a CSV or Excel file into a bar, line, area, pie, or scatter chart and download it as a PNG, free, entirely in your browser.
Convert a color between HEX, RGB, and HSL, pick it visually, or search it by name, free, entirely in your browser.
Encrypt any file with a password and share it safely, free, entirely in your browser, with nothing uploaded.
Decrypt a file that was encrypted and shared with you, free, entirely in your browser, with nothing uploaded.
Build a clean, email-safe signature and copy it straight into Gmail or Outlook, free, entirely in your browser.
Build an HTTP request with a simple form and get the equivalent cURL command, free, entirely in your browser.
Plot one or more functions of x and download the graph as a PNG, free, entirely in your browser.
Write and format text with a simple toolbar, no markdown syntax needed, then copy or download it, free, entirely in your browser.
See the hidden metadata, including GPS location, a photo carries, then strip it before you share the photo, free, entirely in your browser.
Generate a strong, random password with custom length and character options, free, entirely in your browser.
Encode or decode a URL or URL component, free, entirely in your browser.
Convert length, weight, volume, area, speed, data storage, time, and temperature units, free, entirely in your browser.
Generate placeholder lorem ipsum text by words, sentences, or paragraphs, free, entirely in your browser.
Compare two pieces of text and see exactly what was added or removed, word by word or line by line, free, entirely in your browser.
Test a regular expression against sample text with live match highlighting and capture groups, free, entirely in your browser.
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, and more, free, entirely in your browser.
Generate a CODE128, EAN-13, UPC-A, CODE39, ITF-14, Codabar, or Pharmacode barcode and download it as an SVG or PNG, free, entirely in your browser.
Read a barcode from an uploaded image or your camera, free, entirely in your browser.
Combine two or more SPF records into one valid record, with DNS lookup counting and conflict warnings, free, entirely in your browser.
Generate an MD5, SHA-1, SHA-256, SHA-384, or SHA-512 hash from text or a file, free, entirely in your browser.
Decode a JWT's header and payload, and check its expiry, free, entirely in your browser. The token is never sent anywhere.
Add a text or logo watermark to an image, with control over position, opacity, and rotation, free, entirely in your browser.
Stamp a text or logo watermark across every page of a PDF, with control over position, opacity, and rotation, free, entirely in your browser.