ToolRack Blog

Developer Tools

• Convert Markdown to HTML With Live Preview 2026-05-29
  Paste Markdown and get clean HTML instantly with a live preview. Supports headings, lists, code blocks, tables, links, and images. No signup, runs in your browser.
• HTTP Status Codes: A Developer's Quick Reference 2026-05-29
  The most common HTTP status codes explained for developers. When to use each code in APIs, the 301 vs 302 redirect difference, and what 4xx and 5xx errors actually mean.
• Build a .gitignore for Any Tech Stack in Seconds 2026-05-29
  Generate a .gitignore file for any combination of languages and frameworks. Avoid committing node_modules, .env files, and build artifacts to your repo.
• UUID Versions Explained — When to Use v4 vs v7 2026-05-28
  Generate random UUID v4 identifiers instantly in your browser.
• URL Encoding Explained — When and How to Encode 2026-05-28
  Encode text for safe use in URLs or decode percent-encoded strings instantly in your browser.
• Unix Timestamps Explained — Epoch Time Reference 2026-05-28
  Convert Unix timestamps to human dates and back with live current timestamp.
• Format SQL Queries for Readability and Debugging 2026-05-28
  Format and prettify SQL queries in your browser. Supports SELECT, INSERT, UPDATE, CREATE. Private, no upload, no signup.
• How to Read and Debug JSON Web Tokens 2026-05-28
  Decode and inspect JSON Web Tokens privately in your browser. See header, payload, and expiration.
• Generate TypeScript Types from API Responses 2026-05-28
  Generate TypeScript interfaces from JSON data in your browser. Handles nested objects, arrays, optional fields. Private, no upload.
• MD5 vs SHA-256 — Which Hash Algorithm to Use 2026-05-28
  Generate MD5, SHA-1, SHA-256, and SHA-512 hashes of any text in your browser.
• How to Convert CSV Data to JSON for APIs 2026-05-28
  Convert CSV to JSON instantly in your browser. Auto-detects headers and delimiters. Supports TSV. Private, no upload, no signup.
• Base64 Encoding Explained — When and Why to Use It 2026-05-28
  Encode text to Base64 or decode Base64 to text instantly in your browser.
• Common JSON Errors and How to Fix Them 2026-05-25
  Format, prettify, minify, and validate JSON instantly in your browser
• Cron Syntax Cheat Sheet — Every Field Explained 2026-05-25
  Translate cron expressions to plain English, build cron schedules visually, and preview next run times

