Blog
Practical guides, tips, and how-tos for everyday file tasks.
What Is Base64 Encoding and When Should You Use It
Understand what Base64 encoding does, why it exists, and when to use it. Learn how to encode and decode text and files for APIs, emails, and data URLs.
How to Verify File Integrity with Hashes
Calculate SHA-256, MD5, and other hashes for any file to verify it has not been corrupted or tampered with. Learn how file hashing works and when you need it.
How to Trim a Video Online
Cut videos to the exact length you need. Learn the difference between fast and precise trimming modes and when to use each.
How to Test Regular Expressions Online
Test and debug regex patterns with live matching, capture groups, and replacement. A practical guide to using regex testers effectively.
How to Split a PDF Into Separate Pages
Extract individual pages or specific page ranges from a PDF. Split large documents into smaller files for easier sharing and organization.
How to Sign a PDF Online
Add your signature to any PDF by drawing or typing it. Place signatures on any page, adjust size and position, and download the signed document.
How to Set a Countdown Timer
Set a countdown to any date and watch it tick in real time. Track days, hours, minutes, and seconds until events, deadlines, and launches.
How to Resize Images Online
Resize images to exact pixel dimensions or percentages. Learn when and how to resize photos for websites, social media, email, and print.
How to Remove a PDF Password
Unlock a password-protected PDF so you can print, copy, or edit it freely. Learn the difference between user and owner passwords and how to remove them.
How to Merge PDF Files for Free
Combine multiple PDF documents into a single file. Reorder pages, remove unwanted files, and download the merged PDF — all without uploading to a server.
How to Look Up DNS Records
Query DNS records for any domain. Learn what A, AAAA, MX, CNAME, TXT, and NS records do and how to use DNS lookups for debugging.
How to Generate Strong Passwords
Learn what makes a password strong, how password generators work, and best practices for creating and managing secure passwords.
How to Generate MD5, SHA-256, and Other Hashes
Generate cryptographic hashes from text or files. Learn what hashing is, the differences between MD5, SHA-1, and SHA-256, and when to use each algorithm.
How to Generate a Color Palette for Your Design
Create harmonious color palettes using color theory. Learn about complementary, analogous, and triadic color schemes and how to use them in your projects.
How to Format SQL Queries
Format and beautify messy SQL for MySQL, PostgreSQL, SQLite, and SQL Server. Learn why readable SQL matters and how to clean up any query.
How to Format and Minify HTML Code
Beautify messy HTML with proper indentation or minify it for production. Learn when to format, when to minify, and how each affects your workflow.
How to Format and Validate JSON Online
Paste messy or minified JSON and get it formatted with proper indentation, syntax highlighting, and validation — instantly in your browser.
How to Extract Text from a PDF
Extract all text from PDF files and download as plain text. Learn the difference between text-based and scanned PDFs and how to get the best results.
How to Encode and Decode URLs
Understand URL encoding (percent-encoding), when you need it, and how to encode or decode URLs and query parameters correctly.
How to Decode and Inspect JWT Tokens
Decode JSON Web Tokens to inspect their header, payload, and claims. Learn what JWTs contain, how they work, and how to debug authentication issues.
How to Crop Images Online
Crop images to any size or aspect ratio with a visual editor. Learn when to crop, common aspect ratios, and the difference between cropping and resizing.
How to Create QR Codes for URLs, Wi-Fi, and Contact Cards
Generate QR codes for website links, Wi-Fi passwords, contact information, and plain text. Download as PNG or SVG for print or digital use.
How to Create CSS Gradients
Build linear, radial, and conic CSS gradients visually. Learn gradient syntax, common patterns, and how to use gradients effectively in web design.
How to Count Words and Characters in Any Text
Count words, characters, sentences, and paragraphs in your text. Learn about character limits on popular platforms and how to check reading time.
How to Convert Video to GIF
Turn video clips into high-quality animated GIFs. Set frame rate, size, and duration for the perfect loop.
