Blog
Guides, tips, and tutorials for working with media, documents, and data — all in your browser.
How to Convert Video Files in Your Browser Without Uploading
Learn how to convert MP4 to WebM and other formats using hardware-accelerated WebCodecs — entirely in your browser, no upload required.
How to Merge PDF Files Without Installing Software
Combine multiple PDFs into one directly in your browser. No uploads, no sign-ups, no desktop software needed.
How to Convert CSV to JSON (and Back) Instantly
A quick guide to converting between CSV and JSON formats. Understand the structure differences and when to use each format.
Crop Images with the Right Aspect Ratio for Every Platform
Aspect ratio guide for Instagram, Facebook, YouTube, and more. Tips for composition using the rule of thirds.
Apply Image Filters Without Photoshop
Adjust brightness, contrast, saturation, blur, and more using browser-based CSS filters. Quick guide to image adjustments.
WebP vs PNG vs JPEG: Choosing the Right Image Format for the Web
Compare modern image formats and learn which one to use for photos, graphics, icons, and transparency.
How to Compress Images Without Losing Quality
A practical guide to reducing image file sizes while keeping them sharp. Learn about lossy vs lossless compression and when to use each.
Time Zone Conversion Guide: UTC Offsets, DST, and Scheduling
How time zones work, daylight saving time complications, and tips for scheduling across time zones.
How to Split Spritesheets into Individual Sprites
Extract sprites from spritesheets using grid-based or auto-detect splitting. Guide for game devs and designers.
How to Generate Strong Passwords That Actually Protect You
What makes a password strong, how long it takes to crack different passwords, and why password managers matter.
Character Limits for Every Social Media Platform in 2026
Complete reference for character limits on Twitter, Instagram, Facebook, LinkedIn, TikTok, YouTube, and more.
How to Format, Validate, and Minify JSON
Pretty-print messy JSON, catch syntax errors, and minify for production. A practical guide to working with JSON data.
HEX, RGB, HSL Explained: A Guide to Web Color Formats
Understand the differences between HEX, RGB, HSL, and HSV color formats. Learn when to use each in CSS and design.
How to Resize Images for Web, Social Media, and Email
Optimal image dimensions for websites, social platforms, and email. Understand aspect ratios, Retina displays, and batch resizing.
How to Generate All Favicon Sizes from One Image
Create every favicon size you need — ICO, PNG, Apple Touch Icon, Android manifest — from a single source image.
Unix Timestamps Explained: Convert, Compare, and Debug
What Unix timestamps are, how they work, the Y2038 problem, and how to convert between timestamps and human-readable dates.
URL Encoding Explained: Why %20 Means Space
How percent-encoding works, when to encode URLs, the difference between %20 and +, and common pitfalls to avoid.
Base64 Encoding Explained: What It Is and When to Use It
Understand Base64 encoding, data URIs, JWT tokens, and why Base64 is not encryption. Practical guide for developers.
UUID Guide: Versions, Use Cases, and Best Practices
Everything about UUIDs — v1, v4, v7, when to use them, collision probability, and database performance tips.
HTML Entity Encoding: Prevent XSS and Display Special Characters
Learn how HTML entities work, why they matter for security, and how to encode and decode them correctly.
How to Compare Two Texts and Find Differences
Use a diff tool to spot additions, deletions, and changes between two texts. Great for code review, editing, and data comparison.
Convert Text Between Cases: camelCase, snake_case, Title Case, and More
Switch between uppercase, lowercase, title case, camelCase, snake_case, and other naming conventions in one click.
How to Count Words, Characters, and Reading Time
Track word count, character count, sentences, and estimated reading time. Useful for essays, social media, and content writing.
Binary, Hex, Octal, Decimal: Number Base Conversion Guide
How number bases work, practical uses for binary and hexadecimal, and a quick reference table for conversions.
Percentage Calculator: Formulas, Tips, and Common Mistakes
How to calculate percentages, percent change, discounts, tips, and growth rates. Avoid common percentage pitfalls.
Tip Calculator: How Much to Tip and How to Split Bills
Standard tip amounts by service type, quick mental math tricks, and how to split bills fairly among a group.
Unit Conversion Quick Reference: Length, Weight, Temperature, Volume
Essential conversion factors for everyday units. Quick mental math tricks for common conversions.