Image Tools

• Convert SVG to PNG at Any Scale 2026-05-29
  Convert SVG files to PNG at any scale. 1x, 2x, 3x, 4x or custom size. Transparent or solid background. Free, private, browser-based.
• How to Build a Sprite Sheet from Images 2026-05-29
  Combine multiple images into a single sprite sheet with auto-grid layout, CSS coordinates, and JSON metadata. Free, private, runs in your browser.
• Convert Images to Base64 Data URIs 2026-05-29
  Convert images to Base64 data URIs or decode Base64 back to images. See file sizes and MIME types. Free, private, browser-based.
• How to Rotate or Flip an Image Without Installing Anything 2026-05-29
  Fix sideways photos and EXIF orientation issues instantly in your browser. Rotate 90, 180, or 270 degrees, flip horizontally or vertically, and download the result.
• Extract Individual Frames From Any GIF 2026-05-29
  Extract individual frames from animated GIFs as PNG images. View frame timing, select and download frames. Free, private, browser-based.
• WebP vs JPG: Which Should You Use? 2026-05-28
  WebP vs JPG compared — file size, quality, browser support, and when to pick each. Convert between formats free.
• Convert WebP to PNG — Keep Transparency Intact 2026-05-28
  Convert WebP to lossless PNG with transparency preserved. No upload, no quality loss. Free, browser-based.
• Convert WebP to JPG for Universal Compatibility 2026-05-28
  Convert WebP images to universally compatible JPG. No upload, runs in your browser. Free and private.
• Resize Images for Steam 2026-05-28
  Resize images for Steam profiles, artwork showcases, workshop thumbnails, and banners. Exact dimensions included.
• Resize Images for Shopify 2026-05-28
  Resize product photos, collection images, and banners to Shopify's recommended dimensions. Free, browser-based.
• Resize Images for Discord 2026-05-28
  Resize images to Discord's exact pixel requirements. Profile pics, server icons, banners, emoji, and stickers.
• How to Reduce Image File Size 2026-05-28
  Step-by-step guide to reducing image file size without visible quality loss. Resize, compress, and convert with free tools.
• PNG vs WebP: When to Use Each 2026-05-28
  PNG vs WebP for transparency, quality, and file size. A practical guide to choosing the right format for your project.
• PNG to WebP Converter 2026-05-28
  Convert PNG images to WebP format in your browser. Smaller files, same quality.
• PNG to JPG — When Lossy Compression Makes Sense 2026-05-28
  Convert PNG to JPG for dramatically smaller file sizes. Adjustable quality, browser-based, no upload.
• How to Make a Pixel Art Favicon 2026-05-28
  Create pixel art favicons and app icons from scratch. Draw on a grid, export at any size with crisp pixels. Free, no signup.
• JPG to WebP — Save 25-35% File Size on Photos 2026-05-28
  Convert JPG photos to WebP for 25-35% smaller files with the same visual quality. Free, private, browser-based.
• When to Convert JPG to PNG — Quality vs File Size 2026-05-28
  Convert JPG to PNG for lossless quality and transparency support. Runs in your browser, no upload needed.
• Convert iPhone HEIC Photos to JPG 2026-05-28
  Convert iPhone HEIC photos to JPG in your browser. No app needed, no upload to any server. Works on any device.
• How to Optimize Images for the Web 2026-05-27
  Optimize images for the web with one click. Auto-converts to WebP, strips metadata, applies smart compression.
• Free Online Pixel Art Editor 2026-05-27
  Draw pixel art in your browser with a simple grid editor. Presets for common sizes, color palettes, undo/redo, and export at any scale.
• How to Resize Images for Social Media, Email, and Web 2026-05-27
  Resize images to exact pixel dimensions or by percentage. Maintain aspect ratio, export as PNG, JPG, or WebP.
• How to Crop Images to Exact Dimensions 2026-05-27
  Crop images with preset aspect ratios or exact pixel dimensions. See a live preview, download instantly.
• How to Convert Images Between PNG, JPG, and WebP 2026-05-27
  Convert images between PNG, JPG, and WebP instantly in your browser. No upload, no signup, no file size limits.
• How to Compress Images Without Losing Quality 2026-05-27
  Reduce image file size with precise quality control. Adjust compression, change format, compare before and after.
• How to Convert HEIC to JPG on Any Device 2026-05-27
  Convert iPhone HEIC photos to JPG or PNG instantly in your browser. No upload to a server, no app install, no signup.
• How to Speed Up or Slow Down a GIF 2026-05-27
  Change GIF playback speed instantly in your browser. Speed up, slow down, or set exact timing.
• How to Make an Animated GIF from Images 2026-05-27
  Upload images, set frame order and timing, export as animated GIF. Free, private, runs in your browser. No watermark, no signup.

Productivity

• URL Slug Generator -- Clean URLs for SEO 2026-05-30
  Generate SEO-friendly URL slugs from any text. Learn slug best practices, platform conventions, and how transliteration handles special characters.
• Percentage Calculator -- Formulas and Examples 2026-05-30
  Calculate percentages three ways: percentage of a number, what percent one number is of another, and percentage change. Formulas included.
• Lorem Ipsum Generator -- Placeholder Text Fast 2026-05-30
  Generate lorem ipsum placeholder text by paragraphs, sentences, or words. Copy plain text or HTML output for mockups and designs.
• Word Counter With Reading Time and Character Limits 2026-05-29
  Count words, characters, sentences, and paragraphs with estimated reading time. Check platform character limits.
• How to Stop Getting Charged for Free Trials You Forgot 2026-05-29
  Common tricks companies use to turn free trials into charges, and a step-by-step checklist to protect yourself every time you sign up.
• Stay Focused With a Free Pomodoro Timer 2026-05-29
  Free browser-based Pomodoro timer with 25/5 intervals, desktop notifications, and session tracking. No install required.
• Generate Strong Passwords Without Installing Anything 2026-05-29
  Generate strong random passwords in your browser using cryptographically secure randomness. No install, no signup.
• Create Invoices Without Signing Up for Anything 2026-05-29
  Create professional invoices and download as PDF. No signup, no account. Fill the form, preview, and print. Free and private.
• Free Trial Tracker vs Trim and Rocket Money 2026-05-29
  Compare ToolRack's free trial tracker with Trim, Rocket Money, and other subscription apps. No bank access, no signup, no cost.
• Free Trial Policies You Should Know Before Signing Up 2026-05-29
  Reference table of free trial lengths, auto-renewal policies, and cancellation methods for Netflix, Spotify, Adobe, and 15+ other services.
• Countdown Timer and Date Calculator for Deadlines 2026-05-29
  Count down to any deadline or event. Calculate days between dates, including business days. No install required.
• The Simplest Checklist App That Doesn't Need an Account 2026-05-29
  Create checklists that save in your browser using localStorage. No account, no cloud sync. Private and fast.
• Character Counter for Twitter, Instagram, and LinkedIn Limits 2026-05-29
  Count characters with and without spaces. Check platform-specific character limits instantly.
• Convert Text Between camelCase, snake_case, and More 2026-05-29
  Convert text between camelCase, snake_case, UPPERCASE, lowercase, Title Case, and more. Programming naming conventions made easy.
• How to Track Free Trials and Avoid Surprise Charges 2026-05-25
  Track free trial subscriptions and get reminded before they charge you. No signup, works in your browser.

Design Tools

• Color Converter -- HEX to RGB to HSL Explained 2026-05-30
  Convert colors between HEX, RGB, and HSL formats. Learn when to use each CSS color format and how the conversion math works.
• WCAG Color Contrast Checker -- AA and AAA Guide 2026-05-30
  Check color contrast ratios against WCAG AA and AAA standards. Learn the formula, minimum ratios, and how to fix low-contrast text.
• Aspect Ratio Calculator -- Resize Without Cropping 2026-05-30
  Calculate image and video aspect ratios. Reference table for 16:9, 4:3, and social media dimensions with formulas for scaling.
• Compare Two Texts and See the Differences 2026-05-29
  Paste two texts side by side and instantly see what changed. Highlights additions, deletions, and modifications. Useful for code review, config comparison, and document editing.
• Generate Meta Tags for SEO and Social Sharing 2026-05-29
  Create the essential HTML meta tags every page needs. Open Graph for Facebook and LinkedIn, Twitter Cards, and SEO basics with character limit guidance.
• Generate Favicons From an Image or Text 2026-05-29
  Create favicons in every size you need from an image or text. ICO vs PNG vs SVG explained. Download all sizes with ready-to-use HTML link tags.
• Generate CSS for Gradients, Shadows, and Borders 2026-05-29
  Generate CSS for gradients, box shadows, and border radius with live preview.
• Generate Color Palettes From Images or Color Theory 2026-05-29
  Create harmonious color palettes from photos or color theory rules. Complementary, analogous, triadic, and split-complementary schemes explained. Export as CSS variables.

General

• Browser-Based Tools vs Apps for Managing Subscriptions 2026-05-29
  Why some people prefer browser-based tools over apps for tracking subscriptions. Privacy, simplicity, and when each approach makes sense.
• How to Share Your WiFi Password with a QR Code 2026-05-25
  Generate a QR code for your WiFi network so guests can connect instantly by scanning