How to Convert Unix Timestamps
Convert Unix epoch timestamps to readable dates and back. Understand what Unix time is, the difference between seconds and milliseconds, and how to work with timestamps in code.
How to Convert Units Online
Convert between units of length, weight, temperature, volume, speed, area, data, and time. Covers metric, imperial, and US customary systems.
How to Convert Between Time Formats
Convert between 12-hour and 24-hour time, Unix timestamps, ISO 8601, and human-readable dates. A quick reference for common time format conversions.
How to Convert Text Between Cases
Convert text between UPPERCASE, lowercase, Title Case, camelCase, snake_case, kebab-case, and more. Learn when to use each case format.
How to Convert PDF to Word
Convert PDF files to editable Word documents. Learn how PDF-to-Word conversion works, what to expect, and tips for getting the best results.
How to Convert Markdown to PDF
Turn Markdown documents into clean, printable PDFs. Customize page size and margins, preview the result, and download instantly.
How to Convert Between JPG and PNG: When to Use Which
Convert JPG to PNG or PNG to JPG online. Learn the differences between the two formats and when to use each one for the best results.
How to Convert Images to PDF
Convert JPG, PNG, and WebP images into PDF documents. Combine multiple images into one file with custom page sizes and orientation.
How to Convert HTML to PDF
Convert HTML code and styled web pages into downloadable PDF documents. Preserve your CSS styling, fonts, and layout in the exported file.
How to Convert HEX to RGB Color Codes
Convert HEX color codes to RGB values and back. Learn how HEX and RGB work, when to use each format, and how to convert manually or with a tool.
How to Convert HEIC to JPG on Any Device
Convert iPhone HEIC photos to JPG so they work everywhere. Learn what HEIC is, why iPhones use it, and how to convert files without installing anything.
How to Convert CSV to JSON
Convert CSV spreadsheet data to JSON format for APIs, databases, and web applications. Learn about delimiters, headers, and common conversion patterns.
How to Convert Audio Files Online
Convert audio between MP3, WAV, OGG, AAC, and FLAC formats. Learn the differences between audio formats and when to use each one.
How to Compress Video Files in Your Browser
Reduce video file sizes for easier sharing and faster uploads. Compress MP4 and WebM files directly in your browser — no software to install, no server upload.
How to Compress Images Without Losing Quality
Learn how to reduce JPG, PNG, and WebP file sizes for faster websites, smaller emails, and easier sharing — all without visible quality loss.
How to Compress a PDF Without Losing Quality
Reduce PDF file size for email, uploads, and sharing. Learn how PDF compression works and how to shrink files without making them unreadable.
How to Compare Text and Find Differences
Compare two texts side by side and see exactly what changed. Spot added, removed, and modified lines instantly with a visual diff checker.
How to Check Color Contrast for Accessibility
Use WCAG contrast ratios to make sure your text is readable for everyone, including people with low vision or color blindness.
How to Calculate Your Exact Age
Find your exact age in years, months, days, and hours from your date of birth. Calculate age on any date and count down to your next birthday.
How to Calculate Percentages
Calculate any percentage problem instantly. Learn the formulas for finding X% of Y, percentage change, reverse percentages, and more.
How to Calculate Days Between Two Dates
Find the exact number of days, weeks, months, and years between any two dates. Add or subtract days from a date to find a future or past date.
How to Calculate Compound Interest
Calculate how investments grow with compound interest and regular contributions. Understand compounding frequency, the Rule of 72, and how to project future value.
How to Calculate BMI
Calculate your Body Mass Index from height and weight. Understand BMI categories, what they mean, and the limitations of BMI as a health metric.
How to Build Cron Expressions
Build cron expressions visually for scheduling jobs. Learn the cron syntax, see common schedule examples, and preview upcoming run times.
How to Add a Watermark to a PDF
Add text watermarks to PDF documents to mark them as drafts, confidential, or branded. Customize position, opacity, and